ꢀꢁꢂꢃꢄꢅꢀꢃꢆꢇ ꢈꢄꢉꢊꢄꢋ
ꢈꢌꢍꢎꢏ ꢐꢑꢒꢓꢔꢕ ꢖꢗꢍ ꢐꢑꢒꢓꢔꢘ
ꢒꢙꢚꢙꢛꢖꢏ ꢅꢜꢎꢝ ꢌ ꢎꢛꢎꢝ
M789-038A
15 June 1999
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OMEGA Model CYD201/CYD208 User’s Manual
TABLE OF CONTENTS
Chapter/Paragraph
Title
Page
1 INTRODUCTION..........................................................................1-1
1.0
1.1
1.2
1.2.1
1.2.2
1.2.3
1.3
1.3.1
1.3.2
1.4
General.......................................................................1-1
Model CYD201/CYD208 System Description.............1-1
Handling Liquid Helium and Liquid Nitrogen ..............1-3
Handling Cryogenic Storage Dewars......................1-3
LHe and LN2 Safety Precautions ............................1-3
Recommended First Aid .........................................1-4
Electrostatic Discharge...............................................1-4
Identifying ESDS Components ...............................1-5
Handling ESDS Components..................................1-5
Safety Summary.........................................................1-5
Safety Symbols...........................................................1-6
1.5
2
INSTALLATION ...........................................................................2-1
2.0
2.1
2.2
2.3
General.......................................................................2-1
Inspection and Unpacking..........................................2-1
Repackaging For Shipment........................................2-1
Power and Ground Requirements..............................2-2
Sensor Installation Recommendations.......................2-2
Two-Lead Vs. Four-Lead Measurements................2-3
Connecting Leads to the Sensor.............................2-4
Sensor Mounting.....................................................2-4
Measurement Errors Due to AC Noise....................2-5
Sensor Input Connections..........................................2-6
Sensor Curve Definition..............................................2-7
Rack Mounting............................................................2-7
Initial Power Up Sequence .........................................2-9
Power Up Errors.........................................................2-9
2.4
2.4.1
2.4.2
2.4.3
2.4.4
2.5
2.6
2.7
2.8
2.9
3
OPERATION ................................................................................3-1
3.0
3.1
3.2
3.3
3.4
3.5
3.5.1
3.5.2
3.5.3
3.6
3.6.1
3.6.2
3.6.3
General.......................................................................3-1
Units Key ....................................................................3-1
Channel Key (Model CYD208 Only)...........................3-2
Scan Mode .................................................................3-2
Setting Dwell Times....................................................3-2
Alarm Operation .........................................................3-2
Alarm Setpoint ........................................................3-2
Latched and Unlatched Alarms...............................3-3
Alarm Fix Function (Model CYD208 Only)..............3-3
SoftCal™ Compensations ..........................................3-3
SoftCal™ Calibration Procedure.............................3-4
Verifying SoftCal™ Operation.................................3-5
Erasing SoftCal™ Compensations .........................3-5
Table of Contents
i
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OMEGA Model CYD201/CYD208 User’s Manual
TABLE OF CONTENTS (Continued)
Chapter/Paragraph
Title
Page
4 REMOTE OPERATION................................................................4-1
4.0
4.1
4.1.1
4.1.2
4.1.3
4.1.4
4.2
General.......................................................................4-1
Serial Interface ...........................................................4-1
Serial Interface Connections...................................4-1
Serial Interface Operation.......................................4-3
Sample Basic Program ...........................................4-3
Sample QuickBasic 4.0 Program ............................4-4
Serial Interface Command Summary..........................4-4
5
SERVICE......................................................................................5-1
5.0
5.1
5.2
5.3
5.4
5.5
5.6
5.7
General.......................................................................5-1
Model CYD201 Rear Panel Connections ...................5-1
Model CYD208 Rear Panel Connections ...................5-2
Error Code Troubleshooting .......................................5-3
General Maintenance .................................................5-3
Fuse Replacement .....................................................5-4
Line Voltage Configuration .........................................5-4
Recalibration...............................................................5-5
Current Source Calibration......................................5-5
A/D Converter Calibration .......................................5-6
Serial Interface Cable and Adapters...........................5-6
5.7.1
5.7.2
5.8
6
OPTIONS AND ACCESSORIES..................................................6-1
6.0
6.1
6.2
6.3
General.......................................................................6-1
Accessories ................................................................6-1
Wires ..........................................................................6-2
Sensors ......................................................................6-3
APPENDIX A – CURVE TABLES ......................................................A-1
A1.0 General...................................................................... A-1
ii
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OMEGA Model CYD201/CYD208 User’s Manual
LIST OF ILLUSTRATIONS
Figure No.
Title
Page
1-1
Typical Cryogenic Dewar..........................................................1-3
2-1
2-2
2-3
Model CYD201 Sensor Connector J1 Details...........................2-6
Model CYD208 Sensor Connector J1 Details...........................2-6
Model 2090 Rack Mounting ......................................................2-8
3-1
3-2
Model CYD201 Front Panel......................................................3-1
Model CYD208 Front Panel......................................................3-1
4-1
4-2
Serial I/O (RJ-11) Connector Pin Definitions ............................4-2
Serial Interface Connections.....................................................4-2
5-1
5-2
5-3
5-4
5-5
5-6
5-7
Model CYD201 Rear Panel Connections..................................5-1
Model CYD208 Rear Panel Connections..................................5-2
Line Voltage Jumper Configuration ..........................................5-4
Calibration Connections............................................................5-5
Model CYD200-J10 RJ-11 Cable Assembly Wiring Details......5-6
Model CYD200-D RJ-11 to DB-25 Adapter Wiring Details .......5-6
Model CYD200-B RJ-11 to DE-9 Adapter Wiring Details .........5-3
6-1
Serial Interface Adapters ..........................................................6-3
LIST OF TABLES
Table No.
Title
Page
1-1
Model CYD201/CYD208 Specifications....................................1-2
2-1
2-2
Line Voltage and Fuse Rating Selection...................................2-2
Model CYD201/CYD208 Temperature Curves .........................2-7
4-1
Serial Interface Specifications ..................................................4-1
A-1 Curve 0 - DT-500DI-8B Voltage-Temp. Characteristics........... A-1
A-2 Curve 1 - DT-500DI-8A Voltage-Temp. Characteristics........... A-2
A-3 Curve 2 - DT-500DRC-D Voltage-Temp. Characteristics ........ A-3
A-4 Curve 3 - DT-500DRC-E1 Voltage-Temp. Characteristics....... A-4
A-5 Curve 4 - CTI Diode Voltage-Temp. Characteristics................ A-5
A-6 Curve 5 - DT-500DI-8C Voltage-Temp. Characteristics .......... A-6
A-7 Curve 6 - CY-7 Voltage-Temp. Characteristics........................ A-7
Table of Contents
iii
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iv
Table of Contents
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OMEGA Model CYD201/CYD208 User’s Manual
CHAPTER 1
INTRODUCTION
1.0
GENERAL
This chapter covers a general description of the Model CYD201/CYD208
(Paragraph 1.1), Handling Liquid Helium and Liquid Nitrogen (Paragraph 1.2),
Electrostatic Discharge (Paragraph 1.3), Safety Summary (Paragraph 1.4),
and Safety Symbols (Paragraph 1.5).
Due to the OMEGA commitment to continuous product improvement,
modifications may occur to the Model CYD201/CYD208 software with time.
Some of these changes result from Customer feedback about operation on
various cryogenic systems. We encourage comments or suggestions
regarding this instrument. Please return the instrument warranty card to
ensure receipt of future software updates.
1.1
MODEL CYD201/CYD208 GENERAL DESCRIPTION
Model CYD201/CYD208 Digital Thermometers are ideal to monitor critical
temperatures in chemical and materials research, superconductivity
measurements, and low temperature physics. The units feature:
• Broad Temperature Range: 1.4 K to 475 K (–272 °C to 202 °C).
• Single Channel (CYD201) and Eight Channel (CYD208) Models.
• For use with CY-7 Series, DT-500 Series, and other Silicon Diode
Sensors.
• System Accuracy (Instrument with Sensor) with SoftCal™ to within
±0.1 °C or better.
• Temperature display in °C, °F, K, or Sensor Voltage.
• High/Low Alarm Setpoint with Interfacing Alarm Contacts.
• Standard RS-232C Output of Temperature, Input of Settings, and
Alarm Status for Remote Operation.
Introduction
1-1
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OMEGA Model CYD201/CYD208 User’s Manual
Table 1-1. Model CYD201/CYD208 Specifications
Display: Four-digit LED display
Resolution: 0.1 for values > 100 or < –100
0.01 for values between -100<T<100
Temperature Range: 1.4 K to 475 K without probe
23 K to 473 K with probe
System Accuracy: To within ±0.1K from 177 K to 313 K.
To ±0.2 K or better from 30 K to 373 K.
±1.0 K above 373 K.
Sensor Excitation: 10 µA constant current
Repeatability: <50 mK
Input Range: 0 to 3 volts with a resolution of 0.1 mV
Hi/Lo Alarm Setpoint: 0.1° resolution
Alarm Relay: Single SPDT relay, rated 28 VDC or Peak AC, 0.25 A
(3 W max.)
Scan/Dwell: The Model CYD208 automatically scans all eight channels
with selectable dwell times of 0 (skip), 5, 10, 30 and 60
seconds for each channel.
Connections:Four-lead sensor connection (2 current, 2 voltage).
Response Curves*: Standard Curve 10, DT-500DI-8A
(also -8B and -8C), DT-500DRC-D,
DT-500DRC-E1, and CTI Curve C.
* SOFTCAL™ qualified only for CY-7 Series diode sensors.
COMPUTER INTERFACE
Type: RS-232C Serial Three Wire (Refer to Table 4-1).
MECHANICAL
Ambient Temperature Range: 18 to 28 °C (64 to 82 °F),
or 15 to 35 °C (59 to 95 °F) with reduced accuracy.
Power Requirements: 90-125 or 210-250 VAC, 50/60 Hz, 3 watts.
Dimensions: 41 x 106 x 164 mm (1.61 x 4.18 x 6.45 inches).
Weight: 0.5 kilogram (1.1 Pounds)
NOTES
1. Product Specifications subject to change without notice.
2. System electronic temperature accuracy in a given temperature range is the
sum of the specifications given for input and output. Sensor calibration errors
are not included.
1-2
Introduction
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OMEGA Model CYD201/CYD208 User’s Manual
1.2
HANDLING LIQUID HELIUM AND LIQUID NITROGEN
Helium and Nitrogen are colorless, odorless, and tasteless gases. They
liquefy when properly cooled. Liquid helium (LHe) and liquid nitrogen (LN2)
may be used in conjunction with the Model CYD201 or CYD208. Although
not explosive, there are certain safety considerations in the handling of LHe
and LN2.
1.2.1 Handling Cryogenic Storage Dewars
Operate all cryogenic containers (dewars) in
accordance with manufacturer instructions. Safety
instructions are normally posted on the side of
each dewar. Keep cryogenic dewars in a well-
ventilated place, protected from the weather, and
away from heat sources. Figure 1-1 shows a
typical cryogenic dewar.
NON-
MAGNETIC
NON-
LIQUID
HELIUM
FLAMMABLE
KEEP
UPRIGHT
1.2.2 LHe and LN2 Safety Precautions
Transfer LHe and LN2 and operate storage dewar
controls in accordance with manufacturer/supplier
instructions. During transfer, follow all safety
precautions written on the storage dewar and
recommended by the manufacturer.
Figure 1-1. Typical
Cryogenic Dewar
WARNING
•
Liquid helium is a potential asphyxiant and can cause rapid
suffocation without warning. Store and use in an adequately
ventilated area. DO NOT vent the container in confined spaces. DO
NOT enter confined spaces where gas may be present unless area
is well-ventilated. If inhaled, remove to fresh air. If not breathing,
give artificial respiration. If breathing is difficult, give oxygen. Get
medical attention.
•
Liquid helium can cause severe frostbite to exposed body parts. DO
NOT touch frosted pipes or valves. For frostbite, consult a
physician immediately. If a physician is unavailable, warm the
affected parts with water that is near body temperature.
Two essential safety aspects of handling LHe are adequate ventilation and
eye and skin protection. Although helium and nitrogen gases are non-toxic,
they are dangerous because they replace air in a normal breathing
atmosphere. Liquid helium is an even greater threat because a small
amount of liquid evaporates to create a large amount of gas. Store and
operate cryogenic dewars in open, well-ventilated areas.
Introduction
1-3
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When transferring LHe and LN2, protect eyes and skin from accidental
contact with liquid or the cold gas issuing from it. Protect eyes with full face
shield or chemical splash goggles; safety glasses (even with side shields)
are inadequate. Always wear special cryogenic gloves (Tempshield
Cryo-Gloves® or equivalent) when handling anything that is, or may have
been, in contact with the liquid or cold gas, or with cold pipes or equipment.
Wear long sleeve shirts and cuffless trousers long enough to prevent liquid
from entering shoes.
1.2.3 Recommended First Aid
Post an appropriate Material Safety Data Sheet (MSDS) obtained from the
manufacturer/distributor at every site that stores and uses LHe and LN2. The
MSDS specifies symptoms of overexposure and first aid.
If a person exhibits symptoms of asphyxia such as headache, drowsiness,
dizziness, excitation, excessive salivation, vomiting, or unconsciousness,
remove to fresh air. If breathing is difficult, give oxygen. If breathing stops,
give artificial respiration. Call a physician immediately.
If exposure to cryogenic liquids or cold gases occurs, restore tissue to
normal body temperature (98.6°F) by bathing it in warm water not exceeding
105 °F (40 °C). DO NOT rub the frozen part, either before or after
rewarming. Protect the injured tissue from further damage and infection and
call a physician immediately. Flush exposed eyes thoroughly with warm
water for at least 15 minutes. In case of massive exposure, remove clothing
while showering with warm water. The patient should not drink alcohol or
smoke. Keep warm and rest. Call a physician immediately.
1.3
ELECTROSTATIC DISCHARGE
Electrostatic Discharge (ESD) may damage electronic parts, assemblies,
and equipment. ESD is a transfer of electrostatic charge between bodies at
different electrostatic potentials caused by direct contact or induced by an
electrostatic field. The low-energy source that most commonly destroys
Electrostatic Discharge Sensitive (ESDS) devices is the human body, which
generates and retains static electricity. Simply walking across a carpet in
low humidity may generate up to 35,000 volts of static electricity.
Current technology trends toward greater complexity, increased packaging
density, and thinner dielectrics between active elements, which results in
electronic devices with even more ESD sensitivity. Some electronic parts
are more ESDS than others. ESD levels of only a few hundred volts may
damage electronic components such as semiconductors, thick and thin film
resistors, and piezoelectric crystals during testing, handling, repair, or
assembly. Discharge voltages below 4000 volts cannot be seen, felt, or
heard.
1-4
Introduction
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OMEGA Model CYD201/CYD208 User’s Manual
1.3.1 Identifying ESDS Components
Below are some industry symbols used to label components as ESDS:
1.3.2 Handling ESDS Components
Observe all precautions necessary to prevent damage to ESDS components
before installation. Bring the device and everything that contacts it to ground
potential by providing a conductive surface and discharge paths. At a
minimum, observe these precautions:
1. De-energize or disconnect all power and signal sources and loads used
with unit.
2. Place unit on a grounded conductive work surface.
3. Ground technician through a conductive wrist strap (or other device)
using 1 M series resistor to protect operator.
4. Ground any tools, such as soldering equipment, that will contact unit.
Contact with operator's hands provides a sufficient ground for tools that
are otherwise electrically isolated.
5. Place ESDS devices and assemblies removed from a unit on a
conductive work surface or in a conductive container. An operator
inserting or removing a device or assembly from a container must
maintain contact with a conductive portion of the container. Use only
plastic bags approved for storage of ESD material.
6. Do not handle ESDS devices unnecessarily or remove from the
packages until actually used or tested.
1.4
SAFETY SUMMARY
Observe these general safety precautions during all phases of instrument
operation, service, and repair. Failure to comply with these precautions or
with specific warnings elsewhere in this manual violates safety standards of
design, manufacture, and intended instrument use. OMEGA assumes no
liability for Customer failure to comply with these requirements.
Ground The Instrument
To minimize shock hazard, connect instrument chassis and cabinet to an
electrical ground. The instrument comes with a 3-conductor AC power
cable. Plug it into an approved three-contact electrical outlet or use a three-
contact adapter with the green ground wire firmly secured to an electrical
ground (safety ground) at the power outlet. The power cable jack and
mating plug meet Underwriters Laboratories (UL) and International
Electrotechnical Commission (IEC) safety standards.
Introduction
1-5
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Do Not Operate In An Explosive Atmosphere
Do not operate the instrument in the presence of flammable gases or fumes.
Operation of any electrical instrument in such an environment constitutes a
definite safety hazard.
Keep Away From Live Circuits
Operating personnel must not remove instrument covers. Refer component
replacement and internal adjustments to qualified maintenance personnel.
Do not replace components with power cable connected. To avoid injuries,
always disconnect power and discharge circuits before touching them.
Do Not Substitute Parts Or Modify Instrument
Do not install substitute parts or perform any unauthorized modification to
the instrument. Return the instrument to an authorized OMEGA Cryotronics,
Inc. representative for service and repair to ensure that safety features are
maintained.
1.5
SAFETY SYMBOLS
Direct current (power line).
Alternating current (power line).
Alternating or direct current (power line).
Three-phase alternating current (power line).
t
Y
Earth (ground) terminal.
Protective conductor terminal.
Frame or chassis terminal.
On (supply)
Off (supply)
Equipment protected throughout by double insulation or
reinforced insulation (equivalent to Class II of IEC 536 - see
annex H).
Caution: High voltages or temperatures. Background color:
Yellow; Symbol and outline: Black.
Caution or Warning - See instrument documentation.
Background color: Yellow; Symbol and outline: Black.
1-6
Introduction
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OMEGA Model CYD201/CYD208 User’s Manual
CHAPTER 2
INSTALLATION
2.0
GENERAL
This chapter covers Inspection and Unpacking (Paragraph 2.1),
Repackaging for Shipment (Paragraph 2.2), Sensor Installation
Recommendations (Paragraph 2.3) Power and Ground Requirements
(Paragraph 2.4), Sensor Curve Definitions (Paragraph 2.5), and Rack
Mounting (Paragraph 2.6).
2.1
INSPECTION AND UNPACKING
Remove packing list and verify receipt of all equipment. For question
about the shipment, please call OMEGA Customer Service Department at
1-800-622-2378 or (203) 359-1660.
Upon receipt, inspect container and equipment for damage. Note
particularly any evidence of freight damage. Immediately report any damage
to the shipping agent
NOTE: The carrier will not honor any claims unless all shipping material is
saved for their examination. After examining and removing contents, save
packing material and carton in the event reshipment is necessary.
2.2
REPACKAGING FOR SHIPMENT
To return the Model CYD201/CYD208, sensor, or accessories for repair or
replacement, obtain a Authorized Return (AR) number from Technical
Service in the United States, or from the authorized sales/service
representative from which the product was purchased. Instruments may not
be accepted without a RGA number. When returning an instrument for
service, OMEGA must have the following information before attempting any
repair.
1. Instrument model and serial number.
2. User name, company, address, and phone number.
3. Malfunction symptoms.
4. Description of system.
5. Authorized Return (AR) number.
Repack the system in its original container (if available). Write AR number
on the outside of the container or on the packing slip. If not available,
consult OMEGA for shipping and packing instructions.
Installation
2-1
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2.3
POWER AND GROUND REQUIREMENTS
The Model CYD201/CYD208 requires a power source of 90 to 125 or 210 to
250 VAC, 50 or 60 Hz, single phase, 3 Watts. Three-prong detachable
power cord for 120 VAC operation included. Connect to rear panel
UL/IEC/ICEE standard plug. See Table 2-1 for fuse rating.
WARNING: To prevent electrical fire or shock hazards, do not expose
this instrument to rain or excess moisture.
CAUTION: Verify proper fuse installation and AC Line Voltage Selection
Wheel on the Model CYD201/CYD208 rear panel set to available AC line
voltage before inserting power cord and turning on the instrument.
Refer to Chapter 5 to change voltage configuration.
NOTE: Do not attach the shield to earth ground at the sensor end. It may
introduce noise at the measurement end.
Table 2-1. Line Voltage and Fuse Rating Selection
Select
Range
Fuse
115
230
90 – 125 VAC
210 – 250 VAC
0.2 A (Slow Blow)
0.1 A (Slow Blow)
To protect operating personnel, the National Electrical Manufacturer’s
Association (NEMA) recommends, and some local codes require, grounded
instrument panels and cabinets. The 3-conductor power cable, when
plugged into an appropriate receptacle, grounds the instrument.
Grounding and shielding signal lines are major concerns when setting up
any precision instrument or system. The CYD201/CYD208 includes ground
isolation of sensor excitation to allow 4-wire measurement of diode voltage
and resistance. Improperly grounding sensor leads and shields can defeat
this feature.
Model CYD201/CYD208 digital logic ties directly to earth ground for
interface communication. The low side of the heater output connects directly
to earth ground. Shield sensor cables whenever possible. Attach the shields
to the connector shield pin.
2.4
SENSOR INSTALLATION RECOMMENDATIONS
See the OMEGA Product Catalog for sensor installation and specifications.
Call OMEGA for copies of application notes or sensor installation questions.
Below are general recommendations on sensor installation:
1. Do not ground the sensor.
2. Shield leads and connect shield wire to SHIELD on screw terminal
connector only. Do not connect shield at other end of cable.
2-2
Installation
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OMEGA Model CYD201/CYD208 User’s Manual
3. Keep leads as short as possible.
4. Use twisted-pair wire. Use Duo-Twist™ wire (or equivalent) for two-wire,
or Quad-Twist™ wire (or equivalent) for four-wire applications.
5. Thermally anchor lead wires.
2.4.1 Two-Lead Vs Four-Lead Measurements
In two-lead measurement, the leads that measure sensor voltage also carry
the current. The voltage measured at the instrument is the sum of the
temperature sensor voltage and the IR voltage drop within the two current
leads. Since heat flow down the leads can be critical in a cryogenic
environment, wire of small diameter and significant resistance per foot is
preferred to minimize this heat flow. Consequently, a voltage drop within the
leads may exist.
Four-lead measurement confines current to one pair of leads and measures
sensor voltage with the other lead pair carrying no current.
2.4.1.1 Two-Lead Measurement
Sometimes system constraints dictate
I+
two-lead measurement. Connect the
V+
positive terminals (V+ and I+) together
and the negative terminals (V– and I–)
together at the instrument, then run
two leads to the sensor.
Two-Lead
Measurements
V–
I–
Expect some loss in accuracy; the
voltage measured at the voltmeter equals the sum of the sensor voltage and
the voltage drop across the connecting leads. The exact measurement error
depends on sensor sensitivity and variations resulting from changing
temperature. For example, a 10 lead resistance results in a 0.1 mV
voltage error. The resultant temperature error at liquid helium temperature is
only 3 mK, but, because of the lower sensitivity (dV/dT) of the diode at
higher temperatures, it becomes 10 mK at liquid nitrogen temperature.
2.4.1.2 Four-Lead Measurement
All sensors, both two-lead and four-lead devices,
can be measured in a four-lead configuration to
eliminate the effects of lead resistance. The exact
point at which the connecting leads solder to the
two-lead sensor normally results in a negligible
temperature uncertainty.
I+
V+
Four-Lead
Diode
V–
I–
Installation
2-3
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2.4.2 Connecting Leads To The Sensor
Excessive heat flow through connecting leads to any temperature sensor
may differ the temperature between the active sensing element and the
sample to which the sensor mounts. This reflects as a real temperature
offset between what is measured and the true sample temperature.
Eliminate such temperature errors with proper selection and installation of
connecting leads.
To minimize heat flow through the leads, select leads of small diameter and
low thermal conductivity. Phosphor-bronze or Manganin wire is commonly
used in sizes 32 or 36 AWG. These wires have a fairly low thermal
conductivity, yet electrical resistance is not large enough to create
measurement problems.
Thermally anchor lead wires at several temperatures between room
temperature and cryogenic temperatures to guarantee no heat conduction
through the leads to the sensor.
2.4.3 Sensor Mounting
DT-470-SD
Diode Sensor Leads
Before installing a diode sensor, identify
which lead is the anode and which is the
cathode. When viewed with the base down
and the leads towards the observer, the
anode is on the right and the cathode is on
the left. The OMEGA CY-7-SD silicon diode
sensor lead configuration is shown to the
right. For other sensors, read accompanying
Cathode
Anode
literature or consult the manufacturer to
positively identify sensor leads. Lead identification should remain clear even
after sensor installation. Record the sensor serial number and location.
On the CY-7-SD, the base is the largest flat surface. It is sapphire with gold
metalization over a nickel buffer layer. The base is electrically isolated from
the sensing element and leads; make all thermal contact to the sensor
through the base. A thin braze joint around the sides of the SD package
electrically connect to the sensing element. Avoid contact to the sides with
any electrically conductive material.
When installing the sensor, make sure there are no electrical shorts or
current leakage paths between the leads or between the leads and ground.
If IMI-7031 varnish or epoxy is used, it may soften varnish-type lead
insulations so that high resistance shunts appear between wires if sufficient
time for curing is not allowed.
Slide Teflon® spaghetti tubing over bare leads when the possibility of
shorting exists. Avoid putting stress on the device leads and allow for
thermal contractions that occur during cooling which could fracture a solder
joint or lead if installed under tension at room temperature.
2-4
Installation
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OMEGA Model CYD201/CYD208 User’s Manual
For temporary mounting in cold temperature applications, apply a thin layer
of Apiezon® N Grease between the sensor and sample to enhance thermal
contact under slight pressure. The preferred method for mounting the
CY-7-SD sensor is the OMEGA CO Adapter.
CAUTION: OMEGA will not warranty replace any device damaged by
user-designed clamps or solder mounting.
For semi-permanent mountings, use Stycast epoxy instead of Apiezon® N
Grease. NOTE: Do not apply Stycast epoxy over the CY-7-SD package:
sensor stress may shift the readings. In all cases, periodically inspect the
sensor mounting to verify good thermal contact to the mounting surface is
maintained.
2.4.4 Measurement Errors Due To AC Noise
Poorly shielded leads or improperly grounded measurement systems can
introduce AC noise into the sensor leads. In diode sensors, the AC noise
shifts the DC voltage measurement due to the diode non-linear
current/voltage characteristics. When this occurs, measured DC voltage is
too low and the corresponding temperature reading is high. The
measurement error can approach several tenths of a kelvin. To determine if
this problem exists, perform either procedure below.
1. Place a capacitor across the diode to shunt induced AC currents.
Capacitor size depends on the noise frequency. If noise is related to
power line frequency, use a 10 µF capacitor. If AC-coupled digital noise
is suspected (digital circuits or interfaces), use a 0.1 to 1 µF capacitor. In
either case, if measured DC voltage increases, there is induced noise in
the measurement system.
2. Measure AC voltage across the diode with an AC voltmeter or
oscilloscope. Most voltmeters do not have the frequency response to
measure noise associated with digital circuits or interfaces (which
operate in the MHz range). For a thorough discussion of this potential
problem, and the magnitude of error which may result, request the paper
“Measurement System-Induced Errors In Diode Thermometry,” J.K.
Krause and B.C. Dodrill, Rev. Sci. Instr. 57 (4), 661, April, 1986.
To greatly reduce potential AC noise, connect twisted leads (pairs) between
the measurement instruments and the diode sensors. Use 32 or 36 AWG
OMEGA Duo-Twist™ Cryogenic Wire, which features phosphor bronze wire
twisted at 3.15 twists per centimeter (8 twists per inch). See the OMEGA
Product Catalog or contact OMEGA for further information.
Installation
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2.5
SENSOR INPUT CONNECTIONS
The Model CYD201 has one rear panel 4-pin sensor input connector
designated J1 INPUT 1. The connector pins, numbered 1 thru 4, are shown
below.
Terminal
Description
J1 INPUT 1
4
1
2
3
+ Current Out
– Current Out
– Voltage Sense
+ Voltage Sense
Shield
1
4
2
3
CASE
Figure 2-1. Model CYD201 Sensor Connector J1 Details
The Model CYD208 has a 36-pin “Miniature-D” style connector designated
J1 INPUTS for inputs 1 thru 8. A Model CYD208-D connector is included to
solder interfacing connections to J1. The pin configuration of the Model
CYD208-D is shown below.
Terminal Description
2
4
6
8
10 12 14 16 18
11 13 15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
+V - Input 1
-V - Input 1
+V - Input 2
-V - Input 2
+V - Input 3
-V - Input 3
+V - Input 4
-V - Input 4
+V - Input 5
-V - Input 5
+V - Input 6
-V - Input 6
+V - Input 7
-V - Input 7
+V - Input 8
-V - Input 8
Shield
1
3
5
7
9
17
20 22 24 26 28 30 32 34 36
19 21 23 25 27 29 31 33 35
Terminal Description
25
26
27
28
29
30
31
32
33
34
35
36
+I - Input 4
-I - Input 4
+I - Input 5
-I - Input 5
+I - Input 6
-I - Input 6
+I - Input 7
-I - Input 7
+I - Input 8
-I - Input 8
Shield
Shield
+I - Input 1
-I - Input 1
+I - Input 2
-I - Input 2
+I - Input 3
-I - Input 3
Shield
Figure 2-2. Model CYD208-D Sensor Connector Details
2-6
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2.6
SENSOR CURVE DEFINITION
To display accurate temperature, select a response curve that matches the
installed sensor. There are seven standard curves stored within the Model
CYD201/CYD208 numbered 0 through 6 (see Appendix A). Different curves
may be assigned to each channel of the Model CYD208. Find the unit
factory curve configuration inside the front cover of this manual. Curve 6
(CY-7 Curve 10) is the standard curve configuration unless specified
differently upon order.
To determine current curve selection, press and hold UNITS and turn on (1)
the rear panel SET switch (DIP switch 3). Release UNITS key. The CYD201
displays the curve number in the display window. The Model CYD208
displays the curve number in the display window and the channel number in
the channel window. To display curves for other channel numbers in the
Model CYD208, press CHANNEL to scroll through the eight channels.
To change the curve, press UNITS. The instrument scrolls through curves 0
through 6. In the Model CYD208, press CHANNEL to select other channels,
then press UNITS to scroll through the curves.
After the new curve selection, turn the SET switch on the rear panel off (0).
The unit returns to normal operation.
Table 2-2. Model CYD201/CYD208 Temperature Curves
Curve No.
Range (K)
Description
0
1
2
3
4
5
6
0 – 324.9
0 – 324.9
0 – 324.9
0 – 324.9
0 – 324.9
0 – 324.9
0 – 474.9
DT-500DI-8B
DT-500DI-8A
DT-500DRC-D
DT-500TDC-E1
CTI Curve C
DT-500DI-8C
CY-7 Curve 10
2.7
RACK MOUNTING
The Models CYD201 and CYD208 can install in a standard “size” 1/4 panel
EIA rack space. If you ordered a CYD208-DIN rack mounting adapter, follow
the installation instructions below. See Figure 2-3.
1. Remove front feet on bottom of unit and attach lower rack piece by
threading two of the four screws provided into the front feet holes.
2. Locate the two mounting hole access covers on the top of the unit.
Attach the other rack with the remaining screws.
Installation
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0.265 (6.73)
A
0.215 (5.46)
B
A
Hole Sizes:
A = 0.189 (0.480) Diameter - 4 Places
B = 0.169 (0.429) Diameter - 2 Places
Model CYD201 or CYD208 Front Panel
A
B
A
C
1.44
(35.58)
L
1.44
(35.58)
4.18 (106.17)
Figure 2-3. Model CYD208-DIN Rack Mounting
2-8
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OMEGA Model CYD201/CYD208 User’s Manual
2.8
INITIAL POWER UP SEQUENCE
The test sequence below occurs at power up.
1. All display segments light.
2. The unit displays “-201-” or “-208-”.
3. The instrument begins normal operation. Units currently selected flash.
Model CYD208s also indicate the current channel selected.
2.9
POWER UP ERRORS
On power up, the CYD201/CYD208 checks internal memory. If a problem
exists, an error message displays on the front panel of the instrument.
“Er01” indicates a hardware problem in the instrument memory. This error is
not user-correctable. First perform the procedure in Paragraph 5.3. If
unsuccessful, then call the factory.
“Er02” indicates a soft error in the instrument memory. To correct this error,
close dip switch 1 on the rear panel for at least 5 seconds, then open it.
Follow the calibration procedure described in Paragraph 5.3 after an error 2
reset.
“OL” indicates a voltage input overload. This can be caused by an open
sensor or diode sensor wired backwards.
Installation
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OMEGA Model CYD201/CYD208 User’s Manual
CHAPTER 3
OPERATION
3.0
GENERAL
This chapter covers the Units Key (Paragraph 3.1), the Channel key
(Paragraph 3.2), Scan Mode (Paragraph 3.3), Setting Dwell Times
(Paragraph 3.4), Alarm Operation (Paragraph 3.5), SoftCal™
Compensations (Paragraph 3.6), Calibration (Paragraph 3.7), Verifying
SoftCal™ Operation (Paragraph 3.8), and Erasing SoftCal™
Compensations (Paragraph 3.9).
UNITS
K °C
V °F
ON
OFF
CYD201 THERMOMETER
Figure 3-1. Model CYD201 Front Panel
UNITS
K °C
V °F
CHANNEL
ON
OFF
CYD208 THERMOMETER
Figure 3-2. Model CYD208 Front Panel
UNITS KEY
3.1
UNITS selects different units of measurement. The thermometer reads in
voltage or temperature (°C, °F, or K). Press UNITS to scroll through the
various selections.
UNITS also determines if SoftCal™ is active. Press and hold UNITS for
3 seconds. If SoftCal™ is not active, -000- appears in the display.
Operation
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3.2
CHANNEL KEY (Model CYD208 Only)
CHANNEL scrolls through the eight possible sensor channels. It also
determines if scan mode is activated. Hold 1 to 2 seconds to toggle scan
mode On or Off. A red light glows in the upper left channel display if scan
mode is active.
3.3
SCAN MODE (Model CYD208 Only)
The thermometer can scan 8 channels or monitor 1 channel. To enable
scan mode, press CHANNEL for 1 to 2 seconds to toggle scan mode On or
Off. If a light appears in upper left of channel display window, then scan
mode is On. If the light does not appear, the thermometer is in single-
channel mode. Repeat action to reverse mode.
3.4
SETTING DWELL TIMES (Model CYD208 Only)
Set the time the thermometer pauses on each channel (dwell) for 5, 10, 30,
or 60 seconds. A dwell time of 0 instructs the thermometer to skip that
particular channel. To set the dwell:
1. Hold CHANNEL for 3 seconds. Do not release.
2. While still pressing CHANNEL, use UNITS to select the desired time;
0 (skip), 5, 10, 30, or 60 seconds.
3. Repeat procedure for each desired channel. Default channel dwell is
5 seconds.
3.5
ALARM OPERATION
This section covers Alarm Setpoint (Paragraph 3.5.1), Latched and
Unlatched Alarms (Paragraph 3.5.2.), and the Alarm Fix Function
(Paragraph 3.5.3).
3.5.1 Alarm Setpoint
The alarm setpoint is a temperature which activates the alarm relay. Set it to
warn of temperatures rising above (high alarm) or falling below (low alarm) a
certain point.
NOTE: Alarm setpoints work for temperatures, not voltage. If in voltage
mode while setting an alarm setpoint, the thermometer defaults to kelvin for
the alarm setpoint.
To display the alarm setpoint, move the SET switch on the rear panel to
position 1. To change the setpoint:
1. Make sure the SET switch is in position 1.
3-2
Operation
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2. Hold UNITS until the desired temperature displays. UNITS is a toggle; if
it is released and pressed again, the temperature direction reverses. If
the temperature display increases, the alarm is a high setpoint. If the
temperature display decreases, the alarm is a low setpoint.
3. Release UNITS when the desired setpoint displays. For a Model
CYD208, press CHANNEL to display the desired channel in the channel
window and repeat the steps above to set the alarm for each channel
4. Move the SET switch back to position 0 to enable the alarm. When it
triggers, an alarm status light appears in the upper left of the
temperature display.
The alarm can be connected to another device which triggers when the
alarm activates. The 3-contact terminal block is present on the rear panel as
J3 ALARM. The alarm contacts are designated 1 COM 2 with 1 representing
the normally open state and 2 representing the normally closed state.
3.5.2 Latched And Unlatched Alarms
Alarms are either latched or unlatched. The alarm is latched when the
LATCH switch is in position 1: the alarm turns On when triggered by the
alarm setpoint, but will not automatically turn Off when the temperature
returns to within the high and low setpoint range. The alarm is unlatched
when the LATCH switch is in position 0; the alarm turns On when triggered
by the alarm setpoint, and automatically turns Off when temperatures return
to within the high and low setpoint range.
3.5.3 Alarm Fix Function (Model CYD208 Only)
Set the FIX switch on the Model CYD208 rear panel to OFF (position 0) to
continuously update the alarm relay, depending on the alarm setpoint and
sensor temperature. If the FIX switch is ON (position 1), the relay updates
only when channel 1 input is active.
3.6
SOFTCAL™ COMPENSATIONS
SoftCal™ is a simple, instrument-configured software calibration that
improves system accuracy over a specified temperature range. It reduces
the error between a CY-7 diode and the Standard Curve 10 used by the
instrument. In short, SoftCal™ generates inexpensive calibrations for CY-7
sensors used with OMEGA temperature controllers and monitors.
Operation
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SoftCal™ calibrations are made at three temperature points: liquid helium
(4.2 K), liquid nitrogen (about 77 K), and 305 K. Below is the accuracy* of
the CY-7-SD-13 sensor:
+0.5 K
+0.25 K
+0.15 K
2 K to <30 K
30 K to <60 K
60 K to <345 K
+0.25 K
+1.0 K
345 K to <375 K
375 K to 475 K
* These values generally apply to all silicon diode sensors. Only two-point
SoftCal™ calibrations appropriate for CY-7 series Band 11, 11A sensors.
This section covers the SoftCal™ Calibration Procedure (Paragraph 3.6.1),
Verifying SoftCal™ Operation (Paragraph 3.6.2), and Erasing SoftCal™
Compensations (Paragraph 3.6.3).
3.6.1 SoftCal™ Calibration Procedure
1. Turn on thermometer 30 minutes prior to operation.
2. Place the SET switch in position 1.
3. Hold UNITS until 0 kelvin (or equivalent in °C or °F) displays. The key
acts as a toggle. If the display rises, release and press again.
4. Press CAL ENABLE on rear panel with a pen tip. The display reads
"-SOF-" to indicate the unit is ready to erase the current SoftCal™
calibration. Within 2 seconds press UNITS again. The temperature
display changes from "-SOF-" to the current SoftCal™ setting.
5. Hold UNITS until the sensor temperature displays. For example, if
setting SoftCal™ for liquid helium, the display reads 4.2 K. If setting for
ice point, the display reads 0 °C.
6. Verify sensor stabilization at calibration temperature.
7. Press CAL ENABLE again. "-SOF-" again displays to indicate the unit is
ready to accept the calibration point. Within 2 seconds, press UNITS to
enter a new calibration point. (If UNITS is not pressed within 2 seconds,
the display returns to the alarm temperature). After 15 seconds, the
alarm setpoint temperature displays.
8. To enter more than one point, go back to step 5. NOTE: One point may
be entered between 1.4 K to 9.9 K. No point may be entered between
10 K and 40 K. Two points may be entered above 40 K.
9. Return the SET switch to position 0.
3-4
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3.6.2 Verifying SoftCal™ Operation
Check the status of SoftCal™ by holding UNITS for 2-3 seconds. If
SoftCal™ is not in operation, "-000-" displays.
If the first digit of the display is 1, SoftCal™ is set for below 28 K. If either
the second or third digit is 1, SoftCal™ is set for above 28 K.
3.6.3 Erasing SoftCal™ Compensations
When SoftCal™ compensations are erased, the thermometer returns to
normal operation.
1. Move the SET switch to position 1.
2. Hold UNITS until the front panel displays 0. This key is a toggle. If the
display moves in the wrong direction, release and press again.
3. Press CAL ENABLE on rear panel using a pen tip. The display changes
from 0 to "-SOF-". The alarm setpoint displays after erasing SoftCal™
compensation.
4. Move the SET switch to position 0.
Operation
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Operation
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OMEGA Model CYD201/CYD208 User’s Manual
CHAPTER 4
REMOTE OPERATION
4.0
GENERAL
The Model CYD201/CYD208 Digital Thermometer Serial Interface can be
used for both operation and service. This chapter covers the Serial Interface
(Paragraph 4.1) and Serial Interface Commands (Paragraph 4.2).
4.1
SERIAL INTERFACE
The Model CYD201/CYD208 has a serial interface for RS-232C
communications with a host computer. RS-232C is an unbalanced (single
ended), non-terminated line used over short distances (typically 10 feet or
less). The Model CYD201/CYD208 serial interface complies with the
electrical format of the RS-232C Interface Standard. The serial interface
connector is a standard 6 wire RJ-11 modular (telephone) jack.
This section covers Serial Interface Specifications (Table 4-1), Serial
Interface Connections (Paragraph 4.1.1), Serial Interface Hardware
Configuration and Adapters (Figures 4-1 & 4-2), Serial Interface Operation
(Paragraph 4.1.2), and Sample Basic and QuickBasic Programs
(Paragraphs 4.1.3 & 4.1.4 respectively).
Table 4-1. Serial Interface Specifications
Transmission:
Connector:
Three-Wire
RJ-11 Modular (Telephone) Socket
Timing Format:
Transmission Mode:
Baud Rate:
Asynchronous
Half Duplex
300
Bits per Character:
Parity Type:
1 Start, 7 Data, 1 Parity, 1 Stop
Odd
Data Interface Levels:
Terminator:
Transmits/Receives Using EIA Levels
LF (0AH)
4.1.1 Serial Interface Connections
The serial interface connector is a standard 6 wire RJ-11 modular
(telephone) jack. OMEGA Model CYD200-J10 data cables, which maintain
pin 1 polarity, simplify interconnection. OMEGA offers the Model CYD200-D
RJ-11 to DB-25 adapter and Model CYD200-B RJ-11 to DE-9 adapter to
connect to the host computer. See Figure 4-2.
Remote Operation
4-1
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J2 SERIAL I/O
PIN
DESCRIPTION
1
2
3
4
5
6
RS-232C In (RxD)
RS-232C In (RxD)
RS-232C Ground
RS-232C Ground
RS-232C Out (TxD)
RS-232C Out (TxD)
1
2
3
4
5
6
Figure 4-1. Serial I/O (RJ-11) Connector Pin Definitions
Model CYD200-B RJ-11
to DB-25 Adapter
J2 SERIAL I/O
RS-232C
Interface Output
on rear of Model
CYD201 or
CYD208
Use whichever adapter that
matches your computer
serial interface connector
Model CYD200-B
RJ-11 to DE-9 Adapter
Model CYD200-J10
RJ-11 Cable Assembly
Figure 4-2. Serial Interface Connections
4-2
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4.1.2 Serial Interface Operation
Remotely control all thermometer functions, except SoftCal™
compensations from a computer with communications software and modem.
Located on the rear panel is a RJ-11 modular socket designated J2 SERIAL
I/O for host computer connection. Accessories CYD200-J10 (RS-232C
phone cord) and CYD200-D (RJ-11 to DB-25 adapter), as well as a null
modem adapter may be required to link the serial port of the host computer
directly to the thermometer. When programming a Model CYD201/CYD208
from the serial interface, consider the following:
• Type commands in all CAPS.
• The term free field indicates a floating decimal point placed any
appropriate place in the string of digits.
• [term] in examples indicates terminating characters placed by the user or
where they appear on a returning character string from the unit.
• Leading zeros and zeros following a decimal point are not needed in a
command string, but they are sent in response to a query.
• Enter temperature to 0.1 degrees. Greater precision truncates.
Temperature is limited from 0 to 475 K.
• Place no space between commands and the variable being sent.
4.1.3 Sample Basic Program
10 OPEN “COM1:300,O,7,1,RS” AS #1 ‘Open COM port
11 PRINT “TYPE ‘QUIT’ TO EXIT”
12 PRINT
20 INPUT “ENTER COMMAND”;A$
21 IF A$ = “QUIT” THEN GOTO 100
30 A$ = A$ +CHR$(13)+CHR$(10)
40 PRINT #1,A$;
45 R = INSTR(A$,”W”)
46 IF R = 0 THEN GOTO 90
50 FOR Z = 1 TO 500: NEXT Z
60 LINE INPUT#1,B$
70 PRINT B$;
‘Print QUIT message
‘Print blank line
‘Get command to send
‘Look for QUIT then quit
‘Adding CR and LF
‘Sending command string
‘Scan CMD for W/QUERRY
‘If not a QUERRY skip PRINT
‘Short delay
‘Read back CYD201/CYD208 response
‘PRINT instrument response
‘Jump back to the beginning
‘Close COM port
90 GOTO 11
100 CLOSE #1
101 END
‘End program
Remote Operation
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4.1.4 Sample Quick Basic 4.0 Program
STARTUP: OPEN “COM1:300,O,7,1,RS” FOR RANDOM AS #1
‘open the serial port
PRINT “TYPE ‘QUIT’ TO EXIT”
RESTART: PRINT
INPUT “ENTER COMMAND”; A$
‘print ‘QUIT’ message
‘print blank line
‘get command to send
IF A$ = “QUIT” THEN GOTO FINISH ‘check for quit request
A$ = A$ + CHR$(13) + CHR$(10)
PRINT #1, A$;
R = INSTR(A$, “W”)
‘adding CR and LF
‘sending command string
‘scan for W/query
IF R = 0 THEN GOTO REJUMP
FOR Z = 1 TO 500: NEXT Z
LINE INPUT #1, B$
‘if not query skip print
‘short delay
‘read back CYD201/CYD208 response
‘print instrument response
‘jump back to beginning
‘close serial port
PRINT B$;
REJUMP: GOTO RESTART
FINISH:
CLOSE #1
END
‘end/exit program
4.2
SERIAL INTERFACE COMMAND SUMMARY
Command Function
Command Function
F0
H
L
R
WA
WS
Sensor Units for Setpoint
Y
Scan Dwell Time *
Scanner Channel Selection *
Scan Disable *
Scan Enable *
Scan and Dwell Query *
High Alarm Setpoint
Low Alarm Setpoint
Reset Alarm
Switch ID & Alarm Data Query
Sensor Reading & Alarm Status Query
YC
YH
YS
WY
* Model CYD208 Only.
Below is an explanation of the command list structure.
Brief Description of Function
Command Name
Alarm Reset.
R
Syntax of user input.
Input:
R
Nothing
Returned:
Remarks:
Information returned in
response to query.
Used to reset
the alarm.
Explanation of
returned data.
4-4
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F0
Input:
Sets Sensor Units for Temperature Display.
F0x
Returned: Nothing
Remarks: Sets sensor units for the temperature display, where
x = C (Celsius), F (Fahrenheit), K (kelvin), or V (volts).
H
Select High Alarm Setpoint Value.
Input:
Hxxx.x
Returned: Nothing
Remarks: Sets high alarm setpoint, where xxx.x = temperature setpoint
in units specified by F0 command. If the instrument is set for
volts, the alarm defaults to kelvin.
Example: H300[term] sets a high alarm setpoint of 300 degrees.
L
Select Low Alarm Setpoint Value.
Input:
Lxxx.x
Returned: Nothing
Remarks: Sets low alarm setpoint, where xxx.x = temperature setpoint
in units specified by F0 command. If the instrument is set for
volts, the alarm defaults to kelvin.
Example: L31.2[term] sets a low alarm setpoint of 31.2 degrees.
R
Y
Alarm Reset.
Input:
R
Returned: Nothing
Remarks: Resets the alarm.
Channel Dwell Time (Model CYD208 Only).
Yab
Input:
Returned: Nothing
Remarks: Sets dwell time for a given channel, where a = channel 1 - 8,
and b = the dwell time parameter as follows:
0 = zero seconds, 1 = 5 seconds, 2 = 10 seconds,
3 = 30 seconds, 4 = 60 seconds
Setting a dwell time of 0 skips the specified channel in the
sequence.
Example: Y23[term] sets the dwell time for channel 2 to 30 seconds.
Remote Operation
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YC
Input:
Channel Scanner Channel (Model CYD208 Only).
YCx
Returned: Nothing
Remarks: Asynchronously selects a scanner channel for readout
independent of scan feature, where x = channel 1 - 8.
YH
Input:
End Scanning (Model CYD208 Only).
YH
Returned: Nothing
Remarks: Halts input scan at current input channel. Place scanner on
hold when sending any other commands to scanner or
unpredictable results may occur.
YS
Input:
Begin Scanning (Model CYD208 Only).
YS
Returned: Nothing
Remarks: Starts input scan from current input channel. The instrument
skips every channel with a dwell time of zero.
WA
Input:
Switch ID and Alarm Data.
WA
Returned: For a Model CYD201, returns:
[switch ID],[high or low alarm],[alarm sign],[alarm
setpoint](CR)(LF)
For a Model CYD208, returns:
[switch ID],[high or low alarm],[alarm sign],[alarm
setpoint],[active channel number](CR)(LF)
Remarks: Provides the switch ID and alarm data. The switch ID
parameter is 0 through 3 for the Model CYD201. It is the sum
of 1 if the alarm set enable is set, plus 2 if relay latching is
desired. The switch ID parameter is 0 through 7 for the Model
CYD208. It is the sum of 1 if the alarm set enable is set, plus
2 if relay latching is desired, plus 4 if the alarm fix is enabled.
High or Low Parameter: H = high alarm, L = low alarm.
4-6
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WS
Input:
Sample Sensor Reading and Alarm Status.
WS
Returned: For a Model CYD201, returns:
[sign],[sensor reading],[units],[alarm status] (CR)(LF)
For a Model CYD208, returns:
[current channel],[sign],[sensor reading],[units], [alarm
status](CR)(LF)
Remarks: Returns the sample sensor reading and alarm status, where
A = active and I = inactive.
WY
Input:
Scan Status (Model CYD208 Only).
WY
Returned: [scan status],[current channel number],[channel which
caused the alarm state], [channel 1 dwell time],[channel 2
dwell time],...[channel 8 dwell time](CR)(LF)
Remarks: Returns instrument scan status (scanning or holding),
channel dwell information, and scan position. Scan Status
Parameter: H = holding, S = scanning. Channel Which
Caused the Alarm State Parameter = 1 through 8 or "-" if
alarm is inactive. Channel dwell times are in seconds.
Sending this command with a Model CYD201 returns N to
signify no scanner.
Remote Operation
4-7
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OMEGA Model CYD201/CYD208 User’s Manual
CHAPTER 5
SERVICE
5.0
GENERAL
This chapter covers Model CYD201/CYD208 maintenance: Model CYD201
Rear Panel Connections (Paragraph 5.1), Model CYD208 Rear Panel
Connections (Paragraph 5.2), Error Code Troubleshooting (Paragraph 5.3),
General Maintenance (Paragraph 5.4), Fuse Replacement (Paragraph 5.5),
Line Voltage Selection (Paragraph 5.6), Calibration (Paragraph 5.7), and
Serial Interface Cable and Adapters (Paragraph 5.8).
5.1
MODEL CYD201 REAR PANEL CONNECTIONS
Figure 5-1. Model CYD201 Rear Panel Connections
J1 INPUT 1: Accepts circular 4-pin connector temperature sensor (201-MC).
J2 SERIAL I/O: RJ-11 jack for serial remote communications to a host
computer. May require accessories CYD200-J10 (RJ-11 phone cord) and
CYD200-D (RJ-11 to DB-25 adapter).
J3 ALARM: Relay responds to alarm setpoints and can trigger another
device. Contact 1 is normally open, contact 2 is normally closed.
Switch: Not used.
LATCH switch: When on (position 1), turns alarm on but not off (latched) as
indicated by temperature change. When off (position 0), turns alarm off or
on (unlatched).
SET switch: Used in setting alarm setpoints and recalibration.
CAL ENABLE (Calibration Enable) pushbutton: Used during A/D Converter
Calibration. See Paragraph 5.7.2.
I ADJ (Current Adjust) trim potentiometer: Used during Current Source
Calibration. See Paragraph 5.7.1.
Service
5-1
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5.2
MODEL CYD208 REAR PANEL CONNECTIONS
Figure 5-2. Model CYD208 Rear Panel Connections
J1 INPUTS: Accepts 36-pin “D” style connector (208-MC) and multi-sensor
adapters. Adapter sits on top of thermometer and accepts up to 8
temperature sensors. Adapter designed for either circular 4-pin (2084) or
stripped wire (2081) sensors.
J2 SERIAL I/O: RJ-11 jack for serial remote communications to a host
computer. May require accessories CYD200-J10 (RS-232C phone cord)
and CYD200-D (RJ-11 to DB-25 adapter).
J3 ALARM: Relay responds to alarm setpoints and can trigger another
device. Contact 1 is normally open, contact 2 is normally closed.
FIX switch: Switches alarm functions between monitoring all channels
(position 0) or monitoring channel 1 only (position 1).
LATCH switch: When on (position 1), turns alarm on but not off (latched) as
indicated by temperature change. When off (position 0), turns alarm off or
on (unlatched).
SET switch: Used in setting alarm setpoints and recalibration.
CAL ENABLE (Calibration Enable) pushbutton: Used during A/D Converter
Calibration. See Paragraph 5.7.2.
I ADJ (Current Adjust) trim potentiometer: Used during Current Source
Calibration. See Paragraph 5.7.1.
5-2
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5.3
ERROR CODE TROUBLESHOOTING
On power up, the CYD201/CYD208 checks internal memory. If a problem
exists, an error message displays on the front panel of the instrument.
Er01 indicates a hardware problem in the instrument memory. This error is
not user-correctable.
Er02 indicates a soft error in the instrument memory. To correct this error,
use the following procedure.
1. Power up the unit and allow it to display Er02.
2. Close DIP Switch 1 (top of the switch pressed in). Leave the switch
closed for at least 5 seconds, then open DIP switch 1 (bottom of the
switch pressed in).
3. Verify the Model CYD201/CYD208 display goes through a normal power
up sequence and then displays 499.9 K.
4. The input(s) of the Model CYD201/CYD208 must now be recalibrated
per in procedure in Paragraph 5.7 before the unit can be used.
OL indicates a voltage input overload. This can be caused by an open
sensor or diode sensor wired backwards.
Before calling the factory about a persistent problem, try the procedure
below:
WARNING: This procedure erases calibration constants stored in Non-
Volatile RAM. If this procedure is used, recalibrate the instrument.
1. With power turned Off, press and hold CAL ENABLE on the back panel.
While holding CAL ENABLE, turn instrument power On.
2. If the Model CYD201/CYD208 displays Er02, follow the Calibration
procedure in Paragraph 5.7. If Er01 still displays or if the Model
CYD201/CYD208 does not respond, contact OMEGA Service.
5.4
GENERAL MAINTENANCE
Clean the CYD201/CYD208 periodically to remove dust, grease and other
contaminants. Clean the front and back panels and case with a soft cloth
dampened with a mild detergent and water solution.
NOTE: Do not use aromatic hydrocarbons or chlorinated solvents to clean
the Model CYD201/CYD208. They may react with the silk screen printing on
the back panel.
Service
5-3
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5.5
FUSE REPLACEMENT
WARNING: To prevent shock hazard, turn off instrument and
disconnect it from AC line power and all test equipment before
replacing fuse.
1. Turn POWER switch Off and disconnect power cord from unit.
Disconnect all test equipment from unit.
2. Remove all screws from rear panel. Gently pull away rear panel and
remove enclosure cover by sliding it to the back.
3. Remove fuse with a fuse puller. The fuse is located behind the
transformer as shown in Figure 5.3.
4. Replace with a 0.2 A fuse for 110 V (115 VAC) operation or a 0.1 A fuse
for 220 V (230 VAC) operation. Use slow blow fuses.
CAUTION: Replace fuse with the same type and rating as specified by
the line voltage selected.
5. Replace enclosure cover, rear panel, and all screws.
5.6
Line Voltage Configuration
The rear-panel, 3-pronged line power connector permits Model
CYD201/CYD208 operation at either 110 or 220 VAC. The configuration is
indicated on rear panel in the Line Voltage Selection Block. Use the
procedure below to change line voltage.
WARNING: To prevent shock hazard, turn off instrument and
disconnect it from AC line power and all test equipment before
changing line voltage configuration.
1. Turn power switch OFF and disconnect the power cord from the unit.
Disconnect all test equipment from unit.
2. Remove all screws from rear
panel. Gently pull away rear
panel and remove enclosure
cover by sliding it to the back.
3. Modify jumper configuration to
desired line voltage (see
Figure 5-3).
4. Replace fuse to match new
voltage requirements.
5. Replace enclosure cover, rear
panel and all screws.
Figure 5-3 Line Voltage
Jumper Configuration
5-4
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5.7
RECALIBRATION
OMEGA calibrates and certifies thermometers to original factory
specifications for a reasonable fee. You can recalibrate the thermometer to
original specifications, but OMEGA will not warrant these calibrations.
Recalibration requires a digital voltmeter (DVM) with 4½ digit resolution or
better; and 25 k and 125 k precision resistors with ±0.01% tolerance or
better.
Recalibration involves current source and analog/digital (A/D) converter
calibration. A/D calibration erases all SoftCal™ compensations; perform it
after current source calibration, not before.
5.7.1 Current Source Calibration
1. Allow 30 minute warm-up to achieve rated specifications.
2. Configure 125 k resistor as shown in Figure 5-4. Set Model CYD208 to
channel 1.
3. Connect DVM voltage leads across the resistor and adjust the I ADJ
trimpot (located on rear panel) until DVM displays a voltage of 1.2500
volts ±100 microvolts.
4. Remove DVM and resistor.
Model CYD201
Model CYD208
NOTE: Do not use a voltmeter for A/D Converter Calibration.
Figure 5-4. Calibration Connections
Service
5-5
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5.7.2 A/D Converter Calibration
NOTE: Current source calibration must be performed before A/D converter
calibration.
1. Allow 30 minute warm-up to achieve rated specifications.
2. Perform current source calibration.
3. Configure 125 k resistor as shown in Figure 5-4. Set Model 208s to
channel 1.
4. Wait 10 seconds for resistor voltage to settle.
5. Press CAL ENABLE, then within 2 seconds press UNITS. The display
window shows "-CAL-" for approximately 15 seconds.
6. Repeat procedure with 25 k resistor.
7. For Model CYD208, repeat procedure for other 7 channels. See
Figure 2-2 for pin assignments.
5.8
SERIAL INTERFACE CABLE AND ADAPTERS
TxD
Gnd
Gnd
RxD
YELLOW
GREEN
RED
BLACK
Figure 5-5. Model CYD200-J10 RJ-11 Cable Assembly Wiring Details
13
12
11
10
9
8
7
6
5
4
3
2
1
25
24
23
22
21
20
19
18
17
16
15
14
DB-25 CONNECTOR
= NOT
RxD
Gnd
TxD
USED
1
2
3
4
5
6
RJ-11
RECEPTACLE
Figure 5-6. Model CYD200-D RJ-11 to DB-25 Adapter Wiring Details
5-6
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5
4
3
2
1
9
8
7
6
DE-9 CONNECTOR
= NOT
USED
RxD
Gnd
TxD
1
2
3
4
5
6
RJ-11
RECEPTACLE
Figure 5-7. Model CYD200-B RJ-11 to DE-9 Adapter Wiring Details
Service
5-7
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5-8
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OMEGA Model CYD201/CYD208 User’s Manual
CHAPTER 6
OPTIONS AND ACCESSORIES
6.0
GENERAL
This chapter lists options, accessories, sensors, wires, and special
equipment available for the Model CYD201/CYD208.
6.1
ACCESSORIES
MODEL
DESCRIPTION OF ACCESSORY
4-pin Mating Connector for Model CYD201 and Model
2084.
201-MC
36-pin “D” Style Connector for Model CYD208.
208-MC
RJ-11 to RJ-11 Phone Cord, 10 feet (3 meters). See
Figure 6-1.
CYD200-J10
CYD200-D
CYD200-B
RJ-11 to DB-25 Adapter. Connects RJ-11 to RS-232C
Serial Port on rear of computer. See Figure 6-1.
RJ-11 to DE-9 Adapter. Connects RJ-11 to RS-232C
Serial Port on rear of computer. See Figure 6-1.
Model CYD201 calibration connector.
Model CYD208 calibration connector.
2010
2080
Screw Terminal Adapter. Connects Model CYD208 to
multiple sensor/probe assemblies with stripped ends
and non- permanent wiring. Provision for attachment to
top of thermometer. Fitted with “D” type mating
connector.
2081
Stainless steel Sensor Probe with 6-foot (1.83 m) cable
with 4 stripped ends. 4-inch (10 cm) long by 1/8 inch
(3.2 mm) diameter probe.
2082-1
2082-2
2082-3
2082-4
Stainless steel Sensor Probe with 6-foot (1.83 m) cable
with 4-pin 201-MC mating connector. 4-inch (10 cm)
long by 1/8 inch (3.2 mm) diameter probe.
Stainless steel Sensor Probe with 12-foot (3.7 m) cable
with 4 stripped ends. 6-inch (15 cm) long by 1/8 inch
(3.2 mm) diameter probe.
Stainless steel Sensor Probe with 12-foot (3.7 m) cable
with 4-pin 201-MC mating connector. 6-inch (15 cm)
long by 1/8 inch (3.2 mm) diameter probe.
Options and Accessories
6-1
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ACCESSORIES (continued)
MODEL
DESCRIPTION OF ACCESSORY
Sensor Probe. 12-foot (3.7 m) cable with CY-7-SD-13
sensor in CY mounting adapter, stripped ends. Tempera-
ture limit: 325 K (52 °C). Diode sensor epoxied (Stycast)
into center of 0.564 inch (1.43 cm) diameter by 0.20 inch
(5 mm) thick copper disk. 30 AWG copper leads anchored
to disk. Mass (excluding leads): 4.3 grams.
2083-1
Sensor Probe. 12-foot (3.7 m) cable with CY-7-SD-13
sensor in CY mounting adapter, with 4-pin CYD201-MC
mating connector. Temperature limit: 325 K (52 °C). Diode
sensor epoxied (Stycast) into center of 0.564 inch (1.43
cm) diameter by 0.20 inch (5 mm) thick copper disk. 30
AWG copper leads anchored to disk. Mass (excluding
leads): 4.3 grams.
2083-2
2084
Multi-Connector Adapter. Required with Model CYD208
when using multiple probe/cable assemblies and Model
201-MC mating connectors.
Mounting Adapter for Rack Installation. For installation in
a ¼ panel EIA rack space. See Figure 2-3.
CYD208
-DIN
6.2
MODEL CYD201/CYD208 WIRES
LSCI P/N
DESCRIPTION OF CABLE
Quad-Twist™ Cryogenic Wire. Two twisted pairs,
phosphor-bronze wire, 36 AWG, 0.127 mm (0.005 inch)
diameter.
9001-005
Duo-Twist™ Cryogenic Wire. Single twisted pair,
phosphor-bronze wire, 36 AWG, 0.127 mm (0.005 inch)
diameter.
9001-006
9001-007
Quad-Lead™ Cryogenic Wire. Phosphor-bronze wire,
flat, 32 AWG, 0.203 mm (0.008 inch) diameter.
Quad-Lead™ Cryogenic Wire. Phosphor-bronze wire,
flat, 32 AWG, 0.127 mm (0.005 inch) diameter.
9001-008
—
Any quality dual shield twisted pair wire for dewar to
Model CYD201/CYD208 connector.
6-2
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6.3
MODEL CYD201/CYD208 SENSORS
SENSOR NO.
Series DT-420
DESCRIPTION OF SENSOR
The smallest silicon diode Temperature Sensor
available. Installs on flat surfaces. Same silicon
chip as Series CY-7 and DT-471.
Silicon Diode Miniature Temperature Sensor. Same
silicon chip as CY-7 designed to install in recesses
as small as 1.6 mm dia. by 3.2 mm deep.
Series DT-450
Series CY-7
Silicon Diode Temperature Sensor. Repeatable,
interchangeable, accurate, wide range, customized
for cryogenics.
An economical version of the CY-7 for applications
where temperature measurements below 10 K are
not required.
Series DT-471
Model CYD200-B RJ-11
to DB-25 Adapter
J2 SERIAL I/O
RS-232C
Interface Output
on rear of Model
CYD201 or
CYD208
Use whichever adapter that
matches your computer
serial interface connector
Model CYD200-B
RJ-11 to DE-9 Adapter
Model CYD200-J10
RJ-11 Cable Assembly
Figure 6-1. Serial Interface Adapters
Options and Accessories
6-3
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6-4
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OMEGA Model CYD201/CYD208 User’s Manual
APPENDIX A
CURVE TABLES
A1.0 GENERAL
The following curve tables apply to the Model CYD201/CYD208: Curve 0 -
DT-500DI-8B (Table A-1), Curve 1 - DT-500DI-8A (Table A-2), Curve 2 -
DT-500DRC-D (Table A-3), Curve 3 - DT-500DRC-E1 (Table A-4), Curve 4 -
CTI Curve C (Table A-5), Curve 5 - DT-500DI-8C (Table A-6), and Curve 6 -
CY-7 Curve 10 (Table A-7).
Table A-1. Curve 0: DT-500DI-8B Voltage-Temp. Characteristics
Temp.
(K)
PROM
Voltage BP #
Temp.
(K)
PROM
Voltage BP #
Temp.
(K)
PROM
Voltage
BP #
29
4.0
4.2
4.4
4.6
4.8
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
2.41773
2.40475
2.39217
2.37946
2.36668
2.35378
2.32126
2.28869
2.25643
2.22480
2.19395
2.16053
2.13552
2.10809
2.08197
2.05687
2.00852
1.96003
1.90579
1.85614
1.80479
1.74703
1.67479
1.60665
1.53675
1.46370
1.38832
1.31868
1.26476
1.21712
1.17857
1.15106
1.13317
1.12169
19
18
17
16
15
29.0
30.0
32.0
34.0
36.0
38.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
75.0
77.4
80.0
85.0
90.0
95.0
100.0 0.92767
105.0 0.91443
110.0 0.90124
115.0 0.88776
120.0 0.87434
125.0 0.86087
130.0 0.84735
135.0 0.83377
140.0 0.82032
145.0 0.80647
150.0 0.79274
155.0 0.77896
160.0 0.76513
165.0 0.75125
1.11353
170.0 0.73733
175.0 0.72353
180.0 0.70936
185.0 0.69532
190.0 0.68125
195.0 0.66713
200.0 0.65302
205.0 0.63889
210.0 0.62475
215.0 0.61066
220.0 0.59646
225.0 0.58262
230.0 0.56877
235.0 0.55504
240.0 0.54136
245.0 0.52801
250.0 0.51469
255.0 0.50155
260.0 0.48815
265.0 0.47486
270.0 0.46148
275.0 0.44800
280.0 0.43451
285.0 0.42064
290.0 0.40675
295.0 0.39274
300.0 0.37875
305.0 0.36436
310.0 0.35002
315.0 0.33559
320.0 0.32109
325.0 0.30656
330.0 0.29222
1.10729
1.09810
1.09125
1.08547
1.08038
1.07549
1.06400
1.05273
1.04123
1.02954
1.01748
1.00528
0.99263
0.98666
0.97988
0.96711
0.95397
0.94086
7
14
13
12
11
6
28
5
4
10
9
27
26
3
2
25
8
24
23
22
21
20
1
Appendix A
A-1
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Table A-2. Curve 1: DT-500DI-8A Voltage-Temp. Characteristics
Temp.
(K)
PROM
Voltage BP #
Temp.
(K)
PROM
Voltage
Temp.
(K)
PROM
Voltage
BP #
BP #
30
4.0
4.2
4.4
4.6
4.8
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
2.46386
2.44821
2.43188
2.41500
2.39781
2.37578
2.33823
2.29906
2.26440
2.23248
2.20480
2.17716
2.14994
2.12245
2.10065
2.07844
2.03712
1.99736
1.95641
1.91202
1.85236
1.79177
1.73193
1.66870
1.59215
1.51169
1.43234
1.34993
1.28434
1.23212
1.18995
1.16027
1.14015
1.12689
17
16
15
14
13
12
29.0
30.0
32.0
34.0
36.0
38.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
75.0
77.4
80.0
85.0
90.0
95.0
100.0 0.92166
105.0 0.90798
110.0 0.89426
115.0 0.88052
120.0 0.86676
125.0 0.85298
130.0 0.83936
135.0 0.82531
140.0 0.81142
145.0 0.79749
150.0 0.78351
155.0 0.76950
160.0 0.75544
165.0 0.74135
1.11741
1.11007
1.09942
1.09178
1.08559
1.07992
1.07502
1.06307
1.05136
1.03951
1.02744
1.01475
1.00193
0.98892
0.98264
0.97557
0.96216
0.94877
0.93535
7
170.0 0.72739
175.0 0.71308
180.0 0.69891
185.0 0.68469
190.0 0.67043
195.0 0.65615
200.0 0.64185
205.0 0.62754
210.0 0.61333
215.0 0.59901
220.0 0.58502
225.0 0.57099
230.0 0.55715
235.0 0.54327
240.0 0.52983
245.0 0.51639
250.0 0.50302
255.0 0.48965
260.0 0.47625
265.0 0.46292
270.0 0.44925
275.0 0.43559
280.0 0.42178
285.0 0.40797
290.0 0.39375
295.0 0.37951
300.0 0.36515
305.0 0.35078
310.0 0.33599
315.0 0.32121
320.0 0.30643
325.0 0.29159
330.0 0.27665
29
28
27
6
5
11
10
9
26
25
4
3
2
8
24
23
22
21
20
19
18
1
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Table A-3. Curve 2: DT-500DRC-D Voltage-Temp. Characteristics
Temp.
(K)
PROM
Voltage BP #
Temp.
(K)
PROM
Voltage BP #
Temp.
(K)
PROM
Voltage
BP #
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.2
2.4
2.6
2.8
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
4.6
4.8
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
2.5984
2.5958
2.5932
2.5906
2.5880
2.5854
2.5828
2.5735
2.5643
2.5551
2.5458
2.5366
2.5226
2.5086
2.4946
2.4807
2.4667
2.4527
2.4387
2.4247
2.4108
2.3968
2.3618
2.3269
2.2919
2.2570
2.2220
2.1871
2.1521
2.1172
2.0909
2.0646
2.0119
1.9592
1.9066
1.8338
1.7610
1.6984
1.6359
1.5646
1.4932
1.4219
24
23
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
32.0
34.0
36.0
38.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
75.0
80.0
85.0
90.0
95.0
100.0 0.92647
105.0 0.91307
110.0 0.89966
115.0 0.88626
120.0 0.87286
125.0 0.85946
130.0 0.84606
135.0 0.83228
140.0 0.81850
145.0 0.80472
150.0 0.79094
155.0 0.77716
160.0 0.76338
165.0 0.74961
170.0 0.73582
175.0 0.72170
1.3505
1.3006
1.2507
1.2114
1.1720
1.1486
1.1308
1.1190
1.1116
1.1058
1.0970
1.0902
1.0850
1.0798
1.0746
1.0633
1.0520
1.0407
1.0287
1.0166
1.0046
0.99172
0.97890
0.96609
0.95327
0.93987
180.0 0.70757
185.0 0.69344
190.0 0.67931
195.0 0.65518
200.0 0.65105
205.0 0.63693
210.0 0.62280
215.0 0.60867
220.0 0.59455
225.0 0.58080
230.0 0.56707
235.0 0.55334
240.0 0.53960
245.0 0.52649
250.0 0.51337
255.0 0.50026
260.0 0.48714
265.0 0.47403
270.0 0.46057
275.0 0.44711
280.0 0.43365
285.0 0.42019
290.0 0.40613
295.0 0.39208
300.0 0.37802
305.0 0.36397
310.0 0.34940
315.0 0.33482
320.0 0.32025
325.0 0.30568
330.0 0.29111
335.0 0.27654
340.0 0.26197
345.0 0.24739
350.0 0.23325
355.0 0.21911
360.0 0.20497
365.0 0.19083
370.0 0.17774
375.0 0.16464
380.0 0.15155
22
21
20
19
18
17
16
15
30
29
8
7
14
13
12
6
5
4
11
10
9
28
10.0
11.5
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
3
27
26
25
2
1
Appendix A
A-3
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OMEGA Model CYD201/CYD208 User’s Manual
Table A-4. Curve 3: DT-500DRC-E1 Voltage-Temp. Characteristics
Temp.
(K)
PROM
Voltage BP #
Temp.
(K)
PROM
Voltage BP #
Temp.
(K)
PROM
Voltage
BP #
30
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.2
2.4
2.6
2.8
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
4.6
4.8
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
2.6591
2.6567
2.6542
2.6518
2.6494
2.6470
2.6446
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
32.0
34.0
36.0
38.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
75.0
77.35
80.0
85.0
90.0
95.0
100.0
105.0
110.0
115.0
120.0
125.0
130.0
135.0
140.0
1.6527
1.5724
1.4922
1.4120
1.3317
145.0
150.0
155.0
160.0
165.0
170.0
175.0
180.0
185.0
190.0
195.0
200.0
205.0
210.0
215.0
220.0
225.0
230.0
235.0
240.0
245.0
250.0
255.0
260.0
265.0
270.0
275.0
280.0
285.0
290.0
295.0
300.0
305.0
310.0
315.0
320.0
325.0
330.0
0.8035
0.7896
0.7758
0.7620
0.7482
0.7344
0.7202
0.7060
0.6918
0.6777
0.6635
0.6493
0.6351
0.6210
0.6068
0.5926
0.5789
0.5651
0.5514
0.5377
0.5246
0.5115
0.4984
0.4853
0.4722
0.4588
0.4454
0.4320
0.4186
0.4045
0.3904
0.3763
0.3622
0.3476
0.3330
0.3184
0.3038
0.2893
1.2837
1.2357
1.1877
1.1559
1.1365
1.1239
1.1150
1.1080
1.0981
1.0909
1.0848
1.0797
1.0746
1.0630
1.0515
1.0399
1.0284
1.0159
1.0035
0.9911
0.9849
0.9780
0.9649
0.9518
0.9388
0.9257
0.9122
0.8988
0.8853
0.8718
0.8584
0.8449
0.8311
0.8173
7
29
28
27
2.6355
2.6265
2.6175
2.6084
2.5994
2.5868
2.5742
2.5616
2.5490
2.5364
2.5221
2.5077
2.4934
2.4791
2.4648
2.4290
2.3932
2.3574
2.3216
2.2858
2.2500
2.2142
2.1784
2.1516
2.1247
2.0708
2.0170
1.9632
1.9011
1.8390
1.7769
1.7148
21
20
19
18
17
16
15
14
13
6
12
11
4
3
2
26
25
9
8
1
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OMEGA Model CYD201/CYD208 User’s Manual
Table A-5. Curve 4: CTI Diode Voltage-Temp. Characteristics
Temp.
(K)
PROM
Voltage BP #
Temp.
(K)
PROM
Voltage BP #
Temp.
(K)
PROM
Voltage
BP #
29
28
27
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
32.0
34.0
36.0
38.0
40.0
45.0
50.0
1.4000
55.0
60.0
65.0
70.0
75.0
77.4
80.0
85.0
90.0
1.0235
190.0
195.0
200.0
205.0
210.0
215.0
220.0
225.0
230.0
235.0
240.0
245.0
250.0
255.0
260.0
265.0
270.0
275.0
280.0
285.0
290.0
295.0
300.0
305.0
310.0
315.0
320.0
0.6545
0.6408
0.6270
0.6133
0.5995
0.5858
0.5720
0.5583
0.5445
0.5308
0.5170
0.5032
0.4896
0.4757
0.4620
0.4481
0.4341
0.4197
0.4050
0.3911
0.3775
0.3640
0.3510
0.3382
0.3243
0.3106
0.2968
1.3850
1.3656
1.3400
1.3161
1.2750
1.2350
1.1910
1.1500
1.1290
1.1162
1.1135
1.1109
1.1084
1.1058
1.1033
1.1007
1.0981
1.0955
1.0929
1.0903
1.0851
1.0799
1.0747
1.0693
1.0640
1.0505
1.0370
21
20
1.0100
0.9958
0.9822
0.9690
0.9626
0.9560
0.9440
0.9314
0.9184
0.9049
0.8907
0.8769
0.8625
0.8500
0.8376
0.8245
0.8109
0.7971
0.7828
0.7685
0.7543
0.7400
0.7255
0.7114
0.6972
0.6830
0.6690
8
26
19
18
17
16
15
25
24
23
95.0
100.0
105.0
110.0
115.0
120.0
125.0
130.0
135.0
140.0
145.0
150.0
155.0
160.0
165.0
170.0
175.0
180.0
185.0
14
13
7
6
12
11
10
9
5
4
3
2
22
1
Appendix A
A-5
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OMEGA Model CYD201/CYD208 User’s Manual
Table A-6. Curve 5: DT-500DI-8C Voltage-Temp. Characteristics
Temp.
(K)
PROM
Voltage BP #
Temp.
(K)
PROM
Voltage BP #
Temp.
(K)
PROM
Voltage
BP #
29
4.0
4.2
4.4
4.6
4.8
5.0
5.2
5.4
5.6
5.8
6.0
6.5
7.0
7.5
8.0
8.5
9.0
2.6187
2.6074
2.5956
2.5834
2.5709
2.5580
2.5484
2.5312
2.5173
2.5033
2.4890
2.4524
2.4151
2.3773
2.3394
2.2976
2.2643
2.2277
2.1919
2.1566
2.1221
2.0881
2.0545
2.0211
1.9875
1.9537
1.9193
1.8843
1.8480
1.8110
1.7748
1.7441
1.7047
1.6702
1.6361
1.6022
1.5676
1.5316
1.4950
1.4218
1.3461
1.2840
23
22
21
20
19
18
17
16
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
35.0
36.0
37.0
38.0
39.0
40.0
42.0
44.0
46.0
48.0
50.0
52.0
54.0
56.0
58.0
60.0
65.0
70.0
75.0
77.4
80.0
85.0
90.0
95.0
100.0
105.0
110.0
115.0
120.0
125.0
130.0
1.2317
1.1900
1.1602
135.0
140.0
145.0
150.0
155.0
160.0
165.0
170.0
175.0
180.0
185.0
190.0
195.0
200.0
205.0
210.0
215.0
220.0
225.0
230.0
235.0
240.0
245.0
250.0
255.0
260.0
265.0
270.0
275.0
280.0
285.0
290.0
295.0
300.0
305.0
310.0
315.0
320.0
325.0
330.0
0.8377
0.8243
0.8108
0.7974
0.7837
0.7701
0.7564
0.7427
0.7289
0.7152
0.7013
0.6874
0.6734
0.6595
0.6455
0.6315
0.6176
0.6036
0.5898
0.5761
0.5625
0.5490
0.5358
0.5226
0.4096
0.4966
0.4836
0.4705
0.4574
0.4442
0.4307
0.4171
0.4035
0.3898
0.3758
0.3618
0.3477
0.3336
0.3194
0.3054
1.1402
1.1269
1.1173
1.1100
1.1039
1.0991
1.0949
1.0913
1.0879
1.0850
1.0822
1.0795
1.0770
1.0746
1.0697
1.0649
1.0603
1.0558
1.0512
1.0467
1.0421
1.0376
1.0330
1.0285
1.0168
1.0049
0.9930
0.9870
0.9805
0.9680
0.9553
0.9427
0.9297
0.9168
0.9038
0.8907
0.8777
0.8643
0.8510
7
6
28
27
15
14
13
12
9.5
5
4
10.0
10.5
11.0
11.5
12.0
12.5
13.0
13.5
14.0
14.5
15.0
15.5
16.0
16.5
17.0
17.5
18.0
18.5
19.0
19.5
20.0
21.0
22.0
23.0
11
10
3
2
26
9
8
1
25
24
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OMEGA Model CYD201/CYD208 User’s Manual
Table A-7. Curve 6: CY-7 Voltage-Temp. Characteristics
Temp.
(K)
PROM
Voltage BP #
Temp.
(K)
PROM
Voltage
Temp.
(K)
PROM
Voltage
BP #
BP #
13
29
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4.0
4.2
4.4
4.6
4.8
5.0
5.2
5.4
5.6
5.8
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
1.69808
1.69674
1.69521
1.69355
1.69177
1.68987
1.68912
1.68574
1.68352
1.68121
1.67880
1.67632
1.67376
1.67114
1.66845
1.66571
1.66292
1.66009
1.65721
1.65430
1.65134
1.64833
1.64529
1.64219
1.64112
1.63587
1.63263
1.62602
1.61920
1.61220
1.60506
1.59782
1.59047
1.58303
1.57551
1.56792
1.56027
1.54097
1.52166
1.50272
1.48443
1.46700
1.44850
1.43488
1.42013
1.40615
1.39287
1.38021
25
12.0
12.5
13.0
13.5
14.0
14.5
15.0
15.5
16.0
16.5
17.0
17.5
18.0
18.5
19.0
19.5
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
35.0
36.0
37.0
38.0
39.0
40.0
42.0
44.0
46.0
48.0
50.0
52.0
54.0
56.0
58.0
60.0
65.0
1.36687
1.35647
1.34530
1.33453
1.32412
1.31403
1.30422
1.29340
1.28527
1.27607
1.26702
1.25810
1.24928
1.24053
1.23184
1.22314
1.21555
1.19645
1.17705
1.15558
1.13598
1.12463
1.11896
1.11517
1.11202
1.10945
1.10702
1.10465
1.10263
1.10060
1.09864
1.09675
1.09477
1.09309
1.09131
1.08955
1.08781
1.08436
1.08105
1.07748
1.07402
1.07053
1.06700
1.06346
1.05988
1.05629
1.05277
1.04353
70.0
75.0
77.4
80.0
85.0
90.0
95.0
1.03425
1.02482
1.02044
1.01525
1.00552
0.99565
0.98574
28
27
26
12
24
100.0 0.97550
105.0 0.96524
110.0 0.95487
115.0 0.94455
120.0 0.93383
125.0 0.92317
130.0 0.91243
135.0 0.90161
140.0 0.89082
145.0 0.87976
150.0 0.86873
155.0 0.85764
160.0 0.84650
165.0 0.83541
170.0 0.82404
175.0 0.81274
180.0 0.80138
185.0 0.78999
190.0 0.77855
195.0 0.76717
200.0 0.75554
205.0 0.74398
210.0 0.73238
215.0 0.72075
220.0 0.70908
225.0 0.69737
230.0 0.68580
235.0 0.67387
240.0 0.66208
245.0 0.65026
250.0 0.63841
255.0 0.62654
260.0 0.61465
265.0 0.60273
270.0 0.59080
275.0 0.57886
280.0 0.56707
285.0 0.55492
290.0 0.54294
295.0 0.53093
300.0 0.51892
11
10
9
23
22
21
20
19
18
8
7
17
16
15
14
6
Appendix A
A-7
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OMEGA Model CYD201/CYD208 User’s Manual
Table A-7. Curve 6: CY-7 Voltage-Temp. Characteristics (Continued)
Temp.
(K)
PROM
Voltage BP #
Temp.
(K)
PROM
Voltage
Temp.
(K)
PROM
Voltage
BP #
BP #
305.0 0.50689
310.0 0.49484
315.0 0.48278
320.0 0.47069
325.0 0.45858
330.0 0.44647
335.0 0.43435
340.0 0.42238
345.0 0.41003
350.0 0.39783
355.0 0.38561
360.0 0.37337
365.0 0.36110
370.0 0.34881
375.0 0.33650
380.0 0.32416
385.0 0.31180
390.0 0.29958
395.0 0.28700
400.0 0.27456
405.0 0.26211
410.0 0.24963
415.0 0.23714
420.0 0.22463
425.0 0.21212
430.0 0.19961
435.0 0.18696
440.0 0.17464
445.0 0.16221
450.0 0.14985
455.0 0.13759
460.0 0.12536
465.0 0.11356
470.0 0.10191
475.0 0.09032
3
4
5
2
1
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NOTES
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NOTES
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TEMPERATURE
Thermocouple, RTD & Thermistor Probes & Assemblies
Connector Systems and Panels
Wire: Thermocouple, RTD, and Thermistor
Calibrators and Ice Point References
Recorders, Controllers, and Process Monitors
Data Acquisition Modules and Data Loggers
Computer Sensor Interface
PRESSURE/STRAIN
Transducers
Strain Gauges
Load Cells
Pressure Gauges
Instrumentation
FLOW
Rotameters
Flowmeter Systems
Air Velocity Indicators
Turbine/Paddlewheel Systems
Vortex Meters and Flow Computers
pH
Electrodes
Benchtop/Laboratory Meters
Controllers
Calibrators/Simulators
Transmitters
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