Omega Thermometer DP119 RTD User Manual

Made in USA  
UserÕs Guide  
®
DP119-RTD  
Miniature Panel  
Thermometer  
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TABLE OF CONTENTS  
SECTION  
PAGE  
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii  
Models Available . . . . . . . . . . . . . . . . . . . . . . . . .iii  
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1  
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1  
Safety Considerations . . . . . . . . . . . . . . . . . . . . .2  
About the Meter . . . . . . . . . . . . . . . . . . . . . . . . .3  
Front of the Meter . . . . . . . . . . . . . . . . . . . . . . . .3  
Back of the Meter . . . . . . . . . . . . . . . . . . . . . . . .4  
Connector Description . . . . . . . . . . . . . . . . . . . . .4  
Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . .5  
Main Board Power Jumpers . . . . . . . . . . . . . . . .5  
Changing the Meter Parameters . . . . . . . . . . . . .7  
Installation and Panel Mounting . . . . . . . . . . . . .10  
Sensor Input Connections . . . . . . . . . . . . . . . . .12  
Analog Output Connections . . . . . . . . . . . . . . . .14  
Display Hold Connections . . . . . . . . . . . . . . . . .15  
Main Power Connections . . . . . . . . . . . . . . . . .16  
Disassembly/Assembly . . . . . . . . . . . . . . . . . . .18  
Operation and Calibration . . . . . . . . . . . . . . . . .20  
Equipment Required . . . . . . . . . . . . . . . . . . . . .20  
Calibration Procedure . . . . . . . . . . . . . . . . . . . .21  
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . .23  
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26  
Section 1  
1.1  
1.2  
Section 2  
2.1  
2.2  
2.3  
Section 3  
3.1  
3.2  
3.3  
3.4  
3.5  
3.6  
3.7  
3.8  
Section 4  
4.1  
4.2  
Section 5  
Section 6  
i
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PREFACE  
Manual Objectives: This manual shows you how to set up and  
use the RTD Panel Thermometer.  
This meter is an economical Miniature Temperature Panel  
Thermometer featuring a large display with a linearized analog  
output that is supplied as a standard feature.  
Each of the models* can be converted by the user to display in  
degrees Fahrenheit or Celsius between one degree and a tenth  
degree resolution.  
RTD is an abbreviation for resistive temperature detector. The  
meter is designed to measure 100 ohm platinum resistance with  
0.00385 temperature coefficient, also known as the European  
curve. The RTD will change resistance with a change in  
temperature. When using a 2-wire measurement configuration,  
lead wire impedance can contribute significant error to the  
temperature measurement. When using long lead wires a 3- or  
4-wire measurement configuration is recommended.  
The meter is available in platinum RTD with 2-, 3-, or 4-wire  
connections. All of the models listed in Table 1-1 come standard  
with red LEDs, and can be ordered with a green LED display as  
an option. The part numbers would then end with Ò-GR".  
Also, these meters can be ordered with different power  
configurations. Refer to Table 1-3 for available choices.  
*Refer to Table 1-1 for the complete listing of models available.  
ii  
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MODELS AVAILABLE  
TABLE 1-1  
RTD MODELS AVAILABLE  
The following 3-1/2 digit mini RTD panel meters are  
available and discussed in this OperatorÕs Manual.  
MODEL  
TYPE  
¡C or ¡F  
RESOLUTION  
DP119-MF1  
DP119-MF2  
DP119-MC1  
DP119-MC2  
RTD  
RTD  
RTD  
RTD  
F
F
C
C
1.0¡F  
0.1¡F  
1.0¡C  
0.1¡C  
The accuracies and ranges are listed in Section 5.  
Note  
TABLE 1-2  
Power Options Available  
MODEL  
POWER  
DP119-Mxx  
115 Vac ±15%, 50/60 Hz  
230 Vac ±15%, 50/60 Hz  
9-26 Vdc @ 110mA max.  
100 Vac ±15%, 50/60 Hz  
24 Vac ±15%, 50/60 Hz  
DP119-Mxx type-230  
DP119-Mxx type-9/26  
DP119-Mxx type-100  
DP119-Mxx type-24  
iii  
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TABLE 1-3  
Other Models Available  
The following 3-1/2 digit mini thermocouple panel  
thermometers are discussed in a separate manual.  
MODEL  
TYPE  
¡C or ¡F  
RESOLUTION  
DP119-JF1  
DP119-JF2  
DP119-JC1  
DP119-JC2  
J
J
J
J
F
F
C
C
1.0¡F  
0.1¡F  
1.0¡C  
0.1¡C  
DP119-KF1  
DP119-KF2  
DP119-KC1  
DP119-KC2  
K
K
K
K
F
F
C
C
1.0¡F  
0.1¡F  
1.0¡C  
0.1¡C  
DP119-TF1  
DP119-TF2  
DP119-TC1  
DP119-TC2  
T
T
T
T
F
F
C
C
1.0¡F  
0.1¡F  
1.0¡C  
0.1¡C  
DP119-EF1  
DP119-EF2  
DP119-EC1  
DP119-EC2  
E
E
E
E
F
F
C
C
1.0¡F  
0.1¡F  
1.0¡C  
0.1¡C  
iv  
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NOTES, WARNINGS and CAUTIONS  
Information that is especially important to note is identified by  
these labels:  
NOTE: provides you with information that is important  
to successfully setup and use the Programmable  
Digital Meter.  
Note  
CAUTION or WARNING: tells you about the risk of  
electric shock.  
CAUTION, WARNING or IMPORTANT: tells you of  
circumstances or practices that can effect the meter's  
functionality and must refer to accompanying  
documents.  
v
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SECTION 1 INTRODUCTION  
1.1 UNPACKING  
Remove the Packing List and verify that all equipment has been  
received. If there are any questions about the shipment, use the  
phone number for the Customer Service Department nearest  
you.  
Upon receipt of shipment, inspect the container and equipment  
for any signs of damage. Take particular note of any evidence of  
rough handling in transit. Immediately report any damage to the  
shipping agent.  
The carrier will not honor any claims unless all shipping  
Note  
material is saved for their examination. After examining  
and removing contents, save packing material and  
carton in the event reshipment is necessary.  
Verify that you received the following items in the shipping box:  
QTY DESCRIPTION  
1 Panel Thermometer with 3 small connectors plugged  
into the rear of the meter.  
1 OperatorÕs Manual  
1
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1.2 SAFETY CONSIDERATIONS  
This device is marked with the international caution symbol. It is important to read this  
manual before installing or commissioning this device as it contains important  
information relating to Safety and EMC (Electromagnetic Compatibility).  
Unpacking & Inspection  
Unpack the instrument and inspect for obvious shipping damage. Do not attempt to  
operate the unit if damage is found.  
Note  
This instrument is a panel mount device protected in accordance with Class I of EN  
61010 (115/230 AC power connections). Installation of this instrument should be done  
by Qualified personnel. In order to ensure safe operation, the following instructions  
should be followed.  
This instrument has no power-on switch. An external switch or circuit-breaker shall be included in  
the building installation as a disconnecting device. It shall be marked to indicate this function, and  
it shall be in close proximity to the equipment within easy reach of the operator. The switch or  
circuit-breaker shall not interrupt the Protective Conductor (Earth wire), and it shall meet the relevant  
requirements of IEC 947–1 and IEC 947-3 (International Electrotechnical Commission). The switch  
shall not be incorporated in the mains supply cord.  
Furthermore, to provide protection against excessive energy being drawn from the mains supply in  
case of a fault in the equipment, an overcurrent protection device shall be installed.  
• The Protective Conductor must be connected for safety reasons. Check that the power  
cable has the proper Earth wire, and it is properly connected. It is not safe to operate  
this unit without the Protective Conductor Terminal connected.  
• Do not exceed voltage rating on the label located on the top of the instrument housing.  
• Always disconnect power before changing signal and power connections.  
• Do not use this instrument on a work bench without its case for safety reasons.  
• Do not operate this instrument in flammable or explosive atmospheres.  
• Do not expose this instrument to rain or moisture.  
Note  
• Unit mounting should allow for adequate ventilation to ensure instrument does not  
exceed operating temperature rating.  
• Use electrical wires with adequate size to handle mechanical strain and power  
requirements. Install without exposing bare wire outside the connector to minimize  
electrical shock hazards.  
EMC Considerations  
• Whenever EMC is an issue, always use shielded cables.  
• Never run signal and power wires in the same conduit.  
• Use signal wire connections with twisted-pair cables.  
• Install Ferrite Bead(s) on signal wires close to the instrument if EMC problems  
persist.  
2
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SECTION 2 ABOUT THE METER  
2.1 Front of the Meter  
Figure 2-1 shows the panel thermometer.  
Figure 2-1. Panel Thermometer  
Features:  
Display:3 1/2 Digit, 7-Segment Red or Green LED  
Full-size:14.2 mm (0.56") LED Display  
Analog Output Standard  
1/8 DIN Standard Panel Cutout  
Removable Screw-Clamp Cable Connector  
Display Hold Capability  
3
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2.2 Back of the Meter  
Figure 2-2 illustrates the rear of the meter.  
1
2
3
1
2
3
1
2
3
4
P1  
P2  
P3  
Figure 2-2. Rear View Showing P1, P2, P3 Locations  
2.3 Connector Description  
Connector Description  
(AC) Earth Ground  
(AC) Neutral  
(AC) Line  
(DC) -DC Return  
Connector PIN #  
P1  
P1  
P1  
P1  
P1  
P1  
P2  
P2  
P2  
P3  
P3  
P3  
P3  
1
2
3
1
2
3
1
2
3
1
2
3
4
(DC) +DC  
(DC) No Connection (Not used)  
Display Hold (Active Low)  
Analog Return  
Analog Output  
RTD Input  -EXC  
RTD Input  Signal Lo  
RTD Input  Signal Hi  
RTD Input  +EXC  
  For RTD input wires, refer to Figure 3-3 thru 3-6.  
4
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SECTION 3 GETTING STARTED  
3.1 Main Board Power Jumpers  
Caution: The meter has no power-on switch, so it will  
be in operation as soon you apply power.  
The meter can be configured to operate on 115VAC or  
230VAC by the proper combination of the soldered wire  
jumpers that are located on the printed circuit board.  
The meter is set at the factory to be powered by the  
voltage specified at the time of ordering. The same  
transformer is used for either configuration, so all you  
need to do is to select the jumpers as described in this  
section.  
Important: These changes must be performed by a  
qualified technician.  
Note  
To change the Factory preset jumpers, do the following  
steps:  
Disconnect the power from the unit before proceeding.  
1. Remove the main board from the case. Refer to  
Disassembly/Assembly Section 3.8.  
2. Locate the solder jumpers W1, W2, and W3 (located  
near the edge of the main board alongside the  
transformer).  
3. If your power requirement is 115 V ac, solder jumpers  
W1 and W3 should be wired, but jumper W2 should  
not. If your power requirement is 230 Vac, solder  
jumper W2 should be wired, but jumpers W1 and W3  
should not.  
5
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Voltage Jumper Pin Settings  
AC VOLTAGE  
INSTALL  
W1, W3  
W2  
REMOVE  
W2  
W1, W3  
115VAC  
230VAC  
Figure 3-1 shows the location of solder jumpers W1 through W3.  
S2  
S4  
ZERO  
4
3
2
1
3
2
1
(COMPONENT SIDE)  
P3  
P2  
S3  
S5  
TRANSFORMER  
3
2
1
P1  
W1 W2  
W3  
SPAN  
Figure 3-1. Power Jumper Locations  
6
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3.2 Changing the Meter Parameters  
The proper combinations of jumper plugs S1, S2, S3, S4, and S5  
inside the meter allow you to change various parameters of the  
meter. These parameters include resolution, range, units, RTD  
sensor configuration and sensor break configuration. You can  
change the parameters by moving the plugs on one or several of  
the jumper locations. Keep in mind that the meter is factory set  
for 3-wire RTD, and for the upscale position.  
Figure 3-2 shows the location of the jumper plugs S1 through S5.  
ZERO  
SPAN  
UNUSED PLUG POSITION  
A
C
S1  
B
S1  
A
C
G
D
B
E
F
S2  
S3  
S4  
A
S5  
I
H
B
A
A
C
S2  
S4  
ZERO  
4
3
2
1
3
2
1
(COMPONENT SIDE)  
P3  
P2  
S3  
S5  
TRANSFORMER  
3
2
1
P1  
W1 W2  
W3  
SPAN  
Figure 3-2. Jumper Plugs S1 through S5  
7
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The following tables summarizes what parameters you can  
change.  
TABLE 3-1 Range Parameters  
Option  
*-MF1  
*-MF2  
*-MC1  
*-MC2  
F/C Resolution  
Range  
S1 S4 S5  
¡F  
¡F  
¡C  
¡C  
1¡  
-328 to + 1562¡F  
-199.9 to + 199.9¡F  
-200 to + 850¡C  
-199.9 to + 199.9¡C  
--  
C
--  
A
--  
A
--  
A
C
B
B
0.1¡  
1¡  
0.1¡  
C
* Refer to Table 1-1, for complete models (preface section).  
TABLE 3-2 2-, 3-, 4-Wire, Upscale, Downscale Configuration  
Configuration  
S2  
S3  
S3  
Upscale (Default)  
A, B, E, F  
Downscale  
C, D, G, H  
C, D, G, H  
2- or 4-wire RTD  
--  
--  
3-Wire RTD  
A
I
A, B, E, F  
Note  
3-Wire input connection is standard. For 2- or 4-Wire  
remove S2-A and S3-I  
8
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Figure 3-3 gives an example of how to set S4 and S5 to configure  
a MF1 meter option. There is a jumper plug across A on S4 and  
another jumper plug across A on S5. B and C on S5 are not used.  
S4  
A
S5  
B
A C  
JUMPER PLUG  
COVERING BOTH PINS  
JUMPER PLUG  
COVERING  
TWO PINS  
OVER "A"  
Figure 3-3. Example of How to Set Meter Option MF1  
(jumpers S4 and S5)  
SENSOR BREAK PROTECTION:  
The proper combination of jumpers on S3 will determine the  
direction in which the display and analog output will go if the  
RTD sensor breaks (upscale or downscale). The meter is factory  
set to upscale break protection. If the sensor breaks, the display  
and analog signal will increment (upscale) and the 3 least  
significant digits will then go blank. If you require downscale  
break protection, refer to Table 3-2 to change the S3 jumper  
configuration.  
9
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Section 3.3 Installation and Panel Mounting  
Figure 3-4 shows the panel cutout dimensions, the dimensions  
for the panel thickness, and the backplate for mounting the unit  
in a panel. Connections will be done after mounting the unit.  
1. Remove the 2 phillips screws from behind the display (you  
don't have to go inside the meter) holding the rectangular  
backplate to the meter. Remove the backplate and set aside.  
2. Cut or punch a hole in the panel where you want the meter  
to go. The panel can be as thick as 0.25" (6.4mm) to as thin  
as 0.03" (0.8mm).  
3. Insert the meter into the panel cutout.  
4. From the rear of the panel, slide the backplate over the case  
(smooth side out).  
5. Install the 2 phillips screws to secure the meter in 1/8 DIN  
mount. Center the meter in hole prior to tightening screws.  
10  
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PANEL THICKNESS  
0.25 [6.4] MAX  
0.03 [0.8] MIN  
1/8 DIN PANEL CUTOUT  
0.06  
[1.5]  
4PLCS  
R
1.772 +0.024/-.000  
[45.0 +0.61/-0.00]  
3.622 +0.032/-.000  
[92.00 +0.81/-0.00]  
SCREWS  
METER  
BEZEL  
LENS  
BACKPLATE  
PANEL WITH  
1/8 DIN CUTOUT  
Figure 3-4. Installation Information  
11  
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3.4 Sensor Input Connections  
The RTD sensor (see Figure 3-5), can be wired in three different  
ways. They are 2-, 3-, and 4-wire configurations. The meter is  
factory set internally to a 3-wire setup. If you wish to change it,  
refer to Table 3-2.  
2-Wire RTD:  
Externally wire the P3 connector according to Figure 3-6. Keep  
in mind that you will need to jumper pins 1 and 2 on P3 together,  
and jumper pins 3 and 4 on P3 together. Use 24 AWG wire. The  
black lead goes to Pin 1 or 2 and the red lead goes to Pin 3 or 4.  
3-Wire RTD:  
Externally wire the P3 connector according to Figure 3-7. Pin 4  
on the P3 connector is not used.  
4-Wire RTD:  
Externally wire the P3 connector according to Figure 3-8.  
1
2
3
4
Screws  
underneath  
Figure 3-5. RTD P3 Connector  
See Figure 2-2 for the location of the P3 connector.  
12  
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3.4 Sensor Input Connections (Continued)  
P3  
RED*  
+ Excitation 4  
Signal Hi  
Signal Lo  
- Excitation 1  
3
2
METER  
RTD  
BLACK*  
Figure 3-6. 2-Wire RTD Wiring  
P3  
NOT USED  
+ Excitation 4  
RED*  
BLACK*  
BLACK*  
Signal Hi  
Signal Lo  
3
2
METER  
RTD  
- Excitation 1  
Figure 3-7. 3-Wire RTD Wiring  
P3  
+ Excitation 4  
RED* (+Excitation)  
RED* (Signal Hi)  
BLACK* (Signal Lo)  
BLACK* (-Excitation)  
Signal Hi  
Signal Lo  
3
2
METER  
RTD  
- Excitation 1  
Figure 3-8. 4-Wire RTD Wiring  
Note  
Refer to Table 3-1 and Table 3-2 for internal jumper  
settings.  
* Wire colors are for OMEGA RTD wiring only.  
13  
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3.5 Analog Output Connections  
The analog output is a linearized millivolt signal that is equivalent  
to the displayed temperature. It comes as a standard feature  
with every unit. The resolution of the analog output is no greater  
than the resolution of the display.  
Note  
The analog output is a non-isolated signal.  
To access the analog signal, attach copper wire to the 3-pin  
female connector that is supplied with the meter. Refer to  
Figure 3-9 for wiring instructions. Plug the female connector into  
the P2 (male) connector at the rear of the meter.  
Figure 2-2 shows the location of the P2 connector on the meter.  
Note that this connector shares a common return with the  
ÒDisplay Hold" function.  
+
Output  
mV  
RETURN  
1
2
3
Screws  
underneath  
Figure 3-9. Analog Output Connections (P2)  
14  
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3.6 Display Hold Connections  
The ÒDisplay Hold" function can be used to freeze the display.  
Connect a single pole, single throw (SPST) switch between pins  
1 and 2 on the P2 connector. The display will stop updating when  
this switch is on. When this switch is off, the display will update  
itself 2.5 times per second.  
To access the ÒDisplay Hold" function, attach copper wire to the  
3-pin female connector that is supplied with the meter. Refer to  
Figure 3-10 for wiring instructions. This connector shares a  
common return with the Analog Output. Plug the female  
connector into the P2 connector at the rear of the meter.  
Figure 2-2 shows the location of the P2 connector on the meter.  
Switch  
Display Hold  
RETURN  
P2  
1
2
3
Screws  
underneath  
Figure 3-10. Display Hold Connections  
15  
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3.7 Main Power Connections  
Connect the ac main power connections as shown below.  
WARNING: Do not connect ac power to your meter until  
you have completed all input and output connections.  
Failure to do so may result in injury! This device must only  
be installed electrically by specially trained electrician with  
corresponding qualifications. The main power input to the  
unit as well as the AC input signal to be measured must  
agree with the wiring instruction.  
The meter is factory set to the power specified by the customer  
at the time of ordering. The voltage is printed on the Label under  
Input power.  
Refer to Section 3-2 to convert from one  
configuration to another  
Note  
To connect power to the unit, attach wires from the ~AC power  
cord to the orange 3-pin female connector that is supplied with  
the meter. Refer to Figure 3-11 for wiring instructions. Plug the  
female connector into the orange P1 (male) connector at the  
rear of the meter.  
Figure 2Ð2 shows the location of P1 on the meter.  
EARTH  
NEUTRAL  
LINE  
GREEN WIRE  
©
N
L
P1  
1
FUSE  
ORANGE  
CONNECTOR  
2
SWITCH  
3
Check for proper Earth grounding in the  
power distribution system (single phase).  
Screws  
underneath  
Figure 3-11. ~AC Connector Wiring (P1)  
16  
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DC WIRING  
The meter can be configured at the factory to operate on a 9Ð26  
VDC non-isolated power. The DC voltage option is specified at  
the time of ordering. See Table 1-3 for model number listing. An  
AC powered meter cannot be converted to a DC powered meter  
or vice versa.  
To connect power to the unit, attach the DC power wires to the  
orange 3-pin female connector that is supplied with the meter.  
Refer to Figure 3-12 for wiring instructions. Plug the female  
connector into the orange P1 (male) connector at the rear of the  
meter.  
Figure 2-2 shows the location of P1 on the meter.  
No Connection N/C  
+ DC  
External  
Power Supply  
– DC  
P1  
1
ORANGE  
CONNECTOR  
2
3
Screws  
underneath  
Figure 3-12.  
=DC Power Connector Wiring (P1)  
17  
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3.8 Disassembly/Assembly  
You must go through the following steps in order to  
Note  
remove the printed circuit board from the case if you want  
to change from 115VAC to 230VAC (or vice versa) or to  
change from Fahrenheit to Celsius (or vice versa). These  
changes must be performed by a qualified technician in  
order to avoid damage to the unit.  
WARNING: Do not connect ac power to your meter until  
you have completed all input and output connections.  
Failure to do so may result in injury!  
1. Remove power and all wire connections from the unit.  
2. Unplug the three connectors (P1, P2, and P3) from the  
back of the meter. Grasp them firmly on the top and  
bottom of the connector and pull. Figure 3-13 shows the  
location of the three connectors.  
3. Remove the friction fit lens by prying down and forward  
from the top of the meter. Remove the mounting screws  
from the rear of the panel backplate. Slide the unit out of  
the panel (if it is installed in a panel).  
4. The printed circuit board is held in place by a tab and  
notch system located next to the P1 connector, pin 1  
(refer to Figure 3-13). The tab is on the case and the  
notch is on the edge of the PC Board. Hold the meter with  
the display facing away from you. Gently pry the tab (on  
the back corner of the case) out with the edge of your  
finger, while pushing the back of the PC Board out  
through the front of the meter. The PC Board will slide out  
the front, free from the case.  
18  
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PULL TAB HERE  
PC BOARD  
PUSH HERE  
1
2
3
1
2
3
1
2
3
4
P1  
P2  
P3  
Figure 3-13. Removing the PC Board from the Case  
When re-installing the printed circuit board:  
1. Hold the case (with the two mounting holes facing upwards  
and to the right side of the case) in the left hand.  
2. Hold the printed circuit board with the components showing  
(soldered side down) in the right hand.  
3. Slip the component board into the case and slide in as far  
as it will go. You will also have to release the tab at the rear  
on the other side of the case (turn case over) to allow the  
board to fit all the way inside the case.  
4. Go through steps 3 thru 5 in Section 3.3 in order to  
re-install the backplate and screws, and also install the lens.  
19  
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SECTION 4 OPERATION AND CALIBRATION  
Important: These changes must be performed by a  
qualified technician.  
WARNING: Do not connect ac power to your meter until  
you have completed all input and output connections.  
Failure to do so may result in injury!  
1. Wire the meter according to the wiring section. This  
includes power, thermocouple and analog signal  
connections.  
2. Apply power to the meter and the display will show the  
temperature of the probe.  
The meter is shipped from the factory calibrated to the accuracy  
as specified. No re-calibration is necessary. In the event that  
there is a desire to check the calibration, the following procedure  
is given.  
4.1 EQUIPMENT REQUIRED  
¥ Meter  
¥ a small screwdriver  
¥ a precision resistance source in 0.01¡  
resolution or ÒDecade Box".  
20  
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4.2 CALIBRATION PROCEDURE  
1. Remove the front lens. Connect power to the meter,  
observing proper wiring procedures.  
2. Connect the precision resistance source to the P3  
connector observing proper wiring configuration.  
For 3Ðwire connections, use pins 1, 2, 3, and 4. Refer  
to Figures 4-1 through 4-3.  
3. Apply resistance input as indicated in Table 4-1.  
4. Adjust either the ZERO or SPAN potentiometer as  
shown in Figure 4-4.  
5. After adjusting the post, go back and verify both  
temperature readings. Repeat step 4 as required.  
Note  
Refer to Table 3-1 and Table 3-2 for internal jumper  
settings.  
P3  
RED  
4
3
2
1
+ Excitation  
Signal Hi  
Signal Lo  
- Excitation  
PRECISION  
RESISTANCE  
SOURCE  
RED  
BLACK  
BLACK  
JUMPER WIRE  
(24 AWG)  
Figure 4-1. 2-Wire Configuration  
P3  
NOT USED  
4
3
2
1
+ Excitation  
Signal Hi  
Signal Lo  
- Excitation  
PRECISION  
RESISTANCE  
SOURCE  
RED  
RED  
BLACK  
BLACK  
BLACK  
Figure 4-2. 3-Wire Configuration  
21  
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P3  
RED  
RED  
BLACK  
BLACK  
+ Excitation  
Signal Hi  
Signal Lo  
- Excitation  
4
3
2
1
PRECISION  
RESISTANCE  
SOURCE  
RED  
BLACK  
Figure 4-3. 4-Wire Configuration  
TABLE 4-1  
CALIBRATION VALUES WHEN YOU ARE USING  
RESISTANCE SOURCE  
MODEL RESISTANCE  
OPTION READING  
METER  
DISPLAY  
POT TO  
ADJUST  
*-MF1  
*-MF2  
*-MC1  
*-MC2  
93.01  
00¡F  
ZERO  
SPAN  
375.51  
1472¡F  
93.01  
134.70  
00.0¡F  
194.0¡F  
ZERO  
SPAN  
100  
375.51  
00¡C  
800¡C  
ZERO  
SPAN  
100.0¡C  
174.0¡C  
00¡C  
195.0¡C  
ZERO  
SPAN  
* Refer to Table 1-1, for complete models (preface section).  
ZERO  
SPAN  
Figure 4-4. Calibration Potentiometers  
22  
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SECTION 5 SPECIFICATIONS  
INPUT TYPE:  
RTD:....................................................100-ohm platinum with alpha of 0.00385  
Calibration:.............................................................................IEC 751 (IPTS-68)  
Configuration:...................................................2-, 3-, or 4-wire RTD connection  
Polarity: ....................................................................................................Bipolar  
Zero: ...........................................................................Adjustable ±20¡C (±36¡F)  
Zero Tempco :...................................................................±0/05 degree/degree  
Sensor-wire Resistance Tempco  Effect per Conductor:  
2-wire: ...........................................................20 mdeg/½/degree, up to 3.8 ½  
3-wire: ............................................................50µdeg/½/degree, up to 100 ½  
4-wire: ...........................................................5.0µdeg/½/degree, up to 100 ½  
Sensor-excitation Current: .......................................................................0.5 mA  
Sensor-break Indication:.............................................Meter displays overrange  
(three least significant digits blank)  
Overvoltage Protection: .............................................................................25 Vp  
NOISE REJECTION  
NMR , SIG HI to SIG LO:.........................................................70 dB, 50/60 Hz  
CMR , Analog RTN to PWR GND:....................................120 dB, DC to 60 Hz  
CMV , Analog RTN to PWR GND:........................Dielectric strength to 1500 V  
transient per 260 Volt rms or DC working voltage.  
ACCURACY at 25¡C  
Range for rated accuracy:  
MC1/MF1:...................................................-200¡ to +850¡C (-328¡ to +1562¡F)  
Maximum Error: ......................................................±1.5¡C (±2.7¡F) ±1 count  
MC2/MF2:.........................................-199.9¡ to +199.9¡C (-199.9¡ to +199.9¡F)  
Maximum Error: ......................................................±0.5¡C (±0.5¡F) ±1 count  
Resolution: ....................................0.1¡C, 0.1¡F, 1¡C or 1¡F (jumper-selectable)  
Span Tempco : .................................................................±0.02% of reading/¡C  
Full-Scale Step Response:.................................................................. 1 second  
Warmup to Rated Accuracy:............................................................. 30 minutes  
ANALOG OUTPUT (linearized)  
Voltage: ..............................................................................................1mV/count  
Calibration Error:  
MC1/MF1:............................ ±1% of reading ± 1.5 mV on ¡C, ±2.7mV on ¡F  
MC2/MF2: .............................................................. ±1% of reading ± 0.5 mV  
Source Resistance: ...................................................................................100 ½  
ANALOG TO DIGITAL CONVERSION  
Technique: .................................................................Dual-slope, average value  
Signal Integration Period:........................................................................100 ms  
Read Rate: ..................................................................................................2.5/s  
23  
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DISPLAY  
Type:..........................................................................................7-segment, LED  
Height: .......................................................................................0.56" (14.2 mm)  
Symbols:..................................................................................................-1.8.8.8  
Overrange Indication:....................................Three least-significant digits blank  
Colors: .........................................................................................Red - standard  
Green - optional  
DIGITAL INPUTS  
Hold:......................................................................TTL or 5V CMOS compatible  
ENVIRONMENTAL  
Operating Temperature: ...............................................0¡ to 60¡C(32¡ to 140¡F)  
Storage Temperature:.............................................-40¡ to 85¡C (-40¡ to 185¡F)  
Relative Humidity:..............................................95% at 40¡C (non-condensing)  
MECHANICAL DIMENSIONS  
Bezel:.................................................................... 01.89Ó x 3.78" (48 x 96 mm)  
Depth Behind the Bezel:.................................... 4.32" (110 mm) w/ connectors  
Panel Cutout: ................................. 1/8 DIN: 01.72" H x 3.62" W (45 x 92 mm)  
Weight:............................................................................ 8 ounces (227 grams)  
Panel Thickness ........................................................minimum: 0.03" (0.76mm)  
maximum: 0.25" (6.25mm)  
Case Material: ......................................................94V-1 UL-rated thermoplastic  
POWER  
AC Frequency:......................................................................................50/60 Hz  
Max. Power: .................................................................................2.4 watts max.  
AC Voltage: ................................................................115Vac ±15% 25mA max.  
230Vac ±15% 14mA max.  
100Vac ±15% 30mA max.  
24Vac ±15% 127mA max.  
DC Voltage:..........................................................................9-26 Vdc @ 110mA  
External Fuse Protection needed:...................................32mA, 115Vac/230Vac  
UL Slow-blow (per single unit)  
40mA, 100Vac  
160mA, 24Vac  
125mA, 9-26Vdc  
Installation Category: .................................................................. I per EN61010  
Equipment Class:.........................................................................I per EN61010  
Pollution Degree: ........................................................................2 per EN61010  
  Refer to the Glossary in Section 6.  
24  
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1.89  
[48.0]  
3.78  
[96.0]  
BEZEL  
0.76 [19.3]  
BACKPLATE  
3.76  
[95.5]  
CASE  
4.32  
[109.7]  
MAX  
SIDE VIEW  
TOP VIEW  
PANEL THICKNESS  
0.25 [6.4] MAX  
0.03 [0.8] MIN  
PANEL CUTOUT  
0.06  
[1.5]  
4PLCS  
R
1.772 +0.024/-.000  
[45.01 +0.61/-0.00]  
3.622 +0.032/-.000  
[92.00 +0.81/-0.00]  
1/8 DIN  
Figure 5-1 Dimensions  
25  
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SECTION 6 GLOSSARY  
COMMON MODE REJECTION (CMR) - a measure of the affect  
of a voltage on the indicated display. It is the ratio of the common  
mode voltage to the measured voltage due to a common mode  
voltage.  
COMMON MODE VOLTAGE (CMV) - the average of the voltage  
applied to both wires of a two wire or differential input.  
NORMAL MODE REJECTION (NMR) - a measure of the  
rejection of unwanted signal due to a voltage applied between  
the wires of a two wire or differential input (shown as normal  
mode voltage). NMR is the ratio of the normal mode voltage to  
the measured voltage due to the normal mode voltage.  
TEMPCO - abbreviation for temperature coefficient. It is the  
effect of changes in ambient temperature on a particular  
parameter, such as zero or span settings.  
26  
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NOTES  
27  
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MADE  
IN  
USA  
WARRANTY/DISCLAIMER  
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a  
period of 13 months from date of purchase. OMEGA Warranty adds an additional one (1) month grace  
period to the normal one (1) year product warranty to cover handling and shipping time. This  
ensures that OMEGAs customers receive maximum coverage on each product.  
If the unit should malfunction, it must be returned to the factory for evaluation. OMEGAs Customer  
Service Department will issue an Authorized Return (AR) number immediately upon phone or written  
request. Upon examination by OMEGA, if the unit is found to be defective it will be repaired or replaced  
at no charge. OMEGAs WARRANTY does not apply to defects resulting from any action of the purchaser,  
including but not limited to mishandling, improper interfacing, operation outside of design limits,  
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of  
having been tampered with or shows evidence of being damaged as a result of excessive corrosion; or  
current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating  
conditions outside of OMEGAs control. Components which wear are not warranted, including but not  
limited to contact points, fuses, and triacs.  
OMEGA is pleased to offer suggestions on the use of its various products. However,  
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any  
damages that result from the use of its products in accordance with information provided by  
OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it will be  
as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR  
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF  
TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY  
AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF  
LIABILITY: The remedies of purchaser set forth herein are exclusive and the total liability of  
OMEGA with respect to this order, whether based on contract, warranty, negligence,  
indemnification, strict liability or otherwise, shall not exceed the purchase price of the  
component upon which liability is based. In no event shall OMEGA be liable for  
consequential, incidental or special damages.  
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a Basic  
Component under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical  
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or  
activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility  
as set forth in our basic WARRANTY/DISCLAIMER language, and additionally, purchaser will indemnify  
OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the  
Product(s) in such a manner.  
RETURN REQUESTS / INQUIRIES  
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE  
RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN  
(AR) NUMBER FROM OMEGA S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID  
PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return  
package and on any correspondence.  
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent  
breakage in transit.  
FOR WARRANTY RETURNS, please have the  
following information available BEFORE  
contacting OMEGA:  
FOR NON-WARRANTY REPAIRS, consult OMEGA  
for current repair charges. Have the following  
information available BEFORE contacting OMEGA:  
1. P.O. number under which the product was  
PURCHASED,  
1. P.O. number to cover the COST  
of the repair,  
2. Model and serial number of the product under  
warranty, and  
3. Repair instructions and/or specific problems  
relative to the product.  
2. Model and serial number of product, and  
3. Repair instructions and/or specific problems  
relative to the product.  
OMEGAs policy is to make running changes, not model changes, whenever an improvement is possible. This affords our  
customers the latest in technology and engineering.  
OMEGA is a registered trademark of OMEGA ENGINEERING, INC.  
' Copyright 1998 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,  
reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without prior  
written consent of OMEGA ENGINEERING, INC.  
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Where Do I Find Everything I Need for  
Process Measurement and Control?  
OMEGAÉOf Course!  
TEMPERATURE  
ߜ
 
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Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies  
Wire: Thermocouple, RTD & Thermistor  
Calibrators & Ice Point References  
Recorders, Controllers & Process Monitors  
Infrared Pyrometers  
PRESSURE, STRAIN AND FORCE  
ߜ
 
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Transducers & Strain Gauges  
Load Cells & Pressure Gauges  
Displacement Transducers  
Instrumentation & Accessories  
FLOW/LEVEL  
ߜ
 
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Rotameters, Gas Mass Flowmeters & Flow Computers  
Air Velocity Indicators  
Turbine/Paddlewheel Systems  
Totalizers & Batch Controllers  
pH/CONDUCTIVITY  
ߜ
 
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pH Electrodes, Testers & Accessories  
Benchtop/Laboratory Meters  
Controllers, Calibrators, Simulators & Pumps  
Industrial pH & Conductivity Equipment  
DATA ACQUISITION  
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Data Acquisition & Engineering Software  
Communications-Based Acquisition Systems  
Plug-in Cards for Apple, IBM & Compatibles  
Datalogging Systems  
Recorders, Printers & Plotters  
HEATERS  
ߜ
 
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Heating Cable  
Cartridge & Strip Heaters  
Immersion & Band Heaters  
Flexible Heaters  
Laboratory Heaters  
ENVIRONMENTAL  
MONITORING AND CONTROL  
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Refractometers  
Pumps & Tubing  
Air, Soil & Water Monitors  
Industrial Water & Wastewater Treatment  
pH, Conductivity & Dissolved Oxygen Instruments  
11434ML-98 Rev. A  
M1488/1298  
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