Omega Engineering Thermometer HH504 User Manual

OMEGA  
HH504  
Digital Thermometer  
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INTRODUCTION  
This instrument is a 4½ digit, compact-sized portable digital thermometer  
designed to use external 100W Platinum RTD as temperature sensor. Tem-  
peratureindicationfollowsReferenceTemperature/ResistanceTables(Pt385  
for European Curve, Alpha=.00385 and Pt3926 for American Curve, Al-  
pha=.003926).  
SAFETY INFORMATION  
Itisrecommendedthatyoureadthesafetyandoperationinstructionsbefore  
using the thermometer.  
WARNING  
To avoid electrical shock, do not use this instrument when working  
voltages at the measurement surface over 24V AC or DC.  
WARNING  
To avoid damage or burns, do not make temperature measurement in  
microwave ovens.  
The symbol on the instrument indicates that the operator must refer to  
an explanation in this manual.  
1
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SPECIFICATIONS  
ELECTRICAL  
Temperature Scale: Celsius or Fahrenheit user-selectable.  
Measurement Range:  
Pt385(100W ) -200°C to 800°C, (-328°F to 1472°F)  
Pt3926(100W ) -200°C to 630°C, (-328°F to 1166°F)  
Resolution: 0.1°C or 0.2°F  
Accuracy: Accuracy is specified for operating temperatures over the range of  
18°C to 28°C (64°F to 82°F), for 1 year, not including RTD probe error.  
±(0.05% rdg + 0.2°C) on °C scale  
±(0.05% rdg + 0.4°F) on °F scale  
Temperature Coefficient: 0.1 times the applicable accuracy specification  
per °C from 0°C to 18°C and 28°C to 50°C (32°F to 64°F and 82°F to 122°F).  
Input Protection: 24V dc or 24V ac rms maximum input voltage on any  
combination of input pins.  
Maximum Differential Common Mode Voltage (Maximum Voltage be-  
tween T1 and T2 during measurement): 1volt.  
Reading Rate: one time per second.  
Input Connector: MTP miniature RTD 3 prong connector.  
2
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ENVIRONMENTAL  
Ambient Operating Ranges: 0°C to 50°C (32°F to 122°F) <80% R.H.  
Storage Temperature: -20°C to 60°C (-4°F to 140°F) <70% R.H.  
GENERAL  
Display:4½ digit liquid crystal display (LCD) with maximum reading of 19999.  
Overload: "----.-" is display.  
Battery: Standard 9V battery.  
Battery Life: 100 hours typical.  
Auto power off: The meter key switch inactive for more than 30 minutes,  
press power key to resume operation.  
Dimensions: 192mm(H) x 91mm(W) x 52.5mm(D).  
Weight: 365g.  
3
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OPERATING INSTRUCTIONS  
1
2
Power Switch  
The key turns the thermometer on or off. In the data SET mode, can not  
power off, must leave data SET mode then power off.  
°C/°F Selecting the Temperature Scale (Main display)  
Reading the main displayed in either degrees Celsius(°C) or degrees  
Fahrenheit(°F). When the thermometer is turned on, it is set to the  
temperature scale that was in use when the thermometer was last turned  
off. To change the temperature scale, press the °C/°F key.  
3
HOLD Mode (only Main display)  
Pressing the HOLD key to enter the Data Hold mode, the "HOLD" annun-  
ciator is displayed. When HOLD mode is selected, the thermometer held  
the present readings and stops all further measurements.  
Pressing the HOLD key again to cancel HOLD mode causing thermometer  
to resume taking measurements.  
In the MIN/MAX recording mode, press HOLD key to stop the recording.  
Press HOLD key again to resume recording. (Previously recorded reading  
are not erased).  
4
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4
T1/ T2/T1-T2 Main display Input Selection  
The input selection indicates which input is selected for main display; T1  
probe,T2probeorthedifferencebetweenthetwoprobes(T1-T2),whenthe  
thermometer is turned on, it is set to T1.  
When main display input selected T1, then T1 input can select alternate of  
probe by pressing Pt385/Pt3926 key switch.  
5
6
Pt385/Pt3926 T1 Input RTD Probe Select (Main display)  
The Pt385/Pt3926 key switch the T1 input selects the Pt385 or Pt3926 RTD  
probe as input, when main display input selected T1.  
When the thermometer is turned on, it is set to the probe selected that was  
in use when the thermometer was last turned off.  
MIN MAX with Time record Mode (only Main display)  
Press MIN MAX key to enter the MIN MAX Recording mode, (displays the  
Maximum reading with time, Minimum reading with time and Average  
reading stored in record mode). In the this mode the automatic power-off  
feature is disabled and  
key, °C/°F key, REL key, SET key, Hi/Lo Limits  
key and main display T1 T2 T1-T2 key, Pt385/Pt3926 key are disabled.  
The beeper emits a tone when a new minimum or maximum value is  
recorded.  
Push MIN MAX key to cycle through the MAX, MIN and AVG readings.  
If an overload is recorded, the averaging function is stopped and average  
value display"----.-".  
5
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The true average of all the reading taken over at least 22 hours preiod can  
be displayed. If 22 hours is exceeded, new averages are no longer  
calculated. Thelastcalcalatedvalueisretainedastheaveragereading, but  
the actual minimum and maximum reading will continue to be captured.  
In the this mode, press HOLD key to stop the recording of readings, all  
values are frozen, press again to restart recording.  
TopreventaccidentallossofMIN,MAXandAVGdata,inthismodecanonly  
be cancelled by pressing and hold down the MIN MAX key for 2 seconds to  
exit and erased recorded readings.  
7 REL Relative mode (only Main display)  
Pressing REL key to enter the Relative mode, zero the display, and store  
the displayed Reading as a reference value and annunciator REL is  
displayed. Press REL key again to exit the relative mode.  
The relative value can also be entered by the user. (See "SET mode" later  
in this manual.)  
When the desired Relative value has been entered, press REL key to enter  
the Relative mode, press SET key use set Relative value as a reference  
value. Press REL key again to exit the relative mode.  
In the Relative mode, the value (can not >±3000.0 counts) shown on the  
LCD is always the difference between the stored reference and the present  
reading.  
6
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8
9
°C/°F Selecting the Temperature Scale (Second display)  
Readings the second displayed in either degrees Celsius(°C) or degrees  
Fahrenheit(°F). When the thermometer is turned on, it is set to the temperature  
scale that was in use when the thermometer was last turned off. To change the  
temperature scale, press the °C/°F key.  
SET mode (Relative value set, Time set and Hi/Lo Limits value set)  
1. Press SET key to enter Relative valuse SET mode (Press ENTER key can  
escape relative valuse set mode), REL set mode. = = = =.= is displayed in  
main display.  
Relative value is entered via overlay numbers, then press overlay ENTER  
key, stored the relative value, enter Time set mode.  
2. Time set mode, (Press ENTER key can escape Time set mode)  
=.= = = : = = is displayed in second and third display. Time (hours, minutes,  
seconds) value is entered via overlay numbers, then press overlay ENTER  
key. Time start from set time value, enter Hi/Lo Limits value set mode.  
3. Hi Limit value set mode,  
is displayed (Press ENTER key can escape Hi  
Limit value set mode), = = = =.= is displayed in main display, Hi Limit value  
is entered via overlay numbers, then press overlay ENTER key, stored the  
HiLimitvalue,enterLoLimitvaluesetmode(Press ENTERkeycanescape  
Lo Limit value set mode). = = = =.= is displayed in main display, Lo Limit  
value is entered via overlay numbers, then press overlay ENTER key,  
stored the Lo Limit value and exit SET mode.  
7
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4. When the thermometer is turned on. The Relative set value and Hi/Lo Limits  
set value that was in use when thermometer was last turned off set values.  
10  
T1/T2 /T1-T2 second display Input Selection  
The input selection indicates which input is selected for second display; T1  
probe,T2probeorthedifferencebetweenthetwoprobes(T1-T2),whenthe  
thermometer is turn on, it is set to T2 input can select alternate of probe by  
second display Pt385/Pt3926 key switch.  
11 Pt385/Pt3926 Input RTD Prob select (second display)  
The Pt385/Pt3926 key switch the T2 input selects the Pt385 or Pt3926 RTD  
probe as input, when second display input selected T2.  
When the thermometer is turned on, it is set to the RTD selected that was  
in use when the thermometer was last turned off.  
12  
Hi/Lo Limits mode (only Main display)  
Press Hi/Lo LIMITS key to enter the Hi/Lo Limits comparative mode, when  
input temperature value exceed Hi or Lo Limits value. The beeper emits a  
continuitypulsetone. PressHi/LoLIMITSkeyagaintoexittheHi/LoLIMITS  
mode.  
8
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OPERATOR MAINTENANCE  
WARNING  
To avoid possible electrical shock, disconnect the thermocouple  
connectors from the rmometer before removing the cover.  
Battery Replacement  
Powerissuppliedbya9volt"transistor"battery. The" "appearsontheLCD  
display when replacement is needed. To replace the battery, remove the two  
screws from the back of the meter and lift off the battery cover. Remove the  
battery from battery contacts.  
RTD PROBE CONNECTION  
P/N : 17650-0505  
RW1  
+
G
+
-
RTD  
100W  
RW2  
RW3  
-
G
Pt385  
(Pt3926)  
RW1=RW2=RW3  
RW= WIRE RESISTANCE  
9
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TEMPERATURE VS RESISTANCE TABLE(ITS90)  
°C  
-200°C  
-100°C  
0°C  
Pt385  
18.521W  
Pt3926  
16.996W  
59.479W  
100.000W  
139.272W  
177.362W  
214.275W  
250.018W  
284.591W  
317.994W  
-
60.256W  
100.000W  
138.505W  
175.856W  
212.052W  
247.092W  
280.977W  
313.708W  
345.280W  
375.700W  
100°C  
200°C  
300°C  
400°C  
500°C  
600°C  
700°C  
800°C  
-
10  
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HH 504 / HH 505 CALIBRATION PROCEDURE  
Note: The following calibration procedure should perform only by qualified technicians  
who have access to the items as following.  
Equipment: The class of calibrator had better 10 times greater than the measured meter.  
1. Turn off the meter then set the adjusted jumper to J1.  
2. Insert the 383.00Ω calibrator to the T1 then turn on the meter, the main  
display reading reads 1830.0 then press " ENTER " key.  
3. The second display is stabilized (about 5sec.), then press " ENTER " key  
when the meter auto power off then set the jumper back to J3 position.  
4. Turn on the meter then Insert the 100.00Ω calibrator. The display reading  
reads 0°C if the calibration procedure is right.  
383.00ꢀꢁCALIBRATOR  
RW1  
RW2  
RW3  
+
RW1=RW2=RW3  
_
RW=WIRERESISTANCE  
G
+
_
383.00  
G
Pt385  
Pt3926  
-200℃  
-100℃  
0℃  
18.521Ω  
60.256Ω  
100.000Ω  
138.505Ω  
175.856Ω  
212.052Ω  
247.092Ω  
280.977Ω  
313.708Ω  
345.280Ω  
375.700Ω  
16.996Ω  
59.479Ω  
100.000Ω  
139.272Ω  
177.362Ω  
214.275Ω  
250.018Ω  
284.591Ω  
317.994Ω  
100℃  
200℃  
300℃  
400℃  
500℃  
600℃  
700℃  
800℃  
1
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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 OMEGA's customers receive maximum coverage on each product.If  
the unit should malfunction, it must be returned to the factory for evaluation. OMEGA's 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. OMEGA's 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 isVOID 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 OMEGA's 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 OTHERWARRANTIES 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:  
1. P.O. number under which the product was PURCHASED.  
FOR NON-WARRANTY REPAIRS, consult OMEGA for  
current repair charges. Have the following information  
available BEFORE contacting OMEGA:  
2. Model and serial number of the product under warranty, and 1. P.O. number to cover the COST of the repair.  
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.  
OMEGA's 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 1999 OMEGA ENGINEERING,  
INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or  
machine-readable from, in whole or in part, without prior written consent of OMEGA ENGINEERING, INC.  
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Whe re Do I Find Eve rything I Ne e d for  
Proc e ss Me a sure m e nt a nd Control?  
OMEGA...Of Course !  
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