450 - Omega Engineering
Contents
1. ss Use Urs Guide OMEGA 450 AET THERMOCOUPLE THERMOMETER TYPEE Shop online at omega com CEOMEGA www omega com e mail info omega com 450 SERIES Digital Thermometers omega com CEOMEGA OMEGAnet On Line Service Internet e mail www omega com info omega com USA ISO 9001 Certified Canada Servicing North America One Omega Drive Box 4047 Stamford CT 06907 0047 Tel 203 359 1660 FAX 203 359 7700 e mail info omega com 976 Bergar Laval Quebec H7L 5A1 Canada Tel 514 856 6928 FAX 514 856 6886 e mail info omega ca For immediate technical or application assistance USA and Canada Mexico Sales Service 1 800 826 6342 1 800 TC OMEGA Customer Service 1 800 622 2378 1 800 622 BEST Engineering Service 1 800 872 9436 1 800 USA WHEN TELEX 996404 EASYLINK 62968934 CABLE OMEGA En Espanol 001 203 359 7803 FAX 001 203 359 780 e mail espanol omega com info omega com mx Servicing Europe Benelux Germany Austria Postbus 8034 1180 LA Amstelveen Daimlerstrasse 26 D 75392 The Netherlands Deckenpfronn Germany Tel 31 0 20 3472121 FAX 31 0 20 6434643 Tel 49 0 7056 9398 0 Toll Free in Benelux 0800 0993344 FAX 49 0 7056 9398 29 e mail sales amp omegaeng nl Toll Free in Germany 0800 639 7678 Czech Republic e mail info omega d2. 3 1 4 Specification 4 Section 2 Operation 2 1 Principles of Operation 7 22 A ire ti 8 2 3 Operation eres 10 2 4 Maintenance 13 Section 3 Calibration 3 1 Calibration 14 Section 1 Description 1 1 General Description Your hand held battery operated digital temperature indicator is configured for compatibility with one of five temperature transducers J K E T RTD and Thermister Each of the configurations linearizes the analog output from the transducer to produce a stable and accurate digital temperature display Plug in type input connectors are used for the transducer input to provide quick connect and disconnect capability The indicator functions are controlled by the key board The liquid crystal display exhibits the value of the measurement degrees Fahrenheit or Celsius and the low battery voltage indication The use of advanced digital design techniques give the indicator extremely accurate readings and exceptionally long battery life 2 1 2 Physical Description The indicator measures 45 mm 1 8 inches in Height 85 mm 3 3 inches in width and 145 mm 5 7 inches in length Weight is 230 grams 8 0 ounces The case is constructed of high impact plastic 1 3 Unpacking The indicator is supplied with the battery installed A quick electrical test should be performed to verify that the indicator
3. 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 Where Do I Find Everything Need for Process Measurement and Control OMEGA Of Course hop online at www omega com TEMPERATURE Izd Thermocouple RTD amp Thermistor Probes Connectors Panels amp Assemblies Wire Thermocouple RTD amp Thermistor 7 Calibrators amp Ice Point References 4 Recorders Controllers amp Process Monitors A Infrared Pyrometers PRESSURE STRAIN AND FORCE A Transducers amp Strain Gages A Load Cells amp Pressure Gages Displacement Transducers A Instrumentation amp Accessories FLOW LEVEL 4 Rotameters Gas Mass Flowmeters amp Flow Computers A Air Velocity Indicators A Turbine Paddlewheel Systems A Totalizers amp Batch Controllers pH CONDUCTIVITY A pH Electrodes Testers amp Accessories Izd Benchtop Laboratory Meters Controllers Calibrators Simulators amp Pumps W Industrial pH amp Conduct
4. been tampered with or shows evidence of having been damaged as a result of excessive corrosion or current heat moisture or vibration improper specification misapplication misuse or other operating conditions outside of OMEGASs 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 liabi 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 EXPRESS 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
5. is operative See 2 3 in Section 2 for operating instructions Contact our Instrument Repair Department immediately if any problems are observed after checking out operation of the unit Specifications Display Liquid crystal display 7 6 mm 0 3 in digit Height Operating temperature 0 to 50 C 32 to 122 F 0 to 75 Relative Humidity Storage Temperature 20 to 70 C 4 to 158 F Battery NEDA 1604 9 Volt Battery Life Thermocouple 2000 hours minimum Platinum RTD 500 hours minimum Thermistor 1200 hours minimum NMRR 50 dB 50 1 Hz 0 1 range 35 dB 50 1 Hz or 60 1Hz 1 range CMRR 140 dB 50 1 Hz 0 1 range 120 dB 50 1 Hz or 60 1Hz 1 range Maximum Common Mode Voltage 1000VAC RMS 2000V Peak Accuracy at 22 C 72 F 1 range 0 8 C 0 1 rdg 1 5 F 0 1 rdg 0 1 range 0 25 C 0 1 rdg 45 Ft0 1 rdg Stability with time 90 days add 0 05 rdg 1 year add 0 1 rdg Stability with temperature Thermocouple zero 0 03 C C span 0 02 rdg C max reference junction tracking 1 0 C 1 8 F from 5 C to 45 C 41 F to 113 F Platinum RTD 0 02 C 0 01 rdg C Thermistor positive 0 02 C C negative 0 04 C C 5 450 Range Table Type 189C to 1372C 308 F to 2501 F 139 8 C to 203 7 C 219 7 F to 398 7 F Type 194 C to 1200 C 318 F to 2192 F 117 4 C to 203 5 C 179 4 F to 398 7 F Type 212 C to 1000 C
6. operation To replace the battery follow these steps Note The indicator must be OFF when Replacing the battery Step 1 Place the indicator face down on a flat surface and remove the four screws located in 8 the recesses or each corner of the case bottom Step 2 Carefully pull the case halves straight apart so as not to damage the internal connectors Step 3 Install the new battery Close the case and reinstall the four screws 2 3 Operation Step 1 Insert temperature sensor plug into the indicator input jack Failure to insert a probe results in a overload condition of three columns of dashes showing on the display Step 2 Turn the indicator ON by pressing the F or C key The display can be switched to read the temperature in degrees Celsius or Fahrenheit without affecting calibration Step 3 Select the display range of 1 wide range low resolution or 0 1 narrow range high resolution with the 1 0 1 key Note The thermistor unit has a fixed resolution of 0 1 Step 4 By pressing and holding the HOLD key The last reading will be displayed as long as the hold key is depressed After the hold key is released the indicator will revert to its normal display mode 10 Step 5 Observe and or record the temperature value Step 6 Turn instrument off by pressing the OFF key 11 Probe Display F C Input Jack Value Indication Low Battery Voltage Indication To Hold Displa
7. 351 F to 1832 F 137 2 C to 203 5 C 215 0 F to 398 4 F Type T 217 C to 400 C 360 F to 752 F 148 2 C to 203 9 C 234 8 F to 399 0 F RTD 233 C to 904 C 388 F to 1660 F 102 9 C to 203 5 C 153 2 F to 398 3 F Thermister 25 7 C to 103 2 C 14 4 F to 217 8 F Section 2 Operation 2 1 Principles of Operation The temperature indicator uses two ICs to digitize and display the analog input signal One IC performs the conversion of the analog input to the digital equivalent via 24 bit delta sigma analog to digital converter Battery voltage is also monitored by this IC and a thermistor supplies the reference junction correction signal The other IC receives input from the analog to digital converter linearizes and drives the LCD display Front panel buttons are also monitored 2 2 Power When battery voltage reaches about 6 volts the display will exhibit a flashing LOW BAT indication A minimum of 20 hours of operation time remains upon initial appearance of the LOW BAT indication When the battery voltage drops below 5 volts an overload indications of three columns of dashes will appear on the display in addition to the flashing LOW BAT symbol The indicator uses a NEDA 1604 or eguivalent 9 Volt battery The battery will provide a minimum of 2000 hours of continuous thermocouple operation 500 hours of RTD operation or 1200 hours of thermistor
8. ber 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 FOR NON WARRANTY REPAIRS consult have the following information OMEGA for current repair charges Have the available BEFORE contacting OMEGA following information available BEFORE con 1 Purchase Order number under which tacting OMEGA the product was PURCHASED 1 Purchase Order number to cover the COST 2 Model and serial number of the of the repair product under warranty and 2 Model and serial number of the product and 3 Repair instructions and or specific 3 Repair instructions and or specific problems problems relative to the product relative to the product OMEGAS policy is to make running changes not model changes whenever an improve ment is possible This affords our customers the latest in technology and engineering OMEGA is a registered trademark of OMEGA ENGINEERING INC Copyright 2003 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 the prior written consent of OMEGA ENGINEERING INC Section 1 Description 1 1 General Description 2 1 2 Physical Description 3 1 3 Unpacking
9. cedure again Step 6 Verify calibration once finished 17 Ra Rb o GND Ref J IN 1 23V 3 7V 0000000000 ROLO TAN NA Ra Full Scale Adj Rb Zero Adj Rc Full Scale Adj 18 Rc Calibration Thermocouple Type K J and T and E Equipment List e 4 digit voltmeter e Voltage Calibrator Resolution 1uV accuracy 0 01 2uV e Ice Bath 0 00 C 0 05 C e Jumper lead terminated in mini clips For optimum results the calibration should be performed with an ambient temperature from 20 24 C 68 to 75 F Refer to the figure on the previous page for the locations of all testpoints and adjustments a Turn the indicator ON by pressing the C key b For types K J E and T units only switch the indicator to the 0 1 range 19 29 Remove the bottom case of the indicator Adjust the voltage calibrator for an output of 0 000mV and connect the minus lead from the calibrator to GND and the positive lead from the calibrator to IN on the indicator printed circuit board Disable the reference junction by jumpering together the REF J and GND testpoints using a jumper lead terminated in mini clips Adjust Rb for an indicator display of 0 0 C Connect the DVM LO lead to GND on the indicator printe
10. d circuit board Using HI lead of DVM measure voltage at the 1 23V testpoint disregarding polarity indication record the voltage Move the DVM HI lead to the 3 7V testpoint and record the voltage disregard 20 polrity The voltage measured at the 3 7V test point should be 3 007 times larger than the voltage measured at the 1 23V test point Adjust Rc which varies the 3 7V line to attain the proper ratio Switch the indicator to the 1 range Adjust the voltage calibrator for an output of 53 782mV for type K 57 942mV for type y 75 983mV for type E 18 824mV for type T Adjust Ra for an indicator display of 995 C for type E or 1000 C for type J or 1340 C for type K or 367 C for type T Reassemble the indicator Perform the zero calibration 21 Calibration Thermistor Type Eguipment List 412 digit voltmeter Precision decade box Resolution 0 01 ohm accuracy 0 02 Ice Bath 0 00 C 0 05 C Electro Scientific Industries DB 62 or equivalent Turn the indicator ON by pressing the C key Remove the bottom case of the indicator Connect a precision resistance box to the terminals on the phone input jack set the resistance box to 7 280 ohms Connect the DVM LO lead to GND on the indicator printed circuit board Using HI lead of DVM measure voltage 22 at the 1 23V testpoint disregarding polarity indication record the voltage M
11. ivity Equipment DATA ACQUISITION A Data Acquisition amp Engineering Software 4 Communications Based Acquisition Systems Plug in Cards for Apple IBM amp Compatibles Y Datalogging Systems A Recorders Printers amp Plotters HEATERS Y Heating Cable 4 Cartridge amp Strip Heaters EF Immersion amp Band Heaters Flexible Heaters Y Laboratory Heaters ENVIRONMENTAL MONITORING AND CONTROL 14 Metering amp Control Instrumentation EF Refractometers 4 Pumps amp Tubing 4 Air Soil amp Water Monitors A Industrial Water amp Wastewater Treatment Izd pH Conductivity amp Dissolved Oxygen Instruments M0099 0603
12. l Frystatska 184 733 01 Karvin Czech Republic United Kingdom ISO 9002 Certified Tel 420 0 59 6311899 FAX 420 0 59 6311114 One Omega Drive Toll Free 0800 1 66342 River Bend Technology Centre e mail info omegashop cz Northbank Irlam Manchester France M44 5BD United Kingdom 11 rue Jacques Cartier Tel 44 0 161 777 6611 78280 Guyancourt France FAX 44 0 161 777 6622 Tel 33 0 1 61 37 2900 FAX 33 0 1 30575427 Toll Free in United Kingdom 0800 488 488 Toll Free in France 0800 466 342 e mail sales omega co uk e mail sales omega fr It is the policy of OMEGA to comply with all worldwide safety and EMC EMI regulations that apply OMEGA is constantly pursuing certification of its products to the European New Approach Directives OMEGA will add the CE mark to every appropriate device upon certification The information contained in this document is believed to be correct but OMEGA Engineering Inc accepts no liability for any errors it contains and reserves the right to alter specifications without notice WARNING These products are not designed for use in and should not be used for human applications 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 num
13. on the back of the case labeled Zero Remove the black button Using a small screw drive or flat end of the trimmer pot press the cal switch once The display should read version and then switch to ambient temperature press the switch one more time The display should indicate 0 0 C Step 3 Press the switch one more time the display should read max calibration temperature for K type 13 2 0 for J type 9 6 0 for T type 3 5 0 and for E type 9 5 0 Now set the simulator output to display temperature as show in table below 15 NOTE If you want to cancel the calibration mode press OFF button in front of the unit For T C type K set simulator 1320 C J set simulator 960 C T set simulator 350 C E set simulator 950 C Press the switch one more time and wait for a few seconds until display switches to 0 0 set simulator to 0 C Press switch one more time Unit should shut off Step 4 Now turn the unit on from front panel Make sure the unit in degree C mode Verify that the unit is within specification throughout its range Step 5 If unit does not meet specification as 0 C then repeat calibration procedure Instead of setting simulator as 0 C set it at the temperature indicated by the unit in measurement mode as 0 C For example in measure mode unit may display 2 C with simulator as 0 C During 16 calibration procedure set simulator at 2 C instead of 0 C Repeat the calibration pro
14. ove the DVM HI lead to the 3 7V testpoint and record the voltage disregard polarity The voltage measured at the 3 7V test point should be 3 007 times larger than the voltage measured at the 1 23V test point Adjust Rc which varies the 3 7V line to attain the proper ratio Adjust Rb for an indicator display of 0 2 C Set the resistance box to 148 4 ohms Adjust Ra for an indicator display of 101 0 C Reassemble the indicator Perform the zero calibration 23 Calibration Platinum RTD Eguipment List 412 digit voltmeter Precision decade box Resolution 0 01 ohm accuracy 0 02 Ice Bath 0 00 C 0 05 C Electro Scientific Industries DB 62 or equivalent Turn the indicator ON by pressing the C key Remove the bottom case of the indicator Connect a precision resistance box to the terminals on the RTD input jack and set the resistance box to 100 04 ohms Using HI lead of DVM measure voltage at the 1 23V testpoint disregarding polarity indication record the voltage 24 h Move the DVM HI lead to the 3 7V testpoint and record the voltage disregard polrity The voltage measured at the 3 7V test point should be 3 007 times larger than the voltage measured at the 1 23V test point Adjust Rc which varies the 3 7V line to attain the proper ratio Adjust Rb for an indicator display of 32 2 F Adjust Ra for an indicator display of 196 0 C Reas
15. semble the indicator Perform the zero calibration 25 Zero Calibration a Turn the indicator on by pressing the C key b Set the indicator to the 0 1 range c Connect the ice bath probe to the indicator Input jack d Place the probe in a stable ice bath 0 00C 0 05 C and adjust the ZERO pot Rb located beneath the plug on the rear case for an indicator display of 0 0 C e Replace the rubber plug Calibration is complete 26 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 s 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 malfunctions it must be returned to the factory for evaluation OMEGA s Customer Service Department will issue an Authorized Return AR number immediate ly 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 is VOID if the unit shows evidence of having
16. y Press and hold key to retain last reading on the display Press this key to turn OFF Range Selector Press C or F keys to turn ON and or temperature scale O peration Features 12 2 4 Maintenance Normal maintenance of the indicator consists of occasional cleaning with a soft damp cloth replacement of the battery as reguired and calibration as outlined in Section 3 13 Section 3 Calibration 3 1 Calibration Units with serial numbers beginning with the letter N use the calibration procedure outlined below Older units do not display version numbers and use the calibration procedures on page 19 The calibration procedure should be performed by a qualified instrumentation service technician The indicator may be brought to any instrumentation calibration and repair laboratory metrology lab for the service this manual should accompany the instrument This procedure should be done at least once a year to guarantee continued performance within the specification The instrument should be calibrated at an ambient temperature of 22 C with a thermocouple simulator 14 with a minimum accuracy of 0 1 degree Fahrenheit or 0 2 degree Centigrade Step 1 Ensure the unit is turned off Connect the output of the thermocouple simulator to the input of the indicator using the appropriate thermocouple wire Set the simulator output to 0 C Step 2 Locate the calibration switch
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