Manual - Test Equipment Depot
Contents
1. Rhodium Platinum Pt 10 Rh Pt T Copper Copper Nickel Cu Constantan Cu Ni E Nickel Chromium Copper Nickel Chromel Constantan Ni Cr Cu Ni Specifications T C Type Range Resolution Accuracy K 200 to 650 C 0 1 C 0 1 rdg 0 7 C 651 to 1370 C 1 0 C 328 to 1000 F 0 1 F 0 1 rdg 1 4 F 1001 to 2498 F 1 0 F J 200 to 500 C 0 1 C 0 1 rdg 0 7 C 501 to 760 C 1 0 C 328 to 940 F 0 1 C 0 196 rdg 1 4 F 941 to 1400 F 1 0 F T 200 to 390 C 0 1 C 0 1 rdg 0 7 C 328 to 730 F 0 1 F 0 1 rdg 1 4 F R S 0 to 1000 C 0 1 C 0 3 rdg 0 7 C 1001 to 1760 C 1 0 C 32 to 1000 F 0 1 di 0 1 rdg 1 4 F 1001 to 3200 F 1 0 F E 200 to 380 C 0 1 C 0 3 rdg 0 7 C 381 to 736 C 1 0 C 328 to 720 F 0 1 F 0 1 rdg 1 4 F 721 to 1832 F 1 0 F Additional Specifications OPERATING CONDITIONS 0 to 50 C 32 to 122 F at 0 to 85 relative humidity non condensing Ambient Coefficient 0 to 18 C and 28 to 50 C Ambient temperatures For each C ambient below 18 C or above 28 C add the following tolerance into the accuracy spec 0 01 of reading 0 03 C 0 01 of reading 0 06 F2. being turned on For recording or operating over longer periods of time you can disable the sleep mode by pressing and simultaneously while power on When n then appear in the center of the screen you can release the On Auto power off is disabled when you turn off the meter Change Thermocouple Type Press and CPR la for 2 or more seconds until K CEP appears Press the button the type of probe cycles through K the default J T R S and E types The current mode is displayed on the left side of the LCD press ED an S will appear in the center of the screen ERE 3 h Using the Pushbuttons The display defaults to the mode last used For your convenience the meter defaults to the settings used during the last operation Use the pushbuttons to control operation of the TMD90 The table assumes the TMD90 has been powered on with two thermocouples installed and is set to display defaul K thermocouple and Record off T1 ont he primary display type Button Description Turns the meter on and off 89 zero Relative and the uni Press and release HOL T1 T2 or T1 T2 freezes with HOLD displayed on top Press for two or more seconds REL appears on top of LCD and the REL Primary display indicates the relative he value of the pr then only the am be indicated Relative display to show as 000 0 emperature change wi emperatures can be recorded Press HO
3. LD returns to D REL an zero Causes default d the Primary display imary ount of REL again Press momen again and i and the ins T2 Secondary screen d he Prim isp arily and to del ary display changes to ays T1 press momentarily displays T1 T2 Secondary display alternates between T1 and T2 Press momen rument returns arily again ault Press momen approximately he ds backl hen arily and 30 secon ight illuminates for urns off Press momen Fahrenheit current mode the default arily and the unit is indicated o and Celsius temperai n the right side o oggles between ures The the LCD Press momen 8 0e 8 displayed on t continues to u unit cycles thr Min lower right screen All o out except Power and Backl imum recorded tem arily and the Relai her but ight he Primary screen ough MAX and M temperature function Press and hold for three second peratures he record mode is displayed on the LCD ive Clock starts in the on functions are locked T1 T2 or T1 T2 is The Secondary screen pdate Press momentarily again and the N Maximum and and back to current s to turn off the record RS 232 Outp With optional sof measurement res ut ware and cable P N TM SW the TMD90 can output ults to a computer with operating systems of Window 95 98 NT 2000 XP ME Features of th
4. TMD90 WAN a ce Meterman Dual Input Digital Thermometer User Manual Test Equipment Depot 1 800 517 8431 TMD90 Dual Input Thermometer Contents Safety Information Symbols Used in this Manual Introduction Display and Controls Functions Auto Power Off Sleep Mode Change Thermocouple Type Using the Pushbuttons RS 232 Output Troubleshooting Replacing the Battery Thermocouple Definitions Specifications Additional Specifications Safety Information e Place ONLY thermocouples in the thermocouple input Make sure your meter is configured for the thermocouple type to be used Be sure the thermocouple you use can withstand the temperature extreme it will be exposed to Properly maintain the meter and calibrate it regularly Use the thermometer only as specified in this manual or the protection provided by the thermometer might be impaired Replace the battery as soon as BAT appears to avoid false readings that can lead to electric shock and injury AAWarning Supplied thermocouple is not intended for contact with liquids or live electrical circuits Symbols Used in this Manual A Dangerous Voltage Refer to the manual IK gt s Double insulated Earth Ground CE Complies with EU directives Introduction The Model TMD90 dual input thermometer accepts Type K J T R S and Ethermocouples Wit
5. an REC Relative clock is active for recording min and max temperature occurences or for time stamp purposes MAX MIN Maximum or minimum temperature measurements are being monitored HOLD REL Freezes primary display or establishes a relative zero for the primary display information BAT Low battery indicator C F Displays temperature in either degrees Celsius or degrees Fahrenheit T1 T2 Toggles screen niformation from T1 Primary T 2 Secondary to T2 Primary T1 Secondary then to T 1 T 2 Differential on Primary and alternating T1 T2 temperatures on Secondary display Primary data display Displays T1 T2 or T1 T2 temperature differential TD or a relative zero of T1 T2 or TD KJTRSE Selects proper input reference for thermocouple in use T1 and T2 must be the same thermocouple type Secondary data display Displays T2 T1 or T1 and T2 temperatures Thermocouple input Positive and negative polarized plugs for the thermocouple probes used Blade type T1 on the left T2 on the right Relative clock display Displays time in hours minutes and seconds HHMMSS when REC is pressed and the relative time that MIN or MAX data was recorded RS 232 output port Optional software and cable PN TM SW AC to DC converter input ANCaution Read all Safety Information before using this thermometer Functions Auto Power Off Sleep Mode The TMD90 shuts off automatically approximately 20 minutes after
6. e software e o o o Record up to Programmab 16 000 sample readings with real time clock memory e sample interval from 1 sec to 3 600 sec User defined maximum and minimum alarm settings Allow further analysis by downloading data to computer program All data is saved in txt format for easy transformation into another software program Troubleshooting Problem Solution Thermometer does not turn on Check battery voltage and replace discharged battery Verify that battery clips grip the battery post tightly Dashes appear in the T1 and T2 data screens Insert missing thermocouple Dashes appear in T1 and or T2 data screens with thermocouples inserted Measure resistance of thermocouples to ensure they are not broken internally Clean the thermocouple and restart Temperature drifts from a known value in a controlled environment Verify that thermocouple type matches the displayed icon Clean and dry the thermocouple blades and allow to air dry Confirm temperature with a known good thermocouple Replace the defective thermocouple if required Problem Solution Relative clock does not start e Verify that the when you push the CREC hermocouple is inserted button correctly Dashes appear during a review e Thermocouple is not of the maximum recorded acknowledged Check for value intermittent or momen
7. h a triple display screen to view measurement results and relative time clock Optional RS 232 software and cable allows collection of real time data to a PC for further analysis or reports TMD90 displays all LCD liquid crystal display segments for approximately 3 seconds when it is first turned on and then provides information on any connected thermocouples Numerous viewing combinations are available The LCD is divided into three distinct sections one large Primary top screen and two smaller bottom screens Secondary and Relative Clock The three display areas are continually updated with the temperature measurements and relative time information There are several options regarding how and what information is presented on the LCD Temperature readings are easily toggled between Fahrenheit and Celsius e A backlight illuminates the LCD for viewing in low light areas The button will freeze the upper display data while allowing the lower displays to continue updating Information e A low battery indicator is also displayed as appropriate e The meter defaults to the last mode selected when turned off Note If no thermocouples are connected four dashes appear in the temperature display Box Contents TMD90 Thermometer Type K thermocouple probe Users Manual Hard plastic carry case 9 V battery installed Display and Controls e eo i pa ewe ee
8. in a period of one 1 year following the date of purchase of the thermome original user Any thermometer claimed to be defective during the warranty period should be returned wi authorized Meterman Test Tools Servi er by the original purchaser or th proof of purchase to an ce Center or to the local Meterman Test Tools dealer or distributor where your thermometer was purchased See Repair section for details Any implied warranties arising out of the sale of a Meterman including but not limited to implied warranties of merchantability and est Tools thermometer itness for a particular purpose are limited in duration to the above stated one 1 year period Meterman Test Tools shall not be liable for oss of use of the thermometer or other incidental or consequential damages expenses or economical loss or for any claim or claims for such damage expenses or economical loss Some states do not allow imitations on how long implied warranties last or the exclusion or imitation of incidental or consequential damages so the above imitations or exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary rom state to state Thermocouple Definitions Type Alloy Alloy J Iron Copper Nickel Fe Constantan Cu Ni K Nickel Chromium Nickel Aluminum Chromel Ni AL Ni Cr R Platinum 13 Rhodium Platinum Pt 13 Rh Pt S Platinum 10
9. tary hermocouple removal Data continues to update after Check for HOLD icon on you press the gt button he display Press button firmly Instrument turns off while Press and recording simultaneously before power on to disable the Auto power off feature Replacing the Battery Replace the 9 V battery when e BAT appears on the right side of the display e The meter will not turn on e BAT appears when you turn on the backlight Even if the battery was recently replaced check the voltage level if there is no response from the meter To replace the battery 1 Remove all thermocouples from the top of the meter 2 Lay the instrument face down on a clean flat surface 3 Loosen the screw and remove the battery door 4 Replace the battery 5 Replace the battery door and tighten the screw Remove the battery if you do not plan to use the meter for a month or more Do not leave the battery in a meter that may be exposed to temperature extremes 9 V ac Adapter For long term measurement recording a 9 V AC adapter can be used in place of the battery This can be purchased at any electronics store using these specs Miniature power plug with inner conductor positive and outer conductor negative 500 mA current rating The 9 V battery can be left in the TMD90 when using the AC adapter WARRANTY The TMD90 Dual Input Thermometer is warranted against any defects of material or workmanship with
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