Lutron Electronics TM-939 Manual
Lutron Electronics TM-939 Manual

Lutron Electronics TM-939 Manual

High temperature infrared thermometer + type k/j/t/e/r

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High Temperature Infrared
THERMOMETER
+ Type K/J/T/E/R
Model : TM-939

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Summary of Contents for Lutron Electronics TM-939

  • Page 1 High Temperature Infrared THERMOMETER + Type K/J/T/E/R Model : TM-939...
  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1. FEATURES............... 1 2. SPECIFICATIONS............2 3. FRONT PANEL DESCRIPTION........6 3-1 Display............6 3-2 Power On/Off Button........6 3-3 Sensor Button ( Left Button )......6 3-4 REL Button ( Down Button )......6 3-5 Hold Button ( Back-light Button ).......6 3-6 REC Button............
  • Page 3: Features

    1. FEATURES * High temperature infrared thermometer, non-contact temperature measurement, wide range -20 蚓 to 650 蚓 ( -4 蚌 to 1112 蚌 ), * 2 in 1, Infrared thermometer + Thermocouple ( Type K/J/T/E/R ) thermometer. * Microcomputer circuit with excellent performance. * Build in 蚓...
  • Page 4: Specifications

    2. SPECIFICATIONS 2-1 General Specifications Display 51 mm x 32 mm supper large LCD display, 15 mm ( 0.6" ) digit size. 1. Infrared thermometer Sensor Type ( Non contact temperature measurement ) 2. Thermocouple probe @ Thermocouple type K @ Thermocouple type J @ Thermocouple type T @ Thermocouple type E...
  • Page 5 Sampling Time Approx. 1 second. Hold Function To freeze the display reading value. Memory Recall Memorize the Maximum, Minimum reading. Offset Available for IR thermometer, & Adjustment Thermocouple thermometer Adjustment by pushing button on front panel. Over Indication Show " - - - - ". Data Output RS232 PC serial interface.
  • Page 6 2-2 Electrical Specifications A. Infrared Thermometer Resolution/ 1蚓 - 20 蚓 to 650 蚓 ranges 1蚌 -4 蚌 to 1202 蚌 < 400 蚓 Accuracy 3 % of reading or 3蚓 ( 5 蚌), which ever is greater. 400 蚓 3 % of reading.
  • Page 7 B. Thermocouple ( type K/J/T/E/R ) Thermometer Sensor Reso- Range Accuracy Type lution Type K 0.1 蚓 -50.0 to 1300.0 蚓 ( 0.2 % + 0.5 蚓 ) -50.1 to -100.0 蚓 ( 0.2 % + 1 蚓 ) 0.1 蚌 -58.0 to 2372.0 蚌 ( 0.2 % + 1 蚌...
  • Page 8: Front Panel Description

    3. FRONT PANEL DESCRIPTION Fig. 1 3-1 Display 3-7 蚓/蚌 Button 3-2 Power On/Off Button ( Up Button ) 3-3 Sensor Button 3-8 Emissivity Button ( Left Button ) ( Laser Button ) 3-4 REL Button 3-9 RS232 Output Socket ( Down Button ) 3-10 Battery Compartment/Cover 3-5 Hold Button...
  • Page 9: Ir Measuring Procedure

    4. IR MEASURING PROCEDURE 4-1 General IR Measurement Measuring consideration of the " Emissivity " All objects emit invisible energy. The amount of energy is emitted proportional to the object's temperature & its ability to emit energy. This ability is called emissvity based upon the material that object is made of and its surface roughness.
  • Page 10: Laser Target Guide

    蚓 0.95 Remark : Suppose the approx. room temperature is 21 蚓 2) Select the " 蚓 " " 蚌 " display unit by pressing " 蚓/蚌 Button " ( 3- 7, Fig. 1 ). 3) Hold the meter, point the " IR Sensing Head " ( 3-12, Fig.
  • Page 11: Measurement Field/Distance

    4-3 Measurement Field Distance/Spot ( D/S ) value The object must large than spot size calculated by the measurement Distance/Spot ratio ( Distance Factor, refer to page 4 ). For accurate measurement, a 1.5 times distance/spot size is recommended. Careful collimating is required when the object is not large enough, if the temperature of the object or a part of it is higher ( or lower ) than the ambient temperature.
  • Page 12: Emissivity Adjustment

    For this reason, measurement of these objects is effected by powerful infrared energy radiated from nearby objects with high emissivity or high temperature. For example, when such objects are measured in sunlight, erratic measurement happened because of powerful radiated energy from the sun and reflected by the surface of the object and received by the sensor.
  • Page 13: Offset Value Adjustment

    4-6 Offset Value adjustment Caused by the environment temperature change or other reasons..the measuring value may drift few degrees ( 1, 2 or 3 degrees ). If you found the measuring values exist little deviation especially when measuring the low temperature, then offset value adjustment will make the compensation &...
  • Page 14: Others

    Then release all buttons, the small digit display ( right bottom corner of LCD ) will disappear, the offset adjustment procedures are completely finished. For example : 蚓 0.95 4-7 Others a)If the meter seems to be giving incorrect reading. Then the object may exist the not correct emissivity value (0.95), then it is necessary to make the right emissivity correction.
  • Page 15: Data Hold, Record, Relative

    4) Display will show the temperature reading that measured from the probe. Offset Value adjustment : Same as 4-6, refer to page 11. Consideration : * When insert the probe plug into the Temp. input socket, please pay attention to the correct polarity. * When the probe plug is inserted into the thermometer socket, or when replace a new probe, the plug must be allowed to stabilize until the temperature same as...
  • Page 16 6-2 Data Record ( Maximum, Minimum reading ) 1) The DATA RECORD function displays the maximum and minimum readings. To start the DATA RECORD function by pressing the " REC Button " ( 3-6, Fig. 1 ) once. " REC " symbol will appear on the LCD display. 2) With the "...
  • Page 17: Battery Replacement

    6-4 LCD Back-light Press the " Back Light Button " ( 3-5, Fig. 1 ) for 2 seconds at least. The " Back-light " of LCD will light 10 seconds approximate and then off automatically. 6-5 Auto Power Off disable The instrument build-in "...
  • Page 18 A RS232 lead with the following connection will be required to link the instrument with the PC serial input. Meter (3.5 mm jack plug) (9W 'D" Connector) Center Pin........ Pin 4 Pin 2 2.2 K Ground/shield......Pin 2 Pin 5 resister The 16 digit data stream will be displayed in the following format :...
  • Page 19: Optional Accessories & Probes

    & the computer. Software Model : SW-U801-WIN, Windows version. * Software apply as the performance of data logging system & data recorder... Carrying Case Model : CA-03, Vinyl soft carrying case. Carrying Case Model : CA-06, Hard carrying case. 0310-TM-939...

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