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1. so as to measure the temperature Treal of the part on which body tape or black body spray is applied 4 Measure the temperature T of the parts to which body tape or black body spray is not applied 5 Change the thermal emissivity value e 6 The value of the thermal emissivity e at which T comes out to be equal to Treal is the correct value for the inherent thermal emissivity of the body whose temperature is to be measured MAINTENANCE Battery Replacement Power is supplied by four 1 5V AAA size batteries The EJ appears on the LCD display when replacement is needed To replace the batteries remove the screw from the back of the meter and lift off the battery cover case Remove the batteries from battery contacts Cleaning Periodically wipe the case with a damp cloth and deter gent do not use abrasives or solvents OPERATION 1 When the power is down pressing MEAS button turns on the power 2 Use 3 button to select turn on or turn off the display Back Light 3 Use button to select turn on or turn off the Laser beam 4 Press the MODE button if necessary to set the thermal emissivity value 5 Point the lens at the object whose temperature is to be measured 6 Press the MEAS button Measurement is performed as long as the MEAS button is kept pressed 7 Referring to the spot size figure aim the laser beam at the object whose temperature is to be measured NOTE Although the
2. and ALM Lo A key The numerical value is increased Y key The numerical value is reduced If either of these numerical value keys is held down the numerical value changes rapidly in the appropriate direction The data will store in nonvolatile storage region while after settings completing In the this mode the automatic power off feature is disabled 4 Emissivity All objects emit invisible infrared energy The amount of energy emitted is proportional to the object s temperature and its ability to emit IR energy This ability called emissivity is based upon the material that the object is made of and its surface finish Emissivity values range from 0 10 for a very reflective object to 1 00 for a black body Factory set emissivity value of 0 95 which cover 90 of typical applications 5 If the surface to the measured is covered by frost or other material clean it to expose the surface 6 If the surface to be measured is highly reflective apply masking tape or matt finish black paint to the surface 7 If the meter seems to be giving incorrect readings check the front cone There may be condensation or debris obstructing the sensor clean per instructions in the maintenance section How to specify the thermal emissivity 1 Stick black body tape on the object whose temperature is to be measured or spray it with black body spray 2 Set the thermal emissivity value on the LCD to 0 95 3 Press the MEAS key
3. this will enter MAX MIN Present cycling MIN The minimum temperature during measure ment is displayed when measuringand also pressing the mode key this will enter MAX MIN Present cycling MEASUREMENT CONSIDERATIONS 1 Theory of Measurement Every object emits infrared energy in accordance with its temperature By measuring the amount of this radiant energy it is possible to determine the temperature of the emitting object 2 About Infrared Infrared radiation is a form of light electromagnetic radiation and has the property that it passes easily through air while it is easily absorbed by solid matter With an emission thermometer which operates by detect ing infrared radiation accurate measurement is possible irrespective of the air temperature or the measurement distance 3 Emission Thermometer Structure Infrared radiation which has been emitted from the object is focused upon an infrared radiation sensor via an optical system This includes a lens which is transparent to infrared radiation and 5 3m cut off filter The output signal from the infrared radiation sensor is input to an electronic circuit along with the output signal from a standard temperature sensor Thermopile NOTE If from the power down condition the MEAS key is held down for more than four second MAX MIN record starts SET MODE amp Numeric input key SET annunciator appears when a numerical value can be set during setting of e ALM Hi
4. OPERATING INSTRUCTIONS TECPEL 512 C INFRARED THERMOMETER WITH LASER MARKER ELECTRICAL Temperature Range 4 F to 1022 F 20 C to 550 C Display Resolution 1 F 1 C Accuracy 2 of reading or 6 F 3 C whichever is greater 64 4 to 82 4 F 18 to 28 C ambient operating temperature Temperature Coefficient 0 2 of reading or 0 36 F 0 2 C whichever is greater change in accuracy per F C change in ambient operating temperature above 82 4 F 28 C or below 64 4 F 18 C Response Time 1 second Spectral Response 6 to 14 m nominal Emissivity 0 10 to 1 00 by step of 0 01 Detection Element Thermopile Optical Lens Fresnel Lens Sighting 1 beam laser marker lt 1mW class 2 Field of View 100mm at 1000mm 3 9 at 39 0 Diameter of spot Inch eo Distance to object Cinch Spot size increases with distance from the probe tip as shown Spot Diameter measured at 90 Energy INTRODUCTION This instrument is a portable easy to use 3 digit compact sized digital infrared thermometer with laser sighting de signed for simple one hand operation Meter comes with Backlit LCD display Auto hold function and auto power down 20 seconds approx after releasing MEAS button to extend battery life SAFETY INFORMATION It is recommended that you read the safety and operation instructions before using the infrared thermometer A DANGER Pressing the amp button t
5. field of measurement or Field of View and the spot almost coincide actually the field of measurement corresponds to the diam eter for 90 optical response The object whose temperature is to be measured needs to be larger than the measurement diameter spot of size by an adequate margin at least 1 5 to 2 times larger 8 Read the display Substance Thermal Substance Thermal emissivity emissivity 0 90 to 0 98 Cloth black 0 94 Human skin 0 96 Lather 0 75 to 0 80 0 90 Charcoal powder 0 96 0 92 to 0 96 Lacquer 0 80 to 0 95 0 92 to 0 96 Lacquer matt Rubber black 0 96 to 0 98 0 83 Plastic 0 90 to 0 95 Timber 0 90 to 0 94 Paper 0 70 to 0 94 0 94 chromium oxides 0 81 0 80 to 0 90 Copper oxides 0 78 0 89 to 0 91 Iron oxides 0 78 to 0 82 0 93 to 0 96 Textiles 0 90
6. nght Red 630 670nm Operating Distance 2 to 50 feet Power out lt 1mW class 2 laser product Continuous Measurement 1 In the power down mode holding the MODE key down and then pressing the MEAS key will put the meter into the continuous measurement mode 2 When the MEAS key is pressed again to stop measuring temperature and automatically hold the display reading the meter power down automatically after 20 seconds NOTE During the continuous measurement mode the HOLD indication does not appear NOTE During the continuous measurement mode the laser sighting is not turned on MODE SELECTION AND OPERATION Press MODE button switches the mode around the cycle gt ALM Hi gt ALM Lo MAX gt MIN gt HOLD HOLD Releasing MEAS button stops measuring tem perature the HOLD indication appears and the measured temperature is held The thermal emissivity of the object set using the A and V keys ALM Hi The upper limit alarm temperature is set using the A and V keys When the measured tem perature is exceeded the Hi setpoint the beeper emits a discontinuous pulse tone and ALM Hi is displayed ALM Lo The lower limit alarm temperature is set using the A and V keys When the measured tem perature is blew the Lo setpoint the beeper emits a continuous pulse tone and ALM Lo is displayed MAX The maximum temperature during measure ment is displayed when measuring and also pressing the mode key
7. ton Press MEAS button to turn on the meter for measuring temperature Releasing MEAS button to stop measuring temperature and automatically hold the display reading the meter power down automatically after 20 seconds Selecting the Temperature Scale C or F Readings are 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 in power down mode hold the Se button F A button C down and then press MEAS button until the F C annunciator appear SPECIFICATIONS GENERAL Display 3 digit liquid crystal display LCD with maximum reading of 1999 Low battery indication the 3 is displayed when the battery voltage drops below the operating level Measurement rate 1 times per second nominal Operating Environment 32 F to 122 F 0 C to 50 C at lt 70 relative humidity Storage Temperature 40 F to 140 F 20 C to 60 C 0 to 80 R H with battery removed from meter Auto power off 20 seconds Standby consuming current lt 9mA Battery 4 pcs 1 5V AAA size UM 4 R03 Battery Life 30 hours continuity typical with carbon zinc battery Laser marker and Back Light not illuminated Dimensions 170mm H x 44mm W x 40mm D Weight 160g including batteries Laser Specifications Laser safety classification of Class 2 Wave Le
8. urns the laser beam on and off Exercise extreme care and do not allow the laser beam to enter your eye or those of any other person or animal Donotlook directly into the laser light from the optical system When measuring the temperature of an object which has a mirror finish be careful not to allow the laser light beam to be reflected off the surface into your eyes or those of another person Donotallow the laser light beam to impinge upon any gas which can explode OPERATING INSTRUCTIONS Auto Power down function If unused for about 20 seconds the meter will power down automatically Press MEAS button switch to resume power on mode Turning the Power on When the power is down press MEAS button to turn on the meter The values and settings on the LCD return to what they were before the power was last turned off NOTE If from the power down condition the MEAS button is held down for more than four second measurement starts X Display Back Light Button Press 3 button to turn on or off the LCD Back Light during measurement or while the display shows HOLD MAX or MIN CAUTION Do not use the unit near any device which generates strong electromagnetic radiation or near a static electrical charge as these may cause errors Do not use the unit where it may be exposed to corrosive or explosive gases The unit may be dam aged or explosion may occur Do not keep or use this unit in an environment
9. where it will be directly illuminated by sunshine or where it will be exposed to high temperatures high humidity or condensation If you do it may be deformed its insulation may be damaged or it may no longer function according to specification Do not point the lens at the sun or at any other source of strong light If you do the sensor may be damaged Do not contact the lens against the object whose temperature is to be measured or get it dirty allow it to be scratched or allow any foreign material to adhere to it Doing so may caus errors Do not touch or hold by the front cone Temperature reading can be affected by heat from hand Do not place the meter on or around hot objects 70 C 158 F It may cause damage to the case If the meter is exposed to significant changes in ambient temperature hot to cold or cold to hot Allow 20 minutes for temperature stabilization before tak ing measurement Condensation may form on the lens when going from acold to hot environment wait 10 minutes for conden sation to dissipate before taking measurements This unit is not constructed to be water proof or dustproof so do not use itin a very dusty environment or in one where it will get wet Laser Sighting Press button to on the amp annunciator If A annunciator is on press MEAS button and the laser beam will turn on and annunciator will blink Releasing MEAS button turns off the laser beam MEAS MEASURE But

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