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42512  V7.0   03/08 

Introduction 

 

Congratulations on your purchase of the Model 42512 IR Thermometer. This Infrared 
thermometer measures and displays non-contact temperature readings up to 1832

o

(1000

o

C). At 30”, built-in dual lasers converge to 1” target spot to insure accurate targeting 

and temperature measurement. The adjustable emissivity feature allows the IR 
thermometer to measure the temperature of virtually any surface. Proper use and care of 
this meter will provide years of reliable service. 
 
 

 
 
Warranty 

EXTECH INSTRUMENTS CORPORATION (A FLIR COMPANY) warrants this instrument to be free of defects 
in parts and workmanship for three years from date of shipment (a six month limited warranty applies on 
sensors and cables). If it should become necessary to return the instrument for service during or beyond the 
warranty period, contact the Customer Service Department at (781) 890-7440 ext. 210 for authorization or visit 
our website at www.extech.com (click on ‘Contact Extech’ and go to ‘Service Department’ to request an RA 
number). A Return Authorization (RA) number must be issued before any product is returned to Extech. The 
sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in 
transit. This warranty does not apply to defects resulting from action of the user such as misuse, improper 
wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification. Extech 
specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be 
liable for any direct, indirect, incidental or consequential damages. Extech's total liability is limited to repair or 
replacement of the product. The warranty set forth above is inclusive and no other warranty, whether written or 
oral, is expressed or implied. 

 

 
 
Safety 

  Use extreme caution when the laser pointer is on 

  Do not point the beam toward anyone's eye or allow 

the beam to strike the eye from a reflective surface 

  Do not use the laser near explosive gases or in other 

potentially explosive areas 

 

Summary of Contents for 42512

Page 1: ...User Manual Dual Laser InfraRed IR Thermometer MODEL 42512 ...

Page 2: ...ebsite at www extech com click on Contact Extech and go to Service Department to request an RA number A Return Authorization RA number must be issued before any product is returned to Extech The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse impro...

Page 3: ...C Switch compartment DISPLAY 1 SCAN measurement in progress 2 HOLD last measurement locked in display 3 Laser pointer active 4 Power locked ON 5 High limit alarm 6 Low limit alarm 7 C or F temperature units 8 Main temperature display 9 Low battery icon 10 MAX icon 11 Emissivity setting 12 Emissivity icon 13 Max temperature display ...

Page 4: ...f The only exception to this is if the LOCK mode is set to ON Note Select the temperature units ºF ºC using the switch inside the battery compartment Dual Laser Pointer The dual laser pointers are designed to cross at a distance of 30 76cm The spot size at this distance is a 1 diameter and this is the recommended distance to target for most measurements To turn the lasers on off 1 Press and releas...

Page 5: ... The MODE button is used to access the Emissivity Lock High alarm and Low alarm features of the instrument 1 Press and release the Trigger 2 While HOLD is on the display press the MODE button to step through and program the following features A blinking icon indicates the feature is selected E Emissivity Value Press the or buttons to change the emissivity value Lock mode On Off Press the or button...

Page 6: ...ature disables the Auto Power Off feature for the period of use when selected The feature is useful for long term temperature monitoring and hands free use The meter will revert to auto power off if the trigger is pressed during a locked scan Over range Indication If the temperature measurement exceeds the specified temperature range the thermometer will display dashes in place of a temperature re...

Page 7: ...e meter automatically compensates for deviations in ambient temperature However it can take up to 30 minutes for the meter to adjust to extremely wide changes 7 To find a hot spot aim the meter outside the area of interest then scan across in an up and down or side to side motion until the hot spot is located Field of View The meter s field of view is 30 1 For example if the meter is 30 inches fro...

Page 8: ...at black finish For the Model 42515 the emissivity is adjustable from 0 1 to 1 00 Most organic materials and painted or oxidized surfaces have an emissivity factor of 0 95 When in doubt set the emissivity to 0 95 Emissivity Factors for Common Materials Material under test Emissivity Material under test Emissivity Asphalt 0 90 to 0 98 Cloth black 0 98 Concrete 0 94 Skin human 0 98 Cement 0 96 Leath...

Page 9: ... to 1 00 adjustable Field of View D S Approx 30 1 ratio D distance S spot or target Laser pointer Dual Class 2 laser 1mW power Wavelength is 630 to 670nm IR Spectral response 8 to 14 μm wavelength Repeatability 0 5 of reading or 1 8 o F 1 o C whichever is greater General Specifications Display Backlit LCD display with function indicators Response time 150ms Over range indication Operating Temperat...

Page 10: ...struments Corporation 285 Bear Hill Rd Waltham MA 02451 Calibration and Repair Services Extech offers repair and calibration services for the products we sell Extech also provides NIST certification for most products Call the Customer Service Department for information on calibration services available for this product Extech recommends that annual calibrations be performed to verify meter perform...

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