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User's Manual
InfraRed Thermometer
with Laser Pointer
MODEL 42525
Introduction
Congratulations on your purchase of Extech's 42525 IR Thermometer. This device offers
non-contact infrared temperature measurement capability. The built-in laser pointer
increases target accuracy. Type K thermocouple functionality is built-in also. Proper use
and care of this meter will provide years of reliable service.
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Summary of Contents for Extech Instruments 42525
- Page 1 Laser Pointer MODEL 42525 Introduction Congratulations on your purchase of Extech’s 42525 IR Thermometer. This device offers non-contact infrared temperature measurement capability. The built-in laser pointer increases target accuracy. Type K thermocouple functionality is built-in also. Proper use and care of this meter will provide years of reliable service.
- Page 2 2. Do not point the beam toward anyone's eye 3. Be careful not to let the beam strike the eye from a reflective surface 4. Do not use the laser near explosive gases or in other potentially explosive areas Model 42525 Version 2.2 October 2003...
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Page 3: Specifications
Type K Thermocouple Specifications Range / Resolution -50 to 1999 F (-50 to 1230 Accuracy ± (1% reading + 2 F); ± (1% reading + 1 Sensor type Type K (NiCr – NiAl) Thermocouple (sold separately) Model 42525 Version 2.2 October 2003... -
Page 4: Meter Description
Meter Description LCD Display Function buttons Handle grip Function switches Adjustment potentiometers IR sensor and laser source Type K input jack Laser Trigger Battery Compartment Model 42525 Version 2.2 October 2003... - Page 5 Emissivity values range from 0.1 for a very reflective object to 1.00 for a flat black finish. The 42525 senses IR energy and calculates the temperature based upon the amount of IR energy it receives using a factory default emissivity setting of 0.95 (this setting covers 90% of applications).
- Page 6 Infrared Measurement Considerations 1. The 42525 automatically compensates for ambient temperature deviations, however it may take up to 30 minutes to adjust to extremely wide ambient temperature changes. 2. When low temperature measurements are taken followed by high temperature measurements, several minutes are required for stabilization before the high temperature measurements can be made accurately.
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Page 7: Maintenance
Laser Pointer Operation This 42525 is equipped with a laser pointer that is used to aim the IR sensor more accurately. Be extremely cautious when directing the laser beam, shining the laser beam into someone's eye can cause serious injury. Point the laser beam toward the device under test whose temperature is to be measured. -
Page 8: Warranty
Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year 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.
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