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Model 42545

A

 V4.1   02/08 

 

Support line (781) 890-7440 

Technical support: Extension 200; E-mail: [email protected] 

Repair & Returns: Extension 210; E-mail: [email protected] 

Product specifications subject to change without notice 

For the latest version of this User’s Guide, Software updates, and other 

up-to-the-minute product information, visit our website: www.extech.com

 

Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451 

Specifications 

Infrared Thermometer Specifications 

Range / Resolution 

-58 to 1832

o

F (-50 to 1000

o

C) 0.1

o

C/F 

Accuracy 

(of reading) 

± (2% of r 9°F/4°C) <30°F (-1°C) 

± (2% of r 4°F/2°C) 30°F to 800°F (-1°C to 426°C) 

± (2.5% of r 6°F/3°C) 800 to 1000°F(426 to 537°C) 

± (3% of r 9°F/4°C) >1000°F/537°C 

Note: Accuracy is specified for the following ambient temperature 
range: 64 to 82°F (18 to 28°C) 

Emissivity 

Adjustable from 0.1 to 1.00 (0.95 default value) 

Field of View 

D/S = Approx. 50:1 ratio (D = distance, S = spot) 

Laser power 

Less than 1mW (Class II) 

Spectral response 

8 to 14 

μ

m (wavelength) 

General Specifications 

Display  

 

digit backlit LCD display with function indicators

 

Display rate 

1 second approx. 

Operating Temperature  

32°F to 122°F (0°C to 50°C) 

Operating Humidity 

Max. 90% RH 

Power Supply 

9V battery 

Automatic Power Off 

Approx. 7 seconds after the trigger is released 

Safety compliance 

CE 

Weight 

10.2 oz. / 290g 

Dimensions 

3.9 x 2.2 x 9.0” (100 x 56 x 230mm) 

 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

Copyright 

©

 2008 Extech Instruments Corporation. 

All rights reserved including the right of reproduction in whole or in part in any form.

 

Summary of Contents for 42545A

Page 1: ...User s Manual High Temperature InfraRed Thermometer with Laser Pointer MODEL 42545A ...

Page 2: ...ble 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 a...

Page 3: ...m 2 IR Sensor 3 Measurement Trigger 4 Battery and Switch Compartment 5 LCD Display 6 Push buttons 7 Handle Grip 8 Temperature Units ºC ºF Switch 9 Test Lock ON OFF Switch 10 Alarm ON OFF Switch Note There is a tripod mount on the bottom of the handle 1 2 3 4 8 9 10 ...

Page 4: ...y shut off The only exception to this is if the TEST LOCK switch is set to ON Note Select the temperature units ºF ºC using the top switch inside the battery compartment Backlight Laser Pointer 1 While pulling the Trigger push the backlight laser button once to turn on the backlight 2 Press it again to turn on the laser pointer When the laser is ON the laser icon will appear in the LCD 3 Press the...

Page 5: ...value In the AVG mode all of the readings in the current measurement session are averaged and the value is displayed HAL High Alarm setting The temperature that when exceeded causes the audible visual alarm to trip LAL Low Alarm setting The temperature that when exceeded high to low causes the audible visual alarm to trip High and Low Alarm Feature The Model 42545a has an alarm feature whereas a H...

Page 6: ...ents through transparent surfaces such as glass may not be accurate 5 Steam dust smoke etc can obscure measurements 6 The 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 motion until the hot s...

Page 7: ... flat black finish For the Model 42545a 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 L...

Page 8: ...6 F 3 C 800 to 1000 F 426 to 537 C 3 of reading 9 F 4 C 1000 F 537 C Note Accuracy is specified for the following ambient temperature range 64 to 82 F 18 to 28 C Emissivity Adjustable from 0 1 to 1 00 0 95 default value Field of View D S Approx 50 1 ratio D distance S spot Laser power Less than 1mW Class II Spectral response 8 to 14 μm wavelength General Specifications Display 4 digit backlit LCD ...

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