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42570  V1.2   8/09 

Battery Replacement 

When the low battery symbol      appears on the display, replace 
the meter’s battery (9V). The battery compartment is located 
behind the panel that surrounds the meter’s trigger. Open the 
compartment by pressing the release button (1) and then pulling 
the panel (2) down from the trigger area. Replace the 9V battery 
and close the battery compartment cover. 

 

 

 

Data Logger 

Storing Data: 

The thermometer is capable of storing up to 100 

data points.  

Infrared: 

To store data from an infrared reading,  

1. 

Pull and Hold the trigger  

2. 

Press the MODE button until LOG appears in the lower left corner of the display; a 
log location number will be displayed. If no temperature has been recorded in the 
displayed LOG location, 4 dashes will appear in the lower right corner.  

3. 

Aim the unit at the target area you want to record, and press the laser/backlight 
button. The recorded temperature will appear in the lower right corner.  

4. 

To select another log location, press the up and down keys. 

Recalling Data: 

To recall stored data after the unit shuts off,  

1. 

Press the MODE button until LOG appears in the lower left corner. A LOG location 
number will be shown below LOG, and the stored temperature for that location will 
be display.  

2. 

To move to another LOG location, press the UP and Down keys. 

Log Clear Function: 

To clear the memory, 

The “Log clear” function allows you to quickly clear all logged data points. This function 
can only be used when the unit is in the LOG mode.  
1. 

While in LOG mode, press the trigger, and then press the “down” arrow button until 
LOG location “0” is displayed. 

Note:

 This can only be done when the trigger is 

pulled. LOG location “0”cannot be accessed, by using the “up” arrow button. 

2. 

When LOG location “0” shows in the display, press and release the laser/backlight 
button, then press and release the up arrow key. A tone will sound, and the LOG 
location will automatically change to “1”, signifying that all data locations have been 
cleared. 

 

 

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Summary of Contents for 42570

Page 1: ...User Manual Dual Laser InfraRed IR Thermometer MODEL 42570 ...

Page 2: ...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 defect...

Page 3: ...USB port side DISPLAY 1 SCAN measurement in progress 2 Bargraph 3 Laser pointer active 4 Power locked ON 5 HOLD last measurement locked in display 6 Max Min temperature display or memory location display 7 Main temperature display 8 High Low limit alarm 9 USB connection 10 Battery status 11 Emissivity or Type K or Stored value display 12 Thermocouple probe installed 13 Emissivity setting 14 Logged...

Page 4: ...easured values LOG A memory location is displayed in the small upper display and the value in that location is displayed in the small lower display Press the or buttons to scroll through the locations TK With a Type K thermocouple probe connected to the meter the probe temperature is displayed in the small lower display With the trigger released HOLD displayed Press the MODE button to scroll throu...

Page 5: ...ODE button The setting is stored and memory and will remain as the turn on condition until changed Temperature Units The temperature units can be set to F or C The selection is made using the MODE button Lock feature The LOCK feature 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 r...

Page 6: ...ecorded temperature will appear in the lower right corner 4 To select another log location press the up and down keys Recalling Data To recall stored data after the unit shuts off 1 Press the MODE button until LOG appears in the lower left corner A LOG location number will be shown below LOG and the stored temperature for that location will be display 2 To move to another LOG location press the UP...

Page 7: ...mpensates 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 50 1 For example if the meter is 50 inches from the target spot the di...

Page 8: ... F 1 o C whichever is greater Thermocouple Thermometer Type K Range 50 to 1370 C 58 F to 2498 F Resolution 0 1 C 0 1 F 1000 1 C 1 F 1000 Accuracy 50 to 1000 C 58 to 1832 F 1 5 of reading 3 C 5 F 1000 to 1370 C 1832 F to 2498 F 1 5 of reading 2 C 3 6 F General Specifications Display Backlit LCD display with function indicators Response time 100ms Over range indication Operating Temperature 32 o F t...

Page 9: ...ject 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 Copyright 2009 Extech Instruments Corporation a FLIR company All rights reserved including the right of reproduction in whole or in part in any form ...

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