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Maintenance 

 
 

 

Cleaning and storage 

 

1.  The meter should be cleaned with a damp cloth and mild detergent 

when necessary. Do not use solvents or abrasives. 

 

2.  Store the meter in an area with moderate temperature and humidity. 

 

Battery Replacement 

  

The battery symbol   appears on the lower right of the LCD when 
the 9V battery needs to be replaced. 

 

Replace the 9V battery as follows: 

 

1.  Turn the meter off and disconnect the air temperature probe. 

 

2.  Remove the large flat-head screw on the rear of the meter to remove 

the probe holder. 

 

3.  Remove the rubber holster that surrounds the entire meter by pulling it over 

the top of the meter. 

 

4.  Remove the small Phillips head screw on the rear of the meter. 

 

5.  Open the battery compartment and replace the 9V battery. 

 

6.  Re-assemble the meter before operating. 

 

 

 
 

Never dispose of used batteries or rechargeable batteries in 
household waste. 
As consumers, users are legally required to take used 
batteries to appropriate collection sites, the retail store 
where the batteries were purchased, or wherever 
batteries are sold. 

  

Disposal: 

Do not dispose of this instrument in household waste. The user 

is obligated to take end-of-life devices to a designated collection point for 
the disposal of electrical and electronic equipment. 

 

Other Battery Safety Reminders 

 

o

  Never dispose of batteries in a fire. Batteries may explode or leak.

 

 

o

  Never mix battery types. Always install new batteries of the same type.

 

 

 

Summary of Contents for RHT70

Page 1: ...User Manual RHT70 Hygro Thermometer IR Thermometer...

Page 2: ...r for convenient targeting Safety Use extreme caution when the laser pointer beam 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 u...

Page 3: ...s represent Air Probe Temperature Indicates that the laser pointer is on IR TEMP Indicates that the larger LCD digits represent IR temperature measurement MAX bottom of LCD Max Hold for the IR Tempera...

Page 4: ...ed 3 Press and hold the large red IR button to begin measuring the surface temperature of a desired target IR TEMP and will appear on the display The laser pointer will switch on to help aim the meter...

Page 5: ...ote that in IR temperature mode Data Hold is automatically engaged when the red IR button is released MAX Buttons Press the MAX button bottom of meter for Air Temperature center of meter for IR temper...

Page 6: ...ments 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 spot is located IR Theory IR thermometers measure the surface temperature of...

Page 7: ...of the meter 4 Remove the small Phillips head screw on the rear of the meter 5 Open the battery compartment and replace the 9V battery 6 Re assemble the meter before operating Never dispose of used ba...

Page 8: ...chamber or humidity calibration bottle and wait 20 minutes 3 Turn the meter on and turn the adjustment until the humidity reading on the display agrees with the calibration source Specifications Funct...

Page 9: ...80 RH non condensing Power Supply 9V Battery with auto power off after 10 minutes Battery Life Approx 24 hours if Backlight and Laser are used continuously the battery life is reduced to 2 to 3 hours...

Page 10: ...f purchase This warranty does not apply to any of our products which have been repaired or altered by unauthorized persons in any way or purchased from unauthorized distributors so as in our sole judg...

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