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Automatic Power OFF 

 

To conserve battery life the meter automatically shuts off after 10 minutes. 

 

o

F/

o

C buttons 

 

The Air Temperature and the IR Temperature units can be selected 
by the user. For Air Temperature, press the 

o

F/

o

C button on the 

bottom left. For the IR temperature units, press the 

o

F/

o

C button at 

the center of the meter. 

 

Data Hold Buttons 

 

Displays can be held (frozen) at any time by pressing the HOLD button. 
For Air Temperature, use the HOLD button on the bottom right. For IR 
Temperature and for Relative Humidity, use the HOLD button on the right 
center of the meter. Press HOLD again to exit the mode. Note 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 temperature and Relative Humidity) to display only the 
highest reading. The displayed measurement will now only change when 
a higher reading is detected. Press the MAX button again to exit this 
mode. 

 

Backlight

 

Press the backlight

 button to turn the light on. Press again to 

turn it off. 

 

The polarization index Test calculates the ratio of the resistance 
measurement after 10 minutes to the resistance measurement after 1 
minute: Results are determined by the type, age and condition of the 
insulation material tested. Established standards and test procedures 
should be used to establish pass/fail criteria for each application. 
 
 
 
 
 
 
 
 

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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