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 User Manual 
 

 

RHT37 

Dual Input Hygro-Thermometer 
Psychrometer  

 

 

 

 

 

 

 
 
 
 
 
 
 
 

Introduction 

 

 

Congratulations on your purchase of the Triplett RHT37 Dual Input Hygro-
Thermometer/Psychrometer. This displays humidity, dew point, wet bulb, 
temperature and temperature differential. The triple backlit LCD can be 
changed  to  display  humidity,  temperature,  dew  point  or  humidity, 
temperature  and  wet  bulb  or  humidity,  temperature  and  Type  K 
thermometer. The  RHT37  can  also  display  the  temperature  difference 
between Type K T1 and T2 or air temperature and Type K or Type K and 
dew point. 

 

Description 

 

Summary of Contents for RHT37

Page 1: ...ys humidity dew point wet bulb temperature and temperature differential The triple backlit LCD can be changed to display humidity temperature dew point or humidity temperature and wet bulb or humidity...

Page 2: ...Dew Point Wet Bulb 9 Store Current Reading Backlight 10 Hold Recall Mode 11 RS232 port Note Battery compartment is located on the rear of the instrument Display Description 1 Air T1 Air T1 Dew Point L...

Page 3: ...in the lower left display 6 Pressing the T1T DPSEL button toggles the top left display between Air temperature T1 temperature Air T1 and DP Dew Point 7 Pressing the T2 WB button toggles the lower lef...

Page 4: ...re readings in memory Press the Min AVRST button again and MX appears on the display The display is now showing the maximum humidity and temperature readings in memory Press the Min AVRST button again...

Page 5: ...xt to the memory location number on the display 6 Press the MEM button to manually increment through the stored readings 7 Press RECHOLD MEM for more than 1 second to clear the memory 8 Press RECHOLD...

Page 6: ...onse Time 60 seconds typical Dew Point 68 to 50o C 90 4 to 122 0o F calculated from RH and Air temperature measurements Wet Bulb 21 6 to 50o C 6 88 to 122 0o F calculated from RH and Air temperature m...

Page 7: ...e 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 poi...

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