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User Manual
RHT45
Digital Psychrometer
Introduction
Congratulations on your purchase of the Triplett RHT45 Digital
Psychrometer. This meter serves as a very valuable HVAC diagnostic tool.
It measures wet bulb (WB), dry bulb (DB), percent relative humidity (RH%),
and dew point (DP) which allows for quick and easy diagnostic of airflow
problems. Specialized modes include NORMAL Psychrometer Mode,
Target Superheat Mode (TSH) and Target Evaporator Exit Temperature
Mode (TEET) .
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Summary of Contents for Triplett RHT45
- Page 1 RHT45 Digital Psychrometer Introduction Congratulations on your purchase of the Triplett RHT45 Digital Psychrometer. This meter serves as a very valuable HVAC diagnostic tool. It measures wet bulb (WB), dry bulb (DB), percent relative humidity (RH%), and dew point (DP) which allows for quick and easy diagnostic of airflow problems.
- Page 2 Safety Do not operate the meter in environments where the following are present: explosive gases (or materials), combustible gases (or materials), steam, or dust. Please replace the battery immediately when the low battery symbol appears on the LCD. ...
- Page 3 Display Low Battery Indicator RH/DP/WB/DB Indicator °F/°C Indicator Indoor/Outdoor Indicator Upper Display –Displays Measurement Value MAX/MIN Indicator Humidity Indicator Hold Mode Indicator T/C or NTC Indicator 10. Mode Select Indicator 11. APO Indiicator 12. Lower Display – Displays Target Superheat and Target Evaporator Exit Temp 13.
- Page 4 How it Works: This meter has three sensors. One for RH% and two for temperature. Depending on where you place these sensors and how you set up the meter. The meter will display the measurements and the results of calculations from these inputs.
- Page 5 Target Superheat Mode(TSH) （1）.Turn the Meter ON by pressing the button ,Select TSH by pressing “MODE” button until TSH is displayed in the LCD. * Note: blinking numbers mean you are seeing real-time measurements. Non-blinking mean the reading has been ‘locked in ’.Press ENTER button to unlock and take a new reading.
- Page 6 Note: blinking numbers mean you are seeing real-time measurements. Non- blinking mean the reading has been ‘locked in ’.Press ENTER button to unlock and take a new reading. (2). Wet the thermocouple A wet sock thermocouple and clip both thermocouples (thermocouple A and thermocouple B) in front of the evaporator. (3).
- Page 7 Select °C or °F Turn the Meter ON by pressing the button , Select °C or °F by pressing “C/F” button until °C or °F is displayed in the LCD. Press and holding “C/F” button for 2s to select backlight on or off. Auto-Power-Off (APO) This meter shall enter a sleep mode after 15 minutes of inactivity, Pressing the “MAX/MAIN”...
- Page 8 Triplett / Jewell Instruments extends the following warranty to the original purchaser of these goods for use. Triplett warrants to the original purchaser for use that the products sold by it will be free from defects in workmanship and material for a period of (1) one year from the date of purchase.
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