Fieldpiece ARH4 Digital Psychrometer Accessory Head
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- Measures temperature and relative humidity percentage
- Calculates wet bulb and dew point temperatures
- Log relative humidity over time to help troubleshoot systems
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The
Fieldpiece ARH4 Digital Psychrometer Accessory Head measures both relative humidity and ambient air temperature. It calculates dew point and wet bulb. It’s great for calculating target superheat as well as logging %RH, temp, WB or DP over time. The head converts %RH, ambient temperature, dew point temperature, and wet bulb temperature to a voltage at a rate of 1 %RH or degree to 1mVDC and your reading is displayed on your meter. The ARH4 snaps directly onto Fieldpiece stick meters, data logger, electronic handles and adapters.
The ARH4 employs an advanced pair of sensors, a thermistor and a hygrometer, that sense temperature and moisture in the air. With built-in psychometric charts, the ARH4 calculates dew point and wert bulb based on these direct measurements. For the most accurate readings, expose the ARH4 to the air you are measuring for a few minutes so that the sensors can come to equilibrium.
The modular design of the Fieldpiece ARH4 gives it a distinct advantage over other digital psychrometers. The thermistor and hygrometer are highly accurate and designed specifically to stand up to HVAC/R field service. Many competitive standalone psychrometers do not include calculations for wet bulb like the Fieldpiece ARH4. Remote the Fieldpiece ARH4 with our detachable test leads to isolate the area you’re testing and measure or log readings in hard to reach areas. Like all of our accessory head instruments, the modular design means the Fieldpiece ARH4 takes up less space on the truck while providing accurate measurements and calculations.