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Handheld psychrometer with transparent case and probe attachments

TRIPLETT - TOOLS & METERS

TRIPLETT RHT37 Psychrometer Superheat Onboard NoNIST

SKU CH-0PHQ-BQWD4

Psychrometer measures humidity to ±3 % RH and dew point from –90.4 °F to 122 °F, includes two Type K bead probes and data logging

  • ColorTransparent
  • Accurate humidity readings with ±3% RH precision from 10% to 90%
  • Wide dew point coverage from -90.4°F to 122°F for diverse environments
  • Onboard superheat calculation simplifies HVAC diagnostics instantly
  • Data logging and hold functions capture critical measurements reliably
  • Includes two Type K probes and four AAA batteries for immediate use

TRIPLETT RHT37 Psychrometer Superheat

The TRIPLETT RHT37 Psychrometer measures relative humidity and dew point while calculating superheat for HVAC and refrigeration diagnostics. It suits technicians who need on-board superheat readings without a separate NIST calibration certificate. The instrument uses a precision capacitance sensor and thermistor to deliver humidity and temperature data in the field.

Humidity accuracy limits and response

Humidity accuracy is rated at +/- 3 percent RH across a 10 percent to 90 percent range with a 0.1 percent resolution. Dew point coverage spans from -90.4 degrees to 122 degrees Fahrenheit. The sensor requires up to 60 seconds to respond, so rapid fluctuations may not be captured during fast system changes.

Power and probe requirements before ordering

The meter runs on four AAA batteries which are included along with two Type K temperature bead probes. Verify that Type K probes suit the pipe diameters and insulation types on your jobs. Confirm that the -90.4 to 122 degree F dew point span covers the ambient conditions you typically encounter.

Highlights

  • Accurate humidity readings with ±3% RH precision from 10% to 90%
  • Wide dew point coverage from -90.4°F to 122°F for diverse environments
  • Onboard superheat calculation simplifies HVAC diagnostics instantly
  • Data logging and hold functions capture critical measurements reliably
  • Includes two Type K probes and four AAA batteries for immediate use

Specifications

BrandTRIPLETT
ColorTransparent

Questions about this item

Which version of the TRIPLETT RHT37 should I choose for superheat measurements?

The RHT37 includes onboard superheat calculation with two Type K bead probes and four AAA batteries supplied.

What does the ±3 % RH accuracy mean when I use the meter on site?

Readings stay within three percent of true relative humidity between 10 % and 90 % RH.

How does the capacitance sensor and 60-second response time affect dew-point tracking?

The precision capacitance sensor and thermistor deliver 0.1 % resolution across a -90.4 °F to 122 °F dew-point range with a 60-second settling time.

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