14-in-1 Data Logging Digital Psychrometer with Pin/Pinless Moisture Meter


14-in-1 Data Logging Digital Psychrometer with Pin/Pinless Moisture Meter

The super-versatile, data logging #RHMG70DL is ideal for water damage restoration contractors, facilities maintenance professionals and HVAC system installers/technicians.


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  • Measures 1) ambient temperature, 2) relative humidity (RH), 3) absolute humidity (in mg/L or g/m3), 4) GPP (mixing ratio—in grains per pound or g/kg), 5) relative moisture level using the pinless sensor, 6) absolute moisture level using t
  • Stores/recalls 20 pairs of temperature and RH readings
  • Logs up to 8000 data points internally, for later download and display as an Excel-formatted graph or table on a Windows PC using the included software and USB cable
  • Settable high and low alarms for RH and moisture levels
  • Backlit LCD with 3-digit primary readout + 4-digit secondary readout
  • 33% and 75% #HR33 and HR75 reference salts are available to calibrate RH measurement in the field
  • Min/max memory + data hold
  • Auto power off
  • NIST calibration is available
  • Specifications


    • Ambient temperature measurement range/accuracy: -20° to 167°F (-29° to 75°C)/±3.6°F (±2°C)
    • RH measurement range/accuracy: 0 to 100%/±2.5% from 11 to 90%RH; ±3%RH elsewhere
    • Absolute humidity range: 0.5 to 240mg/m3
    • GPP range: 0 to 999 GPP (0 to 160g/kg)
    • Relative/absolute moisture level range: 0 to 99.9%
    • Pinless moisture measurement depth: 0.75 in. (19mm)
    • Remote moisture probe measurement accuracy/resolution: ±3%/0.1%
    • Remote probe pin length: 0.3 in. (8mm)
    • Dew point range: -76° to 140°F (-60° to 60°C)
    • Atmospheric pressure range: 30 to 120 kPA
    • Vapor pressure range: 0 to 20 kPA
    • Sampling rate: 2X/sec
    • Memory capacity: 20 pairs of readings
    • Auto power off: After 30 minutes of front-panel inactivity
    • Operating temperature: 32° to 110°F (0° to 43°C)
    • Weight (without battery): 6.2 oz. (175g)
    • Power source: "9V" battery (included)


    • PC interface/data logging software on mini-disc
    • USB cable
    • External pin-type moisture probe
    • Battery
    • Soft pouch
    • 1-year limited warranty


    • 7.3 x 2.8 x 1.4 in. (185 x 72 x 36mm)


    Which models of temperature/humidity meters have data logging capability?

    The following models of temperature/humidity meters have data logging capability: HT08, HT20, DL8835, LTH8809DL, LRTH185DL, LRTH185DL1, DTH3007SD, DLAF930SD, HWA2005DL, DAF4207SD, HWA4214SD, RHMG700DL

    Which models of temperature/humidity meters are calibrateable?

    The following models have a calibration feature: EP8703, EP8706, EP8709, EP8710, LRTH185DL, LRTH185DL1, WBGT8758, WBGT8778, DTH3007SD, RHMG650, RHMG700DL

    My instrument is calibrateable. Do I need any additional accessories to perform the calibration?

    Some instruments do require a 33% and 75% salt bottle to perform the calibration. The following models use the HR33 and HR75 bottles: DTH3007SD, EP8703, EP8706, EP8709, EP8710, LRTH185DL, LRTH185DL1, ...
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    What is a psychrometer?

    A psychrometer is an instrument that measures both the wet bulb and dry bulb temperatures.

    Prop 65

    ⚠ WARNING: This product can expose you to chemicals including di2-ethylhexylphthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.