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Sensors & Transmitters
   Data Acquisition
   pH and ORP
   Relative Humidity / Dewpoint
     RH Fixed Installation
     RH Portable Instruments
       HM70 RH Meter & Calibrator
       DM70 Dewpoint Meter & Calibrator
       HM40 Handheld RH & T Meter
       HMI41 Handheld RH & T
       HMK15 Humidity Calibrator
     Probes and OEM Modules
   Differential Pressure
   Carbon Dioxide
   Nitrogen Dioxide
   Carbon Monoxide
   Smoke Detectors
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Tel: 1-925-706-7433

Vaisala HM40 Compact Humidity and Temperature Meter
Vaisala Instruments

HM40 Compact Humidity and Temperature Meter

Vaisala HM40 Humidity and Temperature Meter

The HM40 is an ideal everyday spot-checking tool for HVAC professionals. The proven Vaisala HUMICAP® 180R sensor provides reliable measurement while the user interface with graphical trend display makes daily operation quick and easy. User interface is available in 10 languages.

In addition to relative humidity and temperature, the HM40 can display five calculated humidity parameters (absolute humidity, dew point, enthalpy, mixing ratio, wet bulb), all available in both metric and non-metric units. The HM40 features an interchangeable HMP113 measurement probe allowing for easy calibration (only the probe needs to be calibrated) or replacement of the probe.

The HM40 replaces the HM34 hand-held humidity meter.

PDF File Brochure PDF File User Guide PDF File Order Guide
HM40 Graphical Display
Measurement parameters Relative humidity
Absolute humidity*
Dew point temperature*
Mixing ratio*
Wet bulb*
Measurement Range 0...100% RH
-10 ... +60 °C (+14 ... +140 °F) T
Measurement accuracy At temperature +0 ... 40 °C (+32 ... +104 °F):
±1.5 % RH (0 ... 90 % RH)
±2.5 % RH (90 ... 100 % RH)
±0.2 °C T
Operating temperature -10 ... +60 °C (+14 ... +140 °F) T
Operating voltage 2xAA size alkaline batteries, type IEC LR6
Housing classification IP54

HM40 Handheld RH & T Meter

  Vaisala HM40 Humidity and Temperature Meter
Code: VIHM40
Price: $635.00
Quantity in Basket: none

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