HM45 Vaisala Humidity and Temperature Meter with Remote Probe
HM45 Vaisala Humidity and Temperature Meter with Remote Probe


: $729.00
Base Price $696.00
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Availability:: Usually Ships in 24 Hours
Product Code: HM45


The Vaisala HM45 temperature and humidity meters are ideal everyday spot-checking tools 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. Remote probe design along with spiral cable makes it easier to measure and check readings in hard to reach places.

In addition to relative humidity and temperature, the Vaisala HM45 provides five calculated humidity parameters (absolute humidity, dew point, enthalpy, mixing ratio, wet bulb), all available in both metric and non-metric units. Vaisala HM45 temperature and humidity meters feature interchangeable HMP113 measurement probes, allowing for simple probe replacement and easy calibration (only the probe needs to be calibrated).

The package includes:

  • Vaisala HM45 humidity and temperature meter with remote probe
  • Calibration certificate (ISO9001 compliant, NIST traceable)
  • Light carrying case
  • Alkaline batteries 2 x AA sized, 1.5V (LR6)
  • User's Guide in English

Detailed information

Measurement parameter(s) Relative humidity
Absolute humidity*
Dew point temperature*
Mixing ratio*
Wet bulb*
Measurement range 0 ... 100 % RH
-40 ... +60 C (-40 ... +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 For probe -40 ... +60 C (-40 ... +140 F) T
Operating voltage 2xAA-size alkaline batteries, type IEC LR6
Housing classification IP54

Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 1 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 Humidity Meter February 22, 2023
Reviewer: Anonymous Person from Troy, MI United States  
Easy order, arrived on-time, works perfect!

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