The Vaisala HM41 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 for this humidity and temperature meter is
available in 10 languages.
In addition to relative humidity and
temperature, the Vaisala HM41 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 Vaisala HM41 features an
interchangeable HMP113 measurement probe allowing for easy calibration
(only the probe needs to be calibrated) or replacement of the probe.
The Vaisala HM41 is replacing the HM34 hand-held humidity meter.
The humidity and temperature meter package includes:
- HM41 indicator with attached HMP113 RH&T probe
- Calibration certificate (ISO9001 compliant, NIST traceable)
- Belt clip
- Light carrying case
- Alkaline batteries 2 x AA sized, 1.5V (LR6)
- User's Guide in English
Specifications
| Measurement parameter(s) | Relative humidity
Temperature
Absolute humidity*
Dew point temperature*
Enthalpy*
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 |
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