HM40

HM40 Hand-Held Humidity and Temperature Meter for Quick Inspections and Spot-Checking

​The Vaisala HUMICAP® Hand-Held Humidity andTemperature Meter HM40 is compact and easy to use - ideal for quickinspections and spot-checking in wide variety of applications; fromstructural moisture control and air conditioning systems toindustrial production processes and life science applications. Ithas an intuitive and multilingual user-interface and ten languageoptions. Multiple calculated parameters are available: dew point,wet bulb temperature, absolute humidity, mixing ratio, andenthalpy.

HM40 series includes following models:

  • HM41 Humidity and Temperature Meter - compact standardmodel
  • HM42 Humidity and Temperature Meter with thin 4 mm remoteprobe 
  • HM45 Humidity and Temperature Meter with standard remoteprobe
  • HM46 Humidity and Temperature Meter with long, stainless steelremote probe

RELATIVE HUMIDITY

Measurement range 0 ... 100 %RH

Accuracy (including non-linearity, hysteresis, and repeatability) for different models

at 0 ... +40 °C (+32 ... +104 °F)                     ±1.5 %RH (0 ... 90 %RH)

                                                                     ±2.5 %RH (90 ... 100 %RH)

 

Factory calibration uncertainty at +20 °C (+68 °F)       ±1.5 %RH

Humidity measurement response time (90 %)  with plastic grid filter (HM41 and HM45) 17s (90%)

                                                                    with membrane filter and steel grid (HM42) 26 s (90 %)    

                                                                    with brass sintered filter (HM46) 40 s

 

Stability ±2 %RH over 2 years

Humidity sensor HM41, HM45, HM46 HUMICAP® 180R HM42 HUMICAP® 100R-Mini

 

TEMPERATURE

Measurement range HM41 -10 ... +60 °C (+14 ... +140 °F)

HM42 -40 ... +100 °C (-40 ... +212 °F)

HM45 -40 ... +60 °C (-40 ... +140 °F)

HM46 -40 ... +100 °C (-40 ... +212 °F), short-term up to +180 °C (+356 °F)

Accuracy over temperature range:

            at 0 ... +40 °C (+32 ... +104 °F)                                                                   ±0.2 °C (0.36 °F)

            at -40 ... 0 °C and +40 ... +100 °C (-40 ... +32 °F and +104 ... +212 °F)        ±0.4 °C (0.72 °F)

 

Temperature sensor HM41, HM45, HM46 Pt1000 RTD Class F0.1 IEC 60751 HM42 Pt1000 RTD Class F0.3 IEC60751


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