Vaisala HM70 Humidity & Temperature Meter
Starting at $1,466.00

Not in stock. Usually ships in 1-2 weeks [?]

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  • Vaisala HUMICAP sensor
  • Relative Humidity
    • Measurement range: 0 to 100%
    • Accuracy: ±1%RH (variable w/temperature range)
  • Temperature
    • Measurement ranges:
      • HMP75: -20 to 60°C (-4 to 140°F)
      • HMP76: -50 to 120°C (-58 to 248°F)
      • HMP77: -70 to 180°C (-94 to 356°F)
    • Accuracy: ±0.2°C (at 20°C)
  • Connect 2 probes simultaneously
  • NIST traceable (certificate included)
  • Data logging capacity: 2700 points

The Vaisala HM70 HUMICAP hand-held humidity and temperature meter is designed for demanding humidity measurements in spot-checking applications. It is also ideal for field checking and calibration of Vaisala's fixed humidity instruments.

The HM70 incorporates the latest generation of the Vaisala HUMICAP sensor. It is reliable and has better than ever long-term stability. The sensor copes well with chemical interference and provides accuracy that lasts in demanding conditions.

The chemical purge option maintains measurement accuracy in environments with high concentrations of chemicals. The sensor preheat option reduces measurement delays as it keeps the sensor dry when the probe is inserted into hot and humid processes.

The Vaisala HM70 is available with an option of three different probes. The HMP75 is a general purpose probe whereas the HP76 is a long, stainless steel probe especially suitable for spot-checking in ducts. The HMP77 is a small probe at the end of a 5-meter cable. The probe is ideal for difficult-to-reach areas and for on-site calibration of Viasala's process transmitters.

The optional MI70 Link Windows® software and the USB connection cable from a practical tool for transferring logged data and real time measurement data from the HM70 to a PC.


Vaisala Standard Humidity Re-Calibration
Re-calibration with traceable certificate for 5 points (15, 33, 54, 75 & 95% RH) and temperature at ambient, meets ISO 9001 standards


Vaisala 211339 Connection Cable
Connection cable for the HMT120 humidity/temperature transmitter
Vaisala MI70 Calibration Cable
6.5ft (2m) connection cable for calibrating and field-checking instruments that include MI70 indicators
Vaisala DRW216050 Interface Cable
Interface cable for the Vaisala MI70 Indicator
Vaisala HMA6070 Interface Cable
Interface cable for the Vaisala HMD/W 60/70 humidity and temperature transmitters
Vaisala 27168ZZ Analog Output Cable

Power Supplies

Vaisala MI70USADAPTER AC-Adapter
AC-adapter for the MI70 indicator.
In Stock


Vaisala MI70LINK Software
Vaisala MI70LINK Software with USB or serial port cable
In Stock


Vaisala MI70 Cases
Weatherproof carrying case for Vaisala hand held meters and probes


Please consider these optional accessories.

Vaisala 6221 Plastic PC Grid Filter
Vaisala 6221 Plastic PC Grid Filter
Vaisala 10159HM Membrane Filter
Vaisala 10159HM Membrane Filter
Vaisala DRW010276SP Plastic PPS Grid Filter
Plastic PPS Grid Filter for HMP76/77
Vaisala HM47280SP Sintered Filter
SS sintered filter 12mm diameter
Vaisala DRW010281SP PPS Grid
Vaisala DRW010281SP PPS Grid