Vaisala HMK15 Humidity Calibrator
Starting at $611.00

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

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  • Measurement range
    • LiCl salt: 11% RH
    • MgCl2 salt: 33% RH
    • NaCl salt: 75% RH
    • K2SO4 salt: 97% RH
  • Accuracy (at 20 °C)
    • LiCl salt: ± 1.3% RH
    • MgCl2 salt: ± 1.2% RH
    • NaCl salt: ± 1.5% RH
    • K2SO4 salt: ± 2.0% RH
  • Easy and reliable calibration of humidity probes and transmitters
  • Based on saturated salt solutions
  • Suitable for laboratory use and on-site checks
  • Fast temperature equilibration
  • No external power required
  • Easy to transport

What's in the Box

  • 2 salt chambers
  • Chamber covers
  • Transportation covers
  • Base plate
  • Thermometer
  • Measurement cup
  • Mixing spoon

The Vaisala HMK15 humidity calibrator makes the calibration and spot checking of humidity probes and transmitters easy and reliable. The HMK15 operates on the principle that a saturated salt solution generates a certain relative humidity in the air above it-- the reading of the humidity probe or transmitter can then be adjusted accordingly.

To calibrate, a sensor head is inserted into a salt chamber containing a saturated salt solution. The probe/transmitter reading is then adjusted to the humidity that the specific salt solution generates at that particular temperature. Calibrations are usually performed at least at two different humiditys to ensure accuracy over the entire humidity range. There are four holes in the chamber cover designed for probes and transmitters with 12 mm, 13.5 mm (2 each) and 18.5 mm diameters.

The Vaisala HMK15 humidity calibrator is suitable for both laboratory and filed usage. During transportation, the chambers can be tightly closed with specially designed transit covers.

Vaisala Lithium Chloride Calibration Salt
Lithium chloride salt for generating 11 %RH humidity
Vaisala Magnesium Chloride Calibration Salt
Magnesium chloride salt for generating 33% RH humidity
Vaisala Sodium Chloride Calibration Salt
Sodium chloride salt for generating 75% RH humidity
Vaisala Potassium Sulfate Calibration Salt
Potassium sulfate salt for generating 97% RH humidity
Vaisala Ion Exchanged Water
Ion exchanged water for Vaisala HMK15 humidity calibrator
Vaisala Salt Chamber
Additional salt chamber for Vaisala HMK15 humidity calibrator