Skip Ribbon Commands
Skip to main content

HMK15 Humidity Calibrator

Calibration of humidity probes and transmitters -Vaisala Humidity calibrator HMK15

 Contact Us


Learn More



      No measuring instrument stays accurate by itself. It is essential that the functioning of an instrument is periodically checked against a reference. Vaisala has developed the Vaisala Humidity Calibrator HMK15 to make calibration and spot checking of humidity probes and transmitters easy and reliable.

      • Easy and reliable calibration of humidity probes and transmitters
      • Based on saturated salt solutions
      • Suitable for laboratory use and on-site checks
      Technical Specifications

       Technical Specifications

      Options and accessories


      Certified and ready dosed salts:

      Order code:

      Total uncertainty*:


      LiCl salt         11 % RH
      MgCl2, salt     33 % RH
      NaCl, salt       75% RH
      K2SO4, salt    97 % RH


      (± 1.3 % RH)
      (± 1.2 % RH)
      (± 1.5 % RH)
      (± 2.0 % RH)


      * Uncertainties given at +20 °C




      Ion exchanged water
      Extra salt chambers
      Carrying bag




      For complete specifications, please see the brochure or user guide in "Documents".

      Related Services
      • Warranty 
      • All Vaisala products and services are covered by a 12-month warranty as standard, with selected products covered for up to 24 months. During this period you benefit from free repair or replacement of faulty equipment. With Vaisala’s extended warranty, you get free repair or replacement for five years.
      • Repair Services 
      • Vaisala repair services include fault tracing and repair or replacement of failed components, as well as final testing to ensure your equipment is functioning properly. Repairs can be carried out on site or at one of our service centers.
      • Spare Parts 
      • Get rapid access to the spare parts you need to maximize the uptime of your equipment and ensure reliable and accurate operation. In addition to standard spare part delivery, we also offer an express service where parts are shipped within one business day.