Vaisala HMK15 Humidity Calibration Kit makes the calibration and adjustment of humidity probes and transmitters easy and reliable.

The HMK15 operating principle is based saturated salt solutions. After mixing salts with water, a certain relative humidity is generated in the air inside the calibration chambers. This method of generating various humidity points enables multi-point field calibration.

HMK15 can be combined with a calibrated reference meter, such as the Vaisala HM70 or HM40 Series models, to create a traceable calibration standard. A certified thermometer is included, along with an easy to follow conversion chart.

The following pre-measured salt packs are available for HMK15:

• Two or three salt chambers

• LiCl salt 11%RH

• MgCl2 salt 33%RH

• NaCl salt 75%RH

• KCl salt 85%RH

• K2SO4 salt 97%RH