Vaisala HM40 Series [HM42] Humidity and Temperature Meter -40 to 212°F (-40 to 100°C)

HM40 Humidity and Temperature Meter, 320 mm long steel probe, 4 mm diameter, 1.5%RH accuracy, Certificate.
The HM42 has a thin 4 mm stainless steel measurement probe and is an ideal tool for humidity measurements in tight spaces e.g. seams between tiles or beneath flooring. The proven Vaisala HUMICAP® sensor provides reliable measurement while the user interface with graphical trend display makes daily operation quick and easy. User interface is available in 10 languages.

In addition to relative humidity and temperature, the HM42 can display five calculated humidity parameters (absolute humidity, dew point, enthalpy, mixing ratio, wet bulb), all available in both metric and non-metric units. Replaces the popular HMI41 Humidity and Temperature Meter.