HM40 series Hand-held temperature and humidity meter Description：

User 's Manual Selection table

The easy-to-use HM40 humidity meter features a compact portable design that enables reliable measurements in a variety of applications. From moisture measurement of building structures and air conditioning systems to humidity measurement of industrial processes and life science applications, the series of meters can be used as ideal on-site inspection tools. There are four types of meters： HM41、HM42、HM45、和HM46.

Easy to use：

The HM40 features a user-friendly large-size graphical display and easy-to-use buttons. The user interface is simple and intuitive, and 10 languages can be displayed. Various Settings can be modified to meet the specific needs of the user. In addition to relative humidity and temperature, the HM40 provides five calculated humidity parameters, all of which can be displayed in metric and non-metric units. The HM40 is powered by 2 AA batteries. Also can choose USB connection external NIMH battery charger and rechargeable NIMH battery. Each HM40 comes with a wristband and instrument pack.

Recalibration is simple and easy：

Calibration of the HM40 is simple: simply return the meter to the Vaisala Service Center for recalibration. In addition, the user can compare the humidity in the field with a 'standard meter', which can be a hand-held meter or Vysala's HMK15 humidity tester. The meter indicator has a calibration reminder function that can be activated by the user.

Feature：

1. Humidity measuring range0 ... 100 %RH

2. Temperature measuring range -40... +100 °C (-40... +212 °F), depending on the probe model. HM46 can measure temperatures up to +180 °C (+356 °F) for short periods of time.

3. Using proven and reliable Vaisala HUMICAP® sensor technology

4. Expiration calibration reminder function

5. The probe can be calibrated by the user using a field benchmark

6. A graphical display displays when the measurement has reached a steady state

7. A hold button is available to lock the screen and save the measured readings

8. Multilingual user interface in 10 languages (English, German, French, Chinese, Portuguese, Russian, Finnish, etc.)