Vaisala HUMICAP® Hand-Held Humidity and Temperature Meter Series HM46


The Vaisala HM46 Humidity and Temperature Meter is designed for spot-checking in a wide variety of environments.



Vaisala HUMICAP® Hand-Held Humidity and Temperature Meter Series HM46

The easy-to-use HM46 is a compact and portable humidity meter that provides reliable measurements in a wide range of applications. It is the ideal spot-checking tool for everything from structural moisture measurement and air conditioning systems to humidity measurement in industrial production processes and life science applications.

Simple and Easy to Use

The HM46 has a large, user-friendly graphical display and easy-to-use push buttons. The user interface is simple and intuitive, and available in 10 languages. Also, many settings can be modified to meet users’ individual needs. In addition to relative humidity and temperature, the HM46 provides five calculated humidity parameters, all of which are available in metric and non-metric units. The HM46 is powered by 2 AA batteries. An external NiMH charger with USB connection and rechargeable AA sized NiMH batteries are available as an option. Each model also comes with a handy belt clip and case.

▪ Compact, portable, and easy to use
▪ Versatile meter with wide measurement range and multiple calculated parameters
▪ Ideal for spot-checking in a wide variety of applications

▪ Humidity measurement range 0 … 100 %RH
▪ Temperature measurement ranges – The HM46 can measure up to +180 °C (+356 °F) for a short period of time.
▪ Incorporates proven Vaisala HUMICAP® sensor technology
▪ Calibration reminder function
▪ Probes can be user calibrated using an on-site reference
▪ Graphical display indicates when measurement has stabilized
▪ Hold-button to freeze the screen and save the reading
▪ Multilingual user interface available in 10 languages (EN, DE, FR, JA, ZH, PT, ES, RU, FI, SV)

Technical Data
HM46 Humidity and Temperature Meter for Mechanical Durability and Extra Reach
Humidity measurement accuracy (including non-linearity, hysteresis, and repeatability):
at 0 … +40 °C ±1.5 %RH (0 … 90 %RH)
±2.5 %RH (90 … 100 %RH)
at -40 … 0 °C and ±3.0 %RH (0 … 90 %RH)
+40 … +80 °C ±4.0 %RH (90 … 100 %RH)
at +80 …+100 °C ±4.0 %RH*
Probe head temperature measurement range;
-40 … +100 °C, short-term
up to +180 °C
Measurement probe – HM46PROBE
Probe head material – Stainless steel, brass filter
Housing classification – IP40 (probe), IP54 (indicator)

CEN-G-HM40-Datasheet-B211064EN (002)