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Vaisala Dewpoint Meter Kit

Vaisala HUMICAP® Hand-Held Humidity and Temperature Meter HM70

The HM70 is a user-friendly meter for demanding spot-checking humidity measurements. The HM70 is ideal for field checking and calibration of Vaisala's fixed humidity instruments such as the HMP230 Series Transmitters.

The HM70 features a multilingual, menu-based user interface, and a clear graphical LCD display. Three measurement parameters can be displayed and logged into the meter's memory at the same time. An analog output option is also available.

Technical specifications:

Measurement range
0...100 %RH

Accuracy against salt solutions
±2 %RH (0...90 %RH)
±3 %RH (90...100 %RH)

Max. accuracy against high quality certified standards
±1 %RH (0...90 %RH)
±2 %RH (90...100 %RH)

Temperature measurement range
          HMP75   -20...+60 °C
          HMP76   -50...+120 °C
               short time   -50...+180 °C
          HMP77   -70...+180 °C

Three probes are available:

HMP75 general-purpose probe
HMP76 long, stainless steel probe, especially suitable for spot-checking in ducts
HMP77 with a small sensor head at the end of a 5-meter cable, ideal for difficult-to-reach areas and for on-site calibration of Vaisala's process transmitters.

Vaisala HUMICAP® Indicator HMI41 & Humidity Probes

The hand-held HMI41 indicator is versatile and easy to use. With a choice of five different probes it gives you flexibility to work in a variety of applications. The indicator also provides a calibration option: by using a suitable probe and connection cable, most Vaisala's humidity transmitters can be easily calibrated at one point.

All five probes incorporate the Vaisala HUMICAP® Sensor, known for its high accuracy, reliability and long-term stability.

HMP41 relative humidity and temperature probe fix-mounted on the HMI41 indicator
HMP42 for structural humidity measurements from very small spaces (probe diameter 4 mm)
HMP44 for construction moisture measurements (read more...)
HMP45 with a cable for measurements in ducts and chambers
HMP46 for measurements in high temperatures and places hard to reach

Vaisala DRYCAP® Hand-Held Dewpoint Meter DM70

The DM70 can be used in many industrial spot-checking applications as well as a one-point calibration check for fixed dewpoint transmitters such as the DMT242 and DMP248.

Vaisala DRYCAP® Sensor with patented autocalibration function
Low maintenance need due to superior long-term stability
Sensor withstands condensation
Fast response, enhanced by Sensor Purge option
Easy-to-use user interface
Data can be logged and transferred to a PC via MI70 Link software
Compact, small and light
For measurements in very hot and dirty processes, the DSS70A sampling system is available as an accessory
For connection to pressurized processes, a variety of sampling cells are available

Technical specifications:

Dewpoint measurement range
A-probe: -40...+60 °C (-40...+140 °F)
B-probe: -60...+20 °C (-76...+68 °F)

Accuracy
± 2 °C (3.6 °F)

Operating temperature
-10...+60 °C (+14...+140 °F), process temperature up to 200 °C (328 °F) using DSS70A Sampling System

Pressure
0...20 bar (0...290 psig)

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