Vaisala DM70 Dewpoint Meter

Hand-held dewpoint meter designed for industrial spot-checking and field calibration applications

The Vaisala DM70 DRYCAP hand-held dewpoint meter measures dewpoint temperature accurately

over a wide measurement range. The probe may be inserted directly into pressurized processes,

and it responds rapidly from ambient to process conditions. The sensor withstands condensation

and fully recovers from getting wet.

Three probe models, all with auto-calibration, are available. The A and B models are both general

purpose probes. The A model is for dewpoint range from -40 to 60C Tσ, and the B model for -60 to

20C Tσ. The C model is specifically developed for Sulfur hexafluoride (SF6) gas with a dewpoint range

to -50C Tσ.

The Vaisala DM70 is calibrated in the factory against internationally traceable standards and delivered

with a calibration certificate. The user interface is menu-based with a clear graphical LCD display with

data logger function. IT can also be used as a tool for reading the output of fixed Vaisala dewpoint

transmitters like the DMT242, DMT142 and DMT340 series.

The Vaisala DM70 has a M170 Link Windows® software program. In combination with a USB connection

cable it’s an excellent tool for transferring logged and real time measurement data from the DM70 to a PC.

Features/ Benefits

·       Designed for industrial spot-checking and field calibration

·       Three models: accurate measurement ranges from -60 to +60C (-76 …+140F)

·       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 M170 Link software

·       Compact, small and light

·       NIST traceable (certificate included)

Technical Data

TEMPERATURE

Measurement range

-10 … +60C (+14 … +140F)

Accuracy at +20C (+68F)

+/-0.2C (+/-0.36F)

Typical temperature dependence of electronics

+/-0.005C/C (+/-0.005F/F)

Temperature sensor

Pt100 RTD Class F0.1 IEC 60751

OTHER VARIABLE AVAILABLE

Dew point converted to atmospheric pressure, ppm volume and ppm weight concentration, absolute humidity,

mixing ratio, relative humidity