Hand-Held Dewpoint Meter for Spot-Checking Applications - VAISALA - #1

P.O. Box 26, FI-00421 Helsinki, FINLAND Tel: +358 9 894 91 Fax: +358 9 8949 2485 Email: industrialsales@vaisala.com www.vaisala.com/DM70

DM70 Hand-Held Dewpoint Meter for Spot-Checking Applications

Designed for industrial spot checking and field calibration hree models: accurate measurement ranges from -60 to +60 °C (-76 ... +140 °F) 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

NIST traceable (certificate

included)

he DM70 is fitted with the Vaisala DRYCAP' Sensor. he sensor provides reliable and high-performance dewpoint measurement with revolutionary long-term stability. he patented autocalibration procedure detects on-line possible measurement inaccuracies and automatically corrects dry-end drift in the calibration curve. hese advanced features provide a long calibration interval and low maintenance cost.

he meter is calibrated in the factory against internationally traceable standards and delivered with a calibration certiicate. he DM70 can also be sent to a Vaisala Service Center for a traceable recalibration.

he DM70 has a versatile and easy-to-use, menu-based user interface and a clear graphical LCD display with data­logger function. It can also be used as a tool for reading the output of fixed

Vaisala dewpoint transmitters, like the DMT242, DMT142 and DMT340.

he DM70 displays one to three parameters at a time, either numerically or graphically. Several humidity units can be selected. In addition, the DM70 includes conversion from gas pressure dewpoint to ambient pressure dewpoint. An analog output is also available.

he Vaisala DRYCAP' Hand-Held Dewpoint Meter DM70 measures dewpoint temperature accurately over a wide measurement range. he probe may be inserted directly into pressurized processes, and it responds rapidly from ambient to process conditions. he sensor withstands condensation and fully recovers from getting wet.

hree probe models, all with auto-calibration, are available. he A and B models are both general purpose probes. he A model is for dewpoint range from -40 to +60 °C T_d, and the B model for -60 to +20 °C T,. he C model

d

is specifically developed for SF₆ gas with a dewpoint range down to -50 °C T_d.

he B and C probe models have an additional Sensor Purge feature. he Sensor Purge heats and dries the sensor, making the response from ambient to dry conditions exceptionally fast. his facilitates rapid spot checking measurements in low dewpoints.

Ref. B210712en rev. A