Download Vaisala DRYCAP DMT346 User`s guide

Chapter 2 ___________________________________________________________ Product Overview
CHAPTER 2
PRODUCT OVERVIEW
This chapter introduces the features and advantages of Vaisala
DRYCAP® Dewpoint Transmitter DMT345 and DMT346.
Introduction to Vaisala DRYCAP® Dewpoint
Transmitters DMT345 and DMT346
Vaisala DRYCAP® Dewpoint Transmitters DMT345 and DMT346
incorporate the advanced Vaisala DRYCAP® technology, which
enables reliable and accurate dewpoint measurement. Both
transmitters also feature the AutoCal function which provides
excellent long term stability of the measurement.
Vaisala DRYCAP® Dewpoint Transmitter DMT345 is designed for
measurement of relative humidity in temperatures up to 180 °C. The
transmitter outputs dewpoint/frostpoint (Td/f), mixing ratio (x),
volume concentration (ppm), relative humidity (RH) and temperature
(T).
Vaisala DRYCAP® Dewpoint Transmitter DMT346 is a highperformance instrument for measurement of dewpoint and mixing
ratio in temperatures up to 350 °C.
DMT346 also outputs sensor saturation rate (SSR) and temperature
(TS = TSensor) of the cooled Vaisala DRYCAP® sensor. Because the
sensor is cooled, these values do not represent true process conditions,
hence they cannot be used for process control. Nevertheless, they
provide a valuable aid for calibration and for checking the cooling
effect.
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