Make sure there is sufficient flow of gas to the sensor (for example, 1 l/min) to give a
representative sample.
To simulate the effect of pressure change to dew point, you can use the Vaisala Humidity
Calculator at:
www.vaisala.com/humiditycalculator
.
4.6 Sampling Accessories
4.6.1 DMT242SC Sampling Cell
The DMT242SC is a basic sampling cell with only the main sampling cell body. The inlet and
outlet are female threaded sample connectors (inlet G3/8", outlet G1/4" ISO).
The DMT242SC is suitable for users requiring only a sampling cell to fit the transmitter into and
doing further assembly (piping into inlet and outlet, valves, possible flow meter) by
themselves.
4.6.2 DMT242SC2 Sampling Cell with Swagelok Connectors
The DMT242SC2 is similar to DMT242SC, but connections are made easy. The sampling cell
includes welded swagelok connectors at both the inlet and outlet that fit directly to 1/4"
tubing.
To fit 6 mm tubing to the connectors, an adapter such as Swagelok
â
Reducer SS-6M0-R-4
(not supplied by Vaisala) can be used.
DMT242SC2 is the suitable choice in, for example, plastics drying systems, where the
measurement is made by tapping off the dryer system and bringing a small air stream to the
sensor.
The Swagelok connectors of DMT242SC2 easily connect to a cooling coil or tubing providing
the essential function of cooling the dry air to ambient temperature before it reaches the
sensor.
DMT143 User Guide
M211435EN-J
28
Summary of Contents for DRYCAP DMT143
Page 1: ...M211435EN J User Guide Vaisala DRYCAP Dew Point Transmitter DMT143...
Page 85: ...Appendix A Modbus Reference 83...
Page 86: ...DMT143 User Guide M211435EN J 84...
Page 88: ...DMT143 User Guide M211435EN J 86...
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Page 90: ...www vaisala com...
