Vaisala DMT143 - Manual (Page 29)

Chapter 4 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 27
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.
0801-069
Figure 13 Sampling Cells DMT242SC2 (left) and DMT242SC
(right)
where
1 = Male pipe welded connector Swagelok 1/4"
2 = G1/2"
3 = G1/4"
4 = G3/8"
DSC74 Sampling Cell with Quick
Connector and Leak Screw
The DSC74 has been designed especially for compressed air lines. The
sampling cell contains an adjustable leak screw that allows keeping up
the pipeline pressure at the sensor. The leak screw is opened and closed
with a screwdriver. The leak screw should be 1/2 turn open. This can be
verified by first closing the leak screw, then turning 1/2 turn to open it.
Then the air coming out will make a barely audible little hiss and it can
be lightly felt when putting a hand in front of the air stream.
NOTE Do not open the leak screw more than 1/2 turn to avoid reducing the
pressure in the sampling cell.
The DSC74 comes with a quick connector that fits to industry standard
compressed air line connectors (suitable for type D, Quick08, NIP08).
This allows for easy installation and detachment of the dewpoint
transmitter without having to shut down the process. Alternative ways to
connect are through the two different thread adapters (G3/8" to G1/2"
and G3/8" to G1/4" ISO) that are supplied with each DSC74 unit.