Figure 15, Dsc74b, Figure 16 – Vaisala DMT143 User Manual
Page 31: Removing the leak screw
Chapter 4 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 29
In the basic operation of the DSC74B, the gas flows to the sensor from
the front and the outlet is on the side. To have the measurement done at
atmospheric pressure, the inlet and outlet are reversed. Then the reducing
parts supplied (G3/8" - G1/2" or G3/8" - G1/4") on the outlet side help to
protect the sensor from ambient humidity coming in.
DSC74B parts are:
- Sampling cell, thread G3/8"
- Connection part with a needle valve and an integrated leak screw
- Reducing Nipple (thread adapter), G3/8" - G1/2"
- Reducing Adapter (thread adapter), G3/8" - G1/4"
0510-032
Figure 15
DSC74B
where
1
=
Gas goes in
2
=
Gas comes out
0510-033
Figure 16
Removing the Leak Screw