USER'S GUIDE____________________________________________________________________
48 __________________________________________________________________ M210704EN-F
Mounting the Probe Directly to the
Process
Select a point, which gives a true picture of the process. The transmitter
can be installed directly in the process wall, especially if the pressure of
the process is 1 bar (atmospheric processes).
It may be necessary to use the sampling cell if the process (for example a
pipe) is too small for the DMT348 probe. Furthermore, if the process is
very hot (>80 °C) or particularly dirty, the probe is installed in a
sampling cell behind a cooling coil and/or filter. In this case, the ambient
temperature must be at least 10 °C warmer than the process dewpoint in
order to avoid condensation in the sample tubing.
0503-016
Figure 32
DM240FA with Probe
The numbers refer to Figure 32 above:
1 =
measured
gas
2 =
probe
3
=
DM240FA flange (thread G1/2" ISO)
4
=
use R1/2" ISO fitting body for DMT348 probe with DM240FA
flange
5
=
recommended additional hole (plugged) for Td field check
reference measurement probe (for example, Vaisala DM70)
If the probe is installed in process pipes where the water is likely to
collect at the measurement point, take care to install the probe so that it
will not be immersed in water.
