Vaisala DRYCAP DMT340 SERIES Guide de l'utilisateur télécharger pdf (Page 37)

Chapter 3 _______________________________________________________________ Installation

VAISALA _______________________________________________________________________ 37

DMT342 Small-size Flanged Probe for

Use with Sampling Cell

The DMT342 probe is a small pressure-tight probe equipped with

installation flange. When sampling in pressurized processes, the

sampling cell HMP302SC is available as an optional accessory. It may be

necessary to use the sampling cell if the process (for example a pipe) is

too small for the DMT342 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.

0503-018

Figure 19 DMT342 Installation (without the Sampling Cell)

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Vaisala DRYCAP DMT340 SERIES Guide de l'utilisateur Page 37