Vaisala DM500 - Manual (Page 33)

Chapter 5 ________________________________________________ Information On Optional Parts
VAISALA _______________________________________________________________________ 31
CHAPTER 5
INFORMATION ON OPTIONAL PARTS
This chapter provides you with information on the optional parts of
the DM500.
The following optional parts are
available for the DM500:
- Heated gas tubes (internal)
- External temperature sensor
- Sampling pump
- Pressure sensor
- Flowmeter
DEWCAP
dewpoint sensor
gas inlet
high pressure
gas outlet
DMP501 internal ONV
(output needle valve)
adjusted from
front panel
optional internal
flow meter
optional pump
optional pressure sensor
Optional Heated Gas Tubes
Heated gas tubes shall be used if the measured dewpoint is high, close
or above ambient temperature. It is recommended to use heated gas
tubes already for dewpoints 5 ºC (9 ºF) below ambient temperature.
Internal gas tubes
The optional heated gas tubes keep the internal gas tubes and sensor
chamber temperature above 60ºC.