14
4 Mounting
WIKA Operating Instructions - Differential pressure transmitter DPT-20
To maintain the housing protection, make sure that the housing lid is
closed during operation and locked, if necessary.
The ventilation for the electronics housing is realised via a filter ele
-
ment in the vicinity of the cable glands.
1
2
3
6
6
6
6
6
5
4
Fig. 8: Position of the filter element - non-Ex, Ex-ia and Ex-d-ia version
1 Plastic, stainless steel single chamber (precision casting)
2 Aluminium - single chamber
3 Stainless steel single chamber (electropolished)
4 Plastic double chamber
5 Aluminium, stainless steel double chamber housing (precision casting)
6 Filter element
Information:
Make sure that the filter element is always free of buildup during op
-
eration. A high-pressure cleaner may not be used for cleaning.
For better readability of the display or access to the wiring, the elec
-
tronics housing can be rotated by 330°. A stop prevents the housing
from being turned too far.
Depending on the version and housing material, the locking screw on
the neck of the housing must be slightly loosened. The housing can
then be turned to the correct position. As soon as the requested posi
-
tion is reached, tighten the locking screw.
It is recommended to protect the device at the application site against
lateral forces, e.g. vibrations, by means of a suitable measuring instru
-
ment holder. This applies especially for device versions with a plastic
process connection, e.g. with G½ thread.
If there is strong vibration at the mounting location, the instrument
version with external housing should be used. See chapter "
External
housing
".
Ventilation
Turning the housing
Mounting at the applica-
tion site
