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3 Product description
WIKA Operating Instructions - Process pressure transmitter IPT-2x
4
3
2
1
Fig. 5: Configuration of the ceramic/metallic measuring cell
1 Process diaphragm
2 Isolating liquid
3 FeNi adapter
4 Ceramic-capacitive measuring cell
Relative pressure: the measuring cell is open to the atmosphere.
The ambient pressure is detected in the measuring cell and compen-
sated. It thus has no influence on the measured value.
Absolute pressure: the measuring cell contains vacuum and is
encapsulated. The ambient pressure is not compensated and does
hence influence the measured value.
The measuring system is completely welded and thus sealed against
the process.
The process fitting is sealed against the process by a suitable seal. It
must be provided by the customer, depending on the process fitting
also included in the scope of delivery, see chapter "
Technical data
",
"
Materials and weights
".
3.3 Supplementary cleaning procedures
The IPT-2x is also available in the version "
Oil, grease and silicone-
free
". These instruments have passed through a special cleaning
procedure to remove oil, grease and paint-wetting impairment sub-
stances (PWIS).
The cleaning is carried out on all wetted parts as well as on surfaces
accessible from outside. To keep the purity level, the instruments are
immediately packed in plastic foil after the cleaning process. The
purity level remains as long as the instrument is kept in the closed
original packaging.
Caution:
The IPT-2x in this version may not be used in oxygen applications.
For this purpose, instruments are available in the special version "
Oil,
grease and silicone-free for oxygen applications
".
Pressure types
Seal concept