Siemens SITRANS P500, Operating Instructions Manual, Page: 29 / 238

Description
3.5 Functional principle
SITRANS P500 with HART
Operating Instructions, 12/2014, A5E02344528-09
29
3.5.3 Remote seals
Product description
● A remote seal measuring system comprises the following elements:
–
Remote seal
– Transmission line, e.g. capillary line
– Pressure transmitter.
Note
Malfunction of the remote seal measuring system
If you separate the components of the remote seal measuring system, this results in
malfunctioning of the system.
Do not separate the components under any circumstances.
● The measuring system based on a hydraulic principle is used to transfer pressure.
● The capillary line and the remote seal diaphragm are the most sensitive components in
the remote seal measuring system. The material thickness of the remote seal diaphragm
is only ∼ 0.1 mm.
● The smallest of leakages in the transmission system leads to the loss of transmission
fluid.
● The loss of transmission fluid results in inaccuracies in the measurement and failure of
the measuring system.
● In order to avoid leaks and measuring errors, please observe the installation and
maintenance instructions in addition to the safety notes.