Endress+Hauser Cerabar M PMC51 Operating Instructions Manual page 14

Installation
#
14
3.3.3 Seal for flange mounting
Fig. 10: Mounting the versions with a flange
1 Process isolating diaphragm
2 Seal
Warning!
The seal is not allowed to press against the process isolating diaphragm as this could affect the
measurement result.
3.3.4 Thermal insulation – PMP55
The PMP55 may only be insulated up to a certain height. The maximum permitted insulation height
is indicated on the devices and applies to an insulation material with a heat conductivity
 0.04 W/(m x K) and to the maximum permitted ambient and process temperature ( see table
below). The data were determined under the most critical application "quiescent air".
T
A
Fig. 11: Maximum permitted insulation height, here indicated on a PMP55 with a flange
Ambient temperature (T )
A
Process temperature (T )
P
➀
PMP55
70°C (158°F)
Max. 400°C (752°F), depending on the diaphragm seal filling oil used (see TI436PDE)
Cerabar M Analog
➁
P01-FMD7xxxx-11-xx-xx-xx-002
W
l 0.04 £
m K •
T
P
P01-PMx5xxxx-11-xx-xx-xx-010
Endress+Hauser