Endress+Hauser Deltapilot M FMB51 - Page 14

Installation Cerabar M, Deltabar M, Deltapilot M / 4...20 mA HART
14 Endress+Hauser
3.3.3 Seal for flange mounting
P01-FMD7xxxx-11-xx-xx-xx-002
Fig. 11: Mounting the versions with a flange
1 Process isolating diaphragm
2Seal
#
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".
P01-PMx5xxxx-11-xx-xx-xx-010
Fig. 12: Maximum permitted insulation height, here indicated on a PMP55 with a flange
➁➀
l 0.04£
W
mK•
T
P
T
A
PMP55
Ambient temperature (T
A
) 70°C (158°F)
Process temperature (T
P
) Max. 400°C (752°F), depending on the diaphragm seal filling oil used (see
TI00436PEN)