Cerabar M, Deltapilot M
Technical data
Hauser
89
14
Technical data
14.1 Pressure specifications
L
WARNING
The maximum pressure for the measuring device depends on the lowest-rated ele-
ment with regard to pressure (components are: process connection, optional mounted
parts or accessories).
‣
Only operate the measuring device within the prescribed limits of the components!
‣
MWP (maximum working pressure): The MWP is specified on the nameplate. This
value refers to a reference temperature of +20 °C (+68 °F) and may be applied to the
device for an unlimited time. Note temperature dependence of MWP. For flanges, refer
to the following standards for the permitted pressure values at higher temperatures:
EN 1092-1 (with regard to their stability/temperature property, the materials 1.4435
and 1.4404 are grouped together under EN 1092-1; the chemical composition of the
two materials can be identical.), ASME B 16.5a, JIS B 2220 (the latest version of the
standard applies in each case). MWP data that deviate from this are provided in the
relevant sections of the Technical Information.
‣
The test pressure corresponds to the overpressure limit (OPL) of the overall system.
This value refers to a reference temperature of +20 °C (+68 °F).
‣
The Pressure Equipment Directive (2014/68/EU) uses the abbreviation "PS". The abbre-
viation "PS" corresponds to the MWP (maximum working pressure) of the measuring
device.
‣
In the case of sensor range and process connections where the over pressure limit
(OPL) of the process connection is smaller than the nominal value of the sensor, the
device is set at the factory, at the very maximum, to the OPL value of the process con-
nection. If you want to use the entire sensor range, select a process connection with a
higher OPL value.
‣
Oxygen applications: In oxygen applications, the values for "p
max
and T
max
for oxygen
applications may not be exceeded.
‣
Devices with ceramic process membrane: Avoid steam hammering! Steam hammering
can cause zero point drift. Recommendation: Residue (such as condensation or drops of
water) can remain at the process membrane after CIP cleaning and lead to local steam
hammering if steam is introduced again immediately. In practice, drying the process
membrane (e.g., by blowing off excess moisture) has proven to be a successful way of
avoiding steam hammering.
14.1.1 Burst pressure
Device
Measuring range
Burst pressure
PMP51
400 mbar (6 psi) to 10 bar (150 psi)
100 bar (1
450 psi)
40 bar (600 psi)
250 bar (3
625 psi)
100 bar (1
500 psi)
1
000 bar (14
500 psi)
400 bar (6
000 psi)
2
000 bar (29
000 psi)
700 bar (10
500 psi)
2
800 bar (40
600 psi)
1)
PMP55 with mounted diaphragm seal system, PMC51 with ceramic membrane and the universal adapter
process connection are exceptions.
14.2 Additional technical data
For the technical data, see the Technical Information for Cerabar M TI00436P / Deltapilot
M TI00437P.
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