Endress+Hauser Cerabar PMC11, Техническая информация

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Cerabar PMC11, PMC21, PMP11, PMP21
28 Hauser
Pressure specifications
L
WARNING
The maximum pressure for the measuring device depends on the lowest-rated element with
regard to pressure.
‣
For pressure specifications, see the "Measuring range" section and the "Mechanical construction"
section.
‣
The Pressure Equipment Directive (2014/68/EU) uses the abbreviation "PS". The abbreviation "PS"
corresponds to the MWP (maximum working pressure) of the measuring device.
‣
MWP (maximum working pressure): The MWP (maximum working pressure) is specified on the
nameplate. This value is based on a reference temperature of +20 °C (+68 °F) and may be applied
to the device for an unlimited period of time. Observe the temperature dependency of the MWP.
‣
OPL (over pressure limit): The test pressure corresponds to the over pressure limit of the sensor
and may only be applied temporarily to ensure that the measurement is within the specifications
and no permanent damage develops. 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
connection. 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 isolating diaphragm: avoid steam hammering! Steam hammering
can cause zero point drifts. Recommendation: Residue (water droplets or condensation) may
remain on the process isolating diaphragm following CIP cleaning and can result in local steam
hammering the next time steam cleaning takes place. In practice, drying the process isolating
diaphragm (e.g. by blowing) has proved to prevent steam hammering.