Endress+Hauser Ceraphant PTP31B, Руководство по эксплуатации

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Ceraphant PTC31B, PTP31B, PTP33B IO-Link Technical data
Hauser 89
17.6.3 Pressure specifications
L
WARNING
The maximum pressure for the measuring device depends on the lowest-rated
element with regard to pressure.
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For pressure specifications, see the "Measuring range" section and "Mechanical
construction" section in the Technical Information.
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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.
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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.
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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.
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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.