About this document Cerabar PMP21 IO-Link
6 Endress+Hauser
1.4 Terms and abbreviations
URL OPLMWP
LRL
0
p
LRV
URV
1
2
3
4
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1 OPL: The OPL (over pressure limit = sensor overload limit) for the measuring device depends on the lowest-
rated element, with regard to pressure, of the selected components, i.e. the process connection has to be taken
into consideration in addition to the measuring cell. Observe pressure-temperature dependency. The OPL may
only be applied for a short period of time.
2 MWP: The MWP (maximum working pressure) for the sensors depends on the lowest-rated element, with
regard to pressure, of the selected components, i.e. the process connection has to be taken into consideration
in addition to the measuring cell. Observe pressure-temperature dependency. The maximum working pressure
may be applied at the device for an unlimited period. The MWP can be found on the nameplate.
3 The maximum sensor measuring range corresponds to the span between the LRL and URL. This sensor
measuring range is equivalent to the maximum calibratable/adjustable span.
4 The calibrated/adjusted span corresponds to the span between the LRV and URV. Factory setting: 0 to URL.
Other calibrated spans can be ordered as customized spans.
p Pressure
LRL Lower range limit
URL Upper range limit
LRV Lower range value
URV Upper range value
TD Turn down Example - see the following section.
The turn down is preset in the factory and can be changed.
1.5 Turn down calculation
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1 Calibrated/adjusted span
2 Zero point-based span
3 Upper range limit
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