Endress+Hauser Proline Prosonic Flow P 500 Functional Safety Manual page 28

Use in protective systems
5.3.2 Proof testing the sensor subsystem
If there are no operator-specific requirements for the proof test, the following alternative is
available for testing the sensor subsystem
variable used for the safety function.
1)
PTC Proof testing
48 % Device restart and testing of current output 1
98 % Testing with a secondary standard
99 % Testing with a secondary standard and testing of current output 1
1) Proof Test Coverage
Other recommendations
It is advisable to perform a visual inspection on site.
‣
As part of the visual inspection of the transmitter, ensure that all of the electronics
compartment cover seals and cable entries are providing adequate sealing.
2) Under IEC 61508, the sensor is synonymous with the entire flowmeter.
28
2)
depending on the "volume flow" measured
Proline Prosonic Flow P 500 HART
1 →  29
3 →  33
4 →  34
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