WIKA DPGS40TA Mode D'emploi page 12

2. Safety
2.3.11 Commissioning
All applications
The operability of the switching function of the DPGS40TA.100-xxS differential
pressure gauge must be tested both during commissioning and at appropriate
EN
intervals. Both the nature of the testing as well as the chosen intervals are the
responsibility of the user.
Additional for applications with low demand rate
The interval for the proof test usually conforms to the PFD
the standard. Normally the proof test takes place every year, see certificates
V 495.01/15 and V 405.02/15.
2.3.12 Proof test of the safety function
Through a test of the entire safety function, check whether the switch is operating
correctly.
2.3.13 Information on the determination of safety-relevant parameters
The failure rates of the instruments were determined through the use of statis-
tical methods in accordance with IEC 61508 on the basis of a type test for the
DPGS40TA.100-xxS.
The instrument is designed for applications with low or high demand rates.
2.3.14 Instrument-specific safety-related parameters
The safety-related parameters for the operation in safety integrated systems in
accordance with IEC 61508 and IEC 61511 are to be taken from the certificate
V 495.01/15, see Annex 3 of these operating instructions.
The safety-related parameters for the operation in safety integrated systems in
accordance with ISO 13849 are to be taken from the certificate V 495.02/15, see
Annex 3 of these operating instructions.
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WARNING!
The maximum operating life of a safety-related system is 5 years,
plus a 1.5 year reserve. Any longer operating life is the responsibility
of the operator.
WIKA operating instructions DPGS40TA with component testing
value given in
avg