Wika S-20 Manuel d'utilisateur télécharger pdf (Page 13)

WIKA Safety manual pressure transmitter, model S-20

14082128.02 06/2014 GB/D/F/E

2.11 Decommissioning of the pressure transmitter

In accordance with chapters 9 and 10 of the model S-20 operating instructions.

WARNING!

Ensure instruments that have been taken out of service are not accidentally recommissioned (e.g.

through marking the instrument). After exchanging the pressure transmitter, a functional test of the entire

safety function (safety loop) should be initiated, in order to test whether the safety function of the system

is still guaranteed. Functional tests are intended to demonstrate the correct function of the whole safety-

related system, including all components (sensor, logic unit, actuator).

2.12 Corrective maintenance

Routine maintenance tasks are not required for the model S-20.

2.13 Performance level key gures

MTTF

: 546 years

Category: B

PL: b

: 20 years

2. Safety

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Wika S-20 Manuel d'utilisateur Page 13