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Functional safety
7.7 Add-on parts
SITRANS P500 with HART
Operating Instructions, 12/2014, A5E02344528-09
175
Electronics and measuring cell
The safety function of the pressure transmitter is ensured only if you use the electronics,
measuring cell, display and connection board delivered by the factory. These components
cannot be replaced.
7.7
Add-on parts
This chapter contains safety information for add-on parts.
WARNING
Add-on parts unsuitable for process medium
Danger of injury or damage to device.
If the process medium is not suitable for the parts which come into contact with it, hot
and/or toxic or corrosive substances could be released.
•
Refer to the information in the chapter "Technical data (Page 197)".
•
Make sure that the add-on parts are suitable for the corresponding application with
regard to materials, temperature of process medium, and pressure.
7.7.1
Checking a device with add-on pneumatic block
Procedure
1.
Check the connection between the pressure transmitter and pneumatic block and
between the pneumatic block and pipelines in the plant for leaks.
2.
Observe the safety information and specifications in chapter Install (Page 31).
3.
Check the following valves for correct positioning and absence of leaks:
–
Process valves
–
Stabilizing valve
–
Vent valves
–
Blowout valves or plugs
4.
Observe the safety information and specifications in chapter Commissioning (Page 177).
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