Ex P Safety Equipment - Siemens SIPROCESS GA700 Compact Operating Instructions
Continuous gas analysis
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Also See for SIPROCESS GA700:
- Operating manual (306 pages) ,
- Operating instructions manual (224 pages) ,
- Compact operating instructions (208 pages)
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A.1.2.1
Ex p safety equipment
Pneumatic connections of the Ex p control system (example)
A
Ex p controller F870S
B
Ex power relay SR853
C
Ex interface relay SR852, 16-pin
D
Proportional valve
E
Pressure regulating valve for purg-
ing gas with gauge
①
Power connection; fusing 16 A
②
Connection to Ex p controller F870S; conductor cross-section 8 mm, max. length 10 m
③
Purging gas inlet
④
Purging gas outlet
⑤
Connection from Ex p controller F870S; conductor cross-section 8 mm, max. length 10 m
⑥
Purging gas connection; supply pressure 2.5 ... 5 bar (rel.)
⑦
Connection from and to Ex interface relay SR852
⑧
Exhaust air outlet. If appropriate connection of a 1" line, max. length 20 m
Figure A-2
Gas path of the Ex p safety equipment, Gönnheimer Elektronik GmbH
Connection information
The supply pressure has to be sufficiently large (2.5 ... 5 bar).
The supply line before the pressure regulating valve has to be dimensioned so that the line
pressure in the inlet does not drop below 2.5 bar during pre-purging (sufficiently large
diameter of the supply line).
If purging gas lines are used with a smaller diameter or longer length than specified,
pressure builds up in the Ex p enclosure that lies outside the setpoint range specified in the
Ex p control system.
Devices in explosion-proof design
Compact Operating Instructions, 11/2019, A5E35134047-04
F
Power connection
G
Analyzer module 1 (AM1)
H
Analyzer module 2 (AM2)
I
Flame arresters
J
Signal cable connection
Appendix A
A.1 Ex px safety equipment
113
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