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Installation
Ex p Control unit
APEX
px
Page 32 of 96
01-37A2-7D0001_px_Manual_Exp-Control-Unit_20210923_0_en.docx
Rev. 0
Pneumatic Connections
Pneumatic connections APEX, type 07-37A2-2211/*520
Installation inside Ex p equipment
When installing the controller inside the pressurized equipment,
the atmospheric connection must be routed to the outside.
Please use the assembly kit for the atmospheric connection here.
The adaption pressure measurement card comes
with two quick hose connections as standard.
Hose outer diameter 4mm.
Connection
Description
H
High (H), (internal pressure)
A
Atmosphere (A)
L
Low (L), (pressure after orifice)
Pneumatic connections pressure outlet module, type 17-51P3-1*03
The related pressure outlet module (purge gas outlet) has a hose
quick connector for 4mm diameter on the back.
This connection is to be connected to the Ex p control unit at the
measuring port "L".
Typical installations
DANGER
INCORRECT ARRANGEMENT OF THE SYSTEM COMPONENTS ON THE EX P
OPERATING EQUIPMENT
The installation specifications from IEC / EN 60079-2 must be observed.
Light or heavy explosive gases must be observed.
Check arrangement