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Operators instructions
CombiPress, type PFMx
ATEX Gas nA
For ATEX nA zone 2 is approved without using zener barrier to separate the hazardous and safe area and must be installed in
accordance with prevailing guidelines for zone 0.
ATEX data:
Approval: Gas Zone 2
II 3 G, Ex nA II T5
Voltage drop
U
Disp
4,5 or 6,5 VDC
Temperature class T1…T5 -30 < T
amb
<65°C
Internal inductivity
L
i
<10 µH
Internal capacity
Ci
<15 nF
Maximum voltage
U
max
<35 VDC
Maximum current
I
max
<0,1 A
1 +
2 -
3
4
5
6
4…20 mA
Display without relay output
Display with relay output
4…20 mA
1 +
2 -
Relay 1
Relay 2
Programming the CombiPress w./w.o. DFON in ATEX area
Programming the CombiPress
and the CombiView, in hazardous area with the FlexProgrammer is not allowed, as the FlexPro-
grammer (and/or the PC) is not ATEX approved for use in hazardous area.
Follow below procedure to programme the instrument:
a
Disconnect mains from the 4…20 mA loop circuit
b
Disconnect the instrument from the circuit within the hazardous area
c
Uninstall the instrument and bring it to safe area
d
Connect the FlexProgrammer and perform the configuration session.
e
Re-install the instrument in the hazardous area
f
Connect the instrument to the circuit
g
Connect mains from the 4…20 mA loop circuit
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English
Operating Instructions: 11120948 03
