Instruments with atex approval – WIKA PGT43.100 User Manual
Page 16
GB
Conformity specifications
For instruments with ATEX approval the following conformity specifications,
which differ slightly from the specifications indicated in the data sheet, are
applicable:
Power supply:
14 … 0 DC V
Short circuit rating: I
max
≤ 100 mA
Power:
U
max
≤ 1000 mW
Internal capacitance: C
i
≤ 1 nF
Internal inductance: negligible
Safety instructions for installation
Observe the installation and safety instructions included in
the operating instructions
≤Install the instruments in accordance with the instructions of
the manufacturer and the applicable standards and regula-
tions
≤Seal the cable entries using approved cable glands so that
they are leak-tight
≤Only use cable glands which possess an ATEX Ex e appro-
val and have an ingress protection of at least IP 65.
Fix the connection cable securely
≤If intrinsically safe equipment is installed in hazardous areas,
it must only be operated as part of a certified intrinsically
safe circuit.
Transmitter supply isolators
When using ATEX instruments, an Ex transmitter supply isolator is an absolute
requirement.
We recommend Model KFD-STC4-Ex1 with a power supply of 0 ... 5 DC V,
installation on standard rail, our order number 4168
11
97
64 05/
009 GB/D/F/E
WIKA Operating Instructions intelliGAUGE family
16
8. Instruments with ATEX approval