ROTRONIC ATEX - Manual (Page 12)

12
3. The possibilities of use and the electric installation
The intrinsically safe transmitter can be configured for the following three applications:
1. Transmitter for the combined measurement of relative
humidity and temperature.
Signal working up by the transmitter type HgroFlex.
2. Transmitter for the measurement of relative humidity.
Two wire system,4...20mA
3. Transmitter for the measurement of temperature.
Two wire system,4...20mA
The transmitters are factory programmed for the use as a
humidity and temperature transmitter. The configuration can
be changed by jumpers on the printed circuit.
= Jumper position
Jumper configuration according to block diagram
3.1 Combined transmitter for humidity and temperature measurement (Factory setting)
Signal working up and supply via Zener barrier by the transmitter HygroFlex.
Digtal DIO signal
If other than the Zener barriers Pepperl & Fuchs
Z7222 resp. Z788.H are used, the terminal numbers
may be different!
- Max. cable length between intrinsically safe transmitter
and HygroFlex = 200m
- Cable for the connection of the intrinsically safe
transmitter with the Zener barrier: ET-7018
- Cable for the connection of the Zener barrier with the
HygroFlex: Type AC1617/ZBXXX
- Connection and type of Zener barrier to be used according
to block diagram (Peppel&Fuchs Z722)
AGRO- screw fitting
Schematic diagram
Ex zone safe zone
intrinsically
safe transmitter Zener barrier Z722
Cable
AC1617
green
grey
Digital
DIO (%Rh +°C)
Analogue
%Rh
°C
Measurement
of humidity
and temperature
Flange mounting for duct and cable probe
Probe mounting as with duct type, variant B
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