5 Technical Data
gas-net F1
Page 5-2
Board Array
The board array depends on the tasks of the device and type of the input
signals. The maximum number of boards depends on the housing size:
Housings with a 1/3 mounting width accommodate up to four process boards
whereas housings with a 1/2 mounting width accommodate up to seven process
boards.
The following board types are currently available:
EXMFE5 input board:
- Three pulse or message inputs [EEx ib] IIC. When being used as pulse
input, the board is suitable for the connection of LF and HF pulsers similar
to DIN 19234 for gas meters, with max. 10 kHz; automatic level adaptation
by channel. The first channel is also suitable for connecting an encoder
totalizer.
- Temperature sensor input for a PT100 in 4-wire technique; [EEx ib] IIC; the
maximum measuring error is ± 0.05 % of the measurement in a range of -
10 to +60°C and at an ambient temperature of 0 to 40°C.
- Measuring sensor input from 4 to 20 mA; [EEx ib] IIC; the maximum
measuring error is ± 0.05 % of the measurement in a range of 4 to 20 mA
and at an ambient temperature of 0 to 40°C.
This channel can alternatively be used for the connection of up to 4
measuring sensors with HART interfaces (multi-drop).
EXDE6 input board:
Six pulse or message inputs [EEx ib] IIC. When being used as pulse input,
the board is suitable for connecting NF and HF pulsers similar to DIN 19234
for gas meters, with max. 5 kHz; automatic level adaptation per channel.
The first channel is also suitable for connecting an encoder totalizer.
MSER2 process board:
- Two serial interfaces for one protocol channel each.
- Each interface may be configured to RS232, RS485 or RS422 by a suitable
assignment of the interface terminals.
- Implemented protocols: Modbus RTU, Modbus ASCII, Siemens 3964R,
Q.Sonic ultrasonic gas meter protocol of Elster. Furthermore, it is possible
to connect a FLOWSIC ultrasonic gas meter of SICK/MAIHAK or a GPS
receiver for time synchronization.
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