13
Operating instructions for KME flow meter for compressed air and gases
Make sure that the direction arrow on the transmitter units corresponds to the flow direction in
the pipeline. Failure to comply with this may lead to additional measurement error of ±3 % of the
measured value.
Complete the mounting by tightening the mounting screws with max. torque 6 Nm using the 4
mm hex key included in the scope of supply (fig. 8).
Fig. 8
Tighten mounting screws
4 electrical installation
The electrical installation of the KME shall be performed by qualified staff only. Observe all applicable
national and international requirements for the installation of electrical devices as well as power supply
according to EN 50178, SELV, PELV.
4.1 Connection diagram
Fig. 9
M12 connector
M12 4-pin connector according to
IEC 61076-2-101
Analogue/switch/
pulse output
1...V+
2...Output 1
3...GND
4...Output 2
Modbus RTU
(projected)
1...V+
2...RS485 A (=D+)
3...GND
4...RS485 B (=D-)
M-Bus / Meter bus
(projected)
1...V+
2...M-Bus
3...GND
4...M-Bus
1
2
3
4
M12 connector
on the transmitter
