Microsensor MPM480 Operation Manual page 14

4mA～20mADC circuit when operating or adjusting.
4.4.2 The Connection between Indicator and Transmitter
a) The selected indicator could only be connected serially to the plug
connection transmitter with 2-wire, 4mA~20mA DC output.
b) Indicator Installation
1) The indicator electric interface is compatible with plug and
transmitter socket interfaces. Four
jacks could match four pins.
2) Mount the matched rectangle-ring to
the indicator jack side, and then
connect
transmitter socket pins.
3) Turn-on the fixed nut on the indicator
pins side and take out the core. A cross bolt could be seen.
Screw down the bolt with cross screwdriver and put in the core.
Then screw down the fixed nut. Caution: take out or put in
slightly lest snap the cable; there is an O-ring on the core, be
sure the O-ring the same as the pre-mounting situation.
4) Mount the rectangle-ring on the plug, and match the plug to
the indicator pins side. Then screw down the central bolt on
the top of the plug. Be sure the rectangle-ring is mounted
suitably and correctly during the operation.
4.5 Ex-proof Transmitter's Electric Connection
the indicator jacks with
12
Fig. 8