Industrial Scientific OLDHAM 300 Series, Operating And Maintenance Manual

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9
d) Connection of a 2-wire 4-20mA sensor to a non-INDUSTRIAL SCIENTIFIC controller and to
an internal power supply.
(1) 15<VCC<32V Max I = 30 mA
e) Connection of two CEX 300-type EXPLO sensors to the same measuring line
(1) and (2) Check to ensure that terminals 1 and 4 are not connected
This only applies when the 2 sensors are located in the same room, protecting the same installation.
Control
unit
« other»
(+)
(1)
signal
ALIM
1
2
3
Detector
-
+
24 Vcc
Cable 4 wires
(2)
Cable 3 wires
CONTROL
UNIT
1
2
3
1
2
3
1 2 3 4
4 3 2 1
Sensor 2
Detector CEX 300 Nb1
Detector CEX 300 Nb 2
Junction Box
Ref. 6313539
Sensor 1
1
2
3
4
1
2
3
4
(1)