Wiring; Overall Wiring Arrangement - Michell Instruments Liquidew I.S. User Manual

INSTALLATION
2.4

Wiring

2.4.1

Overall Wiring Arrangement

EASIDEW PRO I.S.
/ LIQUIDEW I.S.
DEW POINT Tx
4
3
2
1
PRESSURE /
TEMPERATURE
Tx (OPTIONAL)
-
+
HAZARDOUS AREA
12
These tasks are to be undertaken only by suitably qualified
personnel. All the connections to the rear panel are electrical
connections. Exercise due caution, particularly when
connecting to external alarm circuits which could be at high
90-264 V AC
POWER SUPPLY
(BY OTHERS)
18-28 V DC
POWER SUPPLY
(BY OTHERS)
Figure 7 Overall Wiring Arrangement
Liquidew I.S. User Manual
potential.
mA+
SCN
+V
mA+
SCN
+V
N/O
ALARM 3
N/C
COM
ALARM 4
N/O
N/O
ALARM 1
N/C
COM
ALARM 2
N/O
OUTPUT 1
mA1
OUTPUT 2
mA2
0V
OUTPUT 3
mA3
SCN
GND
5
A
RS 485
3
B
2
L
N
E
+V
24V
0V
0V
GND
SAFE AREA
97092 Issue 6, July 2022
CONTROL UNIT
SENSOR
INPUTS
ALARMS
OUTPUTS
COMMS
POWER
SOCKET
OR
POWER
CONNECTOR