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RT8A Thermometer
Installation Guide
Fig. 12 Thermometer, power supply and indicator current loop
The thermometer, power supply and indicator are linked together on a current
loop.
Note:
the indicator in the
negative
conductor as shown in Fig. 12.
-
+
-
+
RT8A Thermometer
Indicator
(Note: Indicator must be installed
in the negative connector)
Vo
VR1
N
E
L
AC Supply
SW1
90/130
180/260
Power Supply Unit
Output
13
12
11
Alarms
(optional)
Thermometer
Drive
RTN
+
-
Power supply
24V d.c./115V a.c./230V a.c.
Fig. 13 Thermometer, power supply and indicator electrical connections