Spirax Sarco RIM20, Installation And Maintenance Instructions Manual, Page: 46 / 132

IM-P198-05 MI Issue 2 46
Fig. 44
External 4-20 mA
input wiring - dc powered meter
Follow the above diagram to wire the external
4-20 mA input into the flowmeter using power
supplied to the input of a dc powered meter.
Option 2 Option 1
1 2 ! " # $ % ! " #
Ext. 4 20 mA
Input Device
+ d c PWR
d c PWR
dc power
dc common
d c powered meter only.
Fig. 46
Optional external contact
closure input wiring
Follow the above diagram to wire an external switch input into the flowmeter.
The meter is configured to have Option 1 used for the external input.
If the above switch is used to remotely reset the totalizer a pushbutton
switch with a momentary contact closure is recommended.
Ac units only.
Meter provided
Dc power
Ac units only.
Meter provided
Dc power
Fig. 45
External 4-20 mA
input wiring - ac powered meter
Follow the above diagram to wire the external
4-20 mA input into the flowmeter using power
from the 24 Vdc output of an ac powered meter.
Option 1
1 2 3 4 5
Option 2
1 2 3 4 5
Option 1
1 2 3 4 5
Option 2
1 2 3 4 5
Option 1
1 2 3 4 5
Option 2
1 2 3 4 5
3.29 Optional external contact closure input wiring
ac units only.
Meter provided
dc power
Ext. 4-20 mA
input device
Ext. 4-20 mA
input device
+ dc Pwr
dc Pwr
dc power
dc common
dc powered meter only
+24 Vdc out
-24 Vdc out