Setra System GCT-225 - Manual (Page 3)

3
Diagram 1
CONNECTOR PIN WIRING FOR VOLTAGE OUTPUT TRANSDUCERS
CABLE BAYONET
CONNECTION WIRE PIN
+EXCITATION: Connect to VDC Power Supply RED A
+OUTPUT: Connect to Controller or Monitor GREEN B
-OUTPUT: Connect to Controller or Monitor WHITE C
-EXCITATION: Connect to Return of Power Supply BLACK D
CASE GND: Connect to System or Earth Ground SHIELDING SHELL
EXCITATION: 10-30 VDC FOR 0.2 TO 5.2 VDC and 0 to 5 VDC
13-30 VDC FOR 0.2 TO 10.2 VDC and 0 to 10 VDC
Note: Model GCT225 can be wired as a 3-
wire device by connecting – OUTPUT
and –EXCITATION and drain wire to a
common ground. However, accuracy
will be reduced due to increase in
resistance.
2.3 Pressure Fitting
Mounting — Model GCT225 transducer can be installed with a male or female
#4 Face Seal Fitting, 1/4” NPT male or female fitting, or a 1/4” tube stub.
When installing units with Face Seal Fittings:
a.) Align piping system to transducer connections
b.) Hand tighten nuts
c.) Torque nuts by placing wrenches on nuts only (or on nut and
wrench flats of transducer body for units fixed male face seals).
Never hold the unit by the electronic housing during installation.
2.4 Venting
Model GCT225 Transducer is vented through the swivel cover.
3.0 ELECTRICAL INSTALLATION
3.1 Voltage Output Units
The Model GCT225 voltage output transducer is supplied with a 6ft. multicon-
ductor cable or a Bayonet style connector. See Diagram 1 & 2 for wiring
diagrams.
D A
B C
(+ exc.)
(common)
(common)
(+ out)
(shield)
Red + Excitation
Black - Excitation
Monitor or
Control
Device
+
-
Shield
Green
+ Out
White
- Out
Diagram 2