0 electrical installation – Setra System Model 223 User Manual

Page 3

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 with fixed male face seals) Never hold the
unit by the electronics housing during installation.

2.4 Venting

Model 223 transducers are vented through the electronics housing.

3.0 ELECTRICAL INSTALLATION

3.1 Voltage Output Units

The Model 223 voltage output transducer is supplied with a 6ft. multiconductor
cable or Bayonet style connector. The voltage output is either 5 VDC FSO or
10 VDC FSO. Diagram 1 shows electrical connection wiring for voltage
output transducers, and the excitation required.

Note:

Model 223 can be wired as a 3-wire device by connecting
– OUTPUT and –EXCITATION and drain wire to a common ground.
However, accuracy may be reduced due to increase in resistance.

3.2 Current Output Units

The Model 223 is a two-wire loop-powered 4 to 20mA current output unit and
delivers rated current into any external load of 0-800 ohms. The Model 223 is
available with 6ft. of multiconductor cable or Bayonet style connector. Diagram
2 shows electrical connection wiring for current output transducers.

The power supply must be a DC voltage source with a voltage range between
10 VDC and 30 VDC measured between the + and - terminals. The unit is
calibrated at the factory with a 24 VDC loop supply voltage and a 250 ohm load.

Diagram 2

CONNECTOR PIN WIRING FOR CURRENT OUTPUT TRANSDUCERS

Diagram 1

and

w/N1 option, see Notes 2 and 3.)

(

CONNECTOR PIN WIRING FOR VOLTAGE OUTPUT TRANSDUCERS

CABLE

BAYONET

CONNECTION

WIRE

+ EXCITATION

RED

+ OUTPUT

GREEN

– OUTPUT

WHITE

– EXCITATION

BLACK

CASE GND

DRAIN

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