2.4 Connect the Transducer
2.4.1 Cable Type
Determine the distance between the transducer’s installed location and the DFI 9000. If the distance is less than
30 feet, use a four-wire hookup. If it is greater than 30 feet, use a six-wire hookup and the ”sense” feature.
Transducers with integral cables generally have four wires, designated:
+ Excitation
- Excitation
+ Signal (or + Output)
- Signal (or – Output)
For long six-wire cables, the additional two wires are used for ”sense” feature and are designated:
+
Sense
-
Sense
The “sense” feature reduces the effect of signal voltage loss over a long cable, increasing display accuracy. The
“sense” feature is only needed for cables longer than 30 feet.
2.4.2 Connection
Use the transducer’s integral cable if available. If the transducer is not equipped with an integral cable, wire your
own cable as follows:
•
Four –wire hookup (Figure 1)-Disable the “sense” feature by soldering two small wires inside the mating
connector to jumper:
+ Excitation
(pin A) to
+ Sense
(pin B)
- Excitation
(pin C) to
– Sense
(pin D)
DFI 9000 MATING
CONNECTOR
Six-wire hookup (Figure 2)- Jumpers are not needed in this configuration.
DFI 9000 MATING
CONNECTOR
2.5 Turn On the Unit
Flip the on/off toggle switch on the front panel to on and allow the DFI 9000 to stabilize for a few seconds.
1. Make sure that no load is applied to the transducer, then press and hold the
shunt cal
button.
2. If the number on the display drifts, the unit is not yet stable.
3. Release the shunt cal button and try again in a few seconds.
CF12 DFI 9000
2
Rev. C May 2004
