GE UTX878 Ultrasonic, User Manual

Page: 17 / 103

March 2004
1-8 Installation
Wiring the Transducers
Follow the instructions on page 1-4 before wiring the transducers.
!WARNING!
Before connecting the transducers, discharge any
static buildup by shorting the twisted pairs of the
transducer cables to the metal shield on the cable
connector.
1. Refer to the wiring diagram in Figure 1-7 on page 1-13 and
connect the transducer cables to the terminal block (TB-1) for
Channel 1. Then, secure the cable clamp.
Note: The RED cable leads are the SIG (+) leads and the BLACK
cable leads are the RTN (-) leads. The shield cable leads are
connected to the ground bus.
!ATTENTION EUROPEAN CUSTOMERS!
To meet CE Mark requirements, all cables
must be installed as described in
Appendix B, CE Mark Compliance.
2. For a 2-path averaging UTX878, repeat step 1 to connect the CH2
transducers to the terminal block for Channel 2. It is not required
that both channels/paths of a 2-Channel unit be connected.
Note:
The UTX878 uses two channels or paths to make more
accurate flow measurement by averaging, subtracting or
adding the channels/paths together.
3. Connect the transducer shield wires to the UTX878 ground bus.
4. Do one of the following:
•
Proceed to the next section to wire the UTX878 RS232 serial
port, if desired.
•
Replace the front cover on the enclosure and tighten the screws.
Note:
A channel must be activated before it can begin taking
measurements. See Chapter 2,
Programming Site Data , for
instructions.