Wiring The In-Pipe Ultrasonic Sensor; Wiring The Velocity-Only Sensor; Bare Lead Sensor Cables - Sigma 980 Operating And Maintenance Manual

2.17

Wiring the In-Pipe Ultrasonic Sensor

Figure 24 In-Pipe Ultrasonic Sensor
2.18

Wiring the Velocity-Only Sensor

2.18.1 Bare Lead Sensor Cables

Note: Bare lead connections and
Quick-connections cannot be made
at the same time.
The in-pipe ultrasonic sensor is wired to the 980 Flow Meter the same way as
the ultrasonic downlook. Refer to
Sensor on page 49
Only install an ultrasonic downlook or an in-pipe ultrasonic sensor to the
instrument, they cannot be connected at the same time.
Bare lead sensor cables are used when the cable will be run through a
conduit. When conduit is used, it is recommended that the conduit be 1 in.
or larger.
Wiring Procedure
1. Disconnect all power to the 980. Refer to the
page 31.
2. Use a large flat-blade screwdriver to loosen the two screws securing the
980 cover. Open the cover.
3. Attach a NEMA-approved conduit or compression fitting to one of the
½ in. openings on the bottom of the instrument, and route the velocity-
only cable wires through the opening
section 2.16 Wiring the Downlook Ultrasonic
Wiring Safety Information on
Wiring the In-Pipe Ultrasonic Sensor
Section 2
Page 51