Greyline Instruments DXC Operating Manual

Extended Sensor Cable

Model AVFM Area-Velocity Flow Meter

EXTRA SENSOR CABLE
(OPTION VXC)

Each Greyline AVFM flow meter includes 25 ft. (7.6 m) tri-coaxial sensor cable. This cable is
shielded from electrical interference and is watertight with a polyurethane jacket. Additional
cable and Cable Junction Box (Option VJB) may be ordered with the Flow Meter, or the cable
may be spliced and extended up to 500 ft (152m) as required during installation. No adjustment
is required when the sensor cable is extended or shortened. Use only Greyline tri-coaxial VXC
shielded cable, or run three RG174U coaxial cables in a metal conduit.

Extended sensor cable can be installed in conduit for mechanical protection. Recommended
installation with a metal junction box is illustrated below:

EXTENDED SENSOR

CABLE TO ELECTRONICS

ENCLOSURE

CONDUIT (BY CUSTOMER)

If Required For Mechanical Protection

TRI-COAXIAL

SHIELDED CABLE

500 ft (152m)

MAX. LENGTH

OPTION VJB SENSOR CABLE JUNCTION BOX

NEMA4 (IP55) STEEL

GND

SHIELD

CORE

SENSOR CABLE

25 ft (7.6m) SHIELDED

TRI-COAXIAL

SENSOR

GREEN WIRES
MUST BE CONNECTED
TO GND TERMINAL

SENSOR CABLE JUNCTION BOX
(OPTION VJB)

Optional Watertight steel NEMA4 (IP55) Junction Boxes with terminal strips are available from
Greyline Instruments.

DIMENSIONS

OPTION VJB - JUNCTION BOX