Teledyne 4250, Installation And Operation Manual, Page: 100 / 204

4250 Flow Meter
Section 3 Installation
3-10
Figure 3-5 Cable Connections in the Quick-Disconnect Box
The wire colors shown are for the Teledyne Isco-supplied custom
cable. You must use the Isco cable because the connector at the
flow meter end of the cable is special and not available else-
where. When you wire the cable inside the Quick-Disconnect
Box, attach each wire to the terminal that has the
same color
wire soldered to it. Mount the Quick-Disconnect Box with screws
through the holes in the stainless steel backplate. The connector
on the AV sensor cable connects to the mating connector on the
side of the Quick-Disconnect Box.
If you use the cable without conduit, you must install a com-
pression bushing on the cable to make a water-tight connection. A
picture of the compression bushing is on the next page. If you run
the wiring inside conduit, liquid-tight fittings are needed. To min-
imize the effects of corrosion, we suggest the use of non-metallic
conduit, if permissible.
The desiccant cartridge on the bottom of the Quick-Disconnect
Box provides the atmospheric reference to the sensor’s pressure
transducer. If there is any chance of submersion of the Quick-Dis-
connect Box, attach vinyl tubing to the desiccant cartridge and
route it to a place well above the maximum expected liquid level.
When you have completed the wiring inside the box, replace the
cover and tighten the screws that hold the cover securely to
prevent the possibility of any moisture entering the case.
RED GREEN
WH
IT
E
BLA
C
K
ORANGE/
W
H
IT
E
ORANGE
BLUE
BLUE/
W
HI
TE