Teledyne 4250, Installation And Operation Manual, Page: 99 / 204

4250 Flow Meter
Section 3 Installation
3-9
3.4 Quick-Disconnect Box
You can install the flow meter as far as 1,000 feet from the AV
sensor if you use the Quick- Disconnect Box.
Otherwise, you
must locate the flow meter within 75 feet of the 10 foot AV sensor,
(100 feet for the 30 foot AV sensor), as this is the maximum
length of cable available to connect the AV sensor to the flow
meter (25 or 50 feet supplied with either AV sensor plus 50 feet
maximum with two of the AV sensor extension cables.) Do not try
to add more extension cords. If you need greater lengths, use the
Quick-Disconnect Box.
Figure 3-4 Quick-Disconnect Box for the Area Velocity Sensor
To use the Quick-Disconnect box, you will need a cable of the correct
length with an M/S connector to plug into the flow meter. Teledyne
Isco will build the cable with the proper connector on one end and
stripped wires on the other end as a special order. You should power
the flow meter from AC if you must use the Quick-Disconnect Box,
especially if you need to run the full 1,000 feet.
You can install the cable in conduit and connect the conduit to
the Quick-Disconnect Box or you can run the cable in the open to
the Quick-Disconnect Box and attach it with a waterproof com-
pression bushing (available from Teledyne Isco). If you use
conduit, use a liquid-tight fitting and a washer at the Quick-Dis-
connect Box.
Wire Color Terminal Number
Red 1
Green 2
White 3
Black 4
Orange-White 5
Orange 6
Blue 7
Blue-White 8