Teledyne 4220 - Manual (Page 91)

4220 Flow Meter
Section 3 Installation
3-9
submerged probe extension cables.) Do not try to patch extension
cords. If you need to operate at greater lengths, use the
Quick-Disconnect Box.
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 wire ends on the other as a special order.
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 to the box with a water-
proof compression bushing (available from Teledyne Isco).
When you wire the cable to the terminals inside the Quick-Dis-
connect Box simply 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 M/S connector on the submerged probe cable connects to the
mating connector on the side of the Quick-Disconnect Box.
Note the desiccant cartridge on the bottom of the Quick-Dis-
connect Box. This provides the atmospheric reference to the sub-
merged probe’s pressure transducer. If there is any chance of
submersion of the Quick-Disconnect Box, you should attach vinyl
tubing to the desiccant cartridge and route it to a place well
above the maximum expected liquid level. When you have com-
pleted the wiring inside the Quick-Disconnect Box, replace the
cover and tighten the screws securely that hold the cover to
prevent the possibility of any moisture entering the case.
Figure 3-4 Quick-Disconnect Box for the Submerged Probe (Cover Removed)
This will serve the same function as described in the previous
paragraph. If you cannot mount the Quick-Disconnect Box far
enough above the flow stream to ensure against accidental sub-