4220 Flow Meter
Section 3 Installation
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-
