2150EX AV Flow Module - Isco
2150EX AV Flow Module - Isco
2150EX AV Flow Module - Isco
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<strong>2150EX</strong> Area Velocity <strong>Flow</strong> System<br />
Section 2 Preparation and Installation<br />
Do not overtighten the mechanism. It is designed to flex<br />
somewhat to provide a positive lock, once moderately tightened.<br />
For installations in larger channels and/or high flow, extensions<br />
2, 3, and 4 have slots for attaching the ring to the channel wall<br />
using appropriate anchoring hardware.<br />
WARNING<br />
Avoid prolonged use of excessive force when adjusting the<br />
equipment. This can create hot surfaces from the friction<br />
of screw or lever mechanisms, resulting in a potential<br />
ignition hazard if surface temperatures exceed the<br />
equipment’s 135°C rating.<br />
Scissors Mechanism<br />
Extensions<br />
Base Section<br />
Tightening the scissors assembly expands the ring to<br />
press firmly against the pipe wall, securing the ring.<br />
Figure 2-25 Scissors Ring adjustment<br />
To prevent debris from catching on the probe cable, it is<br />
important to attach the cable to the mounting ring so it offers as<br />
little resistance to the flow as possible. Attach the sensor cable to<br />
the downstream edge of the ring, using the self-locking plastic<br />
ties supplied with the ring. Place the ties through the holes in the<br />
mounting ring and then lock them around the cable.<br />
CAUTION<br />
Do not overtighten the plastic cable ties; they should be tightened<br />
just enough to secure the cable in place, without greatly<br />
indenting the cable. Overtightening the plastic ties may collapse<br />
the reference tube in the cable, blocking it.<br />
2-35