ONICON F-2600 - Manual (Page 30)

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F-2600 & F-2700 Vortex Flow Meter Manual 02/15 - 0808-7 / 19204 Page 30
2.4.3 Insertion Procedure for Flow Meters with Removable Insertion Tool
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IMPORTANT NOTE
If line pressure is above 500 psig, it could require up to 25 ft lb of torque to insert the flow meter.
Do not confuse this with possible interference in the pipe.
CAUTION
The sensor alignment pointer must point downstream in the direction of flow.
Figure 12. Flow Meter with Removable Insertion Tool
1. Calculate the required sensor probe insertion length. Measure from the depth marker
arrow down the stanchion and scribe a mark at the calculated insertion depth.
2. Fully retract the flow meter until the sensor head is touching the bottom of the stem
housing. Attach the meter assembly to the 2" full-port isolation valve, if used. Use
Teflon tape or pipe sealant to improve seal and prevent seizing on NPT style.
3. Remove the two top stem clamp nuts and loosen two stem clamp bolts. Slide the stem
clamp away to expose the packing gland nuts.
4. Loosen the two packing gland nuts. Loosen the stem lock bolt adjacent to the sensor
alignment pointer. Align the sensor head using the sensor alignment pointer. Adjust
the alignment pointer parallel to the pipe and pointing downstream. Tighten the stem
lock bolt to secure the sensor position.
5. Slowly open the isolation valve to the full open position. If necessary, slightly tighten
the two packing gland nuts to reduce the leakage around the stem.
6. Turn the insertion tool handle clockwise to insert the stem into the pipe. Continue
until the top of the upper retractor bracket lines up with the insertion length mark
scribed on the stanchion. Do not force the stem into the pipe.