ONICON F-2600 - Manual (Page 29)

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax (727) 442-5699 • [email protected]
F-2600 & F-2700 Vortex Flow Meter Manual 02/15 - 0808-7 / 19204 Page 29
2.4.2 Insertion Procedure for Flow Meters with Permanent Insertion Tool
Figure 11. Flow Meter with Permanent Insertion Tool
1. Calculate the required sensor probe insertion length (see previous page). 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. Loosen the two packing gland nuts on the stem housing of the meter. 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.
4. 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.
5. Turn the insertion tool handle clockwise to insert the sensor head into the pipe.
Continue until the top of the upper retractor bracket aligns with the insertion length
position scribed on the stanchion. Do not force the stem into the pipe.
6. Tighten the packing gland nuts to stop leakage around the stem. Do not torque over
20 ft-lb.
!
!
i
!
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.