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F-1500 Turbine Flow Meter Manual 02/18 - 1018-6 / 35726
Page 17
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 full-port isolation valve. 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 align-
ment 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.
CAUTION
The sensor alignment pointer must point downstream, in the direction of flow.
!
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.
i
2.3.3 Insertion Procedure for Flow Meters with Removable Insertion Tool
Figure 5. Flow Meter with Removable Insertion Tool