Spirax Sarco RIM20, Инструкция по установке и обслуживанию, Страница: 27 / 132

IM-P198-05 MI Issue 2 27
3.10.1 Insertion procedure for flowmeters with no insertion tool (Packing
gland connection)
Warning!
The line pressure must be less than 3.48 bar g (50 psi g) for installation.
Caution!
The sensor alignment pointer must point downstream, in the direction of flow.
1. Calculate the required sensor probe insertion length.
2. Fully retract the stem until the sensor head is touching the bottom of the stem housing.
Remove the two top stem clamp nuts and loosen two stem clamp bolts. Slide the stem
clamp away to expose the packing gland nuts. Loosen the two packing gland nuts.
3. Align the sensor head using the sensor alignment pointer. Adjust the alignment pointer
parallel to the pipe and pointing downstream.
4.
Insert the sensor head into the pipe until insertion length, I, is achieved. Do not force
the stem into the pipe.
5. Tighten the packing gland nuts to stop leakage around the stem. Do not torque over
27.116 N-m (20 ft-lbs).
6. Slide the stem clamp back into position. Torque stem clamp bolts to 20.337 N-m (15
ft-lbs). Replace the stem clamp nuts and torque to 13.56 - 20.337 N-m (10 - 15 ft-lbs).