Sierra INNOVA-MASS 241-VTP - Manual (Page 25)

Series 24-HP Instruction Manual Chapter 2 Installation
IM-24-HP 2-11
Insertion Procedure for Meters with a Compression Connection
Figure 2-7. Flow Meter with Compression Type Fitting
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. Slightly tighten the compression nut to prevent
slippage.
3. Bolt or screw the flow meter assembly into the process connection.
Use Teflon tape or pipe sealant to improve the seal and prevent seiz-
ing on NPT styles.
4. Hold the meter securely while loosening the compression fitting. In-
sert the sensor into the pipe until the calculated insertion length, I, is
measured between the base of the enclosure adapter and the top of
the stem housing, or to the raised face of the flanged version. Do
not force the stem into the pipe.
5. Align the sensor head using the sensor alignment pointer. Adjust the
alignment pointer parallel to the pipe and pointing downstream.
6. Tighten the compression fitting to lock the stem in position. When
the compression fitting is tightened, the position is permanent.
Caution!
The sensor alignment
pointer must point
downstream, in the
direction of flow .
Warning!
To avoid serious injury,
DO NOT loosen the
compression fitting
under pressure .