Sierra InnovaMass 240i Series, Instruction Manual, Page: 21 / 115

21
Insertion Procedure for Meters with a Compression Connection
Figure 6. Insertion 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 seizing on NPT styles.
4. Hold the meter securely while loosening the compression fitting. Insert 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.
The sensor alignment pointer must point downstream, in the direction of
flow.
To avoid serious injury, DO NOT loosen the compression fitting under
pressure.