Waterworks
IOM
Sensors
| 45 |
7.4.3 Installation of the sensor
ATTENTION: The sensor is equipped with a safety device (consisting of a stop ring) designed to prevent the
pressure from leaking out of the sensor in case the locking ring accidentally unscrews. Do not, under any
circumstances, remove this safety device.
The safety device prevents the sensor from coming out of its seat, but not from its moving, which can be sudden
and potentially dangerous in the case of high line pressure.
ATTENTION: The installation, assembly, and disassembly must be done when the pipe is empty.
7.4.3.1 Preparation of the pipe
7.4.3.2 Installation of the flowmeter
ATTENTION: Before inserting the sensor, check that the insertion hole is free from obstruction and/or burrs
caused by preparation work because it could damage the device.
Drill in the installation position.
The hole must have a minimum diameter of Ø 40mm
in order not to interfere with the sensor head.
Weld a 1”1/4 GAS threaded sleeve to the pipe, centering
it correctly on the hole.
Fig. 78
Fig. 79
Insert the sensor into the
threaded sleeve, taking
care not to damage the
measuring head.
Tighten the nipple on the
sleeve. Use the PTFE tape
to ensure water tightness.
Adjust the alignment of
the sensor in relation to
the pipe (with an accuracy
of ± 2°) and the insertion
depth.
Tighten the upper ring nut
of the nipple to lock the
sensor in place.
Fig. 80
Fig. 81
Fig. 82
Fig. 83
