EN
Installation and operating manual
19 METPOINT
®
SF53
3.2. Installation
The sensor is installed by means of a ½, DN 15 ball valve (min. Ø 15 mm).
Install the straight fitting with the O-ring (G½ thread, WS 32) in the connecting nozzle. Ensure that the assembly is pressure-tight.
Position the sensor head at the centre of the pipe and align it to the flow direction. To do this, the sensor tube is equipped with a
depth scale, arrows indicating the direction of flow and an aligning aid. After the sensor is correctly positioned and aligned, tighten
the slotted spring pin with a torque of 20-30 Nm (WS 27).
When tightening the straight fitting and the slotted spring pin, take care not to change the alignment of the sensor. Otherwise,
you might need to correct the sensor position and alignment.
The angle of the sensor should not deviate by more than ± 2° from the ideal position. Larger angles might result in inaccurate
measurement.
From an operating pressure of >10 bar, install a high-pressure protection element (prod. no. 4025892).
This allows for the installation of the sensor while the system is pressurised, and ensures that the sensor is safely secured at the
measuring point.
NOTICE
Additional information
For more information about the installation of the high pressure protection element, refer to the
installation and operating manual shipped with the element.
y
160
170
180
x
dA
Securing ring
Engraved depth scale
for precision installation
Installation depth = x + y
dA = outside diameter
x = dA
2
