Operation Manual

6.4 Installation of the sensor
First please observe the flow direction
indicated on the housing or on the shaft. It
must match the flow direction of the
compressed air or gas.
1. Ball valve has to be closed.
2. The sensor head has to be completely
covered by the connection thread (see
photo on the left).
3. Underlay the “O-ring” at the thread of
the ball valve before screwing the flow
sensor.
4. Screw the connection thread tightly to
the ball valve and align flow sensor to flow
direction.
5. Open ball valve and tighten clamp
sleeve manually by hand.
6.Perform zero flow calibration (see
picture on P21).
7. Move flow sensor slightly to the
determined insertion depth by means of
the scale.
8. Tighten the clamp sleeve at the
connection thread so that the flow sensor
can not longer be moved by the pressure
in the pipe, however it should be possible
to move the sensor shaft manually.
9. With the aid of the alignment key make
sure that the actual flow direction is same
as the arrow shows (the angle deviation
should not be larger than ± 2° to the
perfect position, please see picture on the
next page).
10. Tighten clamp sleeve with clamping
torque 20...30 Nm.
11. During the final check control the
installation depth again because sometimes
the shaft is moved from its original position
due the compressed air.
18 S430