Important Notes And Requirements To Installation And Operation; Installation In Piping - Sika Turbotron VTH 15 Serie Betriebsanleitung

3 Important Notes and Requirements to Installation and Operation

Observe the following instructions in order to achieve highest-possible measurement accuracy and
specified output signal.
•
Before installing the turbine flow sensor flush the pipe carefully. You avoid a blocking of the turbine
caused by particles from the pipe installation.
•
The installation position of the flow control instruments is unreserved. If it is installed into vertical pipes,
the flow direction is preferably from below upward. You must avoid a free outlet.
•
The arrow which is placed on the flow sensor (è) shows the only permitted flow direction.
•
A straight tube in front of the flow sensor must be retained, min 10 x DN, i.e. 15 cm. Behind the flow
sensor, a straight outlet tube of 5 x DN, i.e. 7.5 cm, must be kept. The internal diameter of the in- and
outlet tubes must correspond with the internal diameter of the flow control instrument = 15 mm. Before
and behind the stabilization tubes, the line may be contracted or enlarged.
In practice these instructions often can not be observed. Then the pulse rate and the measurement
accuracy can be affected.
•
The flow medium to be monitored should preferably contain as few solid particles as possible.
Present particles must not exceed a diameter of 0.5mm. If necessary, install a filter!
•
The materials of the series VTI...and VTH... are not suitable for monitoring oils. The strength of the
used plastic parts would be considerably reduced.
•
Attention:
The upper union piece of the instrument is sealed and must not be opened. When you loosen the union
piece, the fixation of the turbine system is disturbed and it will be damaged.

4 Installation in Piping

•
Now you can install the Turbotron in the
piping system which was prepared
according to chapter 3.
•
Make sure that your piping system has a
collar. The face of the collar serves as
sealing area. The collar is pressed against
the flat seal by the provided knurled union
nut.
•
You must tighten the plastic union nuts with
a torque of max. 8 Nm, the brass union nuts
with 30 Nm.
•
If you seal the male thread, take care that no
fibrous sealing compounds get into the
turbine (hemp or Teflon strip).
12 EA-2700-d-e 10/2005