Safety Instructions - Sika Turbotron VTH 15 Serie Betriebsanleitung

2 Safety Instructions

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Before you install the product, please read the relevant chapters of the installation instruction carefully.
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The turbine flow sensor is only suitable for measurement of fluids – never use the instrument for gas
measurements.
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Check before installation, whether the material of the turbine flow sensor is suitable for the medium to
be monitored (see Materials Table, Chapter 7)!
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You can fit the turbine flow control instrument in any position. If it is installed into vertical pipes, the flow
direction is preferably upwards. You must avoid a free outlet.
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The arrow which is placed on the flow sensor (è) shows the only permitted flow direction.
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For precise measurement, the length of the in - and outlet tubes must be observed
(see Chap. 3: Requirements to Installation and Operation).
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The internal diameter of the in- and outlet tube must correspond with the internal diameter of the flow
sensor.
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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!
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Avoid absolutely the formation of gas bubbles or cavitation in the medium by taking proper measures.
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The material of the series VTH and VTI is not suitable for monitoring oils. The strength of the used
plastic parts would be considerably reduced.
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In order to clean the flow sensor of contaminations, flush the unit with water in opposite direction to the
flow (see Chap. 7).
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A possible blowing out of the instrument VT...15... must take place only in opposite direction to the flow.
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We recommend to use only screened connection cables. Connect the shield on one side (the wire
ends) on ground.
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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.
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There are special customer designs that may differ from the standard data listed in these instructions –
always consider the specifications noted on the type plate.
If you should have any problems or questions, please contact your local supplier or directly:
11 EA-2700-d-e 10/2005