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RAY FS WP / RAY FS WS
Flow direction arrows on the housing and the measurement
insert must be aligned during installation!
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Thoroughly flush out the pipes before installing the flow sensor.
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If the water is soiled, fit the strainer in the pipe in front of the flow
sensor.
ƒ
Install the flow sensor in a frost proof position at the lowest possible
point of the installation to avoid air accumulation.
ƒ
Install the flow sensor in the approved mounting position.
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The flow sensor must be fitted in the pipeline so that it is tension-free.
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Tighten the fastening screws equally in a crosswise sequence.
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The flange seals should not protrude into the pipeline.
ƒ
Fill the pipeline slowly after installation, to avoid damages to the
measurement insert through pressure shocks.
ƒ
The flow sensor must always be completely filled with water.
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The flow sensor must be protected against pressure shocks in the
pipe.
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The pressure of the pipeline and the medium temperature should not
be higher than the data on the type plate.
ƒ
All components for the flow regulation (e.g. valves) should be
mounted behind the flow sensor.
ƒ
Once the meter has been installed, the components (calculator, vol-
ume measuring component and both temperature sensors) must
be sealed and the meter taken into operation by an organisation
approved by the applicable regulations.
ƒ
Check the display for a plausible indication of volume.
ƒ
Operating Instructions for further Information is available at
https://www.diehl.com/metering/en/support-center/download-
center/
4.
Calming Sections
RAY FS WP (MID):
ƒ
According to approval, no calming section upstream and downstream
of the meter is necessary. However, we recommend a smooth pipe
section upstream and downstream of the meter. The length of this
pipe section should be at least three times the nominal diameter.
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