9 Sensor specicaons
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9.9.4 PR-23-W mounng specics
PR-23-W Saunders valve body lowcell can be mounted either vertically or horizon-
tally. Special sensor support is not needed as the valve body (piping) supports the
sensor. Either way sensor cover should always be horizontal to avoid sedimentation
or gas/air pocket on the prism. Also installation after pump, before valve and low
installation point will reduce risk of air/gas pocket. Recommended low velocity is
1.5–6m/s (5–20ft/s).