Instruction manual

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39
Consumption
Flow station DS 300
with direction indication in one direction
By connecting the flow direction switch
VA 409 to the flow station DS 300 only the
consumption in one direction is measured.
So it is guaranteed that the back-flowing
compressed air is not counted twice.
Special features
 precise consumption measurement in
one direction
 when doing the cost calculation of the
compressed air it is avoided that back-
flowing compressed air is counted twice
Flow station DS 300
with flow direction indication in both directions
For this reason two flow stations DS 300
are used for precise consumption
measurement of both flow directions.
Special features
 precise consumption measurement
in both directions
 separate indication of the actual
consumption (m³/h resp. m³/min etc…)
separate summing of the total
consumption (m³ resp. l)
 forwarding of the analogue output and
of the pulse output for the respective
flow direction
In case the flow direction switch VA 409
indicates the flow direction and forwards
this information to the flow station DS 300.
Each of both flow stations DS 300
exclusively measures the flow in one
direction. The flow direction switch VA 409
is mounted in the middle between both
flow stations in order to avoid flow
turbulences.