Instructions for Use – SCHMIDT
®
Flow Sensor SS 20.600 Page 29
Pulse outputs
The two pulse outputs provide the same measured variable, which de-
pends on the sensor configuration:
In standard configuration the sensor maps the flow velocity w
N
propor-
tional to a frequency range [0 … f
max
], with selectable maximum fre-
quency f
max
(see Figure 5-3).
The volume flow
and the pulse valence V
N,Imp
(= volume per pulse)
can be determined on base of the actual output frequency, the measur-
ing range w
N,max
of the sensor and the inner pipe diameter D:
;
When configured as a consumption meter, pulses with a predefined
pulse valency (e.g. 1 m³/pulse) are transmitted.
To do this, the inner pipe diameter D must be specified when ordering
(D
min
= 25 mm).
Exceeding the measuring range of the flow w
N
is also output linearly up to
110 % of the measuring range. The output of higher flow values is limited
to 110 % of the measuring range.
If an error occurs, 0 Hz or no pulses will be output. The current initial state
remains unchanged.
Note:
The relay can be used as “S0-Interface” according to EN 62053-31
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