Operation Manual

9. Sensor signal outputs
If the flow rate is too high, the S 421 cannot output the pulses with default
settings (one pulse per consumption unit). In this case, the pulse can be set
by our service software or a connected display to 1 pulse per 10 consumption
units or 1 pulse per 100 consumption units. For example, if set to 1 pulse per
10 m
3
, the sensor sends one pulse each 10 m
3
. Example (1 pulse per 10 m
3
):
Volumetric flow
[m
3
/s]
Volumetric flow
[m
3
/h]
Pulse length
[ms]
Max. pulse
output
per hour
≦ 3 ≦ 10800 120 1080
> 3 > 10800 60 2880
> 6 > 21600 30 3960
22 S 421