Commissioning
Check that
•
the DM01A has been installed correctly and thal all screw connections are sealed.
•
the electrical wiring has been connected properly.
•
the measuring system is vented by flushing.
The DM01A has no switch and cannot be switched on or off on its own. Switching on and
off is carried out by the applied supply voltage.
Switch on the supply voltage
The green LED lights up. The DM01A is ready and goes into measuring mode.
Measuring operation
In the measuring mode, the green LED flashes proportional to the measured flow.
For the human eye, the flashing is no longer visible from a frequency of ~30…40 Hz.
The green LED then seems to light up permanently.
DM01A with frequency output:
The DM01A provides according to the version a flow proportional NPN, PNP or Push-Pull
square wave signal.
The frequency of the pulse output changes according to the flow (→ Fig.)
DM01A with analogue output:
According to the configuration of the DM01A, the analogue output provides a voltage or
current signal.
This signal is proportional to the measured flow. You will find the scaling of the analogue
output on the type plate.
DM01A Instruction manual 07/2019
page 8
