Instruction Manual
DM04
6
Commissioning and measuring mode
Before switching on the DM04 for the first time, please follow the instructions in the following section.
6.1 Commissioning
Check that
the DM04 has been installed correctly and that all screw connections are sealed.
the electrical wiring has been connected properly.
the measuring system is vented by flushing.
6.2 Switching on and off
The DM04 has no switch and can therefore not be switched on and off independently. Switching on and off
takes place via the connected supply voltage.
Switch on the supply voltage.
The green LED lights up once for~1 s. The DM04 is ready and goes into
measuring mode.
6.3 Measuring mode
In measuring mode, the green LED flashes proportional to the measured
flow.
The human eye cannot detect the flashing any longer from a frequency of
~30 ... 40 Hz.
In that case the green LED seems to be lit permanently.
The following subsections only apply to devices which have the correspondent functionality.
DM04 with frequency output:
The DM04 provides according to the version a flow proportional NPN, PNP or Push-Pull square wave sig-
nal.
The frequency of the pulse output changes according to the flow (
Fig.).
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PKP Prozessmesstechnik • 08/2019
