Electrical connections
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© 2016 Van Putten Instruments BV | MAN-VP-MPRO-UK | Revision:1602 | Date:20-10-2016
Example:
Input voltage
24V
Required maximum current
20mA
24V / 0.02A = 1200 Ohm
1200 Ohm is the maximum load that can be applied with a 24V input level.
Above example does not include the current consumption of the flow meter itself. When power to
the flow meter is applied using a long cable, include a current consumption of 500mA to the
formula.
Electrical scheme
The current meter is placed in between the current output and the power supply ground. You can
also use a digital multimeter to test the current output.
10.2
Pulse
The pulse output is an active non potential free current output. This means that the + wire is shared
between power supply and the pulse output. The output signal will be 0mA in idle state. When a
pulse is generated, a 20mA signal will be outputted for 1 second.
The counter can be placed between the pulse output and the power supply - (neg).
Cabling
The electrical specifications are identical to the 4..20mA output. Therefore the suggested cabling is
identical.
Electrical scheme
