Azbil MagneW Two-wire PLUS+ MTG15A, User Manual

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1-6
System configuration for contact output
System configuration
An example of system configuration is shown. If the instantaneous flow rate value measured
by this instrument reaches to the upper or lower limit settings or a major failure occurs in the
instrument, that state is outputted as a contact output.
In this system configuration, it is not only an analog signal but also the instrument to output
the contact output to a sequencer or other host control system.
Non-hazardous area Hazardous area
Power
supply
*
Contact receiver instrument
(Required open-collector
based pulse input.)
Fig. 1-5. System configuration for contact output
Note) *: Refer to Fig. 1-2.

Smart two-wire electromagnetic flowmeter (main unit): Measures flow rate and outputs an
upper or lower limit alarm or major failure as a contact output.

Contact receive instrument: Receive the contact input.

Open collector: An output method using a transistor contact.