Bürkert 8035, Instruction Manual

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E-4-
FLOW TRANSMITTER 8035 2 DESCRIPTION
2.3 Design and measuring principle
Measuring Principle
When liquid flows through the pipe, 4
magnets inserted in the paddle-wheel set
in rotation produce a measuring signal in
the transducer (with sinus or pulse output
signal). The frequency modulated induced
voltage is proportional to the flow velocity of
the fluid.
A correlation coefficient (K-Factor) is
necessary to compute the flow rate value.
The correlation coefficient (in pulse/liter) is
available in the instruction manual of the
Inline fitting (S030).
The transducer without relay functions in a
2-wire circuit and requires a power supply
of 12...30 VDC. A 4...20 mA standard
signal is available as output signal,
proportional to the flow rate.
A polarized potential free pulse output is
available.
The transducer with two additional relays
functions in a 3-wire circuit. Limit values
are freely adjustable.
The flow transmitter 8035 with pulse
output signal measures a flow rate from
0.3 m/s.
The flow transmitter 8035 with sinus output
signal can measure a flow rate from 0.5 m/s.
Construction
The flow transmitter 8035 consists of an
electronic IP65 housing SE35 set by
quarter turn on the fitting S030. The
electronic housing integrates the electronic
board with display, programming keys and
also a transducer. The paddle-wheel is
integrated in the fitting.
The transducer component converts the
measured signal and displays the actual
value.
The output signals are provided via a 4-
pole plug (EN175301-803) or via two
cable glands.