Design And Measuring Principle - Burkert 8025 Notice D'utilisation

2 SPECIFICATION

2.2 Design and Measuring Principle

Design
The compact flow transmitter combines a
flow sensor and a transducer with display in
in a splash-proof plastic IP65 enclosure.
The sensor part consists of a transducer
and an open-cell paddle-wheel.
The transducer component converts the
measured signal and displays the actual
value.
The output signals are provided via a 4-
pole plug or via one PG 13.5 (version without
relay) or via two PG 13.5 (version with
relays).
The panel version consists of an electronic
board integrated in a front-cover. The
associated flow sensor is a 8020/8030 with
"low power" Hall sensor or coil.
The transducer component converts the
measured signal and displays the actual
value.
The output signals are available on terminal
strips on the electronic board.
The wall-mount version consists of a
transducer with display in a splash-proof
plastic IP65 enclosure.
The associated flow sensor is a 8020/8030
with "low power" Hall sensor or coil.
The transducer component converts the
measured signal and displays the actual
value.
The output signals are available on a
terminal strip inside the enclosure via 3
PG 9.
FLOW TRANSMITTER 8025
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 (coil or Hall Sensor). 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 (inpulse/liter) is
available in the instruction manual of the
insertion fitting (Type S020;1500;1501).
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 pulse output with transistor
open collector NPN/PNP or relay Reed
(option) is available.
The transducer with two additional relays
functions in a 3-wire circuit. Limit values are
freely adjustable (not available with relay
Reed option).
The flow transmitter in compact and wall-
mount version can recieve a power supply
230/115 VAC as an option.
The flow transmitter 8025 with Hall sensor
measures a flow rate from 0.3 m/s (1.0. ft/
s).
The flow transmitter 8025 with coil can
measure a flow rate from 0.5 m/s (1.6 ft/s).
E-6-
8025 - 8025RR