Burkert 8400 Manuel D'instructions page 6

2 DESCRIPTION
8400
Wall-mounted
holder
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2.1 Design
The temperature controller 8400 is an electronic module which has to
be inserted into an holder previously mounted on a wall. It must be
associated to a remote 3-wire Pt100 temperature sensor (for example,
an ST21 sensor). It may switch a solenoid valve, activate an alarm or
establish a control loop.
The switching point can be adjusted by means of the three keys located
under the display.
The electrical connection is carried out via a 5-pin-M12 male connector
and a 4-pin-M12 female connector.
2.2 Measuring principle
The controller 8400 measures the resistance of the remote Pt100
sensor.
Wall-mounted Temperature Controller