Bühler technologies BCM-W Kurzanleitung Seite 10

BCM-W
4.1 Installation
Before installing the device, ensure the system is depressur-
ised to prevent liquid from escaping. If necessary, use a collec-
tion container.
The BCM comes fully assembled and can be installed in the
piping flange connection on a tank housing using the screw-
in thread. When doing so, please ensure the sensor part is al-
ways fully bathed by medium to ensure the measured values
displayed are correct. For built-in versions, use the flow cell,
sold separately.
DANGER
Electric voltage
Risk of electric shock
When connecting devices, please note the maximum voltages
and currents (see technical data) and use the correct wire
cross-sections and circuit breakers.
When selecting the connection lines, also note the maximum
operating temperatures of the devices.
The flange-mounted display units can be swivelled vertically
by approx. 270° so they are easier to read. Please note the
built-in swivel stop. You will notice more resistance when
reaching the stop. Turning it beyond this stop may damage
the display unit.
4.1.1 Installation recommendation
Proper moisture sensor function requires the entire sensor
element to be inside the medium at all times. The sensor ver-
sion is suitable for installation at the side of the tank. Here the
installation position should be below the minimum liquid
level. When installing into a return pipe, be sure not to exceed
the maximum flow rate.
With the BCM-WR version the remote display mounts to a top
hat rail.
Installation example:
10 Bühler Technologies GmbH
Assembly block dimensions:
4.2 Electrical connections
Electricity is supplied via plug connectors. Please refer to the
appendix for installation dimensions, nominal voltage and
plug configuration.
The switching outputs are PNP transistors (see illustration):
Supply voltage
Note: When measuring the switching output with high-load
measuring device inputs or when used as a frequency output,
the load must be set to 10 kΩ between the output and earth
(GND) to avoid faulty measurements.
5 Operation and Control
NOTICE
The device must not be operated beyond its specifications.
5.1 BCM-WD/BCM-WR
This explanation of operation refers to the versions with dis-
play unit.
5.1.1 Start-up procedure
The device will automatically switch on when connected to
power. It will first briefly display the software version, at
which time the device will also check the built-in components.
The display will then switch to displaying measurements.
The following describes the function of the display and control
unit:
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G3/4
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BX150101 ◦ 12/2021E