CARLO GAVAZZI CD34 Serie Manual Del Usuario página 3

Mounting and dismounting the sensor in the bracket
Mounting the sensor
Dismounting
the sensor
Maintenance
The sensor is maintenance-free; contaminations can be removed with
chemicals specified in the datasheet. See ECOLAB information.
Delivery contents
• Capacitive sensor: CD34 ...
• Mounting bracket: ACD34-MB01
• 2 x foam pads, thickness 3 mm (for pipe mounting)
• 2 x adhesive pads, thickness 1 mm (for adhesive surface mounting)
Maximum bonding strength is achieved after 24 hours.
• Short Instruction sheet
Operation
LED Indicators:
• The yellow LED lights up when the output is active. If the output is
short-circuited, the yellow LED flashes with 4 imp. per sec.
• The green LED lights up when power is connected to the sensor
Sensing functions:
Out of the box (Factory settings):
The sensor can typically be used without any additional calibration; it is
designed to work with plastic tank walls of approximately 0,5 to 6 mm
and glass walls of approximately 0,5 to 4 mm. It is important that the
glass or plastic is nonconductive.
Calibration:
If the factory settings are insufficient, the sensor can be "teached"
either Full or Empty calibration.
Calibration Full:
The sensor switch point is set below the actual detection value to
ensure that slight changes in the application will not affect the sensing
performance.
In most applications, the full calibration on a full tank or tube will be
sufficient.
In critical applications with large variations in media type and tempera-
ture, it may be an advantage to teach the Full level with approximately
50 % of the active sensing surface covered.
Full calibration procedure:
• Connect teach wire to V+ for 2 – 7 seconds
• Green LED flashes 1 imp. per sec. and yellow LED is OFF
• After successful calibration, the yellow LED flashes 3 times (with 1 Hz)
Calibration Empty:
The sensor switch point is set above the actual detection value to
ensure that slight changes in the application will not affect the sensing
performance.
In most applications, the empty calibration on an empty tank or tube will
be sufficient.
In critical applications with a high amount of residue film, moisture or
foam build-up, an Empty calibration can be performed with the build-up
present.
Empty calibration procedure:
• Connect teach wire to V+ for 7 – 12 seconds
• Green LED flashes 1 imp. per sec. and yellow LED is ON
• After successful calibration, the yellow LED flashes 3 times (with 1 Hz)
Cancel Calibration Procedure:
• Keep the teach wire connected to V+ for more than 14 seconds to
abort teach procedure. The switch points will remain unchanged.
• Green LED is off and yellow LED flashes (4 Hz)
Factory settings:
Full teach at 2 mm distance to metal target
The sensor cannot be repaired and must be disposed of following the
European Directive for "Waste Electrical and Electronic Equipment". Do
not dispose of the sensors with household waste!
National regulations for disposal must be fulfilled.
Refer to the datasheet for the latest technical information.
English
Operation
Disposal
Electrical data
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