Camlogic CLC40 Installation And Maintenance

S.a.s. di Guazzetti Giovanni e C.
COSTRUZIONI MECCANICHE ELETTRICHE
Installation and Maintenance Rules for:
Conductive level indicator CLC40
CLC40
STANDARD FEATURES
The CLC40 is a sensor for the detection of level thresholds on conductive liquids, built in compliance with the regulations in force in the European
Union and specically with:
Casing in PA6 (Nylon). Ingress protection IP65. Threaded connection 1" 1/2 Gas.
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Stainless steel electrodes (AISI 316).
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Intended power supplies: 115/230 or 24/48 VAC 50/60 Hz - 24 VDC
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Use contacts capacity: 8A - 250VAC
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Electric draw: 1W
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Maximum working pressure: 5 bar
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Operating temperature: from -10 to +70°C
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Maximum liquid temperature: +90°C
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Electrical conductivity: min. 5µS/cm with 20mm of electrode covered
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SAFETY RULES
All the operations described in the documentation must be carried out only by qualied personnel
authorized by the plant manager, adopting all the appropriate safety precautions to reduce the risk
of re, electric shock and personal injury.
The operational safety of the device is guaranteed only by use in accordance with the regulations, the
instructions for use and any additional instructions. Arbitrary transformations or modications are
categorically prohibited. In the event of improper or non-intended use, the device can be a source of
dangers related to the specic application, or damage to the plant due to incorrect assembly or
conguration.
Verify that the power supply system complies with the standards, with an automatic protection switch
incorporated. Any control, cleaning, maintenance, change or replacement of parts must be carried out
with the indicator disconnected and the plug disconnected from the power supply.
INSTALLATION
Before installation, perform a visual inspection of the device to make sure that it did not suffered any
damage during transport or storage. If anomalies are found, the product must be sent to the
Manufacturer for restoration of efciency.
The CLC40 indicator can be installed in different positions (Pic. 1). With two electrodes it is possible to detect a
single level (maximum level for overow protection, or minimum level for dry running protection); with three
electrodes there is a two-point control (lling pump switched on when the minimum level is reached and
switched off at the maximum level). The incoming liquid ow should not directly hit the electrodes (danger of
false signals). With liquids that tend to form a conductive patina, vertical mounting is preferable (from the top of
the tank), however it is not recommended for use with greasy and oily products that might form an insulating
lm on the surface of the electrodes.
To adjust the intervention height, it is possible to shorten the electrodes. Before carrying out this operation,
unscrew the bars from the casing to avoid damaging the level sensor. The numbers of the bars are visible on
the back of the threaded connection (Pic. 2). The length of the reference electrode (E1) must be equal to or
greater than that of the minimum measurement electrode (E2).
WIRING
Disconnect the power supply, before proceeding with the connection operations.
Use cables with an adequate section to guarantee a current density, in each conductor, not exceeding 4A /
2
mm . Use exible cables with an external diameter suitable for the cable gland used (not supplied) to ensure
watertight integrity. Use 6.3x0.8 mm Faston cable lugs with Faston cover for all contacts.
Inside the level indicator, on the printed circuit, there are indications for the electrical connection of the
power supply and relay (Pic. 3).
OPERATION
If at least two electrodes are covered by a conductive product, small alternating currents will pass from
the measuring electrode (E2 or E3) towards the reference electrode (E1), causing an intervention
command.
On the printed circuit board there are a few service elements, shown in Pic. 4:
- Relay 1 and relay 2 signalling LEDs;
- DIP Switch to choose the setting, one or two point operation and intervention delay;
- TRIMMER to adjust the instrument sensitivity (clockwise rotation = sensitivity increase).
R R
Via dell'Industria 12 - 12/A - 42025 CAVRIAGO - RE - Italy
Tel.: 0522/942641 - 0522/941172
www.camlogic.it e-mail: camlogic@camlogic.it
Pic. 1
E3: maximum
level electrode
Pic. 2
RELAY 2
Pic. 3
Max
Min
Min
E1: reference
electrode
E1
E3
E2
E2: minimum
level electrode
E3
E2
E1
RELAY 1
POWER SUPPLY