Camlogic CLC40 Installazione e manutenzione

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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.

Stainless steel electrodes (AISI 316).

Intended power supplies: 115/230 or 24/48 VAC 50/60 Hz - 24 VDC

Use contacts capacity: 8A - 250VAC

Electric draw: 1W

Maximum working pressure: 5 bar

Operating temperature: from -10 to +70°C

Maximum liquid temperature: +90°C

Electrical conductivity: min. 5µS/cm with 20mm of electrode covered

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 /

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).

Via dell'Industria 12 - 12/A - 42025 CAVRIAGO - RE - Italy

Tel.: 0522/942641 - 0522/941172

www.camlogic.it

e-mail: [email protected]

Pic. 1

E3: maximum

level electrode

Pic. 2

RELAY 2

Pic. 3

Max

Min

E1: reference

electrode

E2: minimum

level electrode

RELAY 1

POWER SUPPLY