Camlogic CLC40 Instruction Manual

CLC40
Installation and Maintenance Rules for:
Conductive level indicator CLC40
R
S.a.s. di Guazzetti Giovanni e C.
COSTRUZIONI MECCANICHE ELETTRICHE
0948
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
R
Via dell'Industria 12 - 12/A - 42025 CAVRIAGO - RE - Italy
Tel.: [phone]
www.camlogic.it e-mail: [email protected]
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).
E3
E2
E1
Pic. 2
E3
E1
E2
E1: reference
electrode
E2: minimum
level electrode
E3: maximum
level electrode
Pic. 1
Max
Min Min
RELAY 2
POWER SUPPLY
Pic. 3
RELAY 1

Both relays
are operating
1 OFF / 2 ON
R1
R2
R1
R2
R1
R2
R1
R2
The CLC40 can work with 1 or 2 relays, in
the default setting (de-energized relays) or
inverted (energized relays).
To set the oper ating mod e of the
instrument, use the rst two selectors of the
DIP Switch, as shown in the following table.
DE-ENERGIZED
ENERGIZED
DEFAULTINVERTED
With the last two selectors of the DIP Switch it is also possible to set an intervention delay for
the CLC40, which can be used for example to avoid false signals.
Finally, thanks to the TRIMMER it is possible to adjust the sensitivity of the instrument, which
increases by rotating it clockwise (screw). In particular, for liquids whose conductivity is lower
than 1 mS, follow the procedure described below:
1. Fill the tank to cover about 1 cm of the minimum level electrode (E2).
2. Position the DIP Switch on the default setting (de-energized relays).
3. Switch on the power supply.
4. Gently unscrew (counter-clockwise) the TRIMMER to the minimum position.
5. Gently screw (clockwise) the TRIMMER untile the R1 LED turns on.
The sensor will then be properly adjusted to the product.
LED R2 LED R1
DIP Switch TRIMMER
Pic. 4
The CLC40 sensor, used appropriately in normal operating conditions, does not require any
maintenance.
Deposits of limestone or other non-conductive lms can interact with the correct functioning of the
sensor. In such cases it is necessary to periodically clean the electrodes.
MAINTENANCE
CAMLogic, in addition to the terms of the supply contract, guarantees its products for a period of
twenty-four (24) months from the date of shipment.
his warranty is expressed only in the repair or replacement free of charge of parts that, after careful
examination by the Manufacturer, turn out to be defective. Warranty, excluding all liability for direct
or indirect damage, is considered to be restricted to only defects in materials and has no effect if
the parts returned turn out to have been anyhow dismantled, tampered with or repaired by anyone
other than the Manufacturer.
Warranty likewise excludes damage deriving from negligence, carelessness, bad or improper use of the level gauge, or from bad handling by
the operator and faulty installation. Warranty is moreover forfeit if non-genuine spare parts have been used.
A returned level gauge, even if under warranty, must be shipped carriage free.
WARRANTY
10 sec.
No
delay
2 sec.
6 sec.
SW 60
ø 1"1/2 Gas
91,5 30 30 920
ø 1/2" Gas
ø 8
110
Standard length of the electrodes = 920 mm. To be determined by the client needs, minimum measure 80 mm and maximum 3000 mm.
REFERENCE FIGURE
INTERVENTION DELAY
Only R1
is operating
1 OFF / 2 OFF
Both relays
are operating
1 ON / 2 ON
Only R1
is operating
1 ON / 2 OFF
3 OFF
4 OFF
3 ON
4 OFF
3 OFF
4 ON
3 ON
4 ON
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED
DE-ENERGIZED
ENERGIZED
ENERGIZED ENERGIZED
ENERGIZED
ENERGIZED ENERGIZED
ENERGIZED
ENERGIZED ENERGIZED
ENERGIZED
ENERGIZED
ENERGIZED
ENERGIZED
ENERGIZED