- For level detection of electrically conductive and non-conductive fluids
- Compact miniature performance
- Easy setting by means of magnetic pen
- Direct mounting to vessels, tanks, sumps, tubes
- High temperature performance available
- Outputs S, PNP, NAMUR
- LED state indication *
Capacitive level sensors (switches) CLS–23 are designed for limit level detection of electrically conductive and non-conductive fl uids in vessels, reservoirs, sumps, pipes, tanks, etc. The sensitivity of the sensor can be easily set by placing magnetic pen on sensitive spot.
The process coupling at the housing can be with metric thread (M18x1.5 ; M20x1.5), pipe thread (G3/8" ; G1/2") or sealing thread (NPT 1/2–14). Output performances – transistor output with open collector (PNP), two wire electronic switch (S) and NAMUR output.
There are next performances available: N – Normal for non-explosive areas, E – Extended temperature range for non-explosives areas, Xi – Explosion proof (intrinsically safe for explosive areas), NT – High temperature variant for non-explosives areas and XiT – High temperature variant for explosive areas.
FEATURES OF VARIANTS
- CLS –23_ –10
- Uncoated short bar electrode, for sensing of electrically non-conductive liquids (mineral and plant oils, resins, etc.). Mounting in horizontal position. Electrode length 30 mm.
- CLS –23_–11
- Insulated (coated) short bar electrode, for non-aggressive electrically conductive liquid sensing (water, water solutions). The insulation is made from PP (Polypropylene). Electrode length 30 mm.
- CLS –23_ –12
- Insulated (coated) short bar electrode, for moderately aggressive electrically conductive liquid sensing (chemicals, water, moderately aggressive water solutions). Higher temperature resistance than variant “11”. The insulation is made from FEP (Tetrafl uoroethylene-Perfl uoro-Propylene). Electrode length 30 mm
- CLS –23_ –20
- Partly insulated rod electrode, for level detection of conductive and non-conductive liquids, partially resistant to vapours (water) condensation in the sensing area. The insulation is made from FEP. Vertical mounting; horizontal mounting (from the side) is possible for shorter electrodes (up to 200 mm). Electrode length from 50 mm to 1 m.
- CLS –23_ –21
- Fully insulated rod electrode, for universal use, for level detection of conductive liquids (water, water solutions). Resistant to vapours (water) condensation in the sensing area and partially resistant to medium spraying. The insulation is made from FEP. Vertical mounting; horizontal mounting (from the side) is possible for shorter electrodes (up to 200 mm). Electrode length from 50 mm to 1 m.
- CLS –23_ –30
- Uncoated removable rod electrode, for level detection of conductive and non-conductive liquids. Vertical mounting; horizontal mounting (from the side) is possible for shorter electrodes (up to 200 mm). Electrode length from 50 mm to 1 m.
SENSOR SETTINGS
The setting is done by placing magnetic pen MP–8 to sensitive spot M located on the front of the sensor. Short time attaching (up to 2 sec.) of the magnetic pen to the sensitive spot M makes the sensor open. Long time attaching (at least 4 sec.) of the pen when the level is changed, defi nes closed state of the sensor. In this way is set the sensitivity for the measured medium and switching modes SO (normally open) or SC (normally closed).
For detailed information please read at the instructions manual.
FACTORY DEFAULT SETTINGS:
Types CLS–23_–10; –20; –30 are set to detect mineral oil, CLS–23_–11; –12; –21 to detect water.
ELECTRICAL CONNECTION
CLS–23_–_–_–S–_
Positive pole (+ U) of power supply is connected through a load (relay) to brown (blue) wire or pin connector No. 1, negative pole is connected to white wire or pin connector No. 3.
CLS–23_–_–_–P–_
Positive pole (+ U) of power supply is connected to brown wire or pin connector No. 1, negative pole is connected to blue wire or pin connector No. 3. Load (relay) is connected to black wire or pin connector No. 2.
CLS–23_–_–_–R–_
Brown wire or pin connector No. 1 is connected to positive pole (+U) of Intrinsically safe supply unit. Blue wire or pin. connector No. 3 is connected to negative pole of Intrinsically safe supply unit.
Note:
The sensor output is protected against short circuits. Capacity loads and loads with low sleep resistance (bulb) the sensor evaluates as a short circuit.
In case of high ambient electromagnetic interference, parallel conductors with power lines, or lines at distances greater than 30 m, we recommend to use
shielded cable.
RANGE OF APPLICATION
Detection of various types of liquids – water, oils, coolants, water solutions, etc. Suitable for metal vessels, containers, tanks, sumps, pipes. Suitability for non-metallic containers (glass, plastic containers, etc.) please consult with the manufacturer.
CORRECT SPECIFICATION EXAMPLES
CLS–23N–10–A–S–G3/8 cable 5 m
- (N) For non-explosive areas; (10) Uncoated short bar electrode 30 mm, (A) Cable outlet with 5 m fi xed cable; (S) 2-wire electronic switch; (G3/8) Process connection with pipe thread G3/8”
CLS–23E–30–A–S–G1/2 E450 cable 10 m
- (E) Extended temperature range performance for non-explosive areas; (30) Uncoated removable rod electrode; (A) Cable outlet with 10 m fi xed cable; (S) 2-wire electronic switch; (G1/2) Process connection with pipe thread G1/2"; (E450) Electrode length 450 mm.
CLS–23NT–20–C–S–M18 E320
- (NT) High temperature variants for non-explosive areas; (20) Partly insulated rod electrode (FEP); (C) Electrically connection with connector; (S) 2-wire electronic switch; (M18) Process connection with metric thread M18x1.5; (E320) Electrode length 320 mm.
CLS–23Xi–11–C–R–NPT
- (Xi) Intrinsically safe for hazardous areas; (11) Insulated (coated) short bar (PP) electrode 30 mm (C) Electrically connection with connector; (R) NAMUR output type; (NPT) Process connection with sealing thread 1/2 – 14 NPT.
ACCESSORIES
Standard (included in the level sensors price)
- 1pc of Magnetic pen MP–8
- 1pc of Seal (Klingerit)
Optional (for extra charge)
- Extra cables (over the standard length 2 m)
- Non-rewirable connector plug M12 (“N” and “NT” variants)
- Rewirable connector plug M12 (“N” and “NT” variants)
- Steel or Stainless steel welding fl ange
- Other seals (PTFE, Al, etc.)
SAFETY, PROTECTIONS, COMPATIBILITY AND EXPLOSION PROOF
The level sensor is equipped with a protection against electric shock on electrode, polarity, overvoltage and short-term current overload on the output.
Electromagnetic compatibility is provided by conformity with standards EN 55011 / B, EN 61326-1, EN 61000-4-2 (8 kV), -4-3 (10 V/m), -4-4 (2 kV), -4-5 (1 kV) and -4-6 (10 V).
Explosion proof CLS–23Xi and XiT is examined by FTZÚ - AO210 Ostrava - Radvanice, certifi cate No. FTZÚ 12 ATEX 0106X.
