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AECO
CAPACITIVE SENSORS

CAPACITIVE SENSORS

Product catalog summary

Working Principle
Capacitive sensors function through an oscillator transistor that reacts to changes in capacitance when materials contact the sensor's active surface. This change activates the oscillator, altering the final stage condition to control an external load. A potentiometer allows for fine-tuning of the switching distance. These sensors are protected against polarity changes, electrical disturbances, and short circuits, and are available with rapid or delayed switching. The plastic components are made from Makrolon, known for being non-toxic, non-static, and abrasion-resistant.

Choice of a Capacitive Sensor
When selecting a capacitive sensor, consider the material's form and composition. Non-embeddable models are recommended for a larger sensitive field, reducing the need for maximum sensitivity settings, which can be influenced by temperature, humidity, and dust. For flush mounting, avoid setting sensitivity too high. Totally screened sensors require double the sensitivity of partially screened ones for the same distance, operating under more critical conditions.

Applications
Capacitive sensors are used in applications where the material is not necessarily metal, such as limit controls for liquids, powders, and granules, and for sensing or counting objects.

Sensitivity Adjustment
Sensitivity should be adjusted in the operational position, between minimum and maximum values. Air acts as a dielectric, and humidity can affect sensitivity if set too finely. The sensing range varies with material and temperature changes. Sensitivity increases with clockwise trimmer rotation and decreases with anti-clockwise rotation. If mounted on metallic support, ensure it is earthed to avoid sensing distance alterations.

Delayed Models
These sensors offer an adjustable time delay for energization and de-energization, available in Ø 18 and 30 mm models, used in industrial applications like the food industry. Time delay adjustment is done after sensitivity setting, with the device powered. The delay increases with clockwise trimmer rotation, indicated by a flashing LED.

Available Range and Functions
Models like SC18SP-AE10 and SC30SP-AE25 offer delay functions for energization and de-energization with N.O. and N.C. contacts. M 18 and M 30 versions come with NO contact, changeable to NC using a selector switch.

Specifications

Housing: Plastic (SC30SP) or nickelled brass (SC30SM).
Models: 2-wire AC/DC (Version-A) and 4-wire DC (Version-C).
Temperature Range: -20°C to +70°C for standard models; -200°C to +250°C for high-temperature models.
IP Rating: IP65 for standard models, IP68 for high-temperature models.
Switching Distance: Adjustable, with specific distances for different models.

Features

Indicators: Yellow LED for status, blue LED for delay time indication.
Adjustments: Sensitivity and delay settings are adjustable, with NO/NC configuration options.
Protection: Short circuit protection included.

High-Temperature Models

These models separate the electronic portion from the sensing part, allowing operation in environments up to 250°C.
Used for level control of hot materials like liquids, oils, powders, and plastic granules.
Connection cables are available in standard lengths and are resistant to high temperatures.

Installation Instructions

Ensure metallic containers are earthed and connect the amplifier terminal to the ground.
For non-metallic containers, both the amplifier terminal and sensor housing should be earthed.
Connection wires between the sensor and amplifier should be separated from power supply cables.

Programmable Functions

Functions include delay on energization and de-energization with both normally open (NO) and normally closed (NC) contacts.
Programmable via a trimmer, allowing for customization of delay times and sensitivity settings.

Functions Overview

TE NC Function: The N.C. contact opens when material enters the sensitive zone and closes after a set time once the material exits.
TD NO Function: The N.O. contact closes when material enters and opens after a set time once the material exits.
TD NC Function: The N.C. contact opens after a set time when material enters and closes instantly when it exits.

Refer to the programmable functions table for implementation details.

Installation Procedure

Protection housing (muffola) is used with M30 capacitive sensors for waterproof protection.
Made from non-toxic POM plastic, suitable for food applications.
Temperature range: -20 to +70°C; max pressure: 8 bar; threaded connection: 1”1/2.
Facilitates sensor replacement and protects against abrasion.
Compatible with ATEX approved sensors for explosive zone 22 environments.

Specifications

Material: Natural Ultraform S2320.
Temperature and pressure limits as specified above.
Conforms to CE Directive 94/96 for explosive environments.

Product Codes

SCM-P: ACC000002
SCM-SP/SM: ACC000011
SCM-R: ACC000004
SCM-K: ACC000001

Various sensor codes are listed for different SCM models.

Contact Information

Aeco s.r.l., via G. Leopardi, 5 - 20065 Inzago (Milano) ITALY
Tel: ++39 02 954381 - Fax: ++39 02 9548528
Email: [email protected]
Website: www.aecosensors.com

Catalog excerpts

SENSORI CAPACITIVI CAPACITIVE SENSORS

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SENSORI DI PROSSIMITÀ CAPACITIVI SERIE SC PROXIMITY CAPACITIVE SENSORS SC SERIES WORKING PRINCIPLE I sensori di prossimità capacitivi contengono un oscillatore a transistor situato nella parte anteriore. Il circuito oscillante R-C (resistenza-condensatore) viene influenzato dalla variazione di capacità, infatti quando un materiale qualsiasi solido o liquido (acqua, vetro, legno, metallo, caffé, polveri, ecc.) interessa la superficie attiva del sensore, la capacità aumenta mettendo in azione l’oscillatore fino ad invertire la soglia del trigger, inducendo un cambiamento di condizione dello stadio...

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SENSORI DI PROSSIMITÀ CAPACITIVI SERIE SC PROXIMITY CAPACITIVE SENSORS SC SERIES MODELLI AD INTERVENTO TEMPORIZZATO DELAYED MODELS Sono sensori capacitivi che forniscono il segnale di uscita al carico esterno con una temporizzazione regolabile alla eccitazione o alla diseccitazione con funzioni N.O. oppure N.C. Vengono forniti nei modelli diam. 18 e 30 mm ed in corrente alternata. Le gamme di temporizzazione disponibili sono le seguenti: 0 ÷ 1 min. / 0 ÷ 10 min. nei modelli diam. 18 e 30. Un trimmer di regolazione dei tempi, permette l’impostazione del tempo desiderato. Questi sensori possono...

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SENSORI DI PROSSIMITÀ CAPACITIVI SERIE SC PROXIMITY CAPACITIVE SENSORS SC SERIES SENSORI IN ESECUZIONE C PER CORRENTE CONTINUA (4 FILI) SENSORS VERSION Sono sensori amplificati in corrente continua che oltre all’oscillatore hanno incorporato anche l’amplificatore di uscita. Vengono forniti a 4 fili con funzione antivalente nelle versioni NPN o PNP. In questa esecuzione i sensori presentano come caratteristiche standard la protezione contro il corto circuito permanente del carico, sicurezza assoluta contro l’inversione di polarità e protezione ai picchi prodotti dal disinserimento dei carichi...

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CAPACITIVE SENSORS APPLICATION EXAMPLES SENSORI CAPACITIVI ESEMPI DI APPLICAZIONE CONTROLLO DI LIVELLO A CONTATTO DI MATERIALI SOLIDI O LIQUIDI CONTACT LEVEL CONTROL FOR SOLIDS OR LIQUIDS CONTROLLO DI LIVELLO ATTRAVERSO SERBATOI NON METALLICI LEVEL CONTROL FOR NON METALLIC CONTAINERS CONTROLLO PRESENZA MATERIALI SOLIDI O LIQUIDI ATTRAVERSO IMBALLI O CONTENITORI NON METALLICI SOLID OR LIQUID MATERIAL PRESENCE CONTROL WHICH ARE INSIDE PACKAGING OR NON METALLIC CONTAINERS CONTROLLO DI LIVELLO IN SERBATOI METALLICI ATTRAVERSO FINESTRELLA IN VETRO O PLASTICA LEVEL CONTROL FOR METAL CONTAINERS USING...

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SENSORI CAPACITIVI M18 x 1 • CAPACITIVE SENSORS M18 x 1 • CUSTODIA CILINDRICA PLASTICA O METALLICA • CYLINDRICAL HOUSING PLASTIC OR METALLIC • MODELLI 4 FILI IN C.C. - ESECUZIONE-C • 4 WIRES D.C. MODELS - VERSION-C TOTALMENTE SCHERMATI EMBEDDABLE (FLUSH MOUNTING) PARZIALMENTE SCHERMATI NOT EMBEDDABLE (NON FLUSH MOUNTING) CARATTERISTICHE TECNICHE TECHNICAL CHARACTERISTICS Dimensioni / Dimensions MODELLI CON CAVO MODELS WITH CABLE MODELLI CON CONNETTORE MODELS WITH CONNECTOR Tensione continua (ond. residua ≤ 10%) Continuous voltage (residual ripple ≤10%) Tensione alternata 50÷60 Hz Alternating...

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SENSORI CAPACITIVI M18 x 1 • CAPACITIVE SENSORS M18 x 1 • CUSTODIA CILINDRICA PLASTICA SC18SP O METALLICA SC18SM • CYLINDRICAL HOUSING PLASTIC SC18SP OR METALLIC SC18SM SC18SP • MODELLI 2 FILI IN C.A. - ESECUZIONE-A • 2 WIRES A.C. MODELS - VERSION-A • INTERVENTO ISTANTANEO O TEMPORIZZATO • STANDARD AND DELAYED MODELS Regolazione ritardo Regolazione ritardo 20 ÷ 250 (Valori massimi assoluti / absolute maximum ratings) ≤ 20 Max= 10 o in funzione del ritardo / In relation to delay 10 (Corrente minima di rilascio / min. release current) 1.5 Presente Incorporated Led giallo indicazione di stato -...

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SENSORI CAPACITIVI M30 x 1,5 • CAPACITIVE SENSORS M30 x 1,5 • CUSTODIA CILINDRICA PLASTICA SC30SP O METALLICA SC30SM • CYLINDRICAL HOUSING PLASTIC SC30SP OR METALLIC SC30SM • MODELLI 4 FILI IN C.C. - ESECUZIONE-C • 4 WIRES D.C. MODELS - VERSION-C TOTALMENTE SCHERMATI EMBEDDABLE (FLUSH MOUNTING) Regolazione sensibilità Sensitivity adjustment Regolazione sensibilità Sensitivity adjustment Led PARZIALMENTE SCHERMATI NOT EMBEDDABLE (NON FLUSH MOUNTING) CARATTERISTICHE TECNICHE TECHNICAL CHARACTERISTICS Cavo Cable Regolazione sensibilità Sensitivity adjustment Regolazione sensibilità Sensitivity adjustment...

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SENSORI CAPACITIVI M30 x 1,5 • CAPACITIVE SENSORS M30 x 1,5 • CUSTODIA CILINDRICA PLASTICA SC3OSP METALLICA SC30SM • CYLINDRICAL HOUSING PLASTIC SC30SP OR METALLIC SC30SM SC30SP 1 Regolazione sensibilità Sensitivity adjustment • INTERVENTO ISTANTANEO O TEMPORIZZATO • STANDARD AND DELAYED MODELS Regolazione sensibilità Sensitivity adjustment 17 Regolazione sensibilità Sensitivity adjustment Regolazione ritardo selezione NO/NC Delay setting NO/NC setting Attacco HM12 H Plug M12 Cavo Cable • MODELLI 2 FILI IN C.A./C.C. - ESECUZIONE-A • 2 WIRES A.C./D.C. MODELS - VERSION-A Regolazione sensibilità...

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SENSORI CAPACITIVI M30 x 1,5 • CAPACITIVE SENSORS M30 x 1,5 • CUSTODIA CILINDRICA PLASTICA O METALLICA • CYLINDRICAL HOUSING PLASTIC OR METALLIC • MODELLI 4 FILI IN C.C. - ESECUZIONE-C • 4 WIRES D.C. MODELS - VERSION-C TOTALMENTE SCHERMATI EMBEDDABLE (FLUSH MOUNTING) PARZIALMENTE SCHERMATI NOT EMBEDDABLE (NON FLUSH MOUNTING) CARATTERISTICHE TECNICHE TECHNICAL CHARACTERISTICS Dimensioni / Dimensions SC30M - C20 NPN NO+NC K SC30M - CE25 NPN NO+NC K SC30P - CE25 NPN NO+NC K CAP000031 MODELLI CON CONNETTORE K MODELS WITH K CONNECTOR SC30M - C20 PNP NO+NC K SC30M - CE25 PNP NO+NC K SC30P - CE25 PNP...

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SENSORI CAPACITIVI M30 x 1,5 • CAPACITIVE SENSORS M30 x 1,5 • CUSTODIA CILINDRICA PLASTICA O METALLICA • CYLINDRICAL HOUSING PLASTIC OR METALLIC • MODELLI 2 FILI IN C.A./C.C. - ESECUZIONE-A • 2 WIRES A.C./D.C. MODELS - VERSION-A • CUSTODIA PLASTICA / USCITA A RELÈ IN SCAMBIO / ESECUZIONE-R • HOUSING PLASTIC / RELAY OUTPUT CHANGEOVER / VERSION-R NO/NC PROGRAMMABILE NO/NC PROGRAMMABLE NO/NC PROGRAMMABILE NO/NC PROGRAMMABLE NO/NC PROGRAMMABILE NO/NC PROGRAMMABLE USCITA RELÈ IN SCAMBIO RELAY CHANGEOVER Contatto scambio 1A-220Vca Changeover 1A-220Vac 10 (Corrente minima di rilascio / min. release...

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