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Capacitive sensors detect both metal and non-metal objects, can sense through insulating materials, and are often used to detect fill levels of liquids, pellets, and powders through container walls. They are available in round, tubular, or rectangular shapes, with sensing distances up to 40mm.
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Capacitive Proximity Sensors
Category Selection
Capacitive proximity sensors are non-contact sensors that generate an electrostatic field to detect metal and non-metal objects. Using two conduction plates, they sense the change in capacitance when an object moves within their sensing range. They can even sense through insulating materials, such as wood or plastic, and offer an ideal solution for non-invasive detection of liquid, pellet, and powder levels as they can be mounted externally and sense through storage container walls. Flush-mounted sensors are embeddable, while non-flush sensors allow longer sensing distances, are non-embeddable, and their sensing face must protrude from the mounting substrate.
- Sensing distances range from 1.5 to 25 mm (flush mount) and 2 to 40 mm (non-flush (extended sensing face))
- AutomationDirect, Balluff, Micro Detectors, and ProSense brands
- Normally open or normally closed, NPN and PNP logic outputs available
- LED status indicators verify operation at the sensor
For part listings and specifications, go to Shop Now
8mm Tubular
8mm tubular stainless-steel housed capacitive proximity sensors offer sensing distances up to 3mm (depending on mounting style) and easy potentiometer adjustment.
- 1.5mm (flush) and 3mm (non-flush) sensing distances
- ProSense brand
- N.O. or N.C. output models
- PNP or NPN models
- 100 Hz switching frequency
- 11 to 30 VDC operating voltage
- 2m axial cable or M8 quick-disconnect connection (purchase cable separately)
- IP65 or IP67 protection rating
12mm Tubular
12mm tubular capacitive proximity sensors are available in rugged thermoplastic or stainless steel housings and offer sensing distances up to 12mm (depending on mounting style) and easy potentiometer adjustment.
- Up to 6mm (flush) or 12mm (non-flush) sensing distances
- AutomationDirect and Balluff brands
- N.O. or N.C. output models
- PNP, NPN, or NPN/PNP models
- 50 or 100 Hz switching frequency
- 10 to 30, 12 to 30, or 10 to 36 VDC operating voltage
- 2m axial cable or M12 quick-disconnect connection (purchase cable separately)
- IP65 or IP67 protection rating
18mm Tubular
18mm tubular capacitive proximity sensors feature rugged thermoplastic or stainless steel housings with protection ratings up to IP69K. They offer sensing distances up to 15mm (depending on mounting style) and easy potentiometer or pushbutton sensitivity adjustment.
- Up to 8mm (flush) or 15mm (non-flush) sensing distances
- AutomationDirect and Balluff brands
- N.O., N.C., or N.O./N.C. selectable output models
- NPN or PNP models
- 10, 30, or 100 Hz switching frequency
- 10 to 30, 10 to 35, or 10 to 36 VDC operating voltage
- 2m axial cable or M12 quick-disconnect (purchase cable separately)
- IP65/67/69K protection ratings available
30mm Tubular
30mm tubular capacitive proximity sensors are available with metal or plastic housings and offer sensing distances up to 40mm (depending on mounting style), potentiometer or pushbutton sensitivity adjustment, and protection ratings up to IP69K.
- Up to 20mm (flush) or 40mm (non-flush) sensing distances
- AutomationDirect, Balluff, and Micro Detectors brands
- N.O., N.C., or N.O./N.C. selectable output models
- PNP, NPN, or NPN/PNP models
- 10 or 100 Hz switching frequency
- 10 to 30, 10 to 35, or 10 to 36 VDC; or 20-250 VDC/30-250 VAC operating voltage
- 2m axial cable, M12 quick-disconnect, or 1/2in Micro AC quick-disconnect (AC/DC model only) (purchase Q/D cables separately)
- IP65/66/67/69K protection ratings available
50mm Round
50mm round capacitive proximity sensors feature a low-profile, rugged thermoplastic housing with a large sensing area. They offer 25mm sensing distances and easy potentiometer sensitivity adjustment.
- 25mm (flush) sensing distance
- Balluff brand
- N.O. or N.C. selectable outputs
- PNP or NPN models
- 50 Hz switching frequency
- 10 to 30 VDC operating voltage
- 2m axial cable or M8 quick-disconnect (purchase cable separately)
- IP65 or IP67 protection rating
Small Rectangular
Small rectangular capacitive proximity sensors feature low-profile housings, ideal for sight glass applications, and sensing distances up to 20mm (depending on mounting style) with easy pushbutton or potentiometer sensitivity adjustment.
- Up to 20mm (flush) or 12mm (non-flush) sensing distance
- AutomationDirect and Balluff brands
- N.O./N.C. selectable output
- PNP or NPN models
- 10, 50, or 100 Hz switching frequency
- 10 to 30, 12 to 30, or 10 to 36 VDC operating voltage
- Rugged thermoplastic housing
- 2m axial cable, or M8 or M12 quick-disconnect (purchase cable separately)
- IP65/67 protection rating
Capacitive Proximity Accessories
A variety of mounting brackets and adapters are available for affixing capacitive proximity sensors including axial, right-angle, and swivel-mount brackets with plastic, plated-steel, or stainless-steel constructions. Spare hex nuts are also available.
Sensor Tester
Sensor testers save time by determining if a sensor is functional before installation. This unit is lightweight and compact so it can be stored in a desk drawer and carried in a pocket. It includes a rechargeable battery and micro-USB charging cable.
- Fast field check of various DC sensor types
- LED and acoustic indicator
- 24 VDC sensor supply voltage
- Current supply to 100 mA
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