Capacitive Proximity Sensors

Capacitive proximity sensors are a type of sensor that can detect metallic and non-metallic materials. They can detect and measure materials that are conductive or have a greater dielectric constant than air. They are able to detect materials in solid form, in powder form or in granulate.
How do they work?
Capacitive sensors use an electrical field to detect objects. Any changes in capacitance in the sensing area are detected by the sensor, which then changes state.
What are they used for?
Capacitive proximity sensors are incredibly versatile as they are able to sense both ferrous and non-ferrous materials. These sensors are frequently found within the automotive industry, in the food industry and within storage and conveyor systems. Capacitive proximity sensors can be used to detect liquid through non-ferrous materials such as glass or plastic. Typical applications include the induction moulding process, liquid level detection and material level control.
Things to consider
Capacitive proximity sensors are ideal for sensing all sorts of materials, but you must keep them away from non-target materials. Non-target materials can potentially interfere with the sensor, and provide inaccurate or incorrect readings.
Capacitive proximity sensors have an excellent life span and are highly reliable. They are resistant to fault and contaminants such as dust and spray particles have very little impact on them. However, you should bear in mind that they can be a little slower to provide a reading that inductive sensors.

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Description Price Body Style Thread Size Output Type Detection Range Supply Voltage Terminal Type Communication Protocol IP Rating Maximum DC Voltage Mounting Style Length Interface Width Depth
RS Stock No. 127-8116
Mfr. Part No.CM18-08BPP-EW1
BrandSick
$192.50
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units
Barrel M18 x 1 PNP-NO/NC 8 mm 10 → 36 V dc Cable - IP68, IP69K 36V Flush 86mm - 18mm -
RS Stock No. 837-7642
Mfr. Part No.BC10-QF5.5-AP6X2/S250
BrandTurck
$312.17
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Block - PNP-NO 10 mm 10 → 30 V dc Cable - IP67 30V Flush 50.3mm - 20.3mm 5.5mm
RS Stock No. 188-5246
Mfr. Part No.CA18CAF08BPA2IO
$249.98
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Barrel M18 x 1 PNP/NPN-NO/NC 8 mm 10 → 40 V dc M12 - 4 Pin IO-LINK IP67, IP68, IP69K 40V Flush 86mm IO-Link - -
RS Stock No. 768-5728
Mfr. Part No.CFDK 25G1125/LN6
BrandBaumer
$267.72
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Block - PNP-NO/NC 15 mm 10 → 30 V dc Cable - IP65 30V Non Flush 52.4mm - 25mm 6mm
RS Stock No. 814-0339
Mfr. Part No.KF5001
$233.57
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Barrel M12 x 1 PNP-NO 6 mm 10 → 36 V dc M12 - 4 Pin - IP65 36V Non Flush 61.2mm - - -
RS Stock No. 822-4513
Mfr. Part No.E2K-X4MF1
BrandOmron
$222.02
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Barrel M12 x 1 PNP-NO 4 mm 10 → 30 V dc Cable - IP66 30V Non Flush 80mm - 10.7mm -
RS Stock No. 144-4448
Mfr. Part No.KI5311
$179.95
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Barrel M30 x 1.5 PNP-NO 24 mm 10 → 30 V dc M12 - 4 Pin IO-LINK IP65, IP67, IP69K 30V Flush 92mm IO-Link - -
RS Stock No. 902-7408
Mfr. Part No.BCS M12T4D-XXS40C-EP02-GZ01-002
BrandBALLUFF
$205.15
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Barrel M12 x 1 Amplifier Interface 4 mm 4 → 8 V dc Cable - IP67 8V Flush 30mm - - -
RS Stock No. 902-7401
Mfr. Part No.BCS M12T4D1-XXS80G-EP02-GZ01-002
BrandBALLUFF
$182.29
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Barrel M12 x 1 Amplifier Interface 8 mm 4 → 8 V dc Cable - IP67 8V Non Flush 30mm - - -
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