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 IP Rating Maximum DC Voltage Mounting Style Length Interface Width Depth Maximum AC Voltage
RS Stock No. 859-2875
Mfr. Part No.CD50CNF06NO
£36.24
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Block - NPN-NO 6 mm 10 → 30 V dc Cable IP67 30V Non Flush 30mm - 50mm 7mm -
RS Stock No. 858-2660
Mfr. Part No.EC5525PPAP-1
£221.72
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Units
Block - PNP-NO/NC 25 mm 10 → 40 V dc M12 - 4 Pin IP67 40V Flush, Non Flush 35mm - 68.3mm 15mm -
RS Stock No. 856-8434
Mfr. Part No.EC3025TBAPL
£253.65
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Units
Barrel M30 NO/NC 25 mm 20 → 265 V ac Cable IP67 - Non Flush 91mm - - - 265V
RS Stock No. 859-2973
Mfr. Part No.EC3025TBAPL-6
£271.75
Each
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Barrel M12 NO/NC 25 mm 20 → 265 V ac M12 - 4 Pin IP67 - Non Flush 91mm - - - 265V
RS Stock No. 857-7264
Mfr. Part No.CA18CLN12TC
£194.13
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Barrel - NO/NC 12 mm 20 → 250 V ac Cable IP67 - Non Flush 87mm - - - 250V
New
RS Stock No. 188-5253
Mfr. Part No.CA30CAN25BPM1IO
£66.96
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Units
Barrel M30 PNP/NPN-NO/NC 25 mm 10 → 40 V dc M12 - 4 Pin IP67, IP68, IP69K 40V Non Flush 74mm IO-Link - - -
New
RS Stock No. 188-5251
Mfr. Part No.CA30CAF16BPM1IO
£68.57
Each
Units
Barrel M30 PNP/NPN-NO/NC 16 mm 10 → 40 V dc M12 - 4 Pin IP67, IP68, IP69K 40V Flush 74mm IO-Link - - -
New
RS Stock No. 188-5248
Mfr. Part No.CA18CAN12BPA2IO
£62.10
Each
Units
Barrel M18 PNP/NPN-NO/NC 12 mm 10 → 40 V dc M12 - 4 Pin IP67, IP68, IP69K 40V Non Flush 86mm IO-Link - - -
New
RS Stock No. 188-5252
Mfr. Part No.CA30CAN25BPA2IO
£65.31
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Units
Barrel M30 PNP/NPN-NO/NC 25 mm 10 → 40 V dc M12 - 4 Pin IP67, IP68, IP69K 40V Non Flush 81mm IO-Link - - -
New
RS Stock No. 188-5250
Mfr. Part No.CA30CAF16BPA2IO
£66.96
Each
Units
Barrel M30 PNP/NPN-NO/NC 16 mm 10 → 40 V dc M12 - 4 Pin IP67, IP68, IP69K 40V Flush 81mm IO-Link - - -
New
RS Stock No. 188-5247
Mfr. Part No.CA18CAF08BPM1IO
£65.31
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Barrel M18 PNP/NPN-NO/NC 8 mm 10 → 40 V dc M12 - 4 Pin IP67, IP68, IP69K 40V Flush 85mm IO-Link - - -
New
RS Stock No. 188-5249
Mfr. Part No.CA18CAN12BPM1IO
£63.65
Each
Units
Barrel M18 PNP/NPN-NO/NC 12 mm 10 → 40 V dc M12 - 4 Pin IP67, IP68, IP69K 40V Non Flush 85mm IO-Link - - -
New
RS Stock No. 188-5246
Mfr. Part No.CA18CAF08BPA2IO
£63.65
Each
Units
Barrel M18 PNP/NPN-NO/NC 8 mm 10 → 40 V dc M12 - 4 Pin IP67, IP68, IP69K 40V Flush 86mm IO-Link - - -
RS Stock No. 856-8365
Mfr. Part No.CA18HLN12PA
£205.33
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Barrel - PNP-NO/NC 12 mm 10 → 40 V dc Cable IP67 40V Non Flush 87mm - - - -