Ultrasonic Proximity Sensors

Ultrasonic proximity sensors are a type of non-contact sensor. They use transmitted or reflected ultrasonic waves to detect whether an object or material is present or absent. They are reliable and versatile and can be used reliably in almost all conditions.

How do they work?
These sensors work by emitting a short bust of ultrasonic sound at a specific frequency towards the target. When the target reflects the sound back to the sensor, the sensor measures the time it takes for the echo to return. The sensor will use the time it takes the soundwave to travel back to calculate the distance between the sensor and the object.

What are they used for?
Typical applications for these ultrasonic sensors include stacking height control, irregular part detection within hoppers and feeder bowls, automotive assembly and loop control. Other suitable applications include thread or wire break detection, robotic sensing, detection of people for counting and liquid level control.

Things to consider
When deciding which sensor you should choose, there are a few things that you should bear in mind. Ultrasonic proximity sensors can be affected by noise interference and some will have a blind zone at close proximity. The surface angle of the target, and the roughness of the target surface can also affect the sensor. Some materials such as cloth or carpeting can absorb soundwaves rather than reflecting them. The speed of sound can be affected by temperature and humidity which can impact the resolution and accuracy of the sensor.

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Description Price Detection Range Output Type Body Style Thread Size Transducer Frequency Diameter Communication Protocol Maximum AC Voltage Maximum DC Voltage Supply Voltage Terminal Type IP Rating Housing Material Reverse Polarity Protection
RS Stock No. 753-0511
Mfr. Part No.XX918A3C2M12
£124.00
Each
Units
50 → 500 mm Analogue Barrel M18 x 1 300kHz 18 mm - - 24V 12 → 24 V dc M12 - 4 Pin IP67 Valox Yes
RS Stock No. 612-2229
Mfr. Part No.XX518A3PAM12
£176.00
Each
Units
50 → 500 mm PNP-NO Barrel M18 x 1 300kHz 18 mm - - 24V 12 → 24 V dc M12 - 4 Pin IP67 Plastic Yes
RS Stock No. 612-2112
Mfr. Part No.XX930A3A2M12
£456.00
Each
Units
300 → 8000 mm Analogue Barrel M30 x 1.5 75kHz 30 mm - - 24V 15 → 24 V dc M12 - 4 Pin IP65 Plastic Yes
RS Stock No. 742-0928
Mfr. Part No.XX930A2A2M12
£276.00
Each
Units
100 → 2000 mm Analogue Barrel M30 x 1.5 - - - - - - M12 Connector IP65 Plastic Yes
RS Stock No. 674-2038
Mfr. Part No.XUVU06M3KSNM8
£285.00
Each
Units
0 → 3 mm PNP/NPN-2NO/NC Block - - - - - 30V 10 → 30 V dc M8 - 4 Pin IP65 Metal Yes
RS Stock No. 612-2162
Mfr. Part No.XX930A3A1M12
£449.00
Each
Units
300 → 8000 mm Analogue Barrel M30 x 1.5 75kHz 30 mm - - 24V 15 → 24 V dc M12 - 4 Pin IP65 Plastic Yes
RS Stock No. 753-0517
Mfr. Part No.XX918A3F1M12
£156.00
Each
Units
50 → 500 mm Analogue Barrel M18 x 1 300kHz 18 mm - - 24V 12 → 24 V dc M12 - 4 Pin IP67 Valox Yes
RS Stock No. 764-0620
Mfr. Part No.XXV18B1NAL10
£94.00
Each
Units
3 50 mm NPN-NO Barrel M18 x 1 360kHz 18 mm - - 36V 12 24 V dc Cable IP67 Brass Yes
RS Stock No. 764-0614
Mfr. Part No.XXV18B1PBM12
£85.00
Each
Units
3 → 50 mm PNP-NC Barrel M18 x 1 360kHz 18 mm - - 36V 12 → 24 V dc M12 - 4 Pin IP67 Brass Yes
RS Stock No. 612-2140
Mfr. Part No.XX930A1A1M12
£293.00
Each
Units
50 → 1000 mm Analogue Barrel M30 x 1.5 200kHz 30 mm - - 24V 15 → 24 V dc M12 - 4 Pin IP65 Ultem Yes
RS Stock No. 764-0605
Mfr. Part No.XXV18B1PAM12
£87.00
Each
Units
3 50 mm PNP-NO Barrel M18 x 1 360kHz 18 mm - - 36V 12 24 V dc M12 - 4 Pin IP67 Brass Yes
RS Stock No. 612-2190
Mfr. Part No.XX7V1A1PAM12
£157.00
Each
Units
50 → 500 mm PNP-NO Block - 300kHz - - - 24V 12 → 24 V dc M12 - 4 Pin IP67 Plastic Yes
RS Stock No. 612-2241
Mfr. Part No.XX512A2PAM8
£250.00
Each
Units
6 100 mm PNP-NO Barrel M18 x 1 500kHz - - - 24V 12 24 V dc M8 - 3 Pin IP67 Plastic Yes
RS Stock No. 612-2156
Mfr. Part No.XX7F1A2PAL01M12
£233.00
Each
Units
6 → 100 mm PNP-NO Block - 500kHz - - - 24V 12 → 24 V dc M12 - 4 Pin with cable IP67 Plastic Yes
RS Stock No. 612-2134
Mfr. Part No.XX930A1A2M12
£305.00
Each
Units
50 → 1000 mm Analogue Barrel M30 x 1.5 200kHz 30 mm - - 24V 15 → 24 V dc M12 - 4 Pin IP65 Ultem Yes
RS Stock No. 816-7498
Mfr. Part No.VM18NNO
£120.69
Each
Units
50 → 500 mm NPN-NO Barrel - - 18 mm - - 24V 12 → 24 V dc Cable IP67 PBT -
RS Stock No. 816-7476
Mfr. Part No.VM18PNOQ
£120.69
Each
Units
50 500 mm PNP-NO Barrel - - 18 mm - - 24V 12 24 V dc M12 Connector IP67 PBT -
RS Stock No. 816-3698
Mfr. Part No.SM500A000
£869.56
Each
Units
51 → 635 mm PNP/NPN-NO/NC Block - 200kHz 44 mm - - 24V 12 → 24 V dc Cable IP67 Ultem Yes
RS Stock No. 764-0624
Mfr. Part No.XXV18B1NAM12
£87.00
Each
Units
3 → 50 mm NPN-NO Barrel M18 x 1 360kHz 18 mm - - 36V 12 → 24 V dc M12 - 4 Pin IP67 Brass Yes
RS Stock No. 753-0536
Mfr. Part No.XX230A20PA00M12
£268.00
Each
Units
100 2000 mm PNP NO/NC Barrel M30 x 1.5 200kHz 30 mm - - 24V 12 24 V dc M12 - 4 Pin IP67 Ultem Yes