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 Maximum AC Voltage Maximum DC Voltage Supply Voltage Terminal Type IP Rating Housing Material Reverse Polarity Protection Short Circuit Overload Protection
RS Stock No. 612-2162
Mfr. Part No.XX930A3A1M12
HK$4,991.23
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 Yes
RS Stock No. 612-2112
Mfr. Part No.XX930A3A2M12
HK$5,129.91
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 Yes
RS Stock No. 764-0605
Mfr. Part No.XXV18B1PAM12
HK$779.77
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 Yes
RS Stock No. 612-2140
Mfr. Part No.XX930A1A1M12
HK$3,044.28
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 Yes
RS Stock No. 753-0511
Mfr. Part No.XX918A3C2M12
HK$1,374.55
Each
units
50 → 500 mm Analogue Barrel M18 x 1 300kHz 18 mm - 24V 12 → 24 V dc M12 - 4 Pin IP67 Valox Yes Yes
RS Stock No. 612-2156
Mfr. Part No.XX7F1A2PAL01M12
HK$2,107.58
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. 612-2241
Mfr. Part No.XX512A2PAM8
HK$2,241.74
Each
units
6 → 100 mm PNP-NO Barrel M18 x 1 500kHz - - 24V 12 → 24 V dc M8 - 3 Pin IP67 Plastic Yes Yes
RS Stock No. 816-7489
Mfr. Part No.VM18PNO
HK$1,139.98
Each
units
50 → 500 mm PNP-NO Barrel - - 18 mm - 24V 12 → 24 V dc Cable IP67 PBT - -
RS Stock No. 816-3698
Mfr. Part No.SM500A000
HK$8,486.03
Each
units
51 → 635 mm PNP/NPN-NO/NC Block - 200kHz 44 mm - 24V 12 → 24 V dc Cable IP67 Ultem Yes Yes
RS Stock No. 753-0494
Mfr. Part No.XX630S1NCM12
HK$6,522.87
Each
units
1 m NPN NO/NC Barrel M30 x 1.5 200kHz 30 mm - 24V 12 → 24 V dc 4-Pin M12 Connector IP67 Stainless Steel Yes Yes
RS Stock No. 753-0520
Mfr. Part No.XX518A3PAL2
HK$1,630.00
Each
units
50 → 500 mm PNP-NO Barrel M18 x 1 300kHz 18 mm - 24V 12 → 24 V dc Pre-Wired IP67 Valox Yes Yes
RS Stock No. 177-8890
Mfr. Part No.XXA18P1PM12
HK$2,843.33
Each
units
100 → 1000 mm PNP-NO/NC Barrel M18 x 1 200kHz 18 mm - 30V 12 → 24 V dc M12 - 5 Pin IP65, IP67 PBT Yes Yes
RS Stock No. 753-0505
Mfr. Part No.XX218A3PHM12
HK$1,147.50
Each
units
50 → 500 mm PNP-NO Barrel M18 x 1 300kHz 18 mm - 24V 12 → 24 V dc M12 - 4 Pin IP67 Valox Yes Yes
RS Stock No. 764-0591
Mfr. Part No.XXV18B1PAL5
HK$814.23
Each
units
3 → 50 mm PNP-NO Barrel M18 x 1 360kHz 18 mm - 36V 12 → 24 V dc Cable IP67 Brass Yes Yes
RS Stock No. 742-0824
Mfr. Part No.XX930S1A2M12
HK$3,670.00
Each
units
50 → 1000 mm Analogue Barrel M30 x 1.5 200kHz 30 mm - 24V 15 → 24 V dc M12 Connector IP65 Metal Yes Yes
RS Stock No. 177-8893
Mfr. Part No.XXA18S1PM12
HK$3,719.37
Each
units
100 → 1000 mm PNP-NO/NC Barrel M18 x 1 200kHz 18 mm - 30V 12 → 24 V dc M12 - 5 Pin IP65, IP67 Stainless Steel 316L Yes Yes
RS Stock No. 177-8886
Mfr. Part No.XXA18B1AM12
HK$3,881.11
Each
units
100 → 1000 mm Analogue Barrel M18 x 1 200kHz 18 mm - 30V 12 → 24 V dc M12 - 5 Pin IP65, IP67 Brass Yes Yes
RS Stock No. 695-6858
Mfr. Part No.XX630A1KAM12
HK$3,666.61
Each
units
50 → 1000 mm PNP/NPN Barrel M30 x 1.5 200kHz 35 mm - 24V 12 → 24 V dc M12 - 4 Pin IP67 Plastic Yes Yes
RS Stock No. 177-8891
Mfr. Part No.XXA18P1VM12
HK$3,411.83
Each
units
100 → 1000 mm Analogue Barrel M18 x 1 200kHz 18 mm 10V 30V 24 V dc M12 - 5 Pin IP65, IP67 PBT Yes Yes
RS Stock No. 177-8903
Mfr. Part No.XXS18S1VM12
HK$3,719.37
Each
units
100 → 1000 mm Analogue Barrel M18 x 1 200kHz 18 mm 10V 30V 12 → 24 V dc M12 - 5 Pin IP65, IP67 Stainless Steel 316L Yes Yes