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. 446-0232
Mfr. Part No.UNDK 30P1712/S14
BrandBaumer
HK$3,475.42
Each
units
60 → 400 mm PNP-NO Block - 400kHz - - 30V 12 → 30 V dc M12 Connector IP67 Die Cast Zinc Yes Yes
RS Stock No. 446-0226
Mfr. Part No.UNDK 20P6914/S35A
BrandBaumer
HK$3,113.63
Each
units
10 → 200 mm PNP-NO Block - 380kHz - - 30V 12 → 30 V dc M8 Connector IP67 PET Yes Yes
RS Stock No. 338-9930
Mfr. Part No.UNDK 30U6103/S14
BrandBaumer
HK$3,786.04
Each
units
100 → 1000 mm Analogue Block - 240kHz - - 30V 15 → 30 V dc M12 Connector IP67 Die Cast Zinc Yes Yes
RS Stock No. 203-7098
Mfr. Part No.UNDK 30P1703/S14
BrandBaumer
HK$3,475.42
Each
units
100 → 1000 mm PNP-NO Block - 240kHz - - 30V 12 → 30 V dc M12 Connector IP67 Die Cast Zinc Yes Yes
RS Stock No. 214-707
Mfr. Part No.UNDK 20U 6912 S35A
BrandBaumer
HK$3,633.89
Each
units
60 → 400 mm Analogue Block - 290kHz - - 30V 15 → 30 V dc M8 Connector IP67 PET Yes Yes
RS Stock No. 530-794
Mfr. Part No.UNDK 10P 8914 S35A
BrandBaumer
HK$3,715.52
Each
units
10 → 200 mm PNP-NO/NC Block - 380kHz - - 30V 12 → 30 V dc M8 Connector IP67 Plastic Yes Yes
RS Stock No. 187-1799
Mfr. Part No.U500.PA0.2-GP2J.72F
BrandBaumer
HK$2,727.82
Each
units
70 → 1000 mm Push Pull Block M12 x 1 200 (Sonic)kHz - - 30V 12 → 30 V dc M12 Connector IP67 Plastic Yes Yes
RS Stock No. 187-1800
Mfr. Part No.UR18.DA0.2-IAMJ.7BF
BrandBaumer
HK$3,186.48
Each
units
70 → 1000 mm Analogue, Push Pull Barrel M12 x 1, M18 x 1 200 (Sonic)kHz 18 mm - 30V 12 → 30 V dc M12 Connector IP67 Stainless Steel Yes Yes
RS Stock No. 187-1801
Mfr. Part No.UR18.DA0.2-UAMJ.7BF
BrandBaumer
HK$3,186.48
Each
units
70 → 1000 mm Analogue, Push Pull Barrel M12 x 1, M18 x 1 200 (Sonic)kHz 18 mm - 30V 12 → 30 V dc M12 Connector IP67 Stainless Steel Yes Yes
RS Stock No. 214-717
Mfr. Part No.UNDK 20P 6903 S35A
BrandBaumer
HK$3,450.77
Each
units
100 → 1000 mm PNP-NO Block - 240kHz - - 30V 12 → 30 V dc M8 Connector IP67 PET Yes Yes
RS Stock No. 187-1802
Mfr. Part No.UR18.PA0.2-GP2J.7BF
BrandBaumer
HK$2,727.82
Each
units
70 → 1000 mm Push Pull Barrel M12 x 1, M18 x 1 200 (Sonic)kHz 18 mm - 30V 12 → 30 V dc M12 Connector IP67 Stainless Steel Yes Yes
RS Stock No. 815-4196
Mfr. Part No.U500.DA0-11110575
BrandBaumer
HK$2,067.91
Each
units
100 → 1000 mm Analogue Block - 220kHz - - 30V 12 → 30 V dc M12 Connector IP67 ASA, PMMA Yes Yes
RS Stock No. 303-5150
Mfr. Part No.UNAM 18P1703
BrandBaumer
HK$3,005.26
Each
units
100 → 700 mm PNP-NO Barrel M18 x 1 240kHz 18 mm - 30V 12 → 30 V dc M12 Connector IP67 Nickel Plated Brass Yes Yes
RS Stock No. 338-9946
Mfr. Part No.UZDK 30P6103/S14
BrandBaumer
HK$3,853.40
Each
units
100 → 1000 mm PNP-2NO Block - 240kHz - - 30V 12 → 30 V dc M12 Connector IP67 Die Cast Zinc Yes Yes
RS Stock No. 338-9924
Mfr. Part No.UNAM 30I6103/S14
BrandBaumer
HK$4,262.29
Each
units
100 → 1000 mm Analogue Barrel M30 x 1.5 240kHz 30 mm - 30V 15 → 30 V dc M12 Connector IP67 Nickel Plated Brass Yes Yes
RS Stock No. 187-1798
Mfr. Part No.U500.DA0.2-UAMJ.72F
BrandBaumer
HK$3,186.48
Each
units
70 → 1000 mm Analogue, Push Pull Block M12 x 1 200 (Sonic)kHz - - 30V 12 → 30 V dc M12 Connector IP67 Plastic Yes Yes
RS Stock No. 815-4192
Mfr. Part No.U500.PA0-11110577
BrandBaumer
HK$1,751.63
Each
units
100 → 1000 mm Push Pull Block - 220kHz - - 30V 12 → 30 V dc M12 Connector IP67 ASA, PMMA Yes Yes
RS Stock No. 187-1797
Mfr. Part No.U500.DA0.2-IAMJ.72F
BrandBaumer
HK$3,186.48
Each
units
70 → 1000 mm Analogue, Push Pull Block M12 x 1 200 (Sonic)kHz - - 30V 12 → 30 V dc M12 Connector IP67 Plastic Yes Yes