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. 700-2873
Mfr. Part No.UM30-212113
BrandSick
MYR2,150.03
Each
units
60 → 350 mm Analogue Barrel M30 x 1.5 400kHz 30 mm - - 30V 9 → 30 V dc M12 - 5 Pin IP67 Nickel Plated Brass Yes
RS Stock No. 237-0783
BrandRS PRO
MYR43.53
Each
units
0.2 → 4 m - Barrel - 40kHz 10 mm - - - 20 V PCB - - -
RS Stock No. 166-9496
BrandRS PRO
MYR46.16
Each (In a Box of 540)
units
0 300 mm - Barrel - 40kHz 10 mm - - - 20 V PCB - - -
RS Stock No. 123-2469
Mfr. Part No.UGT585
MYR977.00
Each
units
80 → 1200 mm Analogue, PNP-NO/NC Block M18 x 1 200kHz - - - 30V 10 → 30 V dc M12 - 4 Pin IP67 Epoxy Glass Ceramic, PBT, Polyamide, Stainless Steel Yes
RS Stock No. 237-0799
BrandRS PRO
MYR49.47
Each
units
0.2 → 4 m - Barrel - 40kHz 10 mm - - - 20 V PCB - - -
RS Stock No. 166-9497
BrandRS PRO
MYR46.378
Each (In a Box of 540)
units
0 300 mm - Barrel - 40kHz 10 mm - - - 20 V PCB - - -
RS Stock No. 506-2794
Mfr. Part No.3RG6343-3AB00-PF
MYR1,136.01
Each
units
200 → 1000 mm PNP Block - 200kHz - - - 35V 10 → 35 V dc M12 Connector IP65 PBT -
RS Stock No. 446-0232
Mfr. Part No.UNDK 30P1712/S14
BrandBaumer
MYR2,648.11
Each
units
60 → 400 mm PNP-NO Block - 400kHz - - - 30V 12 → 30 V dc M12 Connector IP67 Die Cast Zinc Yes
RS Stock No. 612-2229
Mfr. Part No.XX518A3PAM12
MYR897.65
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. 214-707
Mfr. Part No.UNDK 20U 6912 S35A
BrandBaumer
MYR1,598.80
Each
units
60 → 400 mm Analogue Block - 290kHz - - - 30V 15 → 30 V dc M8 Connector IP67 PET Yes
RS Stock No. 123-2441
Mfr. Part No.UGT202
MYR763.00
Each
units
80 → 1200 mm PNP NO/NC Barrel M18 x 1 200kHz - - - 30V 10 → 30 V dc M12 - 4 Pin IP67 Epoxy Glass Ceramic, PBT, Polyamide Yes
RS Stock No. 123-2455
Mfr. Part No.UGT506
MYR881.00
Each
units
80 → 1200 mm PNP NO/NC Barrel M18 x 1 230kHz - - - 30V 10 → 30 V dc M12 - 4 Pin IP67 Epoxy Glass Ceramic, Polyamide, Stainless Steel Yes
RS Stock No. 742-0824
Mfr. Part No.XX930S1A2M12
MYR2,348.34
Each
units
50 → 1000 mm Analogue Barrel M30 x 1.5 200kHz 30 mm - - 24V 15 → 24 V dc M12 Connector IP65 Metal Yes
RS Stock No. 814-1102
Mfr. Part No.BUS M30M1-PPX-20/130-S92K
BrandBALLUFF
MYR1,230.18
Each
units
200 → 2000 mm PNP-NO/NC Barrel M30 x 1.5 200kHz - - - 30V 9 → 30 V dc M12 Connector, M30 Connector IP67 Brass, PBT, TPU Yes
RS Stock No. 753-0511
Mfr. Part No.XX918A3C2M12
MYR633.54
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. 123-2440
Mfr. Part No.UGT201
MYR763.00
Each
units
60 → 800 mm PNP NO/NC Barrel M18 x 1 230kHz - - - 30V 10 → 30 V dc M12 - 4 Pin IP67 Epoxy Glass Ceramic, PBT, Polyamide Yes
RS Stock No. 848-7155
Mfr. Part No.QS18UNA
BrandBanner
MYR946.05
Each
units
50 → 500 mm NPN-NO Block - - - - - 30V 12 → 30 V dc Cable IP67 ABS Yes
RS Stock No. 399-5103
Mfr. Part No.UB500-18GM75-E5-V15
MYR1,566.19
Each
units
30 → 500 mm PNP-NO Barrel M18 x 1 380kHz 18 mm - - 30V 10 → 30 V dc M12 - 5 Pin IP65 Nickel Plated Brass -
RS Stock No. 280-6658
Mfr. Part No.UB2000-30GM-E5-V15
MYR1,126.70
Each
units
80 → 2000 mm PNP-NO/NC Barrel M30 x 1.5 180kHz 30 mm - - 30V 10 → 30 V dc M12 - 5 Pin IP65 Nickel Plated Brass -
RS Stock No. 612-2156
Mfr. Part No.XX7F1A2PAL01M12
MYR1,356.58
Each
units
6 → 100 mm PNP-NO Block - 500kHz - - - 24V 12 → 24 V dc M12 - 4 Pin with cable IP67 Plastic Yes