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. 258-4926
Mfr. Part No.UC500-30GM-IUR2-V15
TWD16,755.00
Each
units
30 → 500 mm Analogue Barrel M30 x 1.5 380kHz 30 mm - - 30V 10 → 30 V dc M12 - 5 Pin IP65 PBT -
RS Stock No. 166-9497
BrandRS PRO
TWD573.50
Each (In a Box of 540)
units
0 300 mm - Barrel - 40kHz 10 mm - - - 20 V PCB - - -
RS Stock No. 283-599
Mfr. Part No.XX518A1KAM12
TWD10,275.00
Each
units
25 150 mm PNP-2NO Barrel M18 x 1 500kHz 18 mm - - 24V 12 24 V dc M12 - 4 Pin IP67 Plastic Yes
RS Stock No. 237-0799
BrandRS PRO
TWD330.00
Each
units
0.2 → 4 m - Barrel - 40kHz 10 mm - - - 20 V PCB - - -
RS Stock No. 510-3700
Mfr. Part No.UB300-18GM40-E5-V1
TWD9,007.00
Each
units
30 → 300 mm PNP-NO/NC Barrel M18 x 1 390kHz - - - 30V 10 → 30 V dc M12 - 4 Pin IP67 Nickel Plated Brass -
RS Stock No. 510-3716
Mfr. Part No.UB300-18GM40-I-V1
TWD9,018.00
Each
units
30 → 300 mm Analogue Barrel M18 x 1 390kHz - - - 30V 10 → 30 V dc M12 - 4 Pin IP67 Nickel Plated Brass -
RS Stock No. 764-0608
Mfr. Part No.XXV18B1PBL2
TWD3,912.00
Each
units
3 50 mm PNP-NC Barrel M18 x 1 360kHz 18 mm - - 36V 12 24 V dc Cable IP67 Brass Yes
RS Stock No. 700-2864
Mfr. Part No.UM30-215113
BrandSick
TWD20,117.00
Each
units
600 → 6000 mm Analogue Barrel M30 x 1.5 80kHz 65 mm - - 30V 9 → 30 V dc M12 - 5 Pin IP67 Nickel Plated Brass Yes
RS Stock No. 506-2788
Mfr. Part No.3RG6343-3JK00-PF
TWD9,970.00
Each
units
200 → 1000 mm Analogue Block - 200kHz - - - 35V 10 → 35 V dc M12 Connector IP65 PBT -
RS Stock No. 458-5202
Mfr. Part No.UB4000-F42-I-V15
TWD10,446.00
Each
units
200 → 4000 mm Analogue Block - 85kHz - - - 30V 10 → 30 V dc M12 - 5 Pin IP54 ABS -
RS Stock No. 123-2457
Mfr. Part No.UGT508
TWD7,598.00
Each
units
80 → 1200 mm Analogue, PNP-NO Barrel M18 x 1 200kHz - - - 30V 10 → 30 V dc M12 - 4 Pin IP67 Epoxy Glass Ceramic, Polyamide, Stainless Steel Yes
RS Stock No. 123-2441
Mfr. Part No.UGT202
TWD5,940.00
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. 510-3671
Mfr. Part No.UB500-F54-I-V15
TWD10,729.00
Each
units
30 → 500 mm Analogue Block - 380kHz - - - 30V 10 → 30 V dc M12 - 5 Pin IP65 ABS -
RS Stock No. 510-3687
Mfr. Part No.UB2000-F54-E5-V15
TWD9,488.00
Each
units
80 → 2000 mm PNP-NO Block - 175kHz - - - 30V 10 → 30 V dc M12 Connector IP65 ABS -
RS Stock No. 510-3693
Mfr. Part No.UB2000-F54-I-V15
TWD10,729.00
Each
units
80 → 2000 mm Analogue Block - 175kHz - - - 30V 10 → 30 V dc M12 - 5 Pin IP65 ABS -
RS Stock No. 742-0903
Mfr. Part No.XXR12A8KAM8
TWD6,071.00
Each
units
0 200 mm PNP/NPN-2NO Barrel M30 x 1.5 - 12 mm - - 24V 12 24 V dc M12 - 4 Pin IP67 Ultem Yes
RS Stock No. 610-5791
Mfr. Part No.3RG6243-3NN00-PF
TWD5,724.00
Each
units
5 → 150 mm PNP-NO/NC Block - 200kHz - - - 30V 20 → 30 V dc M12 Connector IP65 PBT -
RS Stock No. 850-3046
Mfr. Part No.S18UIAQ
BrandBanner
TWD12,592.00
Each
units
30 → 300 mm Analogue Barrel M18 x 1 - 18 mm - - 30V 10 → 30 V dc M12 - 5 Pin IP67 Thermoplastic Polyester Yes
RS Stock No. 280-6642
Mfr. Part No.UB2000-30GM-E4-V15
TWD9,308.00
Each
units
80 → 2000 mm NPN-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. 814-1134
Mfr. Part No.BUS R06K1-PPX-12/070-S75G
BrandBALLUFF
TWD8,770.00
Each
units
120 → 1000 mm PNP-NO/NC Block - 300kHz - - - 30V 20 → 30 V dc M8 Connector IP67 Messing, PBT Yes