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. 237-0799
BrandRS PRO
SGD13.07
Each
units
0.2 → 4 m - Barrel - 40kHz 10 mm - - 20 V PCB - - - -
RS Stock No. 166-9497
BrandRS PRO
SGD13.77
Each (In a Box of 540)
units
0 → 300 mm - Barrel - 40kHz 10 mm - - 20 V PCB - - - -
RS Stock No. 237-0783
BrandRS PRO
SGD13.13
Each
units
0.2 → 4 m - Barrel - 40kHz 10 mm - - 20 V PCB - - - -
RS Stock No. 166-9496
BrandRS PRO
SGD13.77
Each (In a Box of 540)
units
0 → 300 mm - Barrel - 40kHz 10 mm - - 20 V PCB - - - -
RS Stock No. 458-5555
Mfr. Part No.UB2000-F42-I-V15
SGD369.47
Each
units
60 → 2000 mm Analogue Block - 175kHz - - 30V 10 → 30 V dc M12 - 5 Pin IP54 ABS - -
RS Stock No. 612-2229
Mfr. Part No.XX518A3PAM12
SGD269.87
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 Yes
RS Stock No. 700-2858
Mfr. Part No.UM30-213111
BrandSick
SGD467.00
Each
units
200 → 1300 mm PNP-NO/NC Barrel M30 x 1.5 200kHz 30 mm - 30V 9 → 30 V dc M12 - 5 Pin IP67 Nickel Plated Brass Yes Yes
RS Stock No. 700-2889
Mfr. Part No.UM30-213112
BrandSick
SGD703.00
Each
units
200 → 1300 mm PNP-NO/NC Barrel M30 x 1.5 200kHz 30 mm - 30V 9 → 30 V dc M12 - 5 Pin IP67 Nickel Plated Brass Yes Yes
RS Stock No. 458-5101
Mfr. Part No.UB500-18GM75-I-V15
SGD469.00
Each
units
30 → 500 mm Analogue Barrel M18 x 1 380kHz 18 mm - 30V 10 → 30 V dc 5-Pin M12 Connector IP65 Nickel Plated Brass - Yes
RS Stock No. 258-4932
Mfr. Part No.UC2000-30GM-IUR2-V15
SGD664.00
Each
units
80 → 2000 mm Analogue Barrel M30 x 1.5 180kHz 30 mm - 30V 10 → 30 V dc M12 - 5 Pin IP65 PBT - Yes
RS Stock No. 764-0627
Mfr. Part No.XXV18B1NAL5
SGD143.35
Each
units
3 → 50 mm NPN-NO Barrel M18 x 1 360kHz 18 mm - 36V 12 → 24 V dc Cable IP67 Brass Yes Yes
RS Stock No. 612-2128
Mfr. Part No.XX630A3PCM12
SGD833.86
Each
units
300 → 8000 mm PNP-NO/NC Barrel M30 x 1.5 75kHz 30 mm - 24V 12 → 24 V dc M12 - 4 Pin IP67 Plastic Yes Yes
RS Stock No. 458-5533
Mfr. Part No.UB400-12GM-E5-V1
SGD420.00
Each
units
30 → 400 mm PNP-NO Barrel M12 x 1 310kHz 12 mm - 30V 10 → 30 V dc M12 - 4 Pin IP67 Nickel Plated Brass - Yes
RS Stock No. 814-1112
Mfr. Part No.BUS M30M1-XC-60/600-S92K
BrandBALLUFF
SGD602.39
Each
units
600 → 8000 mm Analogue Barrel M30 x 1.5 80kHz - - 30V 9 → 30 V dc M12 - 5 Pin IP67 Brass, PBT, TPU Yes -
RS Stock No. 808-9127
Mfr. Part No.US-N300
BrandPanasonic
SGD554.15
Each
units
0 → 300 mm NPN-NO/NC Block - - - - 24V 12 → 24 V dc Cable IP62 Polycarbonate - -
RS Stock No. 399-5490
Mfr. Part No.UC6000-30GM-E6R2-V15
SGD623.00
Each
units
350 → 6000 mm PNP-2NO/NC Barrel M30 x 1.5 65kHz 73 mm - 30V 10 → 30 V dc M12 - 5 Pin IP65 PBT - Yes
RS Stock No. 610-5741
Mfr. Part No.3RG6112-3BF00-PF
SGD997.00
Each
units
60 → 300 mm Analogue, PNP-NO/NC Barrel M30 x 1.5 400kHz 30 mm - 30V 12 → 30 V dc M12 - 5 Pin IP65 Nickel Plated Brass - -
RS Stock No. 506-2788
Mfr. Part No.3RG6343-3JK00-PF
SGD384.00
Each
units
200 → 1000 mm Analogue Block - 200kHz - - 35V 10 → 35 V dc M12 Connector IP65 PBT - -
RS Stock No. 814-1115
Mfr. Part No.BUS M30M1-PPX-35/340-S92K
BrandBALLUFF
SGD333.60
Each
units
350 → 5000 mm PNP-NO/NC Barrel M30 x 1.5 120kHz - - 30V 9 → 30 V dc M12 - 5 Pin IP67 Brass, PBT, TPU Yes -
RS Stock No. 753-0508
Mfr. Part No.XX512A1KAM8
SGD357.95
Each
units
6 → 50 mm PNP/NPN-2NO Barrel M12 x 1 500kHz 12 mm - 24V 12 → 24 V dc M8 - 4 Pin IP67 Ultem Yes Yes
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