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庫存編號 175-7681
製造零件編號RU50U-S18-AP8X-H1141
BrandTurck
HK$2,203.02
單位
50 → 500 mm PNP-NO Barrel - 300kHz 18 mm - 30V 30 V dc - IP67 Plastic Yes Yes
RS庫存編號 175-7683
製造零件編號RU50U-S18-AN8X-H1141
BrandTurck
HK$2,203.02
單位
50 → 500 mm NPN-NO Barrel - 300kHz 18 mm - 30V 30 V dc - IP67 Plastic Yes Yes
RS庫存編號 175-7687
製造零件編號RU600U-M30E-LI18X2-H1151
BrandTurck
HK$6,970.42
單位
600 → 6000 mm Analogue, PNP-NO Barrel M30 x 1.5 75kHz 44.7 mm - 30V 30 V dc - IP67 Metal Yes Yes
RS庫存編號 175-7685
製造零件編號RU130U-M18E-LI8X2-H1151
BrandTurck
HK$3,006.03
單位
150 → 1300 mm Analogue, PNP-NO Barrel M18 x 1 200kHz 18 mm - 30V 30 V dc - IP67 Metal Yes Yes
RS庫存編號 175-7689
製造零件編號RU130U-M18ES-L18X2-H1151
BrandTurck
HK$4,103.20
單位
150 → 1300 mm Analogue, PNP-NO Barrel M18 x 1 200kHz 18 mm - 30V 30 V dc - IP67 Metal Yes Yes
RS庫存編號 175-7680
製造零件編號RU50U-S18-AP8X
BrandTurck
HK$2,203.02
單位
50 → 500 mm PNP-NO Barrel - 300kHz 18 mm - 30V 30 V dc - IP67 Plastic Yes Yes
RS庫存編號 175-7684
製造零件編號RU40U-M18E-LI8X2-H1151
BrandTurck
HK$4,186.36
單位
25 → 400 mm Analogue, PNP-NO Barrel M18 x 1 300kHz 18 mm - 30V 30 V dc - IP67 Metal Yes Yes
RS庫存編號 175-7688
製造零件編號RU40U-M18ES-L18X2-H1151
BrandTurck
HK$4,103.20
單位
25 → 400 mm PNP Barrel M18 x 1 300kHz 18 mm - 30V 30 V dc - IP67 Metal Yes Yes
RS庫存編號 175-7682
製造零件編號RU50U-S18-AN8X
BrandTurck
HK$2,203.02
單位
50 → 500 mm NPN-NO Barrel - 300kHz 18 mm - 30V 30 V dc - IP67 Plastic Yes Yes
RS庫存編號 175-7686
製造零件編號RU300U-M30E-LI8X2-H1151
BrandTurck
HK$6,254.07
單位
300 → 3000 mm Analogue, PNP-NO Barrel M30 x 1.5 120kHz 30 mm - 30V 30 V dc - IP67 Metal Yes Yes