What is the sensing range of the SR-55?

The SR-55 (Model UM4000-SR55-AU) features a sensing distance of 280 mm to 4000 mm, with a blind zone of 0-280 mm. It is suitable for medium-range liquid and solid level measurement.

What output does the sensor provide?

This model provides a 0-5V analog voltage output, which is ideal for continuous level monitoring and integration with industrial controllers (PLCs).

Is the sensor suitable for outdoor or harsh environments?

Yes, the sensor has an IP68 protection grade and a rugged PBT or FRP housing, making it waterproof and resistant to dust and chemicals. It operates in temperatures from -25°C to 70°C.

Does it support battery operation?

Yes, the sensor operates on 10-30 VDC with a low current consumption of ≤ 30 mA, making it suitable for battery-powered applications.

Yujie SR-55 Series Ultrasonic Sensor

The Yujie SR-55 series ultrasonic sensors adopt a surface-mount design and support optional AC input. With a maximum measuring distance of 4 m, this series suits industrial automation, silo monitoring and long-distance obstacle detection. Multiple output interfaces make it ideal for medium-range measurement applications.

Features & Applications

Technical Specifications

Each product is organized for procurement review: core performance, fit and mounting, operating limits, integration notes, and RFQ-ready supply terms.

Application Fit

•Liquid and Solid Level Measurement (Tanks, Totes, Processing)
•Bulk Material Management
•Factory automation
•Position Detection
•Collision avoidance systems
•Outdoor equipment positioning

Features

✔75 kHz Waterproof Transducer – Reliable outdoor and harsh environment operation
✔4m Maximum Range – Medium-distance level and obstacle detection
✔Battery Powered Compatible – Low 30mA current consumption
✔Rugged PBT/FRP Housing – Chemical and weather resistant
✔IP68 Protection Grade – Fully waterproof for outdoor use
✔0-5V Analog Output – Direct integration with industrial controllers

Applications

•Liquid and Solid Level Measurement (Tanks, Totes, Processing)
•Bulk Material Management
•Factory automation
•Position Detection
•Collision avoidance systems
•Outdoor equipment positioning

Need Engineering Support for SR-55 Series?

Share sensing range, target type, output requirement, housing constraints, and environmental conditions for an RFQ-ready recommendation.

Request Specifications & Pricing for SR-55 Series

Get detailed datasheets, OEM pricing, and lead time for the SR-55 Series. Sensor evaluation MOQ typically starts from 10 pcs for standard models, depending on interface and housing choice. Available documents generally include outgoing functional QC data, electrical checks, and batch inspection records.

Highlights

•Waterproof Ultrasonic Transducer
•75Khz Waterproof Distance Sensor
•Battery Powered Compatible (Low Current)
•Rugged PBT/FRP Housing

Key Specifications

Performance

Sensing Distance	280 … 4000 mm (200 - 3000 mm)
Adjustment Range	280 … 4000 mm
Unusable Area	0 … 280 mm
Transducer Frequency	About 75 kHz
Response Delay	About 125 ms
Deviation of Characteristic Curve	±1% of full-scale value
Repeat Accuracy	±0.1% of full-scale value
Load Impedance	> 1k Ohm

Mechanical

Housing Material	PBT OR FRP
Transducer Material	Epoxy resin/hollow glass sphere mixture; Polyurethane foam
Weight	150 g

Operating Limits

Operating Voltage	10 … 30 VDC (ripple 10%ss)
No-load Supply Current	≤ 30 mA
Temperature Influence	±1.5% of full-scale value
Ambient Temperature	-25 … 70 ℃
Storage Temperature	-40 … 85 ℃
Protection Grade	IP68

Integration

Product Name	Battery Powered PBT FRP 75Khz Ultrasonic Waterproof Sensor
Model Number	UM4000-SR55-AU
Brand Name	YUJIE
Place of Origin	CHINA
Certification	ISO9001
Standard Target Plate	100 mm × 100 mm
Indicators	LED yellow, LED red
Output Type	1 analogue output 0 - 5 V
Connection	PVC cable, 4-PIN
Wiring Colors	1 BN = BROWN, 2 GN = GREEN, 3 BU = BLUE, 4 BK = BLACK
Standard Conformity	EN 60947-5-2:2007

Procurement

MOQ / Sample Policy	Sensor evaluation MOQ typically starts from 10 pcs for standard models, depending on interface and housing choice.
Sample Lead Time	Standard sample lead time is usually 5-10 working days after output type and environment requirements are confirmed.
Production Lead Time	Typical production lead time is 3-5 weeks depending on quantity, interface changes, and housing customization.
Customization Scope	Common OEM options include output type, cable or connector interface, sensing window, housing material, and sealing level.
Available Documents & Reports	Available documents generally include outgoing functional QC data, electrical checks, and batch inspection records.