Waterproof Ultrasonic Distance Sensor 75 kHz | SR-55 Series
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.
The email opens pre-filled with a short spec checklist — partial details are fine. Typical reply within one business day.
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. |