HJSD Belt Scale Speed Sensor
The HJSD belt scale speed sensor is specifically designed for electronic belt scales, dosing feeders, and industrial belt conveyor systems. It utilizes a high-precision encoder to monitor the conveyor belt’s operating speed in real time and outputs stable speed pulse signals. The product features a slip-resistant mechanical transmission, an industrial-grade anti-interference design, and a modular structure, which effectively reduces speed measurement errors caused by slipping, pulse loss, or vibration, thereby providing reliable speed data for belt scale flow calculation, cumulative weighing, and automatic control.
Performance Features
1. High-Precision Data Acquisition with Controlled Measurement Error
The system uses a high-precision Omron encoder combined with an optimized mechanical transmission structure to accurately detect even slight changes in belt speed. The linear speed acquisition error is ≤0.05%, providing a solid foundation for the overall weighing accuracy of the belt scale (±0.125% to ±0.3%). This effectively minimizes measurement errors caused by sensor slippage or pulse loss commonly found in conventional speed sensing systems.
2. Intelligent Operation and Strong System Compatibility
The encoder outputs standard digital signals and can be directly connected to PLCs, weighing indicators, and other industrial control systems. It supports multiple signal and communication options, including pulse output and RS485, enabling real-time transmission of belt speed data. The system can support intelligent functions such as closed-loop flow control, abnormal speed alarms, and belt slip monitoring, making it suitable for automated and digital production environments.
3. Excellent Anti-Interference Capability for Harsh Industrial Environments
A fully sealed metal housing and shielded cable design provide excellent resistance to dust, moisture, and electromagnetic interference. The unit can operate reliably in demanding environments with high dust levels, humidity, and strong electromagnetic interference. Its optimized anti-vibration structure also withstands vibration and impact commonly encountered in industrial applications, helping maintain stable signal output.
4. Reliable Structure and Easy Maintenance
The system adopts a pressure-wheel installation structure with synchronous belt transmission, ensuring stable, slip-free contact with the conveyor belt surface. The pressure applied by the measuring wheel is adjustable to accommodate conveyor belts with different thicknesses and tensions. A modular structural design simplifies installation and allows wear parts to be replaced quickly, helping reduce routine maintenance time and operating costs.
Technical Specifications
| Item | Specification |
|---|---|
| Core Component | Omron high-precision incremental encoder |
| Output Signal | Pulse signal; optional RS485 communication output |
| Pulse Resolution | 100–1000 P/R, optional |
| Speed Measurement Range | 0.01–10 m/s |
| Measurement Accuracy | ≤ ±0.05% FS |
| Operating Voltage | DC 12–24 V |
| Operating Temperature | -20°C to +70°C |
| Protection Rating | IP65 |
| Installation Method | Contact roller type, suitable for belt widths of 500–2000 mm |
| Interference Resistance | Industrial-grade EMC compliance; resistant to electromagnetic interference, vibration, and mechanical shock |
| Compatible Equipment | Electronic belt scales, weigh feeders, belt conveyors, and loss-in-weight feeders |
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