200-ton weighbridge sensor upgrade and transformation

I. Scope of Repair Services and Common Fault Handling

1. Service Content
   • Fault Repair: Including issues such as scale jumping, display not returning to zero, damaged sensors, water ingress in junction boxes, and instrument malfunctions (e.g., displaying [Err03] or [Err02]).
   • Calibration and Verification: Providing nationally recognized formal inspection reports, supporting multiple weighing calibrations (e.g., gross weight, tare weight calculations).
   • Relocation and Installation: Offering on-site services in regions like Jiangsu, Zhejiang, and Shanghai, covering full-scale relocation, foundational debugging, and sensor adjustments.
2. Common Fault Solutions
   • Inaccurate Weighing: Check if the scale body is level, if sensors are evenly stressed, and if the junction box has water ingress or disconnected wires; recalibrate if necessary.
   • Instrument Abnormalities: Restart the instrument, check power supply and batteries, and investigate sensor signal interference or circuit shorts.
   • Scale Shifting or Deformation: Use a forklift to test sensor value discrepancies at each corner, adjust potentiometers, or replace damaged components.

II. Installation Process and Technical Points

1. Installation Steps
   • Foundation Construction: Select pitless, semi-pit, or full-pit structures based on tonnage requirements, ensure foundation load-bearing capacity meets standards, and reserve drainage facilities.
   • Equipment Debugging: Calibrate sensors, adjust limit devices (2-3mm gap), and ensure no friction between the scale platform and foundation.
   • System Configuration: Optional accessories include large screens, printers, anti-cheating systems (e.g., infrared positioning, monitoring devices), and unmanned weighing systems.
2. Foundation Selection Recommendations
   • Pitless: Easy maintenance, suitable for spacious areas, but requires ramp reservation.
   • Semi-Pit: Space-saving but requires attention to drainage and rust prevention, ideal for limited-space scenarios.

III. Cost Reference

1. Repair Costs
   • Minor Faults (e.g., wiring repairs, calibration): Approximately 200-500 RMB.
   • Major Faults (e.g., sensor replacement, scale body adjustments): Costs range from thousands to tens of thousands of RMB, depending on the extent of damage and hoisting expenses.
2. Installation Costs
   • Standard installation for a 150-ton scale starts at around 60,000 RMB, including sensors, instruments, and foundation construction.
   • Additional features (e.g., anti-cheating systems, unmanned modules) incur extra costs; consult suppliers for specifics.