Description

Elevator Load Cell DTZZIII-DK100: Usage Guide, Replacement Cycle & Trusted Supply from Nanjing Zhuye

Proper Usage Methods of Elevator Load Cell DTZZIII-DK100

1. Pre-Installation Preparation

2. Installation & Calibration Steps

• Mounting the Load Cell:
  • Locate the designated installation position on the elevator car frame or platform—typically under the car floor, near the support beams. The mounting surface must be flat, rigid, and free from debris to ensure accurate weight transmission.
  • Secure the DTZZIII-DK100 using the provided mounting bolts (torque to 8–10 Nm) to prevent vibration-induced movement. Ensure the load cell is vertically aligned with the car’s weight-bearing points—misalignment can cause measurement inaccuracies.
  • Route the sensor cable from the load cell to the main controller or weight display unit—avoid sharp edges, moving parts (e.g., door mechanisms), and high-voltage cables to prevent damage or signal interference. Use cable clips to secure the cable at 30–50cm intervals.
• Wiring Connection:
  • Follow the wiring diagram provided by Nanjing Zhuye to connect the load cell to the elevator’s main controller:
    • Connect the power wires (positive/negative) to the designated terminals—incorrect polarity can damage the sensor.
    • Attach the signal wires to the controller’s analog input port, ensuring tight connections to prevent signal loss.
    • Use shielded cables for long-distance routing (exceeding 5m) to minimize electromagnetic interference (EMI) from elevator motors or power systems.
• Calibration Process:
  • Power on the elevator and initiate calibration via the main controller or Nanjing Zhuye-approved diagnostic software (by certified technicians only):
    • Zero Calibration: Ensure the elevator car is empty, then trigger the zero-calibration function to set the load cell’s baseline weight.
    • Span Calibration: Place calibrated weights (50%, 75%, and 100% of the rated load capacity) on the car floor, following each weight placement with a calibration confirmation to ensure linear measurement accuracy.
    • Overload Threshold Setting: Program the controller to trigger an alarm or prevent door closure when the load exceeds 110% of the rated capacity (per EN 81 safety standards).
• Functional Testing:
  • Verify calibration by adding/testing different weight loads—confirm the load cell’s output signal and the controller’s weight display match the actual load within ±0.5% tolerance.
  • Simulate overload conditions to ensure the safety interlock activates correctly (e.g., doors remain open, elevator does not start). Document calibration and test results in maintenance records.

3. Routine Usage Maintenance

• Conduct monthly visual inspections: Check for loose mounting bolts, damaged cables, or corrosion on the load cell housing. Clean the sensor and surrounding area with a dry, lint-free cloth to remove dust or debris.
• Test measurement accuracy quarterly: Use calibrated weights to verify the load cell’s readings—recalibrate if deviations exceed ±1% F.S.
• Inspect wiring connections semi-annually for corrosion, wear, or looseness; tighten terminals or replace damaged cables with genuine parts from Nanjing Zhuye.
• Check the load cell’s sealing (IP67) annually to ensure protection against moisture or dust—replace the unit if the housing is cracked or the seal is compromised.

Recommended Replacement Cycle

1. Standard Replacement Cycle

2. Signs That Require Immediate Replacement

• Measurement inaccuracies exceeding ±1% F.S., even after recalibration.
• No output signal or intermittent signal transmission, despite verified power and wiring connections.
• Physical damage: Cracked housing, exposed sensor components, or frayed cables that cannot be repaired.
• Corrosion or moisture intrusion (indicated by rust, water spots, or erratic readings).
• Failure to trigger overload safety interlocks, or false overload alarms that persist after troubleshooting.

3. Maintenance to Extend Service Life

• Maintain the elevator cab at a stable temperature (10–35°C) and low humidity (≤60%) to prevent corrosion of internal components and signal drift.
• Avoid subjecting the load cell to impact or excessive vibration—ensure the car floor is free from loose objects that could damage the sensor during operation.
• Protect the sensor cable from abrasion or pinching by routing it through cable trays or protective sleeves.
• Use only genuine replacement parts and accessories from Nanjing Zhuye for repairs, as counterfeit load cells may have inaccurate strain gauges, poor sealing, or compatibility issues.

Why Choose Nanjing Zhuye Elevator Parts?

• Universal Compatibility: Engineered to work with most elevator brands and control systems, eliminating compatibility risks and simplifying replacement.
• Strict Quality Assurance: Each unit undergoes rigorous testing—including accuracy calibration, temperature resistance, vibration durability, and water/dust protection—to meet global safety and measurement standards.
• Expert Technical Support: Nanjing Zhuye’s certified engineers provide 24/7 assistance, from installation alignment and calibration to troubleshooting measurement errors.
• Global Efficient Delivery: With a robust supply chain and logistics network, Nanjing Zhuye delivers precision sensors promptly worldwide, minimizing elevator downtime during replacement.
• Competitive Pricing: By eliminating middlemen, Nanjing Zhuye offers cost-effective solutions without compromising quality, helping you balance safety compliance, maintenance budgets, and operational efficiency.

Conclusion