WEIGHTRAC 31 Chinese Manual Download
WEIGHTRAC 31 is a load cell widely used in industrial continuous weighing scenarios, suitable for belt scales, loss-in-weight scales, and batching systems. To facilitate on-site commissioning and maintenance, we provide the official Chinese manual PDF download.
Click to download: WEIGHTRAC 31 Chinese Manual.pdf
Product Overview and Core Advantages
WEIGHTRAC 31 adopts the strain gauge measurement principle and outputs standard signals, allowing seamless integration with PLCs and weighing instruments. Its compact structure and high protection rating make it suitable for harsh industrial environments such as dust and vibration.
- High precision: Comprehensive accuracy up to ±0.02% FS, meeting trade settlement and process control requirements.
- Strong overload capacity: Safe overload 150% FS, ultimate overload 300% FS.
- Wide temperature range: Operating temperature -30℃~+70℃, temperature compensation range -10℃~+40℃.
- Multiple capacities: Available in specifications such as 1t, 2t, 5t, 10t, 20t.
Technical Parameters Overview Table
| Parameter | Specification |
|---|---|
| Rated capacity | 1t / 2t / 5t / 10t / 20t |
| Output sensitivity | 2.0±0.1% mV/V |
| Comprehensive accuracy | ±0.02% FS |
| Input impedance | 380±10Ω |
| Output impedance | 350±3Ω |
| Recommended excitation voltage | 5~15V DC |
| Protection rating | IP67 (optional IP68) |
| Material | Alloy steel / stainless steel |
Installation and Commissioning Steps
Pre-installation Inspection
- Verify that the sensor model, capacity, and drawings are consistent.
- Check for transportation damage and measure whether input and output impedances are normal.
- Confirm that the mounting surface is flat, clean, free of oil stains and burrs.
Mechanical Installation Key Points
- Ensure the loading direction is consistent with the sensor force axis to avoid lateral forces.
- Use high-strength bolts and tighten evenly in a diagonal sequence to the specified torque.
- After installation, add a protective cover to prevent material impact and dust accumulation.
Electrical Connection and Calibration
- Connect excitation and signal wires according to the wiring diagram in the manual, and ground the shield at one end.
- Power on and warm up for 15 minutes, then record the no-load output.
- Use standard weights or substitutes for two-point calibration to correct zero and span.
- After calibration, recheck linearity and repeatability; the error should be less than 0.03% FS.
Common Faults and Troubleshooting
| Symptom | Possible Cause | Solution |
|---|---|---|
| Output signal drift | Large temperature changes, loose wiring | Check temperature compensation, tighten wiring |
| Unstable zero | Lateral force or installation stress | Readjust installation position and torque |
| No signal output | Cable break, missing excitation | Measure impedance, check power supply |
| Reduced accuracy | Overload history, damaged elastomer | Return to factory for inspection or replace sensor |
Selection and Procurement Recommendations
When purchasing WEIGHTRAC 31, determine the capacity and material based on actual load, installation space, and environmental conditions. It is recommended to reserve 20%~30% overload margin; for corrosive environments, give priority to the stainless steel version.
- Capacity selection: The normal load should be between 30% and 70% of the rated capacity.
- Accuracy grade: Choose ±0.02% FS for trade settlement, ±0.05% FS for process control.
- Certification requirements: For explosion-proof occasions, choose intrinsically safe or flameproof types and verify certificates.
- Accessory matching: It is recommended to also purchase mounting bases, spherical head bolts, and shielded cables.
For complete technical information, please download the WEIGHTRAC 31 Chinese Manual above, or contact the supplier for selection support.