Views: 5 Author: Site Editor Publish Time: 2019-12-12 Origin: Site
| Type | Weight Range | Accuracy (FS) | Apps | Strength | Weakness |
|---|---|---|---|---|---|
| Mechanical force sensors | |||||
| Hydraulic Load Cells | Up to 10,000,000 lb | 0.25% | Tanks, bins and hoppers. Hazardous areas. | Takes high impacts, insensitive to temperature. | Expensive, complex. |
| Pneumatic Load Cells | Wide | High | Food industry, hazardous areas | Intrinsically safe. Contains no fluids. | Slow response. Requires clean, dry air |
| Strain Gage Load Cells | |||||
| Bending Beam Load Cells | 10-5k lbs. | 0.03% | Tanks, platform scales, | Low cost, simple construction | Strain gages are exposed, require protection |
| Shear Beam Load Cells | 10-5k lbs. | 0.03% | Tanks, platform scales, off- center loads | High side load rejection, better sealing and protection | |
| Canister Load Cells | to 500k lbs. | 0.05% | Truck, tank, track, and hopper scales | Handles load movements | No horizontal load protection |
| Ring and Pancake Load Cells | 5- 500k lbs. | Tanks, bins, scales | All stainless steel | No load movement allowed | |
| Button and washer force sensors | 0-50k lbs 0-200 lbs. typ. | 1% | Small scales | Small, inexpensive | Loads must be centered, no load movement permitted |
| Other Load Cells | |||||
| Helical | 0-40k lbs. | 0.2% | Platform, forklift, wheel load, automotive seat weight | Handles off-axis loads, overloads, shocks | |
| Fiber optic | 0.1% | Electrical transmission cables, stud or bolt mounts | Immune to RFI/EMI and high temps, intrinsically safe | ||
| Piezo-resistive | 0.03% | Extremely sensitive, high signal output level | High cost, nonlinear output | ||