ALF320 Moment Rejecting Force Sensor
Heavy duty variant on the ocular bending beam loadcellbin
Key features
- Moment rejection cantilever bracket type
- Full load range: 5 - 50kN
- Tension, compression and bi-directional
- Rated output rationalised: 1mV/V
- Non-lin./hysteresis: 0.05/0.05% RL
- High structural stiffness
About the ALF320 Moment Rejecting Force Sensor
The ALF320 is a heavy duty variant on the binocular bending beam loadcell. It is intended for pure force measurement, but targeted at applications involving large moments/moment arms. The loadcell is designed to be bolted to a large, flat surface and used as a bracket to support a cantilever beam. A cantilever bracket loadcell can be used at both ends to fully support the beam, provided thermal expansion is allowed for somewhere in the system. The ALF320 can also be mounted against a floor or ceiling plate to act as a strut support in much the same way. The ALF320 is able to support large sideloads without effecting measurements.
The binocular bending beam construction has good moment immunity resulting in very small errors for changes in the force application point. This point may vary not only in terms of distance along the cantilever beam, but also in a manner that would apply a small torque around the axis of the beam. Although the loadcell is compensated for induced errors, there is a maximum supported moment for each range. Standard FLF320 loadcells can withstand full rated load at half a metre full cantilever. It is important to contact our engineering department to discuss loadcell selection to suit any load application or range.
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Talk to an expertTechnical Specifications
| Specification | Value |
|---|---|
| ±0.2%ao | 10^8 ±RL cycles |
| Alf320 moment rejecting force sensor | 5kN, 10kN, 50kN |
| Bridge resistance | 700 Ω |
| Creep - 20 minutes | ±0.05% AL |
| Excitation voltage - maximum | 20V |
| Excitation voltage - recommended | 10V |
| Hysteresis | ±0.05% RL |
| Insulation resistance - minimum at 50vdc | 500 MΩ |
| Load direction | Tension, compression, bi-directional |
| Non-linearity - terminal | ±0.05% RL |
| Output symmetry | ±0.2%AO |
| Overload (applied 500mm from loadcell face) – safe | 25% RL |
| Overload (applied 500mm from loadcell face) – ultimate | 50% RL |
| Overload (applied at loadcell face) – safe | 100% RL |
| Overload (applied at loadcell face) – ultimate | 200% RL |
| Rated output – nominal | 1.2mV/V |
| Rated output - rationalised | 1.0mV/V |
| Rationalisation tolerance (applies to single direction calibrations) | ±0.1% RL |
| Repeatability | ±0.02% RL |
| Sealing | IP65 |
| Temperature effect on rated output per °c | ±0.005% AL |
| Temperature effect on zero load output per °c | ±0.01% RL |
| Temperature range - compensated | -10 to +50°C |
| Temperature range - safe | -10 to +80°C |
| Ultimate sideload capacity | 100 % RL |
| Weight - nominal (excluding cable) | 8.5kg |
| Zero load output | ±4% RL |
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ALF300 Sideload Rejection Force Sensor
- Measuring range: ~1 kN to ~400 kN
- Formulaic error quantification
- Misalignment error compensation