ALF205 Donut Ring Force Sensor
Ideally suited for engineering force measurements (center safety testing of cables, rods and bolts)
Key features
- Full load range: 1MN, 2MN
- Dimensions (mm): OD165 x ID64 x H165
- Non-lin./hysteresis: 0.5/0.5% RL
- Hardened stainless steel body
- Very high structural load limit
About the ALF205 Donut Ring Force Sensor
The ALF205 is ideally suited to engineering force measurements including through center safety testing of cables, rods and bolts. It is designed for easy installation, usually between two flat faces bearing on its loading rings, either unattached or with retaining spigots positioned in the center hole. Alternatively tensile load transfer can be achieved via a tie rod assembly through the center hole. In this way the loadcell can indirectly measure tensile loads in a “fail-safe” mode.
We are happy to design variants of this loadcell to meet your specific requirements. Versions can be manufactured for operation up to +250°C. Please consult our engineering department.
Geometry: Axial strain cylinder in a sealed case, with raised end load bearing faces and hole right through. For use in compression or in fail-safe tensile applications.
Connections
The loadcell is fitted with 2 metres of PVC insulated 4 core screened cable type 16-2-4C or a 4 pin Binder 723 series chassis plug.
- Excitation + = Red or pin 1 Signal + = Yellow or pin 3 Screen = Orange
- Excitation - = Blue or pin 2 Signal - = GreeEn or pin 4
The screen is not connected to the loadcell body.
Do you need this sensor for your next project?
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Not exactly what you’re looking for? We offer standard sensors but can also help you with a tailor-made sensor or a complete measuring solution. Please contact us for advice or budgetary pricing.
Talk to an expertTechnical Specifications
| Specification | Value |
|---|---|
| Bridge resistance | 700 Ω |
| Creep - 20 minutes | ±0.05% AL |
| Excitation voltage - maximum | 20V |
| Excitation voltage - recommended | 10V |
| Hysteresis | ±0.5% RL |
| Insulation resistance - minimum at 50vdc | 500 MΩ |
| Load direction | Compression |
| Measurement range | 1MN, 2MN |
| Non-linearity - terminal | ±0.5% RL |
| Overload - safe | 50% RL |
| Overload - ultimate | 400% RL |
| Rated output - nominal | 1.2 mV/V |
| Rated output - rationalised | 1.0 mV/V |
| Rationalisation tolerance | ±0.5% 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 | ±0.03% RL |
| Temperature range - compensated | -10 to +50°C |
| Temperature range - safe | -10 to +80°C |
| Weight - nominal (excluding cable) | 18 to 19kg |
| Zero load output | ±4% RL |
Related products
Need something else?
ALF210 Donut Ring Force Sensor
- Measuring range: ~7.5 kN to ~50 kN
- Designed for easy installation
- Can indirectly measure tensile loads
ALF313 Low-profile Donut Ring Force Sensor
- Measuring range: ~10 kN to ~200 kN
- Ranges to suit bolt sizes from M6 to M36
- Various designs possible on request