ALF318 Pancake Force Sensor
Has good output symmetry between compression and tension operation
Nyckelfunktioner
- Full load range: 1kN, 2kN, 5kN, 10kN, 20kN, 50kN, 100kN ,200kN, 500kN
- Tension / compression / bi-directional
- Non-lin./hysteresis: 0.1/0.1% RL
About the ALF318 Pancake Force Sensor
The loadcell has good output symmetry between compression and tension operation.
All standard bi-directional loadcells are calibrated in both modes. Ranges up to 20kN have counter bored and tapped outer fixing holes enabling versatile fixing options without loss of the low height advantage.
The ALF318 pancake loadcell has a recessed boss. If you require a raised boss the ALF254 may be more suitable. The ALF254 has standard ranges from 25 to 200kN.
We are happy to design variants of this loadcell to meet your specific requirements. Versions can be manufactured for fully compensated operation up to +250°C. Please consult our engineering department.
Geometry: Shear web structure with high axial and lateral mechanical stiffness.
All standard ranges are manufactured in stainless steel.
Notes
1. AL = Applied load. 3. AO = Average of tension and compression outputs for full load.
2. RL = Rated load. 4. Temperature coefficients apply over the compensated range.
Connections
The loadcell is fitted with 2 metres of PVC insulated 4 core screened cable type 7-2-4C for ranges up to 20kN. Ranges above 20kN are fitted with 16-2-4C cable. A 4 pin Binder chassis plug option is available instead of the cable. For the ranges up to 20kN the plugs are 712 series, for 50kN and above 723 series are used.
Excitation + = Red or pin 1 Signal + = Yellow or pin 3 Screen = Orange
Excitation - = Blue or pin 2 Signal - = Green or pin 4
Reverse the signal connections to obtain a positive signal in tension mode. The screen is not connected to the loadcell body.
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Prata med en expertTekniska specifikationer
| Specifikation | Värde |
|---|---|
| Bridge resistance | 700 Ω |
| Creep - 20 minutes | ±0.05% AL |
| Excitation voltage - maximum | 20V |
| Excitation voltage - recommended | 10V |
| Fatigue life (ranges 10kn and above) | 10^8 RL cycles |
| Hysteresis | ±0.1% RL |
| Insulation resistance - minimum at 50vdc | 500 MΩ |
| Load direction | Tension, compression, bi-directional |
| Measurement range | 1kN, 2kN, 5kN, 10kN, 20kN, 50kN, 100kN ,200kN, 500kN |
| Non-linearity - terminal | ±0.1% RL |
| Output symmetry | ±0.5% AO |
| Overload - safe | 50% RL |
| Overload - ultimate | 200% RL |
| Rated output - nominal | 2.1mV/V |
| Rated output - rationalised | 2mV/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 | ±0.005% RL |
| Temperature range - compensated | -10 to +50°C |
| Temperature range - safe | -10 to +80°C |
| Zero load output | ±4% RL |
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