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Single Point Load Cell 300g/1kg/20kg/100kg/300kg for Weighing Scale

Single point load cell is the most common load cell for weighing scale in the market.Single point load cell In the early 1980s, in order to cope with the contradiction of requirements (small range, large stiffness and high accuracy) of the electronic price computing scale for commercial use, elastic elements adopt the multibeam structure with a low appearance and a small percentage of materials. The Eρ product is small, the yield rate is high, the specific strength is large, the plasticity is good, and the low-temperature performance is good. Meanwhile, there is 2A12 aluminum alloy with a low elasticity modulus with a favorable mechanical processing performance. The single point load cell with varied structural types, including aluminum alloy parallel beam, central beam, and central ring, have been subsequently developed. Its mechanical characteristic is to generate the bending stress (or normal stress) generated by combination between the upper stress beam and the flexible beam of elastic elements. Though the bending stress is used, multiple parallel beams have their mechanical characteristics. Therefore, loading point changes of elastic elements show poor sensitivity towards output. In other words, the structure of bending stress has the structural characteristics of the shear stress. Therefore, single point load cell has found wide applications in the electronic price computing scale and the electronic portable platform and bench scale. Similar to the shear elastic elements of load cell, a new development trend has been formed for the normal stress parallel beam elastic elements. Various elastic elements with a parallel beam are presented in figure 1.
Different types of elastic elements of beam load cells
Parallel beam elastic elements are an integrated structure made up of two parallel beams and two vertical beams. The parallel beam is formed through processing of the single hole, double holes, double-connected holes, five-connected holes, and rectangular holes.
Since the strain area of the parallel-beam elastic elements is a cross-sectional strain bridge formed by precise processing of the single hole, double holes, two-connected holes and five-connected holes, it is necessary to get rid of the traditional concept of pasting the resistance gauge on an uniform stress field and to past the resistance strain gauge to the stress concentration area.
Single point load cells have specification as follows:
Model
ATO-S-LCB-DYX-306
Capacity
300g, 600g, 1kg, 2kg, 3kg, 6kg, 10kg, 20kg, 40kg, 100kg, 200kg, 300kg, 500kg
Accuracy
0.02~0.03%F.S (linearity + hysteresis + repeatability)
Sensitivity
2.0±0.05mV/V
Creep
±0.02~±0.03%F.S/30min
Zero output
±1%F.S
Temperature effect on zero
±0.03%F.S/10℃
Temperature effect on output
±0.03%F.S/10℃
Operating temperature
-20℃~+65℃
Input impedance
350±20Ω
Output impedance
350±5Ω
Insulation resistance
≥5000MΩ
Safety overload
150%F.S
Bridge voltage
DC 10-15V
Material
Aluminum alloy
Protection class
IP67
Load cell has various capacities from 300g to 500kg to apply for different types of weighing scale or pricing scale. Figure 2 is the single point load cell dimensional drawing in different capacity.
Single point load cell dimensional drawing
Single point load cell installation diagram is shown on figure 3.
Single point load cell installation diagram

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