Strictly speaking, the load cell is just a kind of load cell. The load cell can only measure the force perpendicular to the horizontal plane pointing to the center of the earth, so it is generally used in weighing instruments; other force sensors, because the force can be measured in any direction, so its application is more broad.
The working principle of the load cell (load cell) is that the sensor works according to the principle that the resistance of the piezoelectric resistor embedded in the silicon chip increases when it is flexed by any external force. The sensor uses a stainless steel ball to focus the applied force directly on the silicon - sensing element. The change in the resistance value is proportional to the force applied. The change in circuit resistance causes the mV output level to change accordingly.
The load cell (load cell) is mainly used for medical infusion pumps, mobile non-inverted pressure pumps, clogging detection, kidney dialysis machines, load and pressure sensing, variable tension control simulation, robot end sensing Equipment, wire bonding equipment and many other occasions.
Load cell (load cell) classification: generally divided into S type load cell (load cell) and spoke type load cell (load cell)
S -type load cell (load cell) is characterized by: The sensor elastic body adopts shear or bending cantilever structure, one end is fixed, a section of force, low profile height, high structural strength, can be used for various stretching force and pressure Force bearing and measurement. With: dust seal, a wide range of scale, high precision, stable and reliable performance, easy installation and use. Applicable to electronic weighing, weighing and other measuring and weighing industrial automation measurement and control systems.
The spoke-type force measuring sensor (weighing sensor) is characterized in that its elastomer adopts a short and high shear beam, which has excellent rigidity, strong lateral resistance, and overload self-locking on the structure. The use of plastic seals and welded seals on the protective surfaces has achieved IP67 and IP68 , respectively , and is therefore widely used in truck scales, typhoon scales, dynamometers and crane scales.
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