Load Cell - is A Kind Of Converter That Converts Conventional Mechanical Force

The Load cell - is a kind of converter that converts conventional mechanical force in certain indications. Despite the fact that there are many varieties of load cells, presently in industrial weighing the most widely spread strain gauges, or just the strain gauges.

Before the load cells appeared in the field of industrial weighing scales, based on the mechanical arm, could weigh almost everything from tablets to the car. Well, if they contain calibrated and in good conditions, the reading of the weights were very accurate.

Mechanical scales can use two methods of weighting: it was either a balancing mechanism, or a mechanism for determining the forces based on mechanical levers. The first of the sensors for weighing the load developed before the strain gauges were hydraulic or pneumatic sensors. In 1843, English physicist Charles Wheatstone invented bridge for measuring the electrical resistance of conductors. Wheatstone bridge was the ideal instrument for measuring the resistance changes, which occur in the load cells.

Despite the fact that the first strain gauge was invented in the 40s of the last century, their production has become economically and technically possible only after the development of electronics is allowed. Still, since the load cells have proven to be integral components of mechanical scales as independent load cells. To date, strain gage load cells dominate the weighty instrumentation. Exceptions were only some laboratories, where it is still used by exact balancing scales.

Despite the general sympathy for load cells, pneumatic and hydraulic sensors are still used in some areas of human activity. For example pneumatic load cells are still used in places where a very important factor of internal health and safety, while saving hydraulic load sensors in remote locations where there is no access to an uninterruptible power supply, since they do not need it.

Load cells can testify to within 0,03-0,25%, they are also compatible with any weighing equipment and can be used in any industry.

Installation

Load sensor should be mounted between two flat, smooth and solid plates. During the load test wall on which are used anchor tightening headroom or piles should also be smooth. When installing sensors on anchor torque centering sleeve holes are often used.

Strain gauges are essential to ensure the safety of production, disabling the process in case of emergency. Extensive use of strain gauges due to their reliability and simplicity. Despite the fact that there is a pressure measuring gauges, and to measure the weight have different scales, sensors popularity stems from the fact that they enable you to provide the measured value in electronic form. This allows you to immediately transfer the measurement value in the form of an electrical signal thanks to load cell that is to automate the process of using the measurement results.

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