MMF015903

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Strain GaugesStrain gauges are transducers used to measure strain on an object. When an object deforms by either tension, compression, or shear, strain gauges measure the deformation either directly or indirectly and provide a quantitative measurement for the strain. Due to their simplicity and accuracy, strain gauges are popularly used in a range of applications including load cells, force measuring instruments, transducers, industrial weighing systems, and robotics. One of the more popular strain gauge models is the MMF015903 strain gauge which is used for measurements of pressure and strain in applications such as aircraft wing and rocket fuselage leak detection as well as automotive, aerospace, and maritime structural testing.The MMF015903 is a full Wheatstone bridge rosette strain gauge which consists of four active gauge elements symmetrically arranged around a central spacer. It features a full metal construction, a non-self-temperature-compensated design, and uses strain gauges that have insulation resistance of 1000 megaohms. It is suitable for common applications that require a full Wheatstone bridge arrangement and can provide a strain measurement range of +25 με to -25 με for tension and compression.The working principle of the MMF015903 is based on the idea of the Wheatstone bridge. Strain gauges consist of metallic grids which are affixed to the surface of the object being measured. When pressure or tension is applied to the object these grids distort, thus changing their electrical resistance. By connecting four strain gauges in a Wheatstone bridge configuration, the electrical resistance of the grids can be monitored to determine the magnitude of the strain. The electrical connections rely on the bridge being kept in balance, through the use of resistors and variable resistors, so that no or very little current flows through the measuring circuit.The electrical potential difference between two of the resistors is the strain gauge output voltage. The strain gauge output voltage is based on two key factors: the relative change of the resistance due to the strain and the Wheatstone bridge bridge resistance. When using the MMF015903 strain gauge, it is important to consider the temperature coefficient of resistance and gauge factor. The temperature coefficient of resistance indicates how the strain gauge’s resistance is affected by temperature while the gauge factor is the ratio of the measured strain to the measured resistance. Additionally, the measured output voltage is also sensitive to the lead wire resistance, the bridge excitation voltage, and the equivalent strain applied.In summary, the MMF0153903 application field and working principle is an important concept when considering strain gauges. The MMF015903 is a full Wheatstone bridge rosette strain gauge which consists of four active gauge elements. The working principle of the MMF015903 is based on the Wheatstone bridge idea and provides a strain measurement range of +25 με to -25 με. When using the MMF015903 it is important to consider the temperature coefficient of resistance, gauge factor, lead wire resistance, bridge excitation voltage, and the equivalent strain applied.

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