MMF017178

Series:	CEA
Part Status:	Active
Pattern Type:	Rectangular Rosette
Strain Range:	±3%
Resistance:	120 Ohms
Resistance Tolerance:	±0.4%
Length - Active:	0.062" (1.57mm)
Length - Overall Pattern:	0.330" (8.38mm)
Length - Overall:	0.50" (12.7mm)
Width - Active:	0.180" (4.57mm)
Width - Overall Pattern:	0.180" (4.57mm)
Width - Overall:	0.62" (15.7mm)
Operating Temperature:	-100 ~ 350°F (-75 ~ 175°C)

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Strain Gauges offer the ability to measure strain, elasticity and other physical conditions in an application field. This article will focus on the MMF017178 strain gauge and its application field and working principle.The MMF017178 strain gauge is designed for the measurement of metal strain in the form of a resistance-type electrical transducer. It is composed of two thin metal foil strips bonded to a flexible backing. When the material to which the gauge is attached is placed under strain, the resistance of the strips will change due to the change in length of the metal strips.The application field of the MMF017178 strain gauge is mainly used in applications where a strain value needs to be measured. This could be in an industrial process, in structural monitoring or for a variety of uses in research and development. The gauge is designed to be able to measure strain in temperatures ranging from -90°C to 130°C. It is also suitable for use in corrosive or highly humid environments.In terms of working principle, the MMF017178 strain gauge utilizes the principle of piezo-resistivity. This is how strain in the gauge element causes a change in electrical resistance proportional to the strain. Piezo-resistivity measures strain by employing the piezoresistive effect, which occurs when a gauged element is deformed or strained, thus producing a change in electrical resistance.First, the pressure used to mount the strain gauge to the surface is applied around the sensor electrodes at critical points of the sample. This allows the initial resistance of the strain gauge to be determined. When the strain gauge is subjected to stress, the resistance of the strain gauge changes. This change in resistance will indicate where the stress is located and its magnitude.To get more accurate readings, the voltage excitation current should be connected to the sensor and adjusted to a nearly zero value. This is done by applying the Wheatstone bridge circuit to connect a differential amplifier to the strain gauge. The Wheatstone bridge provides a null condition, so that when no strain occurs, the amplifier output voltage is zero. The design eliminates the effects of thermal drift from ambient temperatures and helps to produce more accurate readings.By using a differential amplifier, the signal produced can be amplified and the signal-to-noise ratio of the measurement improved. The output signal from the amplifier is then connected to an A/D converter where the data can be collected and stored.In conclusion, the MMF017178 strain gauge is a versatile and reliable instrument used to measure strain in a variety of conditions. It utilizes the piezoresistive effect to provide accurate readings, and the Wheatstone bridge circuit and differential amplifier help produce more reliable results. The application field for this strain gauge includes temperature, humidity, corrosion, and structural monitoring, and research and development. Thus, the MMF017178 strain gauge can be used to measure strain in a wide variety of applications.

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