Strain Gauge | 350 Ohm BF350-6AA | For Load Cell Sensor (10pcs)

This resistive strain gauge measures force, pressure, or twist. It does this by sensing changes in its electrical resistance. It has a resistance of 350 ohms. This foil strain gauge is for making your own sensors. It also works for detailed stress checks on building parts. Features and Benefits - 350-Ohm Resistance - This is a common value. It works well with Wheatstone bridge circuits and typical strain gauge amplifiers. It gives a good signal output. - Constantan Foil on a Resin Base - The bonded gauge changes shape with the surface it's on. This makes a straight change in resistance for correct readings. - Built-in Temperature Compensation - It's made to reduce reading errors from heat expansion. This makes sure measurements show the real mechanical strain. - Attached Band Leads - It comes with wires already attached. This makes putting on a resistive strain gauge much easier. Applications - Custom Sensor Building - This is the main part for making your own load cell, pressure sensor, or torque sensor. - Structural Analysis - Stick it to machine parts, car frames, or building materials. You can do very precise stress analysis and look for wear. - Educational & Lab Use - It's good for experiments in materials science and mechanics. It shows how stress and strain work. How It Works A strain gauge is a sensor that measures strain. It consists of a thin metallic foil pattern, which changes electrical resistance when stretched or compressed. When a material is subjected to an external force, it deforms, and this deformation is called strain. The Strain Gauge | 350 Ohm BF350-6AA | For Load Cell Sensor (10pcs) is designed to be bonded to the surface of the object being measured. As the object strains, the gauge deforms with it, causing its resistance to change proportionally to the strain. This change in resistance can then be measured to quantify the strain. Measuring the Output To measure the output from a strain gauge, a Wheatstone bridge circuit is typically used. This circuit converts the small change in resistance of the 350 Ω strain gauge into a measurable voltage signal. As the strain gauge is subjected to strain, its resistance changes, unbalancing the bridge and producing a voltage output. This voltage is usually very small, often in the millivolt range, and requires amplification before it can be accurately read by data acquisition systems or indicators. The resistance sensor theory underpins this measurement. Common Applications Strain gauges are versatile tools used in various applications where the measurement of force, weight, pressure, or torque is required. The Strain Gauge | 350 Ohm BF350-6AA | For Load Cell Sensor (10pcs) is suitable for load cell sensors, which are widely used in industrial weighing scales, material testing machines, and force transducers. They are also employed in structural health monitoring of buildings and bridges, aerospace components, and in medical devices to measure biomechanical forces. Their ability to precisely measure deformation makes them indispensable for critical engineering assessments. How They Work The fundamental principle behind how strain gauges work is the piezoresistive effect. This effect describes how the electrical resistance of a material changes when mechanical stress is applied. For the Strain Gauge | 350 Ohm BF350-6AA, as the object it is attached to experiences strain, the metallic foil pattern within the gauge is either stretched (increasing its length and decreasing its cross-sectional area) or compressed (decreasing its length and increasing its cross-sectional area). Both actions alter the electrical resistance of the foil, providing a direct, measurable indication of the applied strain. Measuring the Signal Measuring the signal from a strain gauge involves converting the change in resistance into a usable electrical signal. The 350 Ω resistance of the BF350-6AA gauge will vary slightly with strain. A Wheatstone bridge configuration is essential for this. The small voltage output from the bridge circuit, which is proportional to the strain, then needs to be amplified and conditioned. This ensures accurate and reliable readings, especially when dealing with the typically low-level signals produced by these resistance sensors. The conditioned signal can then be fed into a data logger, display, or control system.