BF350-3AA Strain Gauge | Precision Resistive Sensor | 50-Piece Bulk Pack

This is a 50-piece lot of the BF350-3AA strain gauge. It's a sensor for measuring how much something deforms. You can bond this foil strain gauge to a surface to detect stress or force. It performs consistently, making it a good choice for creating your own load cell sensor. Features and Benefits - 350 ohm resistance - This is a common impedance. It works well with standard Wheatstone bridge circuits and amplifier modules. - Flexible foil grid - The grid changes shape with the object it's attached to. This changes its resistance, which shows the strain. - Precise design - It gives repeatable measurements. This is important for applications that need reliable data. - Bulk 50-piece pack - You get many gauges for complex projects, classroom experiments, or trying out different sensor designs. Applications - Make your own pressure sensors or a custom load cell for a specific weighing need. - Add instruments to mechanical parts to watch structural stress and fatigue as it happens. - Use in educational projects to show how a BF350-3AA strain gauge works with Arduino and an amplifier. How It Works A strain gauge is a device used to measure strain. This BF350-3AA Strain Gauge is a precision resistive sensor. It operates on the principle that its electrical resistance changes proportionally to the amount of strain applied to it. When the material it is bonded to deforms, the gauge deforms with it. This deformation alters the gauge's electrical resistance. This change in resistance can then be measured to determine the applied strain. This particular product is a 50-piece bulk pack, ideal for multiple applications. Measuring the Output The output from a BF350-3AA Strain Gauge is a change in electrical resistance. This resistive sensing theory is fundamental to its operation. Since the resistance change is often small, special circuitry, such as a Wheatstone bridge, is typically used to accurately measure this variation. The gauge itself has a resistance of 350 Ohm. By monitoring the output voltage of the bridge circuit, which is proportional to the change in resistance, the strain can be calculated. Common Applications Strain gauges, like this BF350-3AA model, are versatile tools for various measurement tasks. They are commonly used in applications requiring the measurement of physical forces. Specific applications for this product include use as a pressure sensor or in a load cell. They are also suitable for integration with Arduino projects, allowing for custom measurement systems. This bulk pack of 50 pieces supports multiple project requirements. How They Work Strain gauges are transducers that convert mechanical deformation into an electrical signal. This BF350-3AA Strain Gauge is a precision resistive sensor. When an object is subjected to an external force, it deforms, or strains. The strain gauge, which is bonded to the object's surface, also deforms. This deformation causes a change in the electrical resistance of the gauge, based on its resistive sensing theory. This change is then measured to quantify the strain. Measuring the Signal To effectively measure the signal from a BF350-3AA Strain Gauge, which is a change in resistance, a sensitive measurement circuit is required. The gauge has a resistance of 350 Ohm. Typically, a Wheatstone bridge configuration is employed to convert the resistance change into a measurable voltage signal. This voltage signal can then be amplified and processed to provide a direct reading of the strain. This method allows for precise determination of the strain experienced by the material.