Generic BX350-3AA High Precision Resistance Strain Gauge / Full Bridge - Pressure & Weight Sensor

The BX350-3AA is a full-bridge foil strain gauge with a nominal resistance of 350 Ohms. The full-bridge configuration provides inherent temperature compensation and a higher output signal compared to quarter- or half-bridge setups, making it ideal for precision measurement applications without requiring external completion resistors.

A '0.02 level' designation indicates the gauge is manufactured to a high precision standard, where the output deviation between individual units is controlled within 0.02%. This ensures exceptional consistency and accuracy, making it suitable for building high-grade pressure sensors and load cells where minimal error is critical.

As a full-bridge gauge, it has four active strain-sensitive elements arranged in a Wheatstone bridge. You must connect an excitation voltage (typically 5V or 10V DC) across the bridge's input terminals and measure the differential millivolt output signal across the output terminals. This signal must be amplified by an instrumentation amplifier before being read by a data acquisition system or microcontroller.

The BX350-3AA has a specified strain limit of 2%. This means it can accurately measure deformations up to 20,000 microstrain (με) before risking permanent damage or nonlinear behavior. Exceeding this limit may compromise the gauge's calibration and long-term stability.