I need some details of a digital weight Indicator.
mail from CA
Digital Weight Indicators and Weighing Scales use Strain Gauges mounted on a Stressed Beam, Cantilever or Plate which is also Elastic, means springs back to old shape.
Strain Gauges are bonded to these plates and connected in a Wheatstone bridge circuit. The output of these are very low, as less as 5mV. These are amplified close to the sensor and usable outputs in volts, like 0-10V are used to display the parameter or control the systems.
Fluids Weights are measured with pressure sensors also. Which also have a mini strain gauge or piezoelectric sensor to convert weight to millivolts.