Design of weight volume automatic measuring device based on hydrostatic comparison method

Abstract

Currently, density determination method which is based on the density verification of the liquid is the most popular method for volume of weights measurement. A novel set of apparatus combined with automatic measuring devices and weighing instruments for weight the volume measurement is proposed in this paper. The mechanical structure of the device is optimized. For example, the rod structure of the suspension mechanism avoids the eccentric load error caused by the eccentricity of the lower hook and improves the measurement accuracy. The bubble removal device is added to reduce the error caused by the bubble adhering to the surface of the weight when the weight is immersed in the liquid. After weighing, turn on the drying function to quickly remove the residual liquid on the weight surface.

Keywords

• Weight standard
• Hydrostatic comparison
• Volume
• Mass calibration