Specific weight measurer

Abstract

A specific gravity measuring device can certainly and instantly measure specific gravity of various solid state substances through one measurement operation quite simply. The specific gravity measuring device includes a liquid bath, a first measuring portion supporting the liquid bath, a measuring object receptacle member arranged in the liquid bath in a condition dipped in the liquid, a second measuring portion supporting the measuring object receptacle member in non-contact condition relative to the liquid bath, an arithmetic unit deriving a specific gravity value on the basis of measured values of the first and second measuring portions and a display unit for displaying the specific gravity value derived by the arithmetic unit. The first measuring portion measuring increase of weight associating with dipping of the measuring object in the liquid by the first measuring portion, as buoyancy, and the second measuring portion measures a weight of the measuring object in the liquid by the second measuring portion. The arithmetic unit derives the specific gravity value from a measured value of the buoyancy and the weight in liquid for displaying on the display unit.

Description

technical field [0001] The present invention relates to a specific gravity measuring device which can be used for measuring various substances. In addition to solid substances such as precious metal alloys, synthetic resins, ceramics, rubber, fibers, etc., its measurement range also includes powdery substances, granular substances and liquid substances. Background technique [0002] In general, in order to know the specific gravity of a solid substance with an unknown volume, first use the Archimedes principle to find the volume of the solid substance, that is, use the buoyancy of the substance in the liquid to be equal to the weight of the liquid displaced by the solid substance principle. The next step is to measure the weight of the solid matter in air and to measure its weight in the liquid while completely submerged in a liquid of known specific gravity (usually water has a specific gravity of 1) to derive the buoyancy as the difference between the weight in air and th...

AI Technical Summary

Problems solved by technology

But all traditional specific gravity measuring devices need to carry out two-level measurement: first measure the weight of the measured object in the air, and then immerse the measured object in water (in the liquid) to measure its weight or buoyancy, so it takes a lot of effort to compare Multiple working hours and long measurement times

Especially, when it is necessary to measure the specific gravity of different objects in turn, the efficiency of the traditional measuring device is too low

Images