Lead-acid accumulator electrolyte is a kind of corrosive liquid

whose density is an important parameter to reflect accumulator remaining capacity.In order to solve the problem of fast

accurate and on-line measurement for density of corrosive liquid.Low-energy γ radial transmission absorption principle and radioactive isotope measurement are used to design accumulator density detector based on γ radial.Explain the working principle and design method of accumulator density detector.The test result shows that this RMS error of accumulator electrolyte density detector is ± 0.205 %

which meets the demand in application.