On the basis of analysis of principle of density method-based emulsion concentration online detecting technology

a kind of emulsion concentration sensor prototype is developed successfully.Laboratory comparison test results show that its technical specifications

including precision

consistency

linearity

are all one order of magnitude higher than the refractive index based products mostly used in market

as for GESO MS10—5（ G）emulsion

absolute measuring precision is within 0.1 %.Underground industrial test results indicate that the prototype works stably

it satisfies requirement for coalmine underground application and has good promotional value.