Several kinds of instruments or methods used to measure slurry density in wet flue gas desulphurization system

such as the radiactive density meter

the mass flowmeter

the differential pressure density meter

the tuning fork density meter

the floating ball density meter

and the supersonic density meter etc.

have been analysed and comparaed

it is believed that the mass flowmeter is most wide in application

and has better effectiveness

but it has higher price

it's service period is short

and has large lose.If the measured data of differential pressure density meter can be accurately corrected

this kind of density-measuring instrument would have better prospects of application.