An on-line underwater scattering turbidimeter is designed for on-line environment inspect system.The turbidimeter bases on the scheme of scattering light measurement focuses on underwater probe of turbidimeter

data acquisition circuit

control section using MSP430 micro controller and PC application program.It has the functions of on-line underwater measurement

turbidity standardization

serial communication and data storage.The resolution is 0.1 NTU and the measurement accuracy is within 2 %.The requirements of turbidity measurement for on-line environment inspect system are achieved.