This standard specifies the universal requirements for calibration of optical sand content measuring instruments, calibration methods, data analysis and evaluation, calibration conclusions, etc. This standard is applicable to the calibration of optical sand content measuring instruments to establish the correlation between the instrument output data and the sand content of water bodies.
T/CHES 34-2020 history
2020T/CHES 34-2020 Calibration specification for optical sand concentration measuring instrument