This standard specifies the basic principles, description methods, establishment of mathematical models, index distribution and prediction, general reliability requirements, index series division, sampling rules, verification test and assessment methods, result statistics and fault judgment, Requirements for test reports, etc. This standard applies to general rivers, tidal estuaries, lakes, reservoirs, open channels, and hydrological instruments for measuring various hydrological parameters in groundwater.
GB/T 18185-2000 history
2014GB/T 18185-2014 Specification of reliability for hydrologic instruments
2000GB/T 18185-2000 Specification of reliability for hydrologic instruments