This British Standard gives guidance on the selection and use of instruments for the measurement of humidity. It introduces the main concepts and practical techniques involved in measuring humidity in air and other "inert" gases and provides an explanation of how to make valid and meaningful measurements. It also includes guidance on specifying or choosing appropriate equipment for a known application.
BS 1339-3:2004 Referenced Document
BS 1339-1 Humidity — Part 1 : Terms, definitions and formulae Confirmed
BS 1339-2 Humidity - Humidity calculation and tables - User Guide*, 2009-07-31 Update
BS 1339-3:2004 history
0000 BS 1339-3:2004(2011)
2004BS 1339-3:2004 Humidity — Part 3: Guide to the measurement of humidity