Hydraulic Equivalent Sediment Analyzer (HESA).
MASSACHUSETTS UNIV AMHERST COASTAL RESEARCH CENTER
Pagination or Media Count:
The HESA is a sensitive relay-recording settling tube that provides a continuous cumulative curve based on the hydraulic equivalence of the sediment particles, a long fall distance, 200 cm, which permits adequate separation of the grains, a large internal diameter of the tube, 20.32 cm, which, in conjunction with a venetian blind gate, allows the use of a representative sample of about 20 grams, a chart ten inches wide which enables detection of minor variations in the cumulative curve, an initial weighing station which provides the use of the full width of the chart for each sample, regardless of its weight, and determination of the exact amount of the fine material remaining in suspension in the tube at the end of each analysis, and a sensitive measurement system based on weight rather than pressure. Author
- Test Facilities, Equipment and Methods