✦ LIBER ✦
An accurate hydraulic-pneumatic weighing lysimeter for general field use
✍ Scribed by P.D. Berwick; C.J. Sumner
- Publisher
- Elsevier Science
- Year
- 1968
- Weight
- 629 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0002-1571
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✦ Synopsis
For some time there has been a growing need for a simple and inexpensive, yet accurate and reliable field lysimeter. Such an instrument operating on the hydraulic principle has now been developed; its day to day accuracy is 0.25 mm of rainfall or evaporation while over periods of the order of ten days the zero stability is within about 0.50 or 0.60 mm. The system comprises supporting capsules and a pressure sensing device. It requires no power, is not significantly affected by temperature fluctuations and the design has the advantage of being readily adaptable to quite large loads.