Process and device for the measurement of the flow of raw sap in the stem of a plant such as a tree
US4745805A · kind A · utility
9Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 30, 1986 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | May 30, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0098
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process for the measurement of the flow of raw sap in the stem of a tree or other plant, and a device for the embodiment of the process. According to this process, two holes of small diameter are made in the stem, preferably one above the other, and a heating probe equipped with a thermocouple is introduced into the upper hole at the level of the sap-wood, and a non-heating probe is introduced into the lower hole. Comparison of the temperature allows a flow index K to be obtained which gives the value and which is related to the flow u by a law of type K=A u exp. B, where A and B are constants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.