Hay probe
A hay probe is a thermometer for measuring inside loose piles of hay , straw, or grain . It consists of a lance with one or more heat sensors and a display device.
use
With the lance all places of the opaque pile can be examined for heat accumulations and fires. It is used by the fire brigade and in agriculture . Just a few weeks after the harvest, fermentation can lead to high temperatures and haystack spontaneous combustion within the haystack. The main danger times are between the 4th and 120th day after storage. Constant inspection of the hay store is necessary to detect signs of dangerous self-heating.
If these measurements reveal a storage temperature of more than 30 ° C, further control measurements must be carried out at intervals of no more than five hours. If the temperature rises to more than 70 ° C, there is an acute risk of fire. The person responsible must immediately initiate countermeasures in the presence of the fire brigade ready to extinguish.
history
The Swiss Gotthold Laupper (1873–1944) was the inventor of the “Laupper probe”, which was successfully used against the notorious haystack spontaneous combustion.
literature
- Elfriede Karlsch, Walter Jonas, Dieter Karlsch: Die Rote Hefte, Issue 47 - Fire protection in agriculture . Kohlhammer, Stuttgart 1993, ISBN 978-3-17-012104-1 , pp. 32-36 .
Individual evidence
- ↑ Laupper probe. Retrieved August 11, 2020 .