| Document ID (ISN) | 37017 |
| CIS number |
82-227 |
| ISSN - Serial title |
0003-4290 - Annales des mines de Belgique - Annalen der Mijnen van België |
| Year |
1981 |
| Convention or series no. |
|
| Author(s) |
Giust A. |
| Title |
CH4 danger level detector - for incorporation in a cap lamp |
| Original title |
Circuit détecteur de seuil de CH4 incorporable à une lampe chapeau [in French] |
| Bibliographic information |
May 1981, No.5, p.433-439. Illus. |
| Abstract |
Description, circuit diagram and explanation of the operation of an instrument that every 4min analyses the atmospheric CH4 content and, by flashing the cap lamp, indicates 4 alarm situations: breakage of the detector filament or the compensator filament; atmopsheric methane concentration exceeding 2% (selected threshold); discharged battery. |
| Descriptors (primary) |
mine gases; methane; explosive atmosphere detection; coal mining; cap lamps |
| Descriptors (secondary) |
description of equipment; automatic alarms |
| Document type |
D - Periodical articles |
| Subject(s) |
Mines and quarries
|
| Broad subject area(s) |
|
| Browse category(ies) |
Mining and quarrying
Lighting and colour
Aliphatic and alicyclic hydrocarbons
|
