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Remote fiber-optic methane monitor.

Authors
Dubaniewicz-TH Jr.; Chilton-JE
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9407, 1992 Jan; :1-8
NIOSHTIC No.
10011221
Abstract
Fiber-optic technology is progressing rapidly, including the development of fiber-optic sensors for many applications. These sensors have the advantages of high sensitivity, light weight, small size, high bandwidth, and freedom from electromagnetic influences. The U.S. Bureau of Mines is investigating the use of fiber-optic technology to monitor mine atmospheres. This report describes a methane monitor based on differential absorption of infrared light. The monitor can detect methane concentrations as low as 0.2 Vol pct as far away as 2 km via fiber-optic cable. The upper range is 100 vol pct methane. Since the system requires no electrical power within the mine, it is intrinsically safe.
Keywords
Monitoring-systems; Monitors; Mining-industry; Explosion-prevention; Accident-prevention; Safety-monitoring
CAS No.
74-82-8
Publication Date
19920101
Document Type
IH; Report of Investigations
Fiscal Year
1992
NTIS Accession No.
PB92-193424
NTIS Price
A03
Identifying No.
RI-9407
NIOSH Division
PRC
Priority Area
Other Occupational Concerns
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9407
State
PA
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