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Evaluation of the Response of Diffusion-Type Carbon Monoxide Sensors.

PB95147971

Publication Date	1994
Personal Author	Edwards, J. C.; Morrow, G. S.
Page Count	24
Abstract	Experiments were conducted by the U.S. Bureau of Mines with six diffusion-type carbon monoxide (CO) sensors to determine their response to a reference CO concentration under both static and dynamic flow conditions. Static experiments were conducted with 0.5 L/min flow of 16 ppm CO in N2 through 8 and 12 liter chambers. Dynamic flow experiments were conducted in two environmental chambers. The results of the static experiments demonstrated that the sensors consistently underestimate the reference gas concentration. The dynamic experiments results showed the sensors provided reasonable agreement with the reference gas concentration when directional flow effects were not considered. Directional flow effects were evaluated for two sensors. The sensors' directional flow effect is significant for their proper in-mine utilization to enhance mine safety through the implementation of a mine fire early warning system.
Keywords	Carbon monoxide Gas detectors Safety devices Mine safety Performance evaluation Warning systems Concentration(Composition) Fire protection Gas flow Diffusion sensors
Source Agency	Bureau of Mines
NTIS Subject Category	41I - Job Environment 94H - Industrial Safety Engineering 48A - Mineral Industries
Corporate Authors	Bureau of Mines, Pittsburgh, PA. Pittsburgh Research Center.
Document Type	Technical Report
Title Note	Rept. of investigations/1994.
NTIS Issue Number	199506

Evaluation of the Response of Diffusion-Type Carbon Monoxide Sensors.

Evaluation of the Response of Diffusion-Type Carbon Monoxide Sensors.
PB95147971

Publication Date	1994
Personal Author	Edwards, J. C.; Morrow, G. S.
Page Count	24
Abstract	Experiments were conducted by the U.S. Bureau of Mines with six diffusion-type carbon monoxide (CO) sensors to determine their response to a reference CO concentration under both static and dynamic flow conditions. Static experiments were conducted with 0.5 L/min flow of 16 ppm CO in N2 through 8 and 12 liter chambers. Dynamic flow experiments were conducted in two environmental chambers. The results of the static experiments demonstrated that the sensors consistently underestimate the reference gas concentration. The dynamic experiments results showed the sensors provided reasonable agreement with the reference gas concentration when directional flow effects were not considered. Directional flow effects were evaluated for two sensors. The sensors' directional flow effect is significant for their proper in-mine utilization to enhance mine safety through the implementation of a mine fire early warning system.
Keywords	Carbon monoxide Gas detectors Safety devices Mine safety Performance evaluation Warning systems Concentration(Composition) Fire protection Gas flow Diffusion sensors
Source Agency	Bureau of Mines
NTIS Subject Category	41I - Job Environment 94H - Industrial Safety Engineering 48A - Mineral Industries
Corporate Authors	Bureau of Mines, Pittsburgh, PA. Pittsburgh Research Center.
Document Type	Technical Report
Title Note	Rept. of investigations/1994.
NTIS Issue Number	199506