Title :
A miner´s personal carbon monoxide alarm
Author :
Chilton, Joseph E. ; Carpenter, Clarence R.
Author_Institution :
Bur. of Mines, US Dept. of Interior, Pittsburgh, PA, USA
Abstract :
For the purpose of alerting an underground miner to life-threatening concentrations of carbon monoxide (CO) a miner´s personal CO alarm prototype called PEMCOAL has been developed by the Bureau of Mines. The PEMCOAL unit is small enough to be carried on a miner´s belt, has a flashlamp visual alarm, requires to calibration for use, and uses a disk sensor which changes color by reaction with CO. PEMCOAL was tested at concentrations of CO up to 1000 p.p.m., at temperatures from 5°C to 40°C, and with several potential mine gas interferents. The PEMCOAL alarm times are sufficiently fast to warn miners before they are exposed to hazardous quantities of CO
Keywords :
alarm systems; carbon compounds; chemical variables measurement; gas sensors; 5 to 40 degC; CO miner alarm; PEMCOAL; disk sensor; flashlamp visual alarm; Air cleaners; Belts; Explosions; Filters; Fires; Gas detectors; Gases; Instruments; Prototypes; Temperature sensors;
Journal_Title :
Industry Applications, IEEE Transactions on
