Use of a test box to measure response times for machine-mounted monitors.
Taylor-CD; Chilton-JE; Zimmer-JA
Mine ventilation: Proceedings of the 10th U.S./North American Mine Ventilation Symposium, Anchorage, Alaska, May 16-19, 2004. Leiden, Netherlands: Balkema, 2004 May; :177-182
A technique for use in underground coal mines measures the response times of machine-mounted methane monitors. This technique uses a calibration cup to deliver gas to the sensor head to measure response times. For comparison, in the current study, response times were measured by placing methane sensor heads in a specially designed test box where they were exposed to an atmosphere containing a constant concentration of methane. Response time readings measured in the test box were shorter than those obtained with the calibration cup. The response times measured in the test box were comparable for sensors from three different manufacturers. The effects of dust cap and flame arrestor design on response times were also evaluated using the test box.
Ventilation; Underground-mining; Coal-mining; Monitors; Methanes
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
Conference/Symposia Proceedings; Book or book chapter
Research Tools and Approaches: Control Technology and Personal Protective Equipment
Mine ventilation: Proceedings of the 10th U.S./North American Mine Ventilation Symposium