The all fiber optic multipoint methane monitoring system, MSP-M100x, is developed for remotely monitoring the concentration of Methane gas at multiple locations in the coal mines. Since the sensor head is made without any active electrical components, it is intrinsically safe when used in the hazard environment such as coal mines. The optical spectral detection technology implemented eliminates the requirement of frequently calibrations that are needed when a conventional Methane detection is deployed. With the use of optical fiber link between monitor and sensor header, the system can provide a remote and online monitor/measurement information, which makes this sensor system particular suitable for the safety monitoring in the coal mine.

The monitor unit can connect up to 3 fibre optic methane sensors. The measurement range of each sensor can be selected according to the customer’s demand. Four standard measurement ranges are available according to the concentration of the methane level in volumes: 0-1%; 0-10%; 0-40%; and 0-100%. For each measurement range the measured accuracy and response time will be slight different.