Product Information

Transportation Industry Solutions from Sierra Monitor and FieldServer Technologies

Transportation and Alternative Fueled Vehicle solutions from Sierra MonitorLight Rail/Mass Transit

Underground mass transit systems utilize long tunnels where combustible gases and toxic gases can build up either do to seepage from surrounding deposits in the ground of due to man-made circumstances. In such situations it is necessary to continuously monitor for presence of gases to make sure that the levels do not reach hazardous levels to protect the equipment and personnel.

Alternative Fueled Vehicle Facilities

Alternate-Fuel Vehicles are usually in metropolitan fleets and operate on such fuels as compressed natural gas (CNG), liquefied natural gas (LNG), or liquefied petroleum gas (LPG). The bus barns, maintenance facilities and garages for these vehicles require a fire and gas monitoring system to protect personnel and the plant.

Aircraft hangers

Aircraft hangers are used for storage, maintenance and repair of planes, jets and helicopters. The various flammable liquids used in these hangers include aviation fuels, lubricants, solvents, hydraulic fluids and more. Fire and gas detection and monitoring systems are necessary to protect the personnel and equipment in the hanger.


Automotive and rail tunnels not only have to be concerned about the toxic and combustible gases produced by the vehicles but also need to worry about the various cargos that might be passing through the tunnels. Carbon monoxide sensors are necessary to monitor for CO2 resulting from combustion engines. Combustible gas sensors tied into flame detectors are an important safety system in tunnels. Combustible gas can exist as a result of the fuel system on the vehicles (gasoline plus alternative fuels such as CNG, LNG and Propane), or from the cargo on board.

Sierra Monitor's Gas Alarms/Monitors are used in many school systems to monitor for levels of combustible gas and carbon monoxide in school buses, both in the engine compartment and the passenger compartment.

The Sentry Fire and Gas Detection System is widely used in such facilities to monitor for hazardous conditions and provide the necessary information efficiently and in a comprehensive manner so that operators can quickly make decisions to protect the plant and personnel.

The Sierra Monitor Industrial Flame Detector is designed to detect the flames generated by the various combustible gases found in maintenance barns and refueling stations for alternate-fueled vehicles.

The FieldServer Gateway provides the interface necessary for safety devices, process equipment and facility controls so that these various individual systems and devices can communicate to the distributed control systems and building automation systems found in such plants operating on DH+, Profibus, Modbus, ControlNet or EtherNet/IP.