View Larger

The Model IR5000 is composed of an infrared source unit and a microprocessor-based infrared detector receiver module. This Open Path Gas Monitoring System measures only infrared active gases, such as hydrocarbons, and the corresponding output of the system is expressed in equivalent parts-per-million in a path length of one meter (ppm•meter) and equivalent lower-explosive-level in a path length of one meter (LEL•meter), simultaneously. The Model IR5000 utilizes a single beam, single source and single detector design to monitor gas concentrations. This technology provides improved accuracy, reduc- tion of sensor drift and improved immunity to false alarms. The Model IR5000 source projects an infrared beam between 5 and 100 meters through the hazardous area being monitored to the IR5000 receiver. As the IR beam reaches the receiver, it passes through a focusing lens and then alternately passes through two narrow band IR filters. One IR filter is the active wavelength and the second IR filter is the reference wavelength. The IR5000 detector computes the ratio between the active and reference signals to provide an output that is proportional to the gas concentration in the beam path.