Cable requirements customers must derive the distance from power supply to device based on cable specifications expected maximum ambient. C is the concentration of the gas l is the path length of the beam through the gas.
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Open path gas detector wiring diagram. Tm794200 rev ad march 2019 8200 market blvd chanhassen mn 55317 usa phone. 1 973 239 8398 fax. The detector operates on the principle of infrared ir absorption. Power must remain disconnected until all other wiring connections are made. Avoid process areas that release vented gas or steam. Appendix a wiring configurations provides wiring diagrams for installation.
Appendix b accessories provides a list of accessories available for the quasar 900 open path gas detection system. Searchline excel open path gas detector opgd consists of a transmitter unit that sends an infrared beam to a receiver unit up to 200 metres away and can be located where a flammable hydrocarbon gas cloud is likely to occur. Wpower wiring requirements power requirements the ir5500 open path gas detector is powered by 24 vdc 10 operating. Appendix c sil 2 features details the special conditions for compliance with the requirements of en 61508 for sil 2. Open path gas detection system user guide document ref. Arise with the detector.
Since the model ir5500 infrared open path system is designed to continuously monitor for leaks of combustible gas a power switch is not included to prevent accidental system shutdown. Gases absorb light at specific wavelengths. 1 973 239 7614 website. A highly sensitive range for detection of low level leaks or lel meters a hazardous gas level. Primary dc voltage power must be provided by the customer. 014 mm2 to 25 mm2 wire.
The gas concentration output for open path detectors is expressed in ppm meters parts per million of combustible gas times the path length in meters.
Gallery of Open Path Gas Detector Wiring Diagram
