gis TVOC gas detector

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Typical gas analyzer readings; Readings that would indicate a properly functioning engine and converter (at idle) CO2. 14.5 - 16%. o2. 0 - .35%. CO.1 - .45%

LEL sensors measure percent of LEL. For example, Gasoline has an LEL of 1.4%. Therefore, 100% of LEL is 14,000 ppm of gasoline, 10% of LEL is 1,400 ppm of gasoline and 1% of LEL is 140 ppm of gasoline. 140 ppm of gasoline is the lowest amount of vapor that the LEL monitor can "see."

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ANSI/ISA 12.13.01-2013 Explosive Atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases. This part of ANSI/ISA-60079-29 specifies general requirements for construction, testing and performance, and describes the test methods that apply to portable, transportable and fixed apparatus for the detection and measurement of flammable gas or vapour ...

Carbon MonoxideChlorineEthylene OxideFormaldehydeHydrogen ChlorideHydrogen PeroxideHydrogen SulfidePeracetic Acid [aka Peroxyacetic acid]Sulfur DioxideOSHA specifies an 8-hour TWA of 50 ppm. Setting the system alarm at 50 is not recommended, unless the workplace concentration is always teetering just below this level, and compliance with the 50 ppm standard is truly an issue.Although OSHA does not define a STEL or ceiling value for CO, NIOSH does, and it is 200 ppm. Absent the condition of meeting the 50 ppm standard, a more prudent course would be to set alarm-1 (the warning alarm level) at 100 ppm and alarm-2 (the danger alarm level) at 2...See more on gasdetection.com[PDF]STANDARD SPECIFICATION EM-02-04 gas sensor of the detector shall be of modular "plug-in" type without requiring any wiring work to facilitate easy replacement. It shall be of electrochemical type. Its service life in air shall be at least two years. It shall be suitable for exposure to concentrated chlorine gas of 20 ppm for at least two hours. The 90% pick up response time shall not exceed 150 seconds. It shall be suitable for monitoring …