Volatile Organic Compounds · VOC

The Nuvair series of Pro VOC Alarm analyzers detect the presence of Volatile Organic Compounds (VOC) in compressed gases or ambient air. Residual oil (and many other organic compounds) can be measured as VOC in compressed gases.

According to the EPA, Volatile Organic Compounds (VOC) are emitted as gases from certain solids or liquids. VOCs include a variety of chemicals, some of which may have short- and long-term adverse health effects. Concentrations of many VOCs are consistently higher indoors (up to ten times higher) than outdoors. VOCs are emitted by a wide array of products numbering in the thousands. Organic chemicals are widely used as ingredients in household products. Paints, varnishes and wax all contain organic solvents, as do many cleaning, disinfecting, cosmetic, degreasing and hobby products. Fuels are made up of organic chemicals. All of these products can release organic compounds while you are using them, and, to some degree, when they are stored.

For a complete definition of VOC, see 40 CFR Part 51.100(s). OSHA standards on PPE (respiratory protection) hydrocarbon (condensed) allowable content is established in 29 CFR 191.134(i)(1)(ii)(B) at "... 5 milligrams per cubic meter of air or less." There are many breathing standards (based on intended application) for compressed air and allowable hydrocarbon content.

WARNING: Never expose gas sensors to pressure or you may cause damage and/or false readings. Damaged sensors will not provide accurate gas analysis. Most gas analyzers can be used to analyze a regulated gas sample flow, the contents of a gas cylinder, or the flow from a regulator. The flow rate of gas must equal 1-5 L/min. To produce this flow, a Flow Restrictor and Regulator may be required. A faulty Flow Restrictor can lead to a false analyzer reading. Flow Restrictors should be regularly tested with a Flow Meter. Inaccurate gas analysis can lead to serious personal injury or death.

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