Series 3520 Percent Oxygen AnalyzerOur ALPHA OMEGA INSTRUMENTS Series 3520 Portable Trace Oxygen Analyzer is battery operated and designed for industrial and commercial applications where accurate and reliable spot trace oxygen measurements are needed. The Series 3520 Portable Trace Oxygen Analyzer features long life ambient temperature electrochemical sensor. The enclosure is made from durable polycarbonate and is rated NEMA 1 for general purpose service. The instrument is powered
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