Processing Magazine

Compact Flow Switch Monitor Optimized for Process Analyzers

March 23, 2010

The analyzer flow switch is a small, lightweight instrument featuring superior low flow sensitivity, a choice of electronic outputs and a no-moving parts design that ensures maximum reliability. It is ideally-suited for continuous monitoring of analyzer sample flows to provide the highest integrity process analysis without interruption. The switch’s precision flow sensor element has no moving parts to foul, clog or maintain, ensuring continuous reliability and requiring virtually no maintenance. Unlike capillary bypass flow meters and controllers, the unit has no cavities, orifices or dead-legs that can trap fluids and lead to contaminated samples, which preserves sample integrity and provides faster system sampling times. The instrument’s wetted parts are corrosion-resistant 316L stainless steel with Hastelloy-C sensor tips. The FS10A Analyzer Flow Switch is designed for use with nearly all types of process and emissions sampling systems, including gas chromatographs (GCs), mass spectrometers, optical spectrometers, photometers and others. The analyzer flow switch fits in a standard ¼-inch tube tee or SP76 adapter. The switch conforms to NeSSI Generation I and is prepped for Generation II and III compliance. It requires only a single 1.5-x-1.5-inch SP76 base.