Sierra Instrument’s Chlorine-Trak 760S Thermal Mass Flow Meter was designed to perform mass flow measurement solution for chlorine injection processes found in typical wastewater treatment applications. Given the corrosive nature of chlorine gas (particularly in the presence of moisture), finding an economical measurement solution has posed a great challenge to the industry. To answer this challenge, the 760S features a flow body manufactured from Kynar polyvinylidene fluoride resin (PVDF). This material offers corrosion- and chemical-resistance at both ambient and elevated temperatures. PVDF is also inherently stable, mechanically tough, and abrasion and flame resistant. The 760S offers an accuracy of +/-5 percent of full scale, flow range up to 300 SCFM chlorine in a four-inch Kynar flow body, and outstanding rangeability of 100-to-1. The instrument’s flow sensors utilize Hastelloy C-127 sensors with six-inch Hastelloy C-127 probe and a one-inch Swagelok Hastelloy NPT compression fitting that mates with the Kynar PVDF flow body. –