Flow Control - Jan 2012
Zero Flow Precision Back Pressure Regulator Equilibars ZF Series backpressure regulator holds precision down to the zero flow range It is a good fit for research applications with intermittent and ultra low gas flows such as oil reservoir core analysis It can also be used for certain corrosive and high temperature applications Standard pressure range is between 50 PSIG and 1500 PSIG Equilibars existing back pressure regulators hold precision across a 10000 to 1 flowrate window ZF was developed for those requiring precision at no flow reactor conditions Features of the ZF1 include 1 8 inch NPT 1 16 inch or 1 8 inch HPLC Valco style connections body material made of SS316 std Hastelloy Viton or Kalrez typical o ring and a Polyimide recommended SS316 diaphragm It has a maximum flow of 1 liter min and a maximum continuous flow of 100 ml min FREE INFO CIRCLE 104 equilibar com Thermal Mass Flowmeter for Chlorine Injection Sierra Instruments 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 corrosionand 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 instruments 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 FREE INFO CIRCLE 105 sierrainstruments com www FlowControlNetwork com January 2012 39
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