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An Economical Flow Solution for Chlorine Injection Processes

氯气质量流量测量的经济型解决方案

Sierra Instrument’s new Chlorine-Trak® 760S Thermal Mass Flow Meter was specifically designed to perform as an accurate and cost-effective mass flow measurement solution for chlorine injection processes found in typical waste-water treatment applications.

Sierra推出的新型的Chlorine-Trak® 760S是一款精度高、经济型的质量流量计，适用于废水处理中氯气的加注消毒过程。

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, Sierra has designed a flow body manufactured from Kynar® polyvinylidene fluoride resin (PVDF). This material offers excellent corrosion and chemical resistance at both ambient and elevated temperatures. PVDF is also inherently stable, mechanically tough, and abrasion and flame resistant.

在选择一种经济型的测量方案时，氯气的腐蚀性对工业过程形成巨大的挑战。为解决这一问题，Sierra设计出了一款由Kynar® PVDF制成的流量仪表。Kynar® PVDF在外界环境和高温条件下提供非常好的抗腐蚀性和耐化学性。PVDF也是一种稳定性好、机械硬度高、耐磨损和防爆性能高的材料。

 “This is an ideal solution for waste-water treatment,” says Scott Rouse, Sierra Product Line Director. “The Chlorine-Trak’s direct mass flow reading requires no pressure or temperature compensation and provides immunity to corrosion and accuracy for chlorine flow measurement at an economical price.”

Sierra产品经理Scott Rouse说：“这是一种最理想的废水处理解决方案。Chlorine-Trak® 760S直接测量的质量流量读数不需要压力或温度补偿，是用于质量流量测量的一种抗腐蚀经济型的流量计。”

The 760S offers an accuracy of +/-5% of full scale, flow range up to 300 scfm chlorine in a 4” Kynar® flow body, and outstanding range-ability of 100:1. The instrument’s flow sensors utilize Hastelloy® C-127 sensors with 6" Hastelloy® C-127 probe and a 1" Swagelok® Hastelloy® NPT compression fitting that mates with the Kynar® PVDF flow body. Hastelloy C is particularly resistant to pitting and crevice corrosion and is used extensively in the most corrosive environments.

Chlorine-Trak® 760S提供的精度为±5%，当仪表口径为4"时可测得的最大流量为300scfm，可调比为100:1。该仪表的流量传感器是Hastelloy® C-127传感器，具有6"的Hastelloy® C-127探头和一个1"的Swagelok® Hastelloy® NPT压力接头，与Kynar® PVDF表身紧密配合。Hastelloy C具有抗点蚀和缝隙腐蚀的功能，被广泛地应用于强腐蚀环境中。

Sierra’s 760S also offers a digital display with instantaneous and totalized flow, and a digital MODBUS RTU option for easy PLC/DAQ integration and analog 4-20 ma output. Sierra’s Smart Interface software provides users with the ability to fully validate instrument performance and make field adjustments of critical flow meter settings in the field.

Chlorine-Trak® 760S也能提供瞬时流量和总流量的数字显示，数字式MODBUS RTU选项易进行PLC/DAQ集成，模拟输出为4～20mA。Sierra Smart系列的接口软件为用户提供完全的验证仪表功能，现场量程可调节。

        关于 Sierra  Sierra公司创建于1971年1月，是美国一家知名的企业。该公司集热式质量流量计、微管式质量流量计和调节仪及智能型插入式多变量涡街质量流量计等各项产品的研发、生产、服务于一体。公司秉承美国科技之源，集一流专业人才，以先进的技术、严格的管理、卓越的服务，打造专业的品牌。Sierra公司总部在美国，美洲、欧洲及亚洲均设有分公司。