差分pH/ORP传感器

阳离子差分pH/ORP传感器用于传统传感器失效的复杂应用,包括盐水溶液以及电解过程和奶酪生产等多种应用的测量。

这些应用场合中所遇到的问题往往与参比池有关,原因有:

  • 冷端产生高扩散电位
  • 高温(氯化盐水工艺等应用中经常遇到)
  • 接地回路电流大

横河电机的阳离子差分传感器的特点在于具有一个密封玻璃参比电极,并且液接界和任何电解质均不与工艺流体接触。因此,传感器不受扩散电位或污垢的影响,可以确保测量的稳定性且几乎无需维护。有不同版本的差分pH传感器可供选择,只有经常在这些复杂应用中使用传统的参比电极,才能意识到这些传感器相对于传统电极的优势。

FU20-FTS

FU20-FTS是横河电机在pH传感器技术方面的最新研发成果。该传感器将12 mm差分传感器的测量技术与宽体FU20坚固设计结合在一个产品中。

正如市场上常见的产品,横河电机在其产品中使用了银/氯化银参比池。在广泛的应用中已证实,这种溶液非常有效且能够节约成本。

传统传感器的使用寿命在很大程度上取决于对pH设备的定期维护。因此需要经常清洗,以免参比毒化。在高温高压应用中,70-80%的行业用户将从差分传感器技术中充分获益。

特性

  • 无接合点
  • 从工艺流体到传感器内部没有开放连接
  • 不会污染参比元件
  • 未使用隔膜,不存在接合点隔膜堵塞或覆层问题
  • 无电解质流出,不存在损耗问题
 

FU20-FTS

测量原理 阳离子参比
pH范围 2~14
ORP范围 -1500~1500 mV
环境温度 0~105°C(14~221°F)
压力范围

010 bar (0145 PSIG) @ 25°C

05 bar (072 PSIG) @ 105°C

 

概述:

Wet scrubbers are used in utilities, paper mills, and chemical plants to remove sulfur dioxide (SO2) and other pollutants from gas streams. Undesirable pollutants are removed by contacting the gases with an aqueous solution or slurry containing a sorbent. The most common sorbents are lime, Ca(OH)2, and limestone, CaCO3

行业:
概述:

Sodium chlorate is an inorganic compound with the chemical formula NaClO3. It is a white crystalline powder that is readily soluble in water. It is hygroscopic. It decomposes above 300 °C to release oxygen and leave sodium chloride. Several hundred million tons are produced annually, mainly for applications in bleaching paper.

概述:

Continuous technology improvement is ongoing in the pulp & paper industry to obtain the best possible performance. Problems at the wet end (stock preparation) can rarely be corrected downstream. That is why monitoring and controlling pH in pulp stock is critical to the paper making process. Essentially, at every stage in the manufacture of paper, correct pH values play a vital role.

概述:

Current trend for increasing mercury awareness throughout the public sector has caused the government to take action. Recently, the Environmental Protection Agency (EPA) has focused their efforts on controlling mercury levels produced in various coal fired power plants. Based on information from several case studies, the EPA developed the Mercury and Air Toxics Standards to cut back mercury emissions. The most popular technology utilized by coal plants to meet the new standards is a scrubber which cleans the off gas from the combustion process. ORP sensors can further monitor the effluent from these scrubbers to ensure optimal mercury emission levels are achieved. By closely monitoring the mercury concentrations in the effluent, plant managers will be able to easily confirm their plants are meeting the EPA's standards.

行业:
行业:
概述:

The lifetime of a pH sensor has a significant impact on the overall annual costs of a pH measuring loop. Optimizing four key factors will decrease these costs and optimize process control and overall plant efficiency.

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