How to Measure Sulfuric Acid Concentration ?

How to Measure Sulfuric Acid Concentration ?The on-line continuous measurement of sulphuric acid/oleum is based on the fact that a physical property will change as the concentration changes.  Properties such as conductivity, refractive index and sound velocity are typically used to measure sulphuric acid/oleum concentrations.  
The recommended methods of measurement over the whole range of sulphuric acid and oleum are given below.Electrical conductivity is a property of a fluid that can be used to determine its concentration.  The graph below shows the conductivity (micromhos) at 25ºC for several different fluids, including sulphuric acid from 0 to 100%wt.  The vertical axis ranges from 0 to 900,000 micromhos.For sulphuric acid, the conductivity varies such that for a given conductivity there could be more than one concentration.  This makes conductivity unsuitable for measurement over the full range of acid concentration (i.e. 0 to 100% H2SO4).  However, conductivity can be used where the concentration will vary over a small range and where the range will not cross over one of the peaks or valleys of the conductivity curve.Below shows the correlation between conductivity and concentration for four common solutions

https://www.boquinstrument.com/how-to-measure-sulfuric-acid-concentration

评论

发表评论

此博客中的热门博文

SJG-2083C INDUCTIVE ACID ALKALI CONCENTRATION METER

图片
SJG-2083C   INDUCTIVE ACID ALKALI CONCENTRATION METER SJG-2083C is inductive type acid alkali concentration meter,it's with inductive conductivity sensor,the measuring principle of the infinite sensor is a pair of wirewound alloy toroidal coils. The probe of the sensor is completely isolated from the measured process solution (non-contact). Two coils, one for transmitter and the other for receiver. When the transmitter coil is energized, the electrolyte solution conducts electricity and generates an induced current, which is directly proportional to the conductivity of the solution. The receiver coil detects the magnitude of this current and thus obtains the conductivity value of the solution. Conductivity probe alloy toroidal coil is customized in the toroidal molding with corrosion resistance. Because the probe of the sensor is completely isolated (non-contact) from the process under test (liquid), frequent maintenance and maintenance are not required.
阅读全文

CODG-3000 Industrial Online (chemical oxygen demand ) COD analyzer

图片
CODG-3000 Industrial Online (chemical oxygen demand ) COD analyzer Email:michael@shboqu.com CODG-3000 type COD automatic industrial online analyze(chemical oxygen demand analyzer)is developed with completely independent intellectual property rights of COD automatic testing instrument, be able to automatically detect COD of any water for a long time that in unattended condition. Features of Online COD meter The unique design makes this products compared to similar products with lower failure rate, lower maintenance, lower reagent consumption and higher cost. Injection components: vacuum suction peristaltic pump, and the pump tube between the reagent there is always an air buffer, to avoid corrosion of the tubing, while making reagent mixing more concise and flexible. Sealed Digestion components: high –temperature high-pressure digestion system, accelerating the reaction process, to overcome the volatile corrosive gas exposure system equipment corrosion. Reagent tube: impo
阅读全文

AH-800 Online Water Hardness and Alkali Analyzer

图片
Online W ater H ardness /Alkali   A nalyzer Model:AH-800 Online Water hardness and Alkali analyzer monits water total hardness or carbonate hardness and   total alkali  fully automatically via titration. Description Th is   analyzer  can measure water total hardness or carbonate hardness  and total alkali fully automaticlly via titration. This instrument is suitable for recognising levels of hardness, quality control of water softening facilities and monitoring of water blending facilities. The instrument allows two different limit values to be defined and checks the water quality by determining the absorbtion of the sample during titration of the reagent. The configuration of the many applications is supported by a configuration assistant. Features ◇ Reliable, exact and fully automatic analysing ◇ Simple commissioning with configuration assistant ◇ Self calibrating and self monitoring ◇ High measuring accuracy ◇ Easy maintenance and cleaning. ◇ Minimal reagent
阅读全文