Hydrogen peroxide flowmeter

『Hydrogen peroxide flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)

1. What is the UV wavelength for hydrogen peroxide detection? Light with a wavelength of 3200-3800A can also accelerate the decomposition rate of H2O2. Hydrogen peroxide, also known as hydrogen peroxide, is a colorless and transparent liquid that is soluble in water, alcohol, and ether. It is corrosive at high concentrations and gradually decomposes into oxygen and water when stored. 30% hydrogen peroxide has a density of 1.11g/cm3, a melting point of -0.89, and a boiling point of 151.4. Molecular formula H2O2, molecular weight: 34.01. The bleaching and sterilization effects are strong, and the effect is even stronger under alkaline conditions. Hydrogen peroxide stability: Hydrogen peroxide can be catalytically decomposed, and slow decomposition is an exothermic reaction that produces gas at the same time. 2H2O2 (liquid) ->2H2O (liquid)+O2 (gas) 2H2O2 (gas) ->2H2O (gas)+O2 (gas) The factors that affect the decomposition of hydrogen peroxide mainly include temperature, pH value, and catalytic impurities. 1. Temperature: H2O2 is still relatively stable at lower temperatures and higher purity. Pure H2O2 is heated to 153. At temperatures of C or higher, there will be violent explosive decomposition of certain substances. The decomposition process proceeds smoothly at lower temperatures: 2H2O2- → 2H2O+O2 ↑+46.94kcal. 2. PH: The acidity or alkalinity of the medium has a significant impact on the stability of H2O2. Under acidic conditions, H2O2 has stable properties and a slower oxidation rate; In alkaline media, H2O2 is very unstable and decomposes rapidly. The reaction rate of H2O2 as an oxidant is usually faster in alkaline solutions. Therefore, heating alkaline solution can completely destroy excess H2O2. 3. Impurities: Impurities are important factors affecting the decomposition of H2O2. Many metal ions such as Fe2+, Mn2+, Cu2+, Cr3+, etc. can accelerate the decomposition of H2O2. Due to the high content of metal ion impurities in industrial grade H2O2, a large amount of stabilizer must be added to suppress the catalytic effect of impurities. The principle is reduction and complexation. 4. Light: Light with a wavelength of 3200-3800A can also accelerate the decomposition rate of H2O2. To prevent the decomposition of H2O2, it is necessary to take into account heat, light PH、 Propose measures for the four major factors of metal ions.

2. What are the properties of electromagnetic flow meters?

A new type of flow measurement instrument that has rapidly developed with the development of electronic technology.

1、 Measurement is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity;

2、 There are no obstructing flow components or pressure loss inside the measuring tube, and the requirements for straight pipe sections are relatively low. Has unique adaptability to slurry measurement;

3、 Reasonably selecting sensor lining and electrode materials, which have good corrosion resistance and wear resistance;

4、 The converter adopts a novel excitation method, with low power consumption, stable zero point, and high accuracy. The flow range can reach 150:1;

5、 The converter can be integrated or separated from the se

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