Product Introduction

The Siemens infrared gas analyzer 7MB2335-0NH00-3AA1 is a high-performance gas analysis device, mainly used to continuously detect the concentration value of one or several gases in the mixed gas, so as to facilitate the control and monitoring of the process flow. The following are some key technical and parameter characteristics of the device:

Working principle

The Siemens infrared gas analyzer adopts the non-dispersive infrared (NDIR) method, which is a highly selective measurement technology that can continuously measure the infrared absorption spectrum in one or more infrared absorbing gas components. This method is suitable for measuring infrared absorbing gases such as CO, CO2, NO, etc.

Measurement capability

The analyzer can measure multiple gases at the same time, up to three. It also has the ability to add an electrochemical O2 measurement channel, which expands its application range.

Automation function

The Siemens infrared gas analyzer has an air self-calibration function, which means that in some cases, it does not require calibration gases and accessories, which greatly reduces the need for maintenance. In addition, it has a multi-layer detection function that can ensure high accuracy and small lateral sensitivity.

User interface

The analyzer is equipped with a large-screen LCD display, and all measurement results are clear at a glance. Users can switch the character size through the dedicated function key to facilitate viewing of measurement results. It also supports AC and DC dual use and can work continuously for 6 hours on a single charge, making it very suitable for working on industrial sites.

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Working principle

The working principle of the 7MB2335-0NH00-3AA1 flue gas analyzer mainly includes the electrochemical working principle and the infrared working principle. The electrochemical working principle involves installing a working electrode, a counter electrode and a reference electrode in a cylindrical cell made of plastic, filling the electrolyte between the electrodes, and a diaphragm made of porous tetrafluoroethylene, which is encapsulated on the top. The connection between the preamplifier and the sensor electrode applies a certain potential between the electrodes to put the sensor in a working state. The gas undergoes oxidation or reduction reaction at the working electrode in the electrolyte, and reduction or oxidation reaction at the counter electrode, and the equilibrium potential of the electrode changes, and the change value is proportional to the gas concentration.

The infrared working principle uses the selective absorption characteristics of gas for infrared rays to analyze the gas composition. The infrared sensor is a thin film capacitor type. It has two absorption gas chambers filled with the measured gas. When it absorbs the energy of infrared radiation, the gas temperature rises, resulting in an increase in the pressure in the chamber. If the pressure on both sides of the movable electrode of the capacitor is not equal, its capacitance will change. If the concentration of the measured gas is greater, the difference between the two light beam intensities is also greater, and the change in capacitance is also greater. Therefore, the change in capacitance reflects the concentration of the measured gas in the analyzed gas.

Application fields

This flue gas analyzer is suitable for various industrial gas furnaces or chimneys, environmental protection industry, engine, boiler monitoring, energy monitoring functional departments, metallurgical industry, thermal power industry, building materials silicate industry, petrochemical energy conservation monitoring and other fields. It is used to measure various combustion parameters in flue gas and is an ideal equipment for boiler adjustment, optimization of combustion efficiency, energy saving and emission control.

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