Greenhouse gas analyzer

Product Name:Greenhouse gas analyzer

Product model: Gasboard-3000GHG

Gasboard-3000GHG model independently developed by Sifang InstrumentGreenhouse gas analyzerBy adopting the proprietary microfluidic infrared half cell gas sensing technology (international invention PCT/CN2018100767), it is possible to accurately measure the concentration changes of greenhouse gases such as CO2, CH4, N2O, and CO gas in flue gas simultaneously. The range can be as low as 200ppm, and the accuracy can reach up to 1% F.S. It has the characteristics of strong resistance to gas crossing and rod disturbance, and lower drift.

At the same time, for the measurement needs of high concentration CO2 and medium to high range CO, the sensor module of the company's independent intellectual property non dispersive infrared NDIR gas sensor technology can be flexibly configured, which has the characteristics of good stability, small size, and low cost.

Microfluidic Infrared Gas Analysis Technology (NDIR)

The working principle of microfluidic infrared sensing and detection technology is shown in the figure above. Firstly, the infrared light emitted by the infrared light source enters the measurement chamber through a collimator. Molecules composed of different types of atoms such as CO2, CH4, N2O, CO have different absorption characteristics for infrared light. If the above-mentioned gases exist in the measurement chamber, some of the infrared light entering the measurement chamber will be absorbed, and the unabsorbed infrared light will enter the detector. The detector consists of a front chamber, a rear chamber, and a microfluidic sensor, with the front and rear chambers filled with gas of the component to be measured. Under the action of infrared light, the gas in the front and rear chambers of the detector expands; Due to the difference in expansion, a small flow rate may occur between the front and rear chambers; After detecting the flow rate, the microfluidic sensor will generate an AC voltage signal, which is processed to obtain the real-time gas concentration.

To further improve the stability and low range measurement accuracy of microfluidic infrared gas sensors, Sifang Optoelectronics has designed an innovative half cell to achieve reference measurement of the gas to be measured within an infrared light source and microfluidic infrared detector structure. This technology overcomes difficulties such as moisture interference, poor measurement stability caused by using a single chamber, and complex structure of using an independent dual chamber process. In 2019, it was awarded the invention of "A Gas Analyzer and Gas Analysis Method" (Patent No. 201710720122.1).

Product Features

1) One analyzer can simultaneously and continuously measure up to five gases including CO2, CH4, N2O, CO, and O2

2) CO2, CH4, N2O, CO can all choose microfluidic infrared technology, with a range as low as 200ppm and an accuracy of up to 1% F.S

3) Small drift, resistant to moisture interference, and stable for long-term use

4) For the measurement needs of medium and high concentrations, dual beam infrared sensing technology can be used to measure CO2 and CO, and flexible combinations can be made

5) Simultaneously equipped with digital and analog signal output functions, data management is simple and straightforward

Technical Specifications

Application field

Thermal power plants, steel plants, non-ferrous metal smelting plants, aluminum refining plants, cement plants, phosphate fertilizer plants, nitric acid plants, sulfuric acid plants, petrochemical plants, chemical fiber plants, industrial kilns, boilers, civil heating boilers, etc