China QGS-08CN Modular Gas Analyzer - Advanced Gas Concentration Measurement by Trusted Suppliers and Factory

The QGS-08CN modular gas analyzer series is a state-of-the-art solution for accurately measuring the volume percentage (concentration) of one or multiple gases within a gas mixture (sample gas). As a product that has successfully entered the government’s first purchase list for new technologies and products in 2016, it showcases high reliability and efficiency. Manufactured by trusted suppliers in China, this gas analyzer is an essential tool for industries requiring precise gas analysis. Our factory prioritizes quality and innovation, ensuring that the QGS-08CN meets the highest standards for performance and safety in gas measurement

Product Details

Measurement Principle

QGS-08CN modular gas analyzer is based on infrared photoacoustic method to realize multi-component detection. A variety of measurement modules can be optional to meet the requirements of measuring multiple gas concentrations. Available modules include infrared photoacoustic module, paramagnetic detection module, electrochemical detection module, thermal conductivity detection module or trace water detection module. Up to two thin-film microsound detection modules and a thermal conductivity or electrochemical (paramagnetic oxygen) module can be assembled simultaneously. According to the range, measurement accuracy, stability and other technical indicators, the analysis module is selected.

Technical Parameters

Measuring Component	CO、CO₂、CH₄、H₂、O₂ Etc.
Range	(0~100)% (Different specifications can be selected within this range)
Minimum Range — CO	(0~50) ×10^-6
Minimum Range — CO₂	(0~20) ×10^-6
Minimum Range — CH₄	(0~300) ×10^-6
Minimum Range — H₂	(0~2)%
Minimum Range — O₂	(0~1)%
Minimum Range — N₂O	(0~50) ×10^-6
Zero Drift	±1%FS/7d
Range Drift	±1%FS/7d
Linear Error	±1%FS
Repeatability	≤0.5%
Response Time	≤20s
Power	<150W
Power Supply	AC (220±22)V 50Hz
Weight	About 50 Kg

Instrument Characteristics

Multiple Analysis Modules: A QGS-08CN analyzer can be loaded with up to 3 analysis modules. An analysis module includes the basic analysis unit and the necessary electrical components. Analysis modules with different measurement principles have different performance.
Multi-Component Measurement: QGS-08CN analyzer with a time interval of 0.5…20 seconds (depending on the number of components measured and the basic measurement range) measures all components simultaneously.
Touch Screen: 7 inch touch screen can display real-time measurement curve, easy to operate, friendly interface.
Concentration Compensation: Can compensate the cross interference to each component.
Status Output: QGS-08CN has a total of 8 relay outputs, including zero calibration state, terminal calibration state, fault state, alarm state, etc. Users can choose the corresponding output position for a certain state output according to the actual situation.
Data Retention: When you perform calibration or other operations on the instrument, the instrument can maintain the data status of the current measurement value.
Signal Output: Standard current loop output, digital communication. (1) There are 4 analog measurement outputs (4...20mA). You can select a measurement component corresponding to a signal output, or you can select a measurement value output corresponding to multiple output channels. (2) RS232, MODBUS-RTU that can be directly connected to the computer or DCS system.
Intermediate Range Function: That is non-zero starting point measurement.
Zero Gas: For zero calibration, two different zero gas values can be set as nominal values. This allows you to calibrate different analysis modules that require different zero gases. You can also set negative values as nominal values to compensate for lateral sensitivity interference.
Standard Gas: For terminal calibration, you can set 4 different standard gas nominal values. You can also set which measurement components are calibrated with which standard gases.

Product Application

Environmental monitoring such as emissions of air pollution sources
Petroleum, chemical and other industrial control
Agriculture, health care and scientific research
Determination of gas content in various combustion tests in laboratory
Air quality monitoring in public places

Frequently Asked Questions

Q What measurement principle does the QGS-08CN modular gas analyzer use?

The QGS-08CN uses the infrared photoacoustic method as its primary measurement principle, enabling multi-component gas detection. It can also integrate other modules such as paramagnetic, electrochemical, thermal conductivity, and trace water detection modules depending on requirements.
Q How many analysis modules can the QGS-08CN accommodate simultaneously?

The QGS-08CN can be loaded with up to 3 analysis modules at the same time, including up to two thin-film microsound detection modules and one thermal conductivity or electrochemical (paramagnetic oxygen) module.
Q What gases can the QGS-08CN detect and what are the minimum measurement ranges?

The analyzer can detect CO, CO₂, CH₄, H₂, O₂, N₂O and more. Minimum ranges include CO (0–50)×10⁻⁶, CO₂ (0–20)×10⁻⁶, CH₄ (0–300)×10⁻⁶, H₂ (0–2)%, O₂ (0–1)%, and N₂O (0–50)×10⁻⁶.
Q What communication interfaces does the QGS-08CN support?

The QGS-08CN supports standard 4–20mA analog current loop outputs (4 channels), as well as RS232 and MODBUS-RTU digital communication protocols, allowing direct connection to computers or DCS systems.
Q In which industries and applications is the QGS-08CN commonly used?

The QGS-08CN is widely used in environmental monitoring (air pollution emissions), petroleum and chemical industry control, agriculture and healthcare research, laboratory combustion gas analysis, and public place air quality monitoring.
Q What are the power supply requirements and weight of the QGS-08CN analyzer?

The QGS-08CN operates on AC (220±22)V at 50Hz with a power consumption of less than 150W. The instrument weighs approximately 50 kg.