Principle of methane non methane total hydrocarbon analyzer

Portable chromatographThe system is suitable for
Emission online continuous monitoring system Technical requirements for the functional design, structure, performance, packaging, transportation, installation, and testing of chromatography systems.

Implementing national standards and regulations:
Technical Requirements for Installation and Networking of Non Methane Total Hydrocarbon Online Detection System for Fixed Pollution Sources in Shanghai
Technical Requirements and Testing Methods for Continuous Monitoring of Flue Gas Emissions from Fixed Pollution Sources [HJ-T76-2001]
Data Transmission Standard for Pollution Source Online Automatic Monitoring System [HJ-T212]

Methane Non Methane Total Hydrocarbon AnalyzerNot only can it accelerate the analysis cycle and improve work efficiency, but it also has many advantages such as easy operation, accurate data, and multi-functional one machine.

　　Principle of methane non methane total hydrocarbon analyzer Characteristics:

1. The instrument has various functions such as power on self-test, power-off protection, automatic restart, automatic ignition, and automatic calibration, ensuring high sensitivity, stability, and repeatability of the entire instrument.

2. The automatic sampling system can be connected to various sample inputs, and the data processing system can be integrated with the data transmission modules of various central control systems to ensure real-time sampling, remote control, real-time transmission, and real-time results.

Instructions for using the methane non methane total hydrocarbon analyzer:

1、 Daily monitoring of analytical instruments, gas processing systems, high-temperature probes, cooling water, and purge gas

Conduct inspections on complete sets of system equipment, including:

1. Check if the instrument displays any fault alarms

2. Observe the changes in sample gas flow rate

3. Condenser operating status

4. Peristaltic pump drainage or water accumulation in the reservoir

5. Whether the operating status of the analytical instrument and the indicated values of the analytical instrument are normal

6. Heating condition of sampling probe

7. Compressed air pressure for blowing (greater than 0.3MPa) and manual drainage of the front stage air-water separator

8. Does the humidity alarm membrane filter sound an alarm, and does the high-precision filter have water or dust ingress

9. Usage of standard gas

10. Analyze the temperature inside the instrument room

11. Other abnormal situations during operation, etc

2、 Regularly (within one month) perform zero and range calibration on the measured components of analytical instruments, and keep records. When calibrating analytical instruments, the calibration of standard gas cylinders is crucial

Application of methane non methane total hydrocarbon analyzer:

Smoke emission detection

Monitoring of trace hydrocarbons in environmental gases

Vehicle and internal combustion engine emission monitoring

Emission boundary monitoring

Detection of trace hydrocarbons in environmental gases

Monitoring of hydrocarbon emissions

Catalytic conversion test

Engine combustion efficiency detection

Monitoring of hydrocarbon pollution in air or other gases

Precautions for using a methane non methane total hydrocarbon analyzer:

1. Whether the oxygen content in the standard gas and sample gas is * is one of the factors affecting the accuracy of this method. When preparing a series of methane and propane standard gas samples with nitrogen as the base gas, high-purity nitrogen can be used as the dilution gas. When analyzing high concentration gas samples diluted with high-purity nitrogen, the method of deducting the blank value with the same dilution ratio of hydrocarbon removal air can be used; To prepare a standard gas with air as the base gas or dilute the sample gas to be tested, purified air can be used directly.

2. It should be ensured that the glass injector used in the analysis has sufficient airtightness and can slide freely during the gas extraction process.

3. The methane and propane standard gas samples prepared in glass syringes lose quickly when placed, and the standard gas series samples should be prepared and used immediately.

4. The nozzle and collection electrode of the gas chromatograph need to be cleaned or replaced regularly according to the quantity of analyzed samples.