Online Toc Analyser

Therefore, in order to better realize the precise monitoring and control of carbon dioxide content in natural gas, the current more China petroleum co., LTD has introduced Zetron online carbon dioxide analyzer and TH2000-C-CO2-A-H, with its high precision measurement technology and real-time online monitoring function, quickly and accurately detect the carbon dioxide content in natural gas. In this way, enterprises can find and deal with the problem of excessive carbon dioxide content in time, to ensure the stability and environmental protection of the production process. This will not only help to reduce the possibility of accidents, but also to improve the production efficiency and economic benefits of gas enterprises.



Gas industry gas detection solutions:



1. Program background



Terminal CNPC Southwest Oil & Gas Field Branch, medium: natural gas pressure 3.3 MPa, 2.8 Mpa, normal temperature 18℃, components: CH4, C2H6, C3H8, H2S, CO2, N2, H2. Natural gas pipeline measuring CO2,0 ~ 100 PPm (adjustable)



2. Solutions



The overall equipment is of the outdoor type, Can be placed in the open air, The system is equipped with power management and protection system, detector, pumping pump, efficient condensing system, drainage system and other equipment power supply; Equipped with automatic cooling, dehumidification and constant temperature drainage system, The system is equipped with a dust filter and treatment device, Can achieve the purpose of filtering the dust and tar of the measured gas; Detection point pressure maximum of 3.3 MPa, Minimum of 2.8 Mpa, Specification of supporting customized sampling valve: belt / Class600 DN40RJ HG / T 20615-2009; Considering that the detection point is frozen in winter, Power distribution heating system constant temperature control system and 10 meters electric heat tracing pipeline;



3. What product is matched



On-line CO2 analyzer, TH2000-C-CO2-A-H



Dual-stage electronic condensation dehumidification system, power management and protection system, fine dust filtration sampling head (flange installation), long life brushless pump sampling distance of 40 meters, automatic cooling, peristaltic pump drainage, filter tar, reserved manual back interface, sample gas temperature within 600 degrees; suitable for high water vapor, high temperature, the detection and analysis unit is not very high; pump suction detection; with explosion-proof external box;



Detection gas: carbon dioxide CO2; detection range / detection rate / detection principle:



CO2:0-100PPM, 0.01PPM; Imported long life, high precision, high performance, long light range infrared principle sensor;



Concentration unit, display mode, Chinese and English operation interface, 7 inch touch screen operation, import sensor; three wire / four wire system 4-20ma signal + RS485 + relay output;



 Large capacity data storage function (standard 100,000 pieces, larger customizable); multi-mode alarm function, logging function; detector explosion-proof grade: ExdⅡCT6; sampling valve specification: belt / Class600 DN40RJ HG / T 20615-2009; contact medium part is 316 / 304 stainless steel; power distribution heat tracing system and 10 m electric heat tracing pipeline;













In short, through the application of Zetron online carbon dioxide analyzer, it can not only provide reliable products and solutions, but also help gas enterprises to achieve safe production and efficient operation, so as to improve the market competitiveness of enterprises. In the future, Zetron will continue to uphold the concept of professional and innovation, bring more high-quality and efficient solutions to the gas industry, and promote the sustainable development of the whole industry.

Carbon monoxide CO is the main occupational disease hazard factor in metallurgical iron and steel enterprises, with many workplaces, wide distribution range, and wide contact with the crowd. The content of carbon monoxide in the gas is about 30%, and carbon monoxide poisoning may occur in the posts exposed to the gas if no attention is paid to the protection.











Harmful gas introduction in metallurgical :






50ppm    Permissible exposure concentration for 8 hours of exposure (OSHA).



200ppm   2-3h may cause a mild forehead headache.



400ppm   1-2h Forehead headache with vomiting , 2.2-3.5h vertigo.



800ppm   45min Headache, dizziness, and vomiting, 2h coma and possible death.



1600ppm  20min Headache, dizziness, and vomiting, 1h coma and possible death.



3200ppm  5-10min Headache, dizziness, and vomiting, 30min coma and possible death.



6400ppm  1-2min Headache, dizziness, and vomiting, 1-15min coma and possible death.



12800ppm  Immediate unconsciousness. 1-3 min danger of death.












Models:



MIC-500S-CO-A , MIC-500S-O2-A



 



The fixed gas detector will be the metallurgical iron and steel enterprises potential hazardous areas for 24 hours harmful gas monitoring, and through the 4-20mA signal transmission to the DCS system for centralized monitoring and control, on-site detection of hazardous gases or oxygen concentration decline to make sound and light alarm action.







Features:



★Explosion-proof, lightning-proof, anti-static, put reverse connection, anti-EMI, EMC electromagnetic interference, anti-pulse surge current shock



★Three-wire or two (four) wire 4-20mA standard signal output, voltage output, 2 groups of relay switch quantity



★At the same time has a standard bus system RS485 output (RTU format), optional integrated sound and light alarm.



★Optional wired transmission, LAN, Internet, wireless transmission (2 kilometers, 5 kilometers, unlimited distance)



★Wireless transmission mode can be selected 433, GPRS, WIFI, other methods



★Standard infrared remote control can be operated in dangerous occasions without opening the lid, remote control distance 15 meters, simple and practical



★Each unit can be switched with each other, automatic tracking zero point to prevent drift, multi-level calibration. Support OEM or ODM customization



★Can communicate with computer, real-time monitoring of the concentration of the on-site probe through the upper computer and store and analyze and print data on the computer.



★Meet the latest national standards and obtain CMC production license for measuring instruments, explosion-proof certification and other qualifications



Application:



Mainly used in industrial production, chemical industry, petrochemical, mining, shipping, natural gas, gas, city gas, metallurgy and other fields.

Project  background



Nitrogen oxides mainly include N2O, NO, NO2, N2O3, N2O4, N2O5 and so on. Among them, the nitrogen oxides formed during the combustion process are almost all N0 and NO2, and these two nitrogen oxides are usually called NOX. At present, among the nitrogen oxides produced by natural mineral dyes such as coal, natural gas and heavy oil, NO accounts for about 90%, and the rest is NO2.



The harm of nitrogen oxides is huge: (1) Endanger the health of people. (2) Harm the growth of forests and crops. (3) Significant impact on global climate change and severe damage to the high-altitude ozone layer.



Known from the formation principle of flue gas pollution components, oxygen is its key component. In the actual production process, when the boiler is burned with fuel, excess air is generally added. On the one hand, the fuel can be fully burned, but another problem also arises. The concentration of pollutants discharged from the exhaust pipe produces "dilution", which greatly Reducing the emission concentration will cause the pollutant emission concentration to reach the “false” standard. Excessive air causes the furnace temperature to drop, which not only affects the combustion, but also takes away a lot of heat and dust, increasing the calculation result of the pollution emission concentration. At the same time, the large air volume also increases the power consumption of smoke exhaust. Controlling the oxygen content of flue gas is very important for controlling the combustion process and achieving safe, efficient and low-pollution emissions.



The emission concentration of sulfur dioxide and nitrogen oxides in the flue gas should be converted according to the specified excess air coefficient, and the size of the conversion value depends on the measured value of the flue gas oxygen content. Therefore, the oxygen content in the flue gas is controlled during operation. Controlling the final emission concentration of pollutants is crucial. A flue gas analyzer is usually used to monitor the oxygen content in the flue gas. The core technology for detecting gas is a gas sensor. At present, electrochemical sensors are widely used.



Design monitoring items: detection of NOX, O2, optional monitoring of SO2, CO, CO2, etc.









Scheme details



First of all, through front-end dust filtration, cooling, water vapor separation through the pretreatment system condenser, and measuring the content of NO, NO2, O2 with a composite gas detector; then according to the provisions of GB5468 or GB/T16157, the atmospheric pollutant reference content Oxygen emission concentration conversion method, conversion of nitrogen oxide emission concentration. The measured gas concentration is displayed on the display screen in real time, and the data signal is transmitted to the terminal such as PLC or computer. It can also be transmitted to the cloud server through wireless GPRS or network, or connected to the environmental protection bureau through the data acquisition instrument for real-time supervision.

In laboratory environments within the petrochemical industry, wastewater often contains complex and high concentrations of organic compounds. Ensuring accurate and efficient monitoring is essential—not only for regulatory compliance but also for internal process control and environmental responsibility.

Recently, Beijing Zetron Technology Co., Ltd. supported a petrochemical laboratory in upgrading its wastewater monitoring capabilities using the TA-205E Total Organic Carbon (TOC) Analyzer. This project provided a practical example of how automation and wide-range detection can significantly improve laboratory efficiency.



The Challenge
The laboratory faced several common but critical challenges:


Complex wastewater composition with high organic load
Large number of samples requiring routine analysis
Need for a wide detection range to reduce repeated dilution
Desire to minimize manual operation and improve workflow efficiency



The Solution
To address these needs, the laboratory implemented the TA-205E TOC Analyzer, configured with a 24-position automatic sampler for unattended operation.

Key features included:


Wide measurement range: 0–30,000 mg/L
Automated batch analysis: supports continuous multi-sample testing
High adaptability: suitable for high-concentration laboratory wastewater
User-friendly operation: reduces reliance on manual handling



Results & Benefits
After implementation, the laboratory observed clear improvements:

1. Improved Throughput
The 24-position autosampler enabled continuous testing, significantly increasing daily sample capacity.

2. Reduced Manual Workload
Automation minimized repetitive manual tasks, allowing staff to focus on higher-value analytical work.

3. Reliable and Consistent Data
The system delivered stable and reproducible results, supporting both compliance monitoring and internal quality control.

4. Flexible Measurement Capability
The wide detection range reduced the need for frequent dilution, simplifying the workflow.



Broader Applications
Beyond petrochemical laboratories, the TA-205E TOC Analyzer is well-suited for a wide range of applications, including:


Environmental monitoring
Municipal drinking water and wastewater treatment plants
Chlor-alkali industry
Food & beverage production
Power plants
Pulp & paper industry
Manufacturing industries
Pharmaceutical sector
Scientific research



Final Thoughts
As environmental regulations become increasingly stringent, laboratories are under growing pressure to improve both accuracy and efficiency in water quality analysis. This case demonstrates how the right TOC solution can streamline operations while delivering dependable results.

At Beijing Zetron Technology Co., Ltd., we continue to work closely with industry partners to provide reliable analytical solutions tailored to real-world challenges.