Overview
Thermal conductivity gas analyzer is an effective method to measure one of two components in a gas mixture (the thermal conductivities differ a lot). Mainly used to measure the content of hydrogen (H2), carbon dioxide (CO2), argon (Ar), etc.
Principle
When the sample gas enters the thermal conductivity cell which is heated at a constant temperature of 63°C, and a thermistor is used above the film to maintain a constant temperature of 135°C. In this way, a small cavity is formed below and above the membrane, and the measurement gas can diffuse into it. In this way, the heat loss caused by the thermal conductivity of the sample gas is compensated by heating, and the voltage required to maintain a constant temperature of the membrane is a measurement of the thermal conductivity of the measured gas.
Application
• Measurement of hydrogen (H2) content in synthesis gas of ammonia plant
• Purity measurement of hydrogen (H2) in hydrogenation unit
• Measurement of oxygen (O2) in pure hydrogen (H2) and hydrogen (H2) in pure oxygen (O2) in the process of producing hydrogen by electrolysis of water and oxygen
• Hydrogen (H2) content measurement in hydrocarbon gas
• Monitoring of hydrogen (H2) and carbon dioxide (CO2) content in hydrogen-cooled generator sets
• Measurement of hydrogen (H2) in chlorine (Cl2) in the chlorine production process
• Measurement of chlorine (Cl2) in the chlorine production process
• Measurement of carbon dioxide (CO2) content in flue gas of furnace combustion
• Argon (Ar) content measurement in air separation plant
• Monitoring in the production of pure gases, such as helium (He) in nitrogen (N2) and argon (Ar) in oxygen (O2)
• Sulfur dioxide (SO2) content measurement in the production process of sulfuric acid and phosphate fertilizer
Features
• Optional NDIR sensor for compensation
• Corrosion protection
Sensor surface is coated with Polymer layer(4µm) which will not affect the excellent measurement performance of the sensor unit.
• Condensation and dust protection
The sintered glass with µm-sized holes is used to protect the sensor so that gas molecules can pass through, but liquid water molecules are not permeable. In addition, the sintered glass protective layer also reduces the dependence on gas flow.
• Optional mass flow measurement and controller
• Multiple gas measurement modes
The analyzer has 16 built-in binary mixed gas measurement modes and calibration curve.
• Convenient
The navigation menu contains 6 languages, which can be operated easily.
• Process safety
7" large size color LCD touch screen, convenient and safe touch operation and debugging
Large size screen with red flashing alarm, clearly visible from long distances and in dark areas
Alarm immediately, safe the process
• Data alarm record
Real-time data curve display
Record function for up to 6000 alarms
• Expert calibration function
Multi-point calibration function up to 9 point
• Powerful self-diagnosis function
Built-in heartbeat monitoring function and watchdog
Monitor the status of analyzer and sensors, and promptly remind customers to take necessary maintenance
High-standard hardware and software security and password protection
• Powerful control function
High(low) limit control function
Optional: Timer control(automatic cleaning) function
Optional: analog PID control function
Optional: PWM control function
• Flexible fieldbus communication functions for IOT4.0
Optional fieldbus MODBUS, HART, Foundation Fieldbus FF, PROFIBUS PA, PROFIBUS DP, etc.
• ATEX EExd II CT4 Optional
Measurement range
Measuring gas | Background Gas | Range | Min. range 1 | Min. range 2 | Gas mixtures |
Hydrogen(H2) | Nitrogen (N2) or air | 0% – 100% | 0% – 0.5% | 98% – 100% | Yes |
Hydrogen(H2) | Argon (Ar) | 0% – 100% | 0% – 0.4% | 99% – 100% | Yes |
Hydrogen(H2) | Helium (He) | 20% – 100% | 20% – 40% | 85% – 100% | |
Hydrogen(H2) | Methane(CH4) | 0% – 100% | 0% – 0.5% | 98% – 100% | |
Hydrogen(H2) | Carbon dioxide (CO2) | 0% – 100% | 0% – 0.5% | 98% – 100% | |
Hydrogen(H2) | Oxygen(O2) | 0% – 100% | 0% – 0.8% | 97% – 100% | |
Carbon dioxide (CO2) | Nitrogen (N2) or air | 0% – 100% | 0% – 3% | 96% – 100% | Yes |
Carbon dioxide (CO2) | Argon (Ar) | 0% – 60% | 0% – 10% | — | Yes |
Argon (Ar) | Oxygen(O2) | 0% – 100% | 0% – 3% | 96% – 100% | Yes |
Argon (Ar) | Carbon dioxide (CO2) | 40% – 100% | — | 80% – 100% | Yes |
Argon (Ar) | Xenon (Xe) | 0% – 100% | 0% – 3% | 99% – 100% | |
Nitrogen (N2) | Argon (Ar) | 0% – 100% | 0% – 3% | 97% – 100% | Yes |
Nitrogen (N2) | Hydrogen(H2) | 0% – 100% | 0% – 2% | 99.5%– 100% | Yes |
Oxygen (O2) | Nitrogen (N2) | 0% – 100% | 0% – 15% | 85% – 100% | Yes |
Oxygen (O2) | Argon(Ar) | 0% – 100% | 0% – 2% | 97% – 100% | Yes |
Oxygen (O2) | Carbon dioxide (CO2) | 0% – 100% | 0% – 3% | 96% – 100% | Yes |
Methane (CH4) | Nitrogen (N2) or air | 0% – 100% | 0% – 2% | 96% – 100% | Yes |
Methane (CH4) | Argon (Ar) | 0% – 100% | 0% – 1.5% | 97% – 100% | Yes |
Neon (Ne) | Argon (Ar) | 0% – 100% | 0% – 1.5% | 99% – 100% | |
Helium (He) | Nitrogen (N2) or air | 0% – 100% | 0% – 0.8% | 97% – 100% | Yes |
Helium (He) | Argon (Ar) | 0% – 100% | 0% – 0.5% | 98% – 100% | Yes |
Krypton (Kr) | Argon (Ar) | 0% – 100% | 0% – 2% | 96% – 100% | |
Deuterium gas (D2) | Nitrogen (N2) or air | 0% – 100% | 0% – 0.7% | 96% – 100% | |
Deuterium gas (D2) | Helium (He) | 0% – 100% | 0% – 5% | 70% – 100% | |
Sulfur hexafluoride (SF6) | Nitrogen (N2) or air | 0% – 100% | 0% – 2% | 96% – 100% | |
Nitrogen Dioxide (NO2) | Nitrogen (N2) or air | 0% – 100% | 0% – 5% | 96% – 100% | |
Extinguishing gas (R125) | Nitrogen (N2) or air | 0% – 100% | 0% – 5% | 98% – 100% |
Application case list:
No. | Industry | Tasks | Measurement | Range | Background Gas |
1 | Chemicals | Hydrogen as impurity | H2 | 0-0,5% | Ar, N2, O2 |
2 | Chemicals | Hydrogen production by electrolysis | H2 | O2 | |
3 | Chemicals | Ammonia (NH3) production | H2 | NH2, Air | |
4 | Chemicals | Fertilizer production methanation furnace and ammonia (NH3) converter export | H2 | 50-100% | N2, CH4, NH3, Ar |
5 | Air Separation, Chemicals | Hydrogen purity | H2 | 99-100% | N2, O2, HC, Air, SIH4 |
6 | Air Separation, Chemicals | Argon refining process | H2 | Ar | |
7 | Metallurgy | Annealing furnace H2, N2 anti-oxidation | H2 | N2, ppm O2 | |
8 | Metallurgy | Blast furnace gas | H2 | 0-20% | N2, CO, CO2, H2O |
9 | Metallurgy | Blowing Oxygen Furnace (BOF) | H2 | 0-10% | N2, O2, H2O, O2, CO, CO2, Fuel gas |
10 | Metallurgy | Pig iron for steel plants | H2 | % | |
11 | Metallurgy | Heat treatment H2, N2 | H2 | 0-5% ; 10%; 20% | N2, ppm O2 |
12 | Metallurgy | Protective Gas | H2 | Air, N2 | |
13 | Metallurgy | Hydrogen removal, monitoring of H2 discharge from the metal melt | H2 | N2 | |
14 | Chemical & Pharmaceutical | Quality Inspection | Impurity | Ar | |
15 | Glass production | Flat glass production | H2 | 0-10% | N2 |
16 | Food & Beverage, Medical Technology | Gas Mixing | |||
17 | Semiconductor Industry | Monitoring Process | H2 | 0-8% | Ar |
18 | Power plant | Turbine Generator | H2 | 0-100% | CO2 or Ar |
19 | Power plant | Turbine Generator | Air | 0-100% | CO2 or Ar |
20 | Power plant | Turbine Generator | H2 | 90-100% | Air |
21 | Power plant | Turbine Generator | H2 | 90-100% | Air |
22 | Power plant | Turbine Generator | H2 | Air | |
23 | Nuclear Power | Nuclear energy, monitoring deuterium in the air (D2) | D2 | 0-5% | D2, Air |
24 | Nuclear Power | Nuclear power plant, vacuum dragging reconstructor after condenser | H2 | 0-5% | N2, O2 |
25 | Nuclear Power | Nuclear power plants, hydrogen propagation analysis to avoid flammable atmosphere | H2 | 0-20% | Air |
26 | Petrochemical | Acetone, phenol, isopropylbenzene production | H2 | 50-100% | N2, CH4 |
27 | Petrochemical | H2 production from isocyanate in feed gas | H2 | 0-1Vol% | CO |
28 | Petrochemical | Aromatic lift gas tube, N2 header and regulator hopper | HC, H2 | 0-15% 0-1% | НС |
29 | Petrochemical | Caprolactam production H2 purity | H2 | 70-100% | N2, ppm NH3, ppm CO |
30 | Petrochemical | Hydrocracker unit cycle gas compressor | H2 | 50-100% | Hydrocarbons |
31 | Petrochemical | Hydrocracker make-up gas | H2 | 50-100% | Hydrocarbons |
32 | Petrochemical | Hydrocracker downstream collection point | H2 | 50-100% | Hydrocarbons |
33 | Electrical industry | Welding | H2 | N2 | |
34 | Life Sciences & Medical Applications | Nitrous oxide anesthetic dose N2O | N2O | N2 | |
35 | Automotive, Power Generation, Renewable Energy | Fuel Cell | H2 | O2, N2 |
Product datasheet: Thermal Conductivity Gas Analyzer 
, if you need more information, please contact us at info@mzdd.de.
Chlorine Analyzer, Methane Analyzer, Argon Analyzer, Sulfur Hexafluoride Analyzer, R125 analyzer, Deuterium Analyzer, Krypton Analyzer, Helium Analyzer, Neon analyzer, Nitrogen Analyzer, Nitrogen dioxide analyzer, Carbon Dioxide Analyzer, Hydrogen Analyzer, Oxygen Analyzer,TCD Analyzer