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Thermal Conductivity Analyzer(TCD,ATEX)

2021-04-131282

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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

• 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.

• Built-in flowmeter

     Built-in Thermal mass flowmeter

 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.

现场

• 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



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