Conductivity Meter

Product Details:

A thermal conductive gas analyzer (TGA) is an instrument used to measure the concentration of gases in a mixture by evaluating the thermal conductivity of the gas. The principle behind this type of analyzer is based on the fact that the thermal conductivity of gases varies depending on the type of gas present.

1. Thermal Conductivity: Every gas has a distinct thermal conductivity, which is the ability of a material to conduct heat. When a mixture of gases flows over a heated surface (like a detector), the amount of heat transferred from the surface to the gas will vary depending on the thermal conductivity of the gas.

2. Detector: The analyzer contains a sensor (often a thermistor or thermocouple) that detects the change in temperature caused by the gas mixture. A higher thermal conductivity gas (like helium or hydrogen) will carry away more heat from the sensor, whereas a lower conductivity gas (like carbon dioxide or nitrogen) will result in less heat transfer.

3. Gas Mixture: As the gas mixture passes through the sensor, the analyzer measures how much heat is transferred. The difference in heat transfer is used to determine the concentration of each gas in the mixture based on its known thermal conductivity.

4. Calibration: Thermal conductive gas analyzers are typically calibrated with standard gases so that they can accurately determine the concentration of gases in unknown samples.

   Advantages:

   • Non-Destructive: The process does not alter or destroy the sample gas.

   • Real-Time Monitoring: These analyzers provide real-time data on the concentration of gases.

   • Simplicity: The technology is relatively simple and inexpensive compared to other advanced gas analysis techniques.

     Limitations:

     • Limited to Certain Gases: TGA's are most effective with gases that have significantly different thermal conductivities. If the gases in the mixture have similar thermal conductivities, the analyzer may not provide accurate results.

     • Interference: Other factors, such as temperature, pressure, and the presence of impurities, can interfere with accurate readings.

      

Additional Information:

• Item Code: ATS208A
• Production Capacity: 10
• Delivery Time: 2-3 Week
• Packaging Details: Box Packing