After stabilization, which instrument is used to test products of combustion and note the results?

After stabilization, which instrument is used to test products of combustion and note the results?

• A. Combustion efficiency analyzer
• B. Thermometer
• C. Manometer
• D. Flame color chart

Answer: (A)

The key idea is using a device that analyzes the gases produced by the burner to judge how cleanly and efficiently it is burning fuel. A combustion efficiency analyzer (flue gas analyzer) is designed for this purpose. After the system has stabilized, it measures the levels of oxygen, carbon dioxide, and often carbon monoxide in the flue gases. These readings tell you how much excess air there is and how completely the fuel is being burned. With this information you can fine-tune the air-fuel ratio to improve efficiency and reduce emissions and risks (like CO formation). Other instruments don’t provide that gas composition data: a thermometer only measures temperature, not how well combustion is happening; a manometer gauges pressure differences, not combustion products; a flame color chart offers a qualitative view of flame appearance but doesn’t quantify the actual exhaust composition needed to evaluate performance.

The key idea is using a device that analyzes the gases produced by the burner to judge how cleanly and efficiently it is burning fuel. A combustion efficiency analyzer (flue gas analyzer) is designed for this purpose. After the system has stabilized, it measures the levels of oxygen, carbon dioxide, and often carbon monoxide in the flue gases. These readings tell you how much excess air there is and how completely the fuel is being burned. With this information you can fine-tune the air-fuel ratio to improve efficiency and reduce emissions and risks (like CO formation).

Other instruments don’t provide that gas composition data: a thermometer only measures temperature, not how well combustion is happening; a manometer gauges pressure differences, not combustion products; a flame color chart offers a qualitative view of flame appearance but doesn’t quantify the actual exhaust composition needed to evaluate performance.