G2 Gas Fitter Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the G2 Gas Fitter Test. Study using flashcards and multiple choice questions, with hints and detailed explanations for each question. Ensure your success!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the normal drop-out reading of a thermocouple flame sensor?

0-1 mV
2-4 mV
5-10 mV
10-15 mV

The correct answer is: 2-4 mV

The normal drop-out reading of a thermocouple flame sensor is typically found within the range of 2-4 mV. This reading is crucial for the safe operation of gas appliances, as it indicates whether the sensor is able to detect the presence of a flame. A reading within this range suggests that the sensor is functioning properly, providing a sufficient voltage signal when a flame is present to maintain the operation of safety mechanisms, such as the gas valve. When the voltage falls below this range, it may indicate an issue with the flame or sensor, leading to the gas valve closing to prevent unsafe conditions. Understanding the normal operational range of the thermocouple is essential for diagnosing problems in gas appliances and ensuring that the safety measures are effective. This knowledge helps gas fitters maintain compliance with safety standards and prevent potential hazards in gas systems.