Gas Fitter Practice Test

Which aspect is most important regarding the sample tube when using a Drager or Gas Tec gas detector?

1. Detector is within the manufacturer's date code

2. Sample tube is within the manufacturer's date code

3. Detector has been inspected and verified

4. The sample tube is CGA approved

The correct answer is: Sample tube is within the manufacturer's date code

The importance of the sample tube being within the manufacturer's date code lies in ensuring the reliability and accuracy of the gas detector readings. Over time, sample tubes can degrade due to environmental factors or chemical exposure, which may affect their performance. If a sample tube is outdated, it may not effectively transport the gas sample to the detector, leading to inaccurate or false readings. Therefore, maintaining the integrity of the sample tube by adhering to the manufacturer's date code is crucial for accurate monitoring of gases. While other options reference the functionality and safety of the gas detection setup, they do not address the specific role the sample tube plays in ensuring accurate and reliable readings from the detector. The sample tube must remain in optimal condition to ensure the detection system functions as intended.