For Oxygen analyzer, identify the key principle upon which the analyzer is working,
Direct Answer
Option D: A difference in the thermal conductivity of the oxygen with respect to air is developed and this causes an imbalance in the resistance.
Some oxygen analyzers, particularly those employing thermal conductivity principles, detect oxygen by measuring its unique thermal conductivity compared to other gases. This difference causes a change in the heat dissipation from a heated filament, leading to an imbalance in a Wheatstone bridge circuit. This resistance change is then correlated to the oxygen concentration, a valid method for gas analysis.
All Options
Detailed Explanation & Context
Some oxygen analyzers, particularly those employing thermal conductivity principles, detect oxygen by measuring its unique thermal conductivity compared to other gases. This difference causes a change in the heat dissipation from a heated filament, leading to an imbalance in a Wheatstone bridge circuit. This resistance change is then correlated to the oxygen concentration, a valid method for gas analysis.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).
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