Mechanical Vent Test 4 Practice

During calibration, which action is recommended to address signal drift?

Change the electrolyte and sensor's membrane Recalibrate the monitor Replace the sensor Increase the heating

Correct Answer:

Change the electrolyte and sensor's membrane

Explanation:

Signal drift often comes from the sensor’s aging parts, especially electrolyte depletion and fouling or degradation of the sensing membrane. Refreshing the electrolyte and replacing the membrane restores the electrode’s proper chemical environment and reaction characteristics, returning the sensor to its intended baseline and producing a stable, accurate calibration. Recalibrating alone can mask the drift without fixing its cause, so readings may drift again. Replacing the sensor is an option if the sensor is worn out, but refreshing the electrolyte and membrane targets the root issue first. Increasing heating does not address the chemical factors causing drift and can alter readings or damage the sensor.

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