During calibration gas exposure, readings are adjusted to the certified gas concentration during which calibration?

During calibration gas exposure, readings are adjusted to the certified gas concentration during which calibration?

• A. Zero Calibration
• B. Full Calibration
• C. Full / Span Calibration
• D. Span Calibration

Answer: (C)

Calibration relies on matching the sensor’s readings to known reference values. Zero calibration is about setting the baseline using a gas with effectively zero concentration, so it doesn’t bring the reading to a certified concentration. Span calibration, using a calibration gas of known concentration, adjusts the sensor’s response to that specific value but doesn’t restart the baseline. The full process, often labeled Full / Span Calibration, combines both steps and includes exposing the sensor to calibration gas to adjust its readings to the certified concentration, ensuring accuracy across the entire range.

Calibration relies on matching the sensor’s readings to known reference values. Zero calibration is about setting the baseline using a gas with effectively zero concentration, so it doesn’t bring the reading to a certified concentration. Span calibration, using a calibration gas of known concentration, adjusts the sensor’s response to that specific value but doesn’t restart the baseline. The full process, often labeled Full / Span Calibration, combines both steps and includes exposing the sensor to calibration gas to adjust its readings to the certified concentration, ensuring accuracy across the entire range.