Editing Alcohol Sensor Based on Gas-Sensitive Resistive Materials (section)

=== Environmental Influence (Humidity and Measurement Conditions) ===

The response of the MQ-3 sensor is influenced by external environmental conditions during operation. In addition to ethanol concentration, factors such as humidity, airflow, and spatial distribution of the gas can affect the measured signal.

Humidity is one of the primary environmental factors. Changes in ambient humidity can alter the baseline resistance and modify the sensor response, leading to deviations under identical ethanol concentrations.

In non-controlled environments, the distribution of ethanol vapor is not uniform. The concentration detected by the sensor depends on its position relative to the source and on air movement, which introduces additional variability in the measurement.

Therefore, environmental conditions must be considered when interpreting sensor output. Maintaining consistent measurement conditions is necessary to ensure comparability and reliability.