Pressure transient normalization within a gas detector

A method for normalizing pressure near a gas sensor, the method comprising:

• pumping air toward the gas sensor using a pump;
• directing the air toward the gas sensor via a cavity located proximate to the gas sensor;
• opening a first valve in a rectifier assembly within the cavity to allow airflow toward the gas sensor from the pump;
• and
• when the pressure within the cavity changes, opening a second valve in the rectifier assembly to normalize the pressure within the cavity proximate to the gas sensor.

A rectifier assembly for use with a gas detector, the rectifier assembly comprising:

• a flow barrier;
• a first valve connected to the flow barrier and configured to open to allow airflow from a pump of the gas detector toward a gas sensor of the gas detector;
• a second valve connected to the flow barrier and configured to open to normalize pressure within a cavity of the gas detector that is located proximate to the gas sensor, when the pressure within the cavity changes, wherein the airflow toward the gas sensor is directed via the cavity;
• and
• one or more retainer rings configured to position the first valve, the second valve, and the flow barrier with respect to one another, and further configured to position the rectifier assembly within the cavity of the gas detector,
• wherein the rectifier assembly is configured to be located between the pump and the at least one gas sensor of the gas detector, and
• wherein the rectifier assembly is configured to normalize the pressure proximate to the gas sensor.