Gas detection apparatus and method utilizing an integral temperature correction device

An apparatus for measuring the concentration of a target substance, said apparatus comprising:

• a detection container having a detection material chemically reactive with the target substance to produce an observable indication upon exposure to the target substance, a measured concentration of the target substance being readable from the observable indication;
• a pump engageable with the detection container and operable to draw a sample of a gaseous environment into the detection container, the drawn sample containing the target substance, such that the detection material is exposed to the target substance;
• and
• an integral temperature correction factor indicator having a plurality of temperature correction factors displayed thereon such that said integral temperature correction factor indicator indicates a correction factor applicable to the measured concentration of the target substance at a specific temperature.

A method of measuring the concentration of a target substance in the field, the method comprising the steps of:

• providing an apparatus for detecting the presence of the target substance, the apparatus including:
• a detection container having a detection material chemically reactive with the target substance to produce an observable indication upon exposure to the target substance, a measured concentration of the target substance is detected and being readable from the observable indication;
• and a pump engaged with the detection container and operable to draw a sample of a gaseous environment into the detection container, the sample containing the target substance, such that the detection material is exposed to the target substance;
• applying to an outer surface of the pump, a temperature correction factor indicator that includes a plurality of correction factors that indicate a correction factor applicable to the measured concentration when said measured concentration is measured at a specific temperature;
• operating the pump of the apparatus in the field to detect the presence of a concentration of the target substance;
• obtaining, from the apparatus, the measured concentration of the target substance;
• obtaining, from the apparatus, an indicated temperature correction factor to be applied to the measured concentration;
• and
• multiplying the indicated temperature correction factor to the measured concentration to obtain an accurate concentration of the detected target substance.