Calibration system and method for a gas detector

A method for calibrating a gas detector, the method comprising:

• regulating, via at least one processor communicatively coupled to a valve and a heating element, the valve to release a gas into a diffusion chamber, wherein the diffusion chamber has a first side coupled to the gas detector and a second side coupled to a filter, wherein a container is coupled to the diffusion chamber via the valve, wherein the container includes an absorbent configured to retain the gas and a heating element configured to heat the absorbent to release the gas from the absorbent to the diffusion chamber through the valve;
• determining, via the at least one processor, a change in a signal reading of the gas detector associated with a diffusion of gas from the filter;
• determining, via the at least one processor, a sensitivity drift factor of the gas detector based at least on the change in the signal reading of the gas detector;
• determining, via the at least one processor, a change in concentration of the gas based at least on the sensitivity drift factor for calibrating the gas detector;
• and,
• calibrating, via the at least one processor, the gas detector based at least on the change in concentration.