Gas Monitoring Systems are required to provide timely feedback to a control system to allow for combustion efficiency adjustments. These monitoring systems may be required to measure NOx on the inlet and outlet of an SCR to control ammonia injection or measure ammonia on the outlet of the SCR. Other applications for process monitoring may require measurements such as Carbon Monoxide. Oxygen, Carbon Dioxide, and/or hydrocarbons. These measurements must be made in a timely manner.