Model AUTO-purge III - Combustion Air Station - Brochure

Air Monitor’s AUTO-purge III is designed for applications where the continuous exposure to airborne particulate might impair the measurement accuracy of Air Monitor’s Combustion Air (CA) Station or VOLU-probe/SS array. When activated by an Air Monitor “smart” flow transmitter (such as the VELTRON II, MASS-tron II or VELTRON DPT-plus) or a distributed control system, a combination of valves are operated to introduce high pressure/high volume air to the flow measurement device’s sensing ports for a short duration while simultaneously isolating the transmitter from overpressurization. This periodic purging assists in maintaining the sensing ports of the total and static pressure manifolds in a clear, unobstructed condition.