A valve for controlling the flow of a gas therethrough which requires no machining in order to attain an effective seal between the valve seating surface and a rotatable plug element. The result is a base composition signature which is then matched against a database of base composition signatures, by which the bioagent is identified. The estimated driveline torque may provide feedback for adjusting operation of a driveline disconnect clutch andor engine torque. The filter media support system is securely anchored to the infrastructure of the underdrain system thereby inhibiting media penetration of the filter bottom and avoiding seal failures. The display may provide a high dynamic range.