Abstract: A method includes determining by a computing system a plurality of automated clearing house (ACH) data conversion rules and converting ACH data into converted ACH data according to the determined ACH data conversion rules. Each of the plurality of ACH data conversion rules includes a name associated with a source data field, a name associated with a target data field, and an instruction indicating how to convert ACH data in the source data field into converted ACH data to be stored in the target data field.

Abstract: Apparatus is disclosed to accurately measure and analyze multiple component interfering gases which coexist in the stack gas effluent generated from a combustion process which utilizes a non-dispersive, narrowband infrared absorption technique. The apparatus includes a probe in the stack with an optical measurement cavity (34) through which the stack gases are passed. A transceiver (14) mounted to the probe includes an optical portion operatively associated with the measurement cavity including a chopped light source (54), (60), (62) for projecting beams of light into the measurement cavity and a detector (86) for detecting the attenuation of the gases to provide a measure of the extent of absorption of each gas of interest. A control unit, preferably remote from the transceiver, preferably a programmed digital computer, and preferably via a J-box (18) converts the electric outputs to a corresponding % modulation and in turn corrects for temperature, pressure and interference between gases.