A PROPOSED CONTINUOUS MONITOR FOR STACK EMISSION OR PROCESS EFFLUENTS WITH RECORDER/CONTROLLER FUNCTION

A SOURCE ANALYZER IS DESCRIBED THAT CAN MONITOR STACKS AND PROCESS STREAMS AND EXERCISE COMPUTER FEEDBACK CONTROL TO OPTIMIZE COMBUSTION OR OTHER PROCESSES TO MINIMIZE POLLUTION. THE PROPOSED MONITOR EMPLOYS THE OPTICAL TECHNIQUE OF IR GAS FILTER CORRELATION FOR ALL SPECIES, USESEXTRACTIVE SAMPLING BY MEANS OF A PROBE, IS SMALL IN SIZE, RELATIVELY INEXPENSIVE, AND CAN BE CONTROLLED BY AN INTERNALOR EXTERNAL COMPUTER. A STEPPER MOTOR DRIVEN MULTIGAS FILTER CORRELATION WHEEL UNDER COMPUTER CONTROL WOULD BE USED TO ANALYZE EACH OF THE GASES TO BE DETECTED, AND THESE GASES WOULD BE MEASURED IN A SINGLE MULTIREFLECTIVE MEASUREMENT PHOTOMETER. GASES THAT COULD BE MEASURED INCLUDE: CO, CO2, SO2, N2O, NO, NO2, HC'S, NH3, CH3, HCL, ETC. SINCE THESE GASES CAN BE DISTINGUISHED BY SPECTRAL CORRELATION TECHNIQUES. THE ANALYZER'S PHOTOMETER AND ASSOCIATED HARDWARE WOULD BE OPERATED AND CONTROLLED BY A SMALL RESIDENT MICROPROCESSOR SYSTEM. THIS IN TURN WOULD COMMUNICATE INTERFACE TO EITHER A SELF-CONTAINED OR EXTERNAL COMPUTER OF THE IBM PC TYPE EMPLOYING MICROSOFT DISK OPERATING SYSTEM (MS-DOS). THE LATTER, WOULD PERFORM ALL MATHEMATICAL, DATA MANIPULATION, AND PROCESS FEED-BACK FUNCTIONS. THE ADVANTAGE OF USING A PERSONAL COMPUTER FOR USER INTERACTION TO THE OPERATIONAL PROTOCOL OF THE ANALYZER, IS THAT IT PERMITS THE USER TO MANIPULATE AND MODIFY THE PROGRAM ASPECTS OF THE ANALYZER VIA KEYBOARD ENTRY OF "BASIC" LANGUAGE STATEMENTS.