DEVELOPMENT OF A RETROFIT IN SITU THREE POINT AUDIT DEVICE FFOR TESTING OF LINEARITY AND CALIBRATION OF COMMERCIALLY AVAILABLE IN-STACK TRANSMISSOMETERS

COMMERCIALLY AVAILABLE IN-STACK TRANSMISSMETERS FOR OPACITY MEASUREMENT PRESENTLY ONLYHAVE THE CAPABILITY OF A ONE POINTDYNAMIC UPSCALE CHECK OR NO DYNAMIC UPSCALE CHECK DURING OPERATION. IN ORDER TO PERFORM NECESSARY MULTI-POINT AUDITSOF LINERARITY CHECKS, THE INSTRUMENT MUST BE REMOVED FROM SERVICE OR AT THE LEAST BE MANUALLY FITTED WITH AN EXTERNAL AUDIT DEVICE. THIS REQUIRES ACCESS TO THE INSTRUMENT OFTEN LOCATED AT EVALUATED STACK HEIGHTS WITH POOR SAFETY PROVISIONS. THUS, ROUTINE AUDITS THAT SHOULD BE PERFORMED ARE OFTEN NOT PERFORMED, WITH THE ACCOMPANYING PRODUCTION OFLOW QUALITY DATA. THIS PROJECT PROPOSES TO DEVELOP A RETROF RETROFIT DYNAMIC AUDIT/CALIBRATION DEVICE THAT WILL FIT MOSTCOMMERCIALLY AVAILABLE TRANSMISSOMETERS CAPABLE OF BEING REMOTELY ACTIVATED TO PRODUCE THREE UP-SCALE POINTS FOR A AUDIT, CALIBRATION, AND DIAGNOSTIC PURPOSES. THE INCREASED EASE AND SAFETY IN PERFORMING THESE AUDITS WILL RESULT IN MORE AND BETTER QUALITY DATA FROM OPACITY MONITORS.