Record Display for the EPA National Library Catalog


Main Title Automation of the Resistivity Measurement for Fly Ash.
Author Nolen, S. L. ; Ramsey, G. H. ; Elliott, D. E. ;
CORP Author Acurex Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Year Published 1988
Report Number EPA-68-02-3988; EPA/600/D-88-131;
Stock Number PB88-220694
Additional Subjects Air pollution control equipment ; Fly ash ; Automation ; Particulate sampling ; Stationary sources ; Computer applications ; Electrical resistivity
Library Call Number Additional Info Location Last
NTIS  PB88-220694 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13p
The article describes the automation of the resistivity measurement for fly ash. Fly ash resistivity is an important consideration in the operation of particulate control devices based on electrostatic principles (the higher the resistivity of the fly ash, the more difficult it is to collect). Because of the need for characterization of fly ash resistivity and the large amount of time required to conduct the manual test, it was decided to automate the test. A standard (STD) bus computer was used in the automated test to monitor the temperature, collect current readings, and transfer the data to a personal computer. The personal computer was programmed to calculate and plot the results from the data received from the STD computer. The automated system tracks the manual system closely. It also consistently produces smoother curves and is very precise for duplicate runs. Most importantly, operator time for the test was reduced from about 6.5 hours per test to about 1 hour, thereby improving productivity.