Dynalco AF-900PC Air/Fuel Ratio Controller - Manual (Page 46)

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15. Catalytic Converter Delta Temperature
The logic diagram below shows the operation of the catalytic converter differential
temperature measurement function. The pre-cat temperature is subtracted from the
post-cat temperature to obtain delta temperature. The "Filter Time" set on the Post-
Cat Cfg screen is then applied to the delta temperature used for the trips. A trip will
occur if either the Delta Temp High or Delta Temp Low thresholds are exceeded,
provided the start timer shown at the bottom of the diagram has expired.
16. Data Logging
The AF900PC has powerful data logging capabilities through the use of on-board
Flash Memory, providing up to 64 Megabytes of capacity.
Up to 15 parameters can be logged as fast as every 1 second. Additionally,
ALARMS can be chosen for data logging as well as the AF900PC status
(MANUAL, START, AUTO, AUTO).
Using Dynalco’s Windows-based DynaTrend software, the user can transfer the
logged data to a laptop and view or graph the data. Dynalco’s DynaTrend software
can automatically and seamlessly open Excel to view and graph the data. Each
parameter logged is identified with a label and also a time/date stamp. Once the
data has been transferred to a laptop using DynaTrend, the file can be saved and
assigned a file name that can be the engine name/number/date, etc. with Windows
standard long filenames.
AF900PC
Catalytic Delta Temperature