Dynalco Catalyst Monitor User Manual

Page 19

The 2

report named “CatalystDataLogEPAInstant” contains the instantaneous catalyst inlet

temperatures taken at 15 minute intervals.

Note that the input channel configured to monitor the
inlet temperature must also be configured as the “EPA
Enabled” channel (see page 14).

There are (4) different events that are assigned to the
EPA enabled channel; events 21, 22, 23 & 24.

The (4) temperature values in each event ID are then
used to calculate one-hour averages. Note that in some
cases, an engine may be stopped before a full hour of
data is collected. In this case, if there are at least (2)
logged values, a 1-hour average will be calculated, per
the EPA ruling.

Finally, the (4) consecutive one-hour averages are used
to calculate the EPA 4-hour rolling average.

All values (instantaneous and averaged) will be seen in
the 3

report described next.

The 3

report named “CatalystDataLogEPAHourly” contains the same instantaneous values

logged above plus the hourly averages and finally the four hour averages.