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Fluke 434/435
Users Manual
11-4
Available function keys:
F2
Pulse count mode on/off.
F3
Switch Energy popup screen off.
F4
Manual pulse count. For description see above.
F5
Reset for Energy screen.
Trend
To access the Power & Energy Trend screen:
g
F4
The figures in the Meter screen are instantaneous values that update constantly. Changes
in these values over time are recorded whenever the measurement is active. All values in
the Meter screen are recorded, but the Trends from each row in the Meter screen are
displayed one at a time. Press function key F1 to assign the arrow keys to row selection.
The traces build up from the right side. The readings in the header correspond to the most
recent measurements plotted on the right.
In addition to TIMED start of energy usage measurement, the Analyzer can measure
average power during an adjustable time window. Electricity suppliers often bill
industrial customers upon the highest average energy usage during a specified time
window. For this demand interval a period of 15 minutes is common.
For any setting besides OFF horizontal scaling of the trend is fixed so that each data point
corresponds with Max, Min, and Average usage during the interval. The demand interval
can be adjusted between 1 ... 60 minutes or to OFF. The adjustment menu is reached via
the SETUP key and function key F3 – FUNCTION PREF. See Chapter 20, FUNCTION
PREFerences. With the demand interval set to OFF the Trend functions as usual with
automatic horizontal scaling.