Measurement Display - P3 International P4460 Operation Manual

Power meter

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Table Of Contents

Table of Contents

ance since the last reset. This cost is calculated based on the total consumed

power in KWH and the utility rate that you have set.

3. Don't be surprised if the total cost display is 0.00 initially. It will take some time

to accumulate cost.

4. Pressing the UP and DOWN key will cycle through the cost projection periods.

"Hour", "Day", "Week", "Month", and "Year" will display on the LCD to indicate

the selected period. The numeric display will indicate the projected cost to

run the attached appliance for the selected period. For example if the display

indicates $2.34 and "Month", the unit is projecting that the attached appliance

will consume $2.34 worth of electricity at the programmed rate in one month.

5. These projections are based on real time and historical measurements of ac-

tual consumption of the attached appliance. The longer the appliance remains

attached to the unit, the more accurate the projection will be. This is especially

true for appliances that cycle on and off. Examples include refrigerators, televi-

sions, etc. Measurements conducted over long periods will accurately reflect

true usage of the appliance. For example if a television is used 4 hours a day,

it is important to measure the 20 hours a day the appliance is not in use to get

a true projection of the cost.

6. For an appliance that cycles on and off, the projections cannot be accurate un-

til the unit has measured some full on and off cycles. Otherwise the projection

will be skewed. For example, if a connected television is powered on and you

reset the Kill A Watt™ EZ, the unit will begin measuring the power consump-

tion of a powered television. The only data available to the unit is power

consumption when the television is turned on. Initial projections of cost will

be high as the unit has not had the opportunity to measure power consump-

tion during the off cycle. If you observe the cost projection while the television

is turned off, you will see it decline over time. After the unit has been able to

measure several typical use cycles, the cost projections will settle to an ac-

curate projection based on real usage.

7. For a device that is never turned off (e.g. a computer server) the cost projec-

tions will take less time to settle. You can observe accurate cost projections

within minutes. It is still best to let the unit measure power consumption over

an extended period. There can be power consumption variations even in

devices that are never turned off.