Fundamental questions for power measurement.
These questions will help you to choose the right instrument for electrical power and efficiency measurement.
1.What do i need to measure?
Is the power repetitive ? Is the power stable ? Do i also need to measure cycle by cycle or sub cycle power/transients? PWM? Noisy signal? Wiring?
2.What accuracy do i need?
3.How can i have confidence in specified accuracy?
4.Is there one instrument for all test ?
5.What about cost effectiveness ?
Types of power measuring instruments