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The standard ammeters and digital power meters have been phased out, and replaced by the Olson Electronics Deluxe Power Meter that has all of the advantages of both the ammeter and of the original power meter.

Deluxe Power Meter

It has all the advantages of the previous ammeter (accuracy, brighter display, continuously display amps, all the advantages of the standard power meter (scroll through the critical power measurements and measure true RMS) and in addition it can continuously display any of the other parameters

If you previously ordered any Olson product with an ammeter with a product code starting *AM* it will be supplied as a *PM* with the deluxe power meter.

• Monitor Amps, volts, watts and P.F. (all True RMS)
• The ability to either automatically scroll through the four values or to select the parameter to be displayed by the 4x LED’s to easily identify what parameter is being measured
• To manually scroll through the 
• Accuracy 1% amps, volts, 2% Watts, 3% P.F. All true RMS

Ammeter - Discontinued

All part numbers using the ammeter started with the letters AM... are directly replaced by the same part but starting PM

If an AM part is ordered, they will be supplied  with the deluxe power meter.

• Accuracy 0.15% +/-3 counts (which equates to approximately 1% at 32A) based on rectified RMS with sinusoidal waveform
• The meter is not true RMS

Digital Power Meter - Discontinued

If a PM part is ordered, they will be supplied  with the deluxe power meter.

• Each value is displayed for approximately four seconds before it automatically displays the next value
• The arrow that lines up with the decimal point indicates which value is being displayed. On the above animated display the values are:
  0.98 Power Factor (98%)
  8.57 Amps
  241.8 Volts
  2046 Watts
• Accuracy 2% amps, 3% volts, 
  5% Watts, not given for P.F. All true RMS

What is Power Factor?

• Any equipment with a reactive load (ie capacitive or inductive) such as PC power supplies, telecommunication equipment etc, has some energy storage resulting in a time difference between the current and voltage waveforms.
• This stored energy returns to the mains source and is not available to do work at the load.
• The apparent power is volts x amps and is measured in VA or KVA.
• The real power of the load is volts x amps x power factor
• Therefore power factor is a value between 1 and 0 (or 100% and 0%) that shows the ratio between apparent power and actual power
• Purely resistive loads have a power factor of 1.0 and use 100% of the power
• A typical value for a modern power supply used in a PC or telecommunication equipment is somewhere between 0.9 and 0.7
• Any value less than 1.0 means you are paying for electrical power you are not using.
• In some buildings, there is power factor correction equipment fitted at the mains distribution cabinet. In this instance, equipment with a poor power factor is not such a problem.

Contact Olson Electronics for price and availability on all products. Olson Electronics reserve the right to change the specification on any product without prior notice. E&OE.

Copyright © Olson Electronics Ltd.    Last update  21 November 2011