This is a newer meter on the scene. It's purpose is to measure dirty electricity, and it does it in a different way than the Stetzerizer Microsurge Meter. It's still early and we are not aware of any research done with this meter, but the manufacturer and designer do boast of its increased frequency range and sound feature. So we feel this meter shouldn't be overlooked.
This meter does provide readings in millivolts, but we need to learn more about how it arrives at these numbers. It doesn't appear to take into consideration frequency or time very well, so its usefulness for truly measuring the energy being presented by power line EMI (dirty electricity) compared to the Stetzerizer Microsurge Meter is still unclear.
For this reason, we do not recommend this meter as a replacement for the Stetzerizer Microsurge Meter. Please, if you do not yet have a Stetzerizer Microsurge Meter, we would highly recommend getting that first.
This meter has sound, and allows the user to "hear" the dirty electricity on the line. This small feature is fantastic for demonstrating that dirty electricity is real. So, use this as a complement to the Stetzerizer Microsurge Meter when you are demonstrating and explaining dirty electricity for the first time. It may also be useful for testing since it has an increased frequency range - time may show that this feature can be very helpful.
If you are an EMF evangelist, experimenter, or consultant/specialist, this is a wonderful meter to add to your bag. Once again you should always use the Stetzerizer Meter for actual measuring. There are no guidelines for the readings on this power line meter with sound. But the wonderful feature of being able to hear dirty electricity before, and then reduced after the Stetzerizer filters are used has caused us to recommend it for demonstration use.
From the manufacturer:
The Line EMI Meter measures electromagnetic interference in a single-phase AC power line. It plugs into a wall outlet (mains socket) and requires no battery. It immediately displays total line noise in millivolts (range 1999 mV, resolution 1 mV) in the frequency range 10 KHz – 10 MHz (the frequency limits at which sensitivity is ½ of the maximum sensitivity). A speaker plays the sound of the EMI, amplitude demodulated, in order to identify the EMI source (such as an AM or shortwave radio station vs. a motor vs. an electric arc).
SPECIFICATIONS: Power Line Meter Model PLM
|Operating Voltage:||85-130 VAC 50/60 Hz.|
|Voltage Reading:||85-130 VAC; Accuracy +/- 1 VAC|
|Line Noise Range:||1-1999 mVAC (differential)|
|Line Noise Accuracy:|
+/- 5% @ 1MHZ; +5% to -50% @ 10 KHz TO 10MHz.
|Size:||5.2 x 3.6 x 1.6 inches; 132 x 91 x 41 mm|
|Power Cable:||Detachable 2-wire cord (appropriate to country)|