Trifield® Line EMI Meter
Dirty Electricity Power Line Meter
The Line EMI Meter EM100 measures electromagnetic interference in a single-phase AC power line. It plugs into a wall outlet (mains socket), requires no battery, and immediately displays total line noise in millivolts peak to peak (range 1999.9 mVp-p, resolution 0.1 mVp-p) in the frequency range 10 KHz – 10 MHz (the frequency limits at which sensitivity is ½ of the maximum sensitivity).
An internal speaker allows you to hear much of the EMI which can be useful in identifying the source. This is done through amplitude demodulation; but very high frequency noise can be present and inaudible due to being outside of the audio range. AM or shortwave radio stations can often be picked up directly on the line and the broadcasts can be heard through the speaker, as well as the whine from electric motors, static bursts that represent transient noise, and the modulated patterns from Switch Mode Power Supplies (SMPS). SMPS are found in computers, TVs, phone chargers, ect.
Power generation equipment (such as solar inverters) can also often be a source of line noise.
Features:
- Easy to operate, simply plug in the meter to each outlet you wish to test throughout your home and record your results
- LCD digital display will indicate the sum total field strength of all sources within its frequency range in mVpp (milliVolts Peak-to-Peak) as well as the line voltage at 60 Hz as a secondary measurement
- Audible amplitude demodulated tone of the measured Electromagnetic Interference (EMI)
- Includes a yellow status bar at the top of the display to help determine the severity of the EMI being detected
- Wide frequency detection range of 10 KHz to 10 MHz
- Dimensions: 5.2 x 3.6 x 1.6 inches; 132 x 91 x 41 mm
- Powered by plugging into a standard wall outlet, no battery required!
Additional Features:
- Audible Tone: Audio assessment - internal speaker plays the sound of the EMI, amplitude demodulated, in order to help identify the EMI source
- LCD Display: Easy to read 3.5 digit display
- Power Supply: North American Power Cord Included - no battery required
- Line Noise: Total line noise value displayed in milliVolts Peak-to-Peak (mVpp)
- Line Voltage: Value displayed in AC Voltage (VAC) at 60 Hz
Includes:
- Line EMI Meter
- 1 Year Manufacturer Defect Warranty
- Optional HS2 Meter Case
Operating Voltage: 85 - 300 VAC 50/60 Hz
Refresh Rate: @ 4x/sec
Line Noise Range: 0.1 - 1999.0 mV Peak-to-Peak
Noise Read Accuracy: +/-8% from 20kHz to 2MHz (within a factor of two from 10kHz to 10MHz)
Size: 5.2 x 3.6 x 1.6 inches; 132 x 91 x 41 millimeters
Weight: 8 ounces; 227 grams
Power Cable: Detachable 2-wire cord (North America), Power Adapter Included
