Reference only — this item is no longer available.
This product has been discontinued and cannot be ordered. We keep the page online so the specifications and documentation stay available to anyone still running the equipment. Current replacements are listed further down.
Discontinued
Product details (archived)
The information below is retained for reference only. This item is discontinued and cannot be ordered.
EMF Meter Digital True-RMS 3-Axis Gauss meter (DSP523) 60Hz Filter
The DSP-523 uses a powerful digital signal processor that sets a new standard for AC gaussmeters. Now you can ignore powerlines, bandpass powerlines and analyze powerline harmonics, all with one simple meter.
The first line shows you the total, unfiltered field strength. The second line shows the field strength with one of four digital filters selected:
- Ignore 60Hz + Harmonics
- Ignore 60Hz Only
- Bandpass 60Hz + Harmonics
- Bandpass 60Hz Only
Selectable axis, graphing, max hold, and a variable backlight are just icing on the cake.
No other gaussmeter has the ability to accurately notch or bandpass powerline fields and harmonics while still passing other frequencies. Easy to use, and innovative
50 Hz European Fields: Need to use the meter in Europe where power line are 50Hz instead of 60Hz? No problem, you can switch between 50Hz and 60Hz filtering in the menu.
BARGRAPH DISPLAY:
- Accuracy: ±(4% + 4 digits) from 48 to 62 Hertz
- Flat frequency response:
- ±½dB 30 to 300 Hz
- -3dB 15 to 330 Hz
- Range 0-250 mG (auto-ranging)
- Highest resolution: 0.01 mG
- True RMS Measurements
- Three Axis Detector, selectable (3-Axis, X, Y, Z)
- Two display styles:
- On-Screen Graphing of total RMS, Notched and Bandpassed field strength
- Dual readout: Compare total RMS strength plus select:
IGNORE 60Hz Only or 60Hz+Harmonics
BANDPASS 60Hz Only or 60Hz+Harmonics
- Blue LED Backlight, variable brightness
- Max Hold on ALL features
- Update Rate: 1.6 times per second
- Selectable units: milliGauss or microTesla
- Runs on one 9V Alkaline battery (included)
- External power jack to run unit with optional AC power adapter
- Weight (without battery): 7.2 oz
- Dimensions: 5.5" x 3.6" x 1.75"
- 1 Year Warranty
- Made in the USA

Applications:
- Powerline Field Measurements
- Powerline Quality and Total Harmonic Distortion (THD) analysis
- Measurement of DC or combustion motor electromagnetic fields
- Measurement of automobile electromagnetic fields
- Appliance Measurements
- Lab Testing & Calibration
- Testing Stetzerizer/harmonic noise filters
- Download Instruction Manual (PDF format)
- Download Accuracy Test Results (PDF format)
- Download 50Hz and 60Hz Filtering Test Results (PDF format)