Capability demo · 6DOTS / NextMAG

Reading conductor current from its field

Simulated data

Pick a target — a station battery, an HVDC pole, or a storm-driven neutral. A passive 1 Hz magnetometer's view is simulated (a modeled Biot-Savart field plus real sensor noise), and the real analyzer recovers the current from it. The physics and the analyzer are real; the field is simulated.

Target

Shipped

A unit a few centimetres from one pole of a 125 VDC station battery reads its DC current — the shipped Battery Watch capability. Here it's simulated; in the field app the amps are on-site calibrated estimates, not yet clamp-validated at operating currents.

Field at the unit|B| over ~2 min · float current steps up to charge, then back

|B|, nT (linear)steady hold

Injected vs recoveredBiot–Savart · B = μ₀I / 2πr

Set current

2 A

injected

Modeled ΔB

4,000 nT

Biot–Savart

Recovered ΔB

4,001 nT

analyzer, from noise

Recovery

100%

1.00× of model

The analyzer pulled a 4,001 nT step from the noisy trace when 2 A switched on — matching the 4,000 nT the Biot-Savart model predicts at 10 cm, to within the noise floor. That's the pipeline recovering a modeled field end to end — analyzer recovery on simulated data, not a field measurement. Validating the nT/A against a real cable is the Orbyfy pilot.

Try it

Standoff

Float / charge current

Closer standoff and higher current make a bigger field step; far and small drops it into the noise — the real trade a crew places a unit against.

The honest envelope

This target. Station battery: the + and − poles run apart, so the near pole dominates — a clean single-conductor read. In the real product the amps are calibrated estimates (clamp-validation pending).
DC / quasi-DC only. At ~1 Hz this can't see 50/60 Hz AC load or harmonics, and a balanced 3-phase bundle cancels at distance. What ships today is battery-bank field sensing; HVDC is modeled and GIC isn't field-validated — honest, pending the Orbyfy pilot.
Current, not power. The field tracks amps and standoff (B = μ₀I/2πr), never voltage.
Simulated data. A ~1× recovery shows the analyzer inverting its own modeled field through noise — the pipeline, not a field measurement. No HVDC or GIC cable has been field-validated.

How you'd run it

NextMAG is data-as-a-service on passive magnetometer hardware: deploy units beside your conductors, sign in, and the readings and analysis come to you — no truck roll to read a meter, no cut cable to clamp.

Live and recorded readings need a unit and an account; this demo needs neither.

Noise floor ~6 nT (RM3100 at 1 Hz) · ambient field 50,000 nT · 120 simulated samples