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Low Field NV Magnetometer

WAINMAG-LF is a highly sensitive, vector and compact magnetometer. It can measure both static and rapidly oscillating magnetic fields, making it an ideal candidate for non-destructive testing of metal parts.

the Low Field NV Magnetometer for NDT

The WAINMAG-LF consists of a fibre optic point magnetometer, of milimetre size for easy integration, and a control unit.

The magnetic field measurement is performed by optical detection of the electron spin resonance of the nitrogen gap centre (NV).

To do this, the diamond is illuminated with a green laser, and the photoluminescence of the diamond NV centres under microwave (MW) excitation is collected and analysed.

This allows a direct vector measurement of the magnetic field in the sensor reference frame.

As the magnetic field measurement is very fast, the WAINMAG-LF can be used in an eddy current detection scheme as well as to locate static leakage fields of a defect in a material.




Very high sensitivity, combined with high measurement resolution


Equivalent efficiency for measuring static and oscillating fields


Direct, vector and quantitative magnetic field measurement


Excellent stability due to rejection of thermal fluctuations


Easy integration due to the small size of the remote sensor


Can be operated at high or low temperatures or under pressure

Magnetic field dynamics

0 to 1 mT


3 nT / √Hz


DC to 300 Hz

Sensor dimensions

Millimetric (customisable)

Distance between sensor and control unit

5m (more on request)

Voltage / frequency (mains)

230V / 50Hz

Power consumption

< 20W

Nominal operating temperature

20°C +/- 5°C*

Max. storage temperature

From -20°C to 55°C, humidity <65%*

*Note : The WAINMAG-LF technology can operate in harsh environmental conditions, including higher and lower temperatures. Please contact us for specific requirements.

This equipment is intended
for the following
application fields

Do not hesitate to contact us if you need any further information

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