NBM-550 is part of the NBM-500 family of instruments. It delivers extremely accurate results for electromagnetic field intensity measurements. NBM-550 handles applications from just a few Hertz through long waves up to high-frequency microwave radiation, using a selection of interchangeable probes for electric and magnetic fields. Field intensities are captured with flat-frequency-response probes or shaped-frequency-response probes, allowing measurement values to be evaluated against an environmental or occupational safety standard. Calibration factors for each probe are stored in the probe itself and are automatically read and taken into account by the measurement unit.