Table 1 HPM performances
Sensors | Content | Performances |
|---|---|---|
FGM | Measurement range | ± 70000 nT |
Linearity | Better than 0.005% | |
Bandwidth | 15 Hz | |
Noise | Lower than 18 \( {\text{pT}}/\sqrt {\text{Hz}} \) @1 Hz | |
Stability | Better than 1 nT/month | |
Offset thermal drift | 0.05 nT/ °C (before correction) | |
Gain thermal drift | 5 ppm/ °C (before correction) | |
CDSM | Measurement range | 1000–100,000 nT |
Accuracy | 0.19 nT (1σ) | |
Noise | Lower than 50 pT @1 s integration time |