This page documents a previous-generation product, retained for reference. For current products see QTFM Gen‑2. The later Gen‑1 specifications are archived on the QTFM (Gen‑1) page.
Overview
The QuSpin Total‑Field Magnetometer (QTFM) is a compact, high-sensitivity scalar magnetometer. It can operate in Earth’s field, is extremely accurate and can resolve very minute field changes. Our sensor is among the highest performing in the world. A compact, low-power package makes it ideal for use in a wide range of existing and emerging applications such as in magnetic observatories and aboard small, mobile platforms.
→ Compact, low-power, easy to use, extremely accurate.
Technical Specifications
| Field Sensitivity | 2 pT/√Hz in 0.1–100 Hz band |
| Deadzone | Single equatorial plane, ± 7 deg |
| Heading error | Below 3 nT (uncompensated) |
| Dynamic Range | 1000 nT to 100000 nT |
| Power | 5 V to 19 V, 2 W total (sensor + electronics), 3 W during startup |
| Operating temperature range | −30 °C to +60 °C |
| Calibration | None required |
| Outputs | UART, USB |
| Dimensions | 19 × 19 × 47 mm (sensor) |
| Weight | 18 g (sensor) |
| Atomic species | Rubidium |
Key Applications
Geophysics, space, mineral and energy prospecting, unexploded ordnance detection, research
Magnetic power spectral density measured with two QTFMs placed outdoors
