QTFM Gen-2

QTFM Gen-2 sensor head and control electronics

The QuSpin Total-Field Magnetometer (QTFM) is a compact, high-sensitivity hybrid scalar + three-axis vector atomic magnetometer for geophysical applications. It is extremely accurate, stable, and can resolve minute field changes. A compact, low-power package makes it ideal for use in a wide range of applications from magnetic observatories to small, mobile platforms such as UAVs.

Release Notes: link
[Archived Gen-1 webpage: link]

Technical Specifications (Preliminary)

Sensitivity: Scalar: <3 pT/√Hz; Vector: <0.1 nT/√Hz (optional add-on)
Data Rate: 1000 samples/sec (maximum)
Bandwdith: 500 Hz
Deadzone: Axial only, < +/- 7º cone about earth’s field (typical < 5º) (link)
Heading Error: <3 nT uncompensated
Dynamic Range: 1000 nT to 150,000 nT
Operating Temperature: -15 deg. C to 55 deg. C
Size: 36×17.8×11.6 mm (sensor head), 91x20x14.4 mm (electronics)
Weight: 15 g (sensor head + electronics)
Power: 5V to 10V input, 2 W total (sensor + electronics), 3W during startup
Outputs:  UART, USB
Max Gradient Field: 300 nT/cm
Calibration: None
Type: Pulsed laser pumped rubidium free induction decay (link)

Features

  • Optional addon: Integrated, stable, low-noise three-axis vector outputs (synthetic1 )
  • Flat spectral response (no frequency-dependent response roll-off)
  • Built-in customizable digital filters (low-pass, high-pass, notch)
  • Multiple sensors can be precisely synchronized for gradiometry
  • Negligible dead zones
  • No slew rate limitations (can tolerate extremely magnetically noisy environments)
  • Built-in high-resolution frequency counter

1Vector outputs are synthetically derived (calculated) from scalar measurements by applying bias fields in interleaved measurement cycles (link)

Pricing

Qty 1-3: $10,000
Qty 4-7: $8,500
Qty 8+: $8,000
Vector add-on: +$1,500
Please call for pricing for larger volumes or potential OEM applications.

User Guide
3D CAD files
Brochure
Accessories

  1. Triaxial Vector Upgrade
  2. Advanced COMMs board

Technical Support

info@quspin.com

Export Restrictions

QTFM is export controlled by the US Department of Commerce (ECCN: 6A006.a.2). QTFM can be shipped to most European countries, Japan, Australia, and South Korea without a license. Some key countries such as China, India, Russia are excluded and a license from the DOC is required before QTFM can be shipped to these countries.  A license approval can take over 8-12 weeks and requires detailed information on the end-user and end-use application.

A low-performance variant of the QTFM sensor (QTFM-B) with sensitivity worse than 20 pT/√Hz (ECCN: 6A996.a) is now available which can be shipped to nearly all countries without a license. The only operational difference between QTFM and QTFM-B is sensitivity.