MagNIMBUS gradiometer add-on (second QuSpin QTFM Gen-2 sensor)
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This is the additional MagNIMBUS magnetometer payload for gradiometer configuration: a mast with a second QuSpin QTFM Gen-2 sensor that turns a single-sensor MagNIMBUS into a vertical gradiometer. It is for survey teams using the MagNIMBUS drone magnetometer. HobiTech supplies it in India as an Official Partner of SPH Engineering.
Gradiometer configuration
| Sensor | QuSpin QTFM Gen-2 |
| Sensor technology | Laser-pumped rubidium total field |
| Number of sensors | 2 (vertical gradiometer); 1 in standard configuration |
| Design | Foldable mount plus upper mast |
| Sampling rate | User configurable, up to 500 Hz in scalar mode |
| Dynamic range | 1,000 to 150,000 nT |
Weight
| MagNIMBUS, gradiometer | 1.2 kg (0.7 kg standard) |
| Shipping weight, gradiometer | 7.7 kg (7.2 kg standard) |
What is the MagNIMBUS gradiometer add-on used for?
MagNIMBUS comes in two configurations. The standard one has a single sensor on a foldable mount. The gradiometer adds a mast with a second QuSpin QTFM Gen-2 sensor above it.
SPH Engineering lists these benefits of the gradiometer configuration:
- It simplifies data processing.
- It makes a magnetometer base station unnecessary.
- It allows magnetic surveys near sources of electromagnetic fields, such as power lines and railroads.
Detection capability is the same in both configurations. The single-sensor setup needs more experienced specialists for data processing, and a base station is recommended in some cases. SPH Engineering processes vertical gradiometer data in Geosoft Oasis montaj.
What you need
- A MagNIMBUS magnetometer — this add-on is the second sensor, not a complete system.
- The SkyHub onboard computer, which logs the magnetic sensor data and runs terrain following on DJI drones.
- A laser or radar altimeter.
- UgCS Expert flight planning software.
- A supported drone: DJI M400, DJI M350 RTK, DJI M300 RTK, Inspired Flight IF800 or IF1200A, or similar.
Why buy the MagNIMBUS gradiometer add-on from HobiTech?
HobiTech is an Official Partner of SPH Engineering based in Bengaluru, India. Every order comes with a GST invoice, and our local team supports the sensor, the drone and the software.
Frequently Asked Questions
Does the gradiometer detect smaller targets than a single sensor?
No. SPH Engineering states that detection capability is the same as the single-sensor setup. The gradiometer makes data processing simpler and removes the need for a base station.
Can I fly the gradiometer near power lines?
Yes. SPH Engineering states that the gradiometer configuration allows surveys close to sources of electromagnetic fields such as power lines and railroads.
How much weight does the gradiometer add?
MagNIMBUS weighs 1.2 kg in gradiometer configuration, against 0.7 kg for the standard single-sensor version.
How do I buy the MagNIMBUS gradiometer add-on in India?
Use Request a quote on this page, or call HobiTech on +91 70225 26509. We confirm the price and configuration, and every order comes with a GST invoice.
For survey skills, see our magnetometer training.