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DM Series

Product catalog summary

System Overview
The DM Series Digital Magnetometers utilize STL's advanced high-resolution ADC technology, offering 32-bit resolution and a 26-bit dynamic range. These magnetometers employ fluxgates as magnetic sensors and integrate DXS for enhanced performance. They provide a measurement range up to 1 mT and feature precise digitization immediately after sensor output. The devices measure three orthogonal field components with a maximum sample rate of 10 kHz, maintaining low intrinsic noise levels. The system includes digital signal processing to correct geometry and temperature errors, offering a virtual channel for total field measurement. Temperature is measured and used to correct scaling and offset drifts.

Highlights of the DM Series

Low noise, large dynamic range, and high linearity.
Digital temperature compensation to minimize drifts.
Digitally corrected sensor output for scaling, offset, orthogonality, and alignment errors.
Single coaxial cable for power and data transmission with minimal magnetic signature.
Applicable in various fields such as geophysical, naval, military, and scientific research.

Technical Data for Type "DM-005"

Channels: 3
Dimensions: Diameter 25 mm, Length 200 mm
Weight: 1.2 kg
Noise and Resolution: Varies with Bmax, e.g., ±70 µT with noise < 7 pT/√Hz and resolution 0.1 pT
Sample Rate: 0.1 Hz to 10 kHz
Digital Filter: 0 dB @ DC to fs/3, < -120 dB @ ≤ fs/2
Max Bandwidth: 3 kHz
Offset Error: < 5 nT at 25°C
Offset Drift: < 0.5 nT/°C at 25°C
Scaling Error: < 0.05% at 25°C
Scaling Drift: < 20 ppm/°C at 25°C
Orthogonality Error: < 0.01°
Isogeometric Error: < 14 mm
Housing Alignment Error: Longitudinal axis < 1°
Power Consumption: < 3 W
Protection Degree: IP65, IP68 on request
Temperature Range: -5° to 50°C
Optional Equipment: Tilt sensor for compass, underwater case

Illustrations and Figures
Includes a component scheme and image of DM-005 with coaxial cable.

Catalog excerpts

CONTENT System Overview Highlights Technical Data Illustrations and Figures

Open the catalog to page 1

System Overview The Digital Magnetometers of the DM Series is based on STL’s unrivalled high resolution ADC technology with 32 bit resolution and 26 bit dynamic range. The magnetometers use fluxgates as their magnetic sensitive elements and have integrated DXS. As a result of consequent digital signal processing, our magnetometers are quasi ideal sensors with digitally corrected geometry and temperature errors. The DM Series provides a measurement range of up to 1 mT, with an ultra precise digitization taking place immediately after the sensor output. All magnetometers measure the 3 orthogonal...

Open the catalog to page 2

Technical Data Type „DM-005“ Number of Channels Noise (pT/√Hz) Sample rate Digital filter Orthogonality error Isogeometric error Housing alignment error Power consumption - IP65, IP68 on request - Underwater tight, depth on request Temperature range Optional equipment - Tilt sensor for compass with self alignment - Underwater case

Open the catalog to page 3