RM3100 Magnetometer Sensor Kit

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RM3100 is a performance-benchmark 3-axis magnetometer sensor kit designed for accurate magnetic field measurement and reliable heading/orientation (compass) calculations. It delivers ~10× the resolution of Hall sensors with <1/20 the noise, plus high sampling rate, strong interference recognition, and stable performance in complex magnetic environments.

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Description

Product Overview

RM3100 magnetometer sensor is a performance benchmark in its class. It accurately measures magnetic fields to enable highly precise heading and orientation calculations for navigation and motion-control systems.

Product Details

The RM3100 magnetic sensor kit consists of:

  • 2 × X/Y-axis magnetic sensors (Sen-XY-f, 13104)
  • 1 × Z-axis magnetic sensor (Sen-Z-f, 13101)
  • 1 × ASIC controller (MagI2C)

RM3100 delivers outstanding performance—approximately 10× the resolution of Hall sensors and less than 1/20 the noise. This ensures excellent accuracy for heading and orientation measurement.

Based on PNI’s patented magneto-inductive sensing technology, RM3100 provides ultra-low noise, high resolution, and high repeatability even in challenging environments. It also features a high sampling rate, no hysteresis, and does not require temperature calibration.

In real-world geomagnetic measurement, nearby components (batteries, housings, motors) can distort the local magnetic field. Temporary magnetic disturbances—such as furniture, passing vehicles, smartphones, and computers—can also affect heading accuracy. RM3100 is designed to identify and distinguish environmental noise/interference from true magnetic changes, reducing measurement deviation and enabling more reliable direction judgment.

Key Advantages

  • High-performance measurement for reliable heading and orientation
  • Patented sensing technology: ultra-low noise, high resolution, excellent repeatability
  • High dynamic response: high sampling rate for dynamic measurement scenarios
  • Strong anti-interference capability: can distinguish magnetic disturbances in the environment
  • Stable in complex environments: maintains consistent performance with external/temporary magnetic changes

Specifications

Parameter Cycle Counts = 50 Cycle Counts = 100 Cycle Counts = 200 Unit
Range -800 to +800 -800 to +800 -800 to +800 µT
Gain 20 38 75 LSB/µT
Sensitivity 50 26 13 nT
Noise 30 20 15 nT
Noise Density 1.2 nT/Hz
Repeatability (over ±200 µT) 15 8 8 nT
Hysteresis (over ±200 µT) 15 nT
Linearity (over ±200 µT) 0.5 %
Max Single-Axis Sample Rate 1600 850 440 Hz
Avg Current (Single Axis) 70 150 260 µA
Bias Resistor 121 (not specified)
Operating Temperature -40 to +85 °C

Applications

  • Drone flight control (UAV compass)
  • Inertial navigation modules
  • Handheld devices / PDA
  • Video game controllers
  • Camera stabilization systems
  • Robotics
  • Automotive rear-view mirrors
  • Patrol vehicle navigation systems
  • AGV magnetic tape navigation

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