Vernier Software and Technology
Vernier Software & Technology
Tech Info Library

Go Direct 3-Axis Magnetic Field Sensor Troubleshooting and FAQs

Go Direct® 3-Axis Magnetic Field Sensor, order code GDX-3MG, $69
Specifications and User Guide

- Primary Test: Press the power button on the sensor to turn it on. (The red LED will flash.) Start the Graphical Analysis app on your device and select the sensor from the list of available sensors. (The green LED will flash to indicate the sensor is connected.) Move the sensor near a permanent magnet and check for the magnetic field readings to change.

TIL 3943: When I hold the tip of the Go Direct 3-Axis Magnetic Field sensor next to the pole of a magnet, the sensor reads zero
TIL 3925: Is the Go Direct 3-axis Magnetic Field Sensor submersible?
TIL 4388: How do you calibrate the GDX-3MG sensor?

-Magnetic field range: ± 5 mT (high precision) and ± 130 mT (low precision)
-Resolution: 0.0002 mT (high precision) and 0.1 mT (low precision)
-Maximum wireless range: 30 m, unobstructed

Sensor Dimensions
-Overall length (handle + shaft): 19.5 cm
-Shaft: length 12.2 cm, cross section is square with slight taper. Maximum cross section is square, 9 mm x 9 mm closest to the handle.
-Handle dimensions: length 7.3 cm, maximum width 3.3 cm

Go Direct 3-Axis Magnetic Field uses Bluetooth low energy technology and can only be used wirelessly with devices that support Bluetooth low energy technology running the appropriate software. Otherwise, connect the sensor to your device using the included USB cable.

This sensor requires Graphical Analysis 4 software on iOS, Android, Chrome, Windows, or macOS.

-Calibrate? No. The sensor is set to the stored calibration before shipping.
-It is not practical to calibrate the Magnetic Field Sensor without reference to a known source of magnetic field. It is useful, however, to zero the Magnetic Field Sensor. Position the sensor, and zero it using the data-collection software. Then, move the magnetic field source (but not the sensor) to explore the spatial variations of the field.

-Micro USB Cable, order code CB-USB-MICRO, $5
-Micro USB to USB-C Cable, order code CB-USB-C-MICRO, $9

-Magnetic Field Sensor, order code MG-BTA, $58
-Go Wireless® Charging Station, order code GW-CRG

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