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This sensor will show you the mysteries of magnetism. Measures upto 15 Oersted (which is 15 Gauss, if measuring in air). Comes with a couple of those super strong neodymium magnets. See this videoclip
for a demo !
Application examples
- Measure proximity of magnetic objects.
- Attach to doors and detect when they are (almost) closed.
- Measure the strength of the earth's magnetic field.
Technical specifications
Product |
Magnetic sensor |
Version |
2.1 (November 2009) |
Sensing parameter |
magnetic field strength |
Sensing method |
Hall effect |
Range |
0 to 15 Oersted, linear between 1.5 and 10.5 Oersted, saturation at 15 Oersted (1 Oersted = 1 Gauss, in air) |
Non-linearity |
2 % minimum |
Hysteresis |
4 % minimum |
Bandwidth |
0 - 1 MHz |
Power supply |
3 to 5.25 V DC, 3.6 mA at 5 V DC |
Operating temperature |
-50 to 125 °C (-22 to 257 °F) |
Sensor dimensions |
30.0 x 10.0 x 4.50 (1.18 x 0.394 x 0.177 inch) |
Weight |
11 g (0.39 oz), incl. cable |
Cable |
1.0 m (39 inch), shielded, red wire = power, black wire = ground, white wire = sensor output, maximum extension 30 m (98 ft) |
Connector |
male plug with 3 pins in a row spaced 2.54 mm (0.100 inch) |
Included magnets |
Neodymium magnet 10,800 Gauss, 6.4 mm (0.25 inch) diameter x 1.6 mm (0.063 inch) thick; larger neodymium magnets |
Calibration with included 10,800 Gauss magnet (approach sensor's center with magnet's center without any material in between, and see application notes below) |
cm |
inch |
gauss |
Voltage (use 5 V power supply) |
7-bit MIDI value (use 'no processing' editor preset) |
0 |
0 |
2.4x103 |
5 |
127 |
1.7 |
0.66 |
15 |
5 |
127 |
2.0 |
0.79 |
9.3 |
0.71 |
18 |
3.0 |
1.2 |
2.8 |
0.33 |
8 |
4.0 |
1.6 |
1.2 |
0.27 |
7 |
5.0 |
2.0 |
0.63 |
0.25 |
6 |
Application notes |
The earth's magnetic field has to be taken into account when measuring the field strength of magnets, since the strength of the earth's magnetic field at the earth's surface ranges from less than 30 microteslas (0.3 gauss) in an area including most of South America and South Africa to over 60 microteslas (0.6 gauss) around the magnetic poles in northern Canada and south of Australia, and in part of Siberia. The calibration table above includes the earth's magnetic field as measured in Montreal, Canada. |
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