Edu-Logger 900-224 User manual

Edu-Logger Magnetic
Logger Sensor Guide
900-224

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Edu-Logger magnetic field logger sensor
900-224
The Edu-Logger magnetic field sensor can be used for
any science experiment or activity which involves
magnetic fields such as in the fields of Physics,
Mechanics, Environmental Science, Earth Science,
etc.
The sensor comes pre-calibrated so you can start
experimentation right out of the box using this guide.
Magnetic fields are areas surrounding a magnetic
force in which all other magnets will be affected.
Generally magnetic fields are focused along two
poles, north and south. Electrical currents create
magnetic fields by traveling in uniform motions about
the magnets poles and thus without an electric current
you cannot have a magnetic field.
Hundreds of possible experimental subjects that can
be done with the 900-224 sensors are: Earth’s
magnetic field, electromagnetic fields, magnetic field

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strength over distance, explore bird migration, explore
energy and forces, circuits, and many more.
The magnetic field sensor uses the following unit of
measure:
Milli Tesla (mT): The SI unit of magnetic
flux density (magnetic field)
Quick start procedure:
PC or Mac Computer
Materials needed:
900-224 Magnetic Field Sensor
900-213 USB Module
USB to mini USB cable (included with the 900-
213 module)
Your magnetic field sensor needs to be connected to a
900-213 module. The 900-213 module then connects
to a computer via a USB to mini-USB cable. Please
note that you cannot plug the magnetic field sensor
directly into the computer.
Resident PC software and browser based application
can be downloaded for free at www.edulab.com
as well as a full software user guide.
Note: Make sure not to download and install both
types of software they will conflict on the computer.
Procedure:
1. Install the Edu-Logger software
2. Connect the 900-213 module to the PC or Mac
3. Connect the magnetic field sensor to the 900-213
module (they directly plug together). Please note
there is no calibration required for this sensor.
4. Open the Edu-Logger software.

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5. Once a magnetic field sensor logo appears on the
left side of the screen the probe has been
automatically identified and you can begin
experimentation.
6. If the magnetic field sensor is not automatically
identified then click the “Search for sensors” icon
to find the sensor.
7. Click on the “On-line experiment” button; this
will open a graph below.
8. Click on the “Module setup” button located on
the magnetic field sensor icon in the module
window to change the sensor settings if need be.
9. Click on the "experiment set up" button to change
the experiment settings if need be (experiment
duration for example).
10. The magnetic field sensor will give a live reading
in the box to the left of the screen while plugged
in.
11. To run an experiment and collect data click “Run
experiment”.
12. To end data collection early, click “Stop
experiment”.
Tablet, smart phone device
Materials needed:
900-224 Magnetic Field Sensor
900-268 WiFi module
900-215 Battery
Your magnetic field sensor needs to be connected to a
900-268 module. The 900-268 module will create a
closed Edu-Logger WiFi network which will stream
the Edu-Logger data to a device of your choosing.
Once your device is wirelessly connected to the Edu-
Logger network you can run experiments and collect
data through a browser of your choosing.

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Procedure:
1. Connect the magnetic field sensor directly to the
left side 900-268 (no wires required).
2. Connect a 900-215 module to the right side of the
900-268 module.
3. Although not required, we recommend plugging
the 900-215 to an outlet using a USB to mini
USB charger (such as a typical cell phone
charger). The 900-268 module will run for 15-75
minutes (depending on the sensor) without being
plugged in.
4. The 900-268 can be powered directly using a
mini to USB cord and plugging it into your
computer or a wall charger. Please note this
function is only available on 900-268 units with
the USB icon on the cover.
5. For further 900-268 instructions or
the 900-268 quick start guide please visit:
www.edulab.com
6. The 900-268 indicator lights will flash; take no
action until the LED to the far left turns blue; this
can take up to one minute.
7. Take your tablet or smart phone, go to the WiFi
settings and select the Edu-Logger network
which matches the 900-268 Module ID found on
the back of the 900-268 device. (Edu-
LoggerXXXX for example).
8. Give your device about 20 seconds to connect to
the 900-268.
9. Once the device is connected, go to your browser
and type the website wifi201.com into the URL
bar, then wait for 30-60 seconds.
10. You will see a “Control mode” icon in the
browser, click on this icon.
11. The browser will then load a new screen and
begin to auto detect the sensor(s); this can take a
minute. (You can stop the search when the sensor
is found.)

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12. If the browser does not auto detect the sensor(s),
select “Search for sensors”.
13. Once the sensor is found you will see an icon on
the left side of the screen for the magnetic field
sensor. The icon will display real time data.
14. Click on the “Module setup” button located on
the magnetic field sensor icon in the module
window to change the magnetic field probe
settings if need be.
15. Click on the experiment set up button to change
the experiment settings if need be (Experiment
duration for example).
16. To run an experiment and collect data, select
“On-Line” experiment, then select "Run".
17. If you have a newer generation 900-268 (with the
USB icon on the cover) this can be used as a 900-
213, meaning you can tether the probes directly
to the computer using the 900-268. To engage
operation in this fashion, press 3 times on the
panel key. Repeating this operation will return
the unit to WiFi mode.
Operation with Edu-Logger viewer
Materials needed:
900-224 Magnetic Field Sensor
900-272 Viewing Module
900-215 Battery
Procedure:
1. Connect the magnetic field sensor to the left side
of the viewer.
2. Connect the 900-215 module to the right side of
the viewer.
3. The 900-272 will auto detect the sensor and you
will see it appear on the left side of the screen.

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4. Once the sensor appears it will be monitoring
data in real time.
5. To run an experiment and collect data click the
run button (little green person).
Off-line experiments
(Off-line experiments are for when you do not have a
sensor connected directly to a computer, tablet,
smartphone, or Edu-Logger viewer).
Materials needed:
900-224 Magnetic Field Sensor
900-215 Battery
Materials needed to configure your offline
experiment:
900-213 Module or 900-268 module or 900-272
Module
USB to mini USB cable (included with the 900-
213 module).
Procedure:
1. Connect the magnetic field sensor directly to the
left side of a charged 900-215 module.
2. When ready to collect data press the “Start/Stop”
button on the magnetic field sensor, a red light
will turn on for the duration of the experiment.
3. To change the experiment settings first connect to
your chosen device (PC, Mac, tablet, smart
device) and select the “Module setup” button.
(For more information on how to change the
experiment settings view quick start procedure
section for your chosen device in this document.)

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4. After the experiment has concluded (when the
“Start/Stop” button is pressed again or the data
collection period ends) connect the sensor to your
chosen device. (full instructions in each device’s
quick start procedure section)
5. Open Edu-Logger software.
6. Click the “Off-line experiment” button.
7. Click the “Load data from sensors” button.
8. Select which experimental data to upload. (5
experimental runs can be stored at one time on
the 900-224 magnetic field sensor)
Restoring sensor’s factory default settings:
Procedure:
1. Connect the 900-213 to a PC, Mac, tablet, or
smart device.
2. Connect the magnetic field sensor to a 900-213
module (they directly plug together). Please note
there is no calibration required for this sensor.
3. Open the Edu-Logger software.
4. Click the “Tools” icon.
5. Click the “Restore sensor’s factory defaults” on
the menu.
6. If prompted to clear the graph, click either the
“Off-line experiment” or “On-line experiment”
(whichever you are using).
7. Click “Clear experiment results”.
8. Resume from step 4.

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Included with sensor:
Edu-Logger 900-224 Magnetic Field Sensor Guide
(this document).
Sensor specifications
Range and
operation modes
±10 mT
ADC resolution
15 bit
Resolution
0.001 mT
Max sample rate
(S/sec)
3000
Sensor features:
Fully digital data.
Rugged plastic ergonomic case.
Push button switch for Start/Stop experiments in
off line mode.
LED indicator of experiment status (blinks while
collecting data).
Pre-calibrated sensing equipment.
Note: Edu-Logger products are intended for
educational use.

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Videos and experiment examples:
Videos, literature and other probes can be found
at www.edulab.com
Technical background:
The philosophy behind Edu-Logger’s plug and play
technology is based on each sensor’s ability to store its
own data due to an internal flash memory chip and
micro-controller in each plastic Edu-Logger body.
This technology allows the sensor to collect and then
store the digital data in the correct scientific units (oC,
oF, Lux, %, ppm, for example).
The sensor is pre-calibrated at the factory. The built-in
software in the logger can be upgraded at any time
using software.
The magnetic field sensor utilizes the Hall Effect to
generate a voltage relative to the magnetic field. The
Hall Effect is a natural phenomenon where a magnetic
field exerts a force on charge carriers if an electrical
current flows through the magnetic field. The charge
differential is measured and can easily be converted
into a magnetic field strength because of the direct
relationship.
The sensor itself is located behind the hole in front of
the sensor box.
Maintenance and storage:

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Never submerge the Edu-Logger plastic body in
any liquid.
Do not allow liquid into the magnetic field
sensor’s body.
After use, gently wipe away any foreign material
from the magnetic field sensor.
Store in a box at room temperature out of direct
sunlight.
Warranty:
We promise to deliver our sensor free of defects in
materials and workmanship for a period of 3 years
from the date of purchase. Our warranty does not
cover damage of the product caused by improper use,
abuse, or incorrect storage. Sensors with a shelf life
such as ion selective proves have a warranty of 1 year.
Should you need to act upon the warranty please
contact your distributor. Your sensor will be repaired
or replaced.

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Thank you for using Edu-Logger!
Flexible, simple, fast, forward thinking.
W: www.edulab.com
E: [email protected]m
V10012013