Edu-Logger 900-234 User manual

Edu-Logger Flow
Logger Sensor Guide
900-234

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Edu-Logger flow logger sensor
900-234
The Edu-Logger flow sensor can be used for any
science experiment or activity which involves a liquid
flow rate such as in the fields of Environmental
Science, Ecology, Earth Science, Biology, Chemistry,
Physics, etc.
The sensor comes pre-calibrated so you can start
experimentation right out of the box using this guide.
Hundreds of possible experimental subjects that can
be done with the 900-234 sensors are: stream velocity
and health, turbidity, density verses flow rate, fluid
pressure and flow relationships, and many more.
The flow sensor uses the following units of measure:
Meters per second (m3/s): The SI unit of
liquid flow rate.
Connecting to the flow sensor:
The flow sensor takes flow measurements of liquids
flowing through the flow probe attachment. There are
a few options for connecting the probe attachment to a
water source:
Connect directly to a faucet using the
threaded inlet and outlet pipes.
Use rubber hosing to connect the inlet and
outlet pipes to the sample being tested.

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Connect the probe to a ruler and submerge
directly into water (river for instance) to take
flow measurements.
Quick start procedure:
PC or Mac Computer
Materials needed:
900-234 Flow Sensor
900-213 USB Module
USB to mini USB cable (included with the 900-
213 module)
Your flow 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 flow 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 flow 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.
5. Once a flow sensor logo appears on the left side
of the screen the probe has been automatically
identified and you can begin experimentation.

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6. If the flow 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 flow 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 flow 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:
900-234 Flow Sensor
900-268 WIFI module
900-215 Battery
Your flow 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.
Procedure:
1. Connect the flow sensor directly to the left side
900-268 (no wires required).

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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.)
12. If the browser does not auto detect the sensor(s),
select “Search for sensors”.

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13. Once the sensor is found you will see an icon on
the left side of the screen for the flow sensor. The
icon will display real time data.
14. Click on the “Module setup” button located on
the flow sensor icon in the module window to
change the flow 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:
900-234 Flow Sensor
900-272 Viewing Module
900-215 Battery
Procedure:
1. Connect the flow 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.
4. Once the sensor appears it will be monitoring
data in real time.

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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:
900-234 Flow 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 flow 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 flow 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.)
4. After the experiment has concluded (when the
“Start/Stop” button is pressed again or the data

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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 900-234 flow sensor)
Restoring sensor’s factory default settings:
Procedure:
1. Connect the 900-213 to a PC, Mac, tablet, or
smart device.
2. Connect the flow 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 900-234 Flow Sensor Guide (this
document).
Flow sensor probe attached directly to the sensor
body by a durable rubber-coated wire.
Sensor specifications
Range and operation modes
0 to 4.7 m/s
ADC resolution
16 bit
Resolution
0.0001 m/s
Max sample rate (S/sec)
100
Sensor features:
Fully digital data.
Rugged plastic ergonomic case.
Flow rate probe attached to the sensor body by a
durable rubber-coated wire.
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 flow sensor houses an internal water wheel, as
liquid flows through the probe the wheel rotates at the
same velocity. The water wheel does not connect
directly to the walls of the sensor, but instead floats on
a bearing to lower the friction of the system which
allows for the water wheel to take the velocity of the
water passing through it more accurately.
The water wheel shaft includes a mgnet and the
rotation is sensed by hall effect sensor without any
mechanical connection.
The flow is calculated by the internal controller that
converts the rotation speed into flow rate.
Maintenance and storage:

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Never submerge the Edu-Logger sensor’s plastic
body in any liquid.
Do not allow liquid into the flow sensor’s body.
After use, gently wipe away any foreign material
from the flow 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!
www.edulab.com
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