Edu-Logger 900-210 User manual

Edu-Logger Pressure
Logger Sensor Guide
900-210
Edu-Logger pressure logger sensor
900-210

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The Edu-Logger pressure sensor can be used for any
science experiment or activity which requires an
accurate pressure measurement such as in the fields of
Physics, Biology, Physiology, Microbiology, Botany,
Weather Science, etc.
The sensor comes pre-calibrated so you can start
experimentation right out of the box using this guide.
Both the pressure and barometer sensors measure
pressure however the pressure sensor is much easier to
connect to lab ware such as syringes, beakers, and test
tubes whereas the barometer sensor is ideal for testing
atmospheric pressure in the open or in large
containers. A hose with an attachment piece come
connected to the sensor to make connections to
various mediums easier.
Hundreds of possible experiments that can be done
with the 900-210 sensors are: Boyle’s Law, Gay-
Lussac’s Law for ideal gases, weather phenomena,
yeast and microbe fermentation, small animal exercise
physiology, chemical reactions, and many more.
The pressure sensor is capable of measuring in four
different units of measure:
Kilopascal (kPa): The SI unit of pressure.
Atmospheres (atm): A pressure unit equal to
one earth atmosphere at sea level (101.325
kPa)
Pounds per square inch (psi): The unit of
pressure which measures the amount of force
(in pounds) a gas or liquid exerts across one
square inch
Bar: A non-SI unit equal to exactly 100 kPa

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Quick start procedure:
PC or Mac Computer
Materials needed:
900-210 Pressure Sensor
900-213 USB Module
USB to mini USB cable (included with the 900-
213 module)
Your pressure 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 pressure 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 pressure 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 pressure sensor logo appears on the left
side of the screen, the probe has been
automatically identified and you can begin
experimentation.
6. If the pressure sensor is not automatically
identified then click the “Search for sensors” icon
to find the sensor.

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7. Click the “On-line experiment” button; this will
open a graph below.
8. Click on the “Module setup” button located on
the pressure 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 pressure 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:
900-210 Pressure Sensor
900-268 WiFi module
900-215 Battery
Your pressure 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 pressure sensor directly to the left
side of a 900-268 module (no wires required).
2. Connect a 900-215 module to the right side of the
900-268 module.

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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”.
13. Once the sensor is found you will see an icon on
the left side of the screen for the temperature
sensor. The icon will display real time data.
14. Click on the “Module setup” button located on
the temperature sensor icon in the module

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window to change the temperature 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:
900-210 Pressure Sensor
900-272 Viewing Module
900-215 Battery
Procedure:
1. Connect the pressure 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.
5. To run an experiment and collect data click the
run button (little green person).
Off-line experiments

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(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:
900-210 Pressure 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 pressure 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 pressure sensor; a red light will turn
on for the duration of the experiment.
3. To change the experiment's 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
experiment settings view the 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
collection period ends) connect the sensor to your
chosen device (you can find full instructions in
each device’s quick start procedure section).
5. Open the Edu-Logger software.
6. Click the “Off-line experiment” button.
7. Click the “Load data from sensors” button.

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8. Select which experimental data to upload (5
experimental runs can be stored at one time on
the 900-210 pressure sensor).
Restoring sensor’s factory default settings:
Procedure:
1. Connect the 900-213 module to a PC, Mac,
tablet, or smart device.
2. Connect the pressure 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 900-210 Pressure Sensor Guide (this
document).
Attached pressure hose with end piece for easy
connection.
Sensor specifications
atm
psi
kPa
bar
Range and
operation modes
0 to 7
0 to
100
0 to 700
0 to 7
ADC resolution
13 bit
Accuracy
±1%
Resolution
0.01
0.1
0.1
0.01
Max sample rate
(S/sec)
100
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 internal sensing equipment.
Hose with attachment piece connected directly to
the sensor body for easy connection to various
mediums.
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 pressure sensor uses the piezoresistive effect.
The transducer is based on silicon between metal foils
that changes its resistance according to pressure. One
side of it is at complete vacuum that enables to
measure the absolute pressure on its other side.
This transducer is built as a strain gauge with
Wheatstone bridge circuit so its output is a voltage
depends on it absolute pressure.
Maintenance and storage:
Never submerge the Edu-Logger plastic body in
any liquid

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Do not allow liquid into the Edu-Logger plastic
body.
After using the probe, wipe off all excess material,
liquid or residue from the 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. The warranty is for a
period of 3 years from the date of purchase and does
not cover damage of the product caused by improper
use, abuse, or incorrect storage. Sensors with a shelf
life such as ion selective probes 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