Edu-Logger 900-207 User manual

Edu-Logger Relative Humidity
Logger Sensor Guide
900-207

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Edu-Logger Relative Humidity logger
sensor
900-207
The Edu-Logger relative humidity sensor can be used
for any science experiment which requires an accurate
relative humidity reading such as in the fields of
Biology, Physiology, Exercise Science, Chemistry,
Environmental Science, Earth Science, Weather
Science, Botany, Entomology, etc.
The sensor comes pre-calibrated so you can start
experimentation right out of the box using this guide.
Hundreds of possible experiments that can be
performed with the 900-207 sensors are: perspiration,
photosynthesis rates, insect behavior, water vapor
emitting chemical reactions, ecological studies, animal
behavior and weather patterns.
Relative humidity is a measurement which examines
the ratio of water vapor present in the air compared
with the maximum amount of water vapor that the air
can hold for a specific temperature.
Data is presented as a percentage which is the
ratio of the amount of water vapor in the air
versus the maximum amount that could be
allowed at a given temperature.

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Quick start procedure:
PC or Mac Computer
Materials needed:
900-207 Relative Humidity Sensor
900-213 USB Module
USB to mini USB cable (included with the 900-
213 module)
Your relative humidity 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 relative humidity
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 relative humidity sensor to the 900-
213 module (they directly plug together). Please
note no calibration is required for this sensor.
4. Open the Edu-Logger software.
5. Once a relative humidity sensor logo appears on
the left side of the screen the probe has been
automatically identified and you can begin
experimentation.
6. If the relative humidity sensor is not
automatically identified, 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 relative humidity sensor icon in the module
window to change the sensor's 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 relative humidity 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:
900-207 Relative Humidity Sensor
900-268 WiFi Module
900-215 Battery Module
Your relative humidity 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 the 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 Relative Humidity 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.

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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 relative
humidity sensor. The icon will display data in
real time.

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14. Click on the “Module setup” button located on
the relative humidity sensor icon in the module
window to change the relative humidity 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:
900-207 Relative Humidity Sensor
900-272 Graphic Display Module
900-215 Battery Module
Procedure:
1. Connect the relative humidity 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:
900-207 Relative Humidity Sensor
900-215 Battery Module
Materials needed to configure your offline
experiment:
900-213 Module, 900-268 module or 900-272
Module.
USB to mini USB cable (included with the 900-
213 module)
Procedure:
1. Connect the relative humidity 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 relative humidity 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 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 900-207 relative humidity sensor).
Restoring sensor’s factory default settings:
Procedure:
1. Connect the 900-213 to a PC, Mac, tablet, or
smart device.
2. Connect the relative humidity sensor to a 900-
213 module (they directly plug together). Please
note no calibration is 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”
button (whichever you are using).
7. Click “Clear experiment results”.
8. Resume from step 4.

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Included with sensor:
Edu-Logger 900-207 Relative Humidity Sensor
guide (this document).
Sensor specifications
Relative humidity level
Range and operation modes
0 to 100% RH
ADC resolution
16 bit digital
Accuracy
± 5% RH
Resolution
0.1%
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 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 for free at any
time using the provided firmware update.
The relative humidity sensor’s probe houses a
capacitive polymer which reacts with water vapor
present in the air. The reaction with the polymer
produces a voltage which is relative to the
concentration of water vapor in the air.

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Maintenance and storage:
Never submerge the Edu-Logger plastic body in
any liquid.
Do not allow liquid into the relative humidity
sensor’s body.
After use, gently wipe away any foreign material
from the relative humidity 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: [e-mail]
V10012013