NeuLog NUL-221 User manual
NEULOG BAROMETER LOGGER SENSOR GUIDE
NeuLog barometer logger sensor
NUL-221
The NeuLog barometer sensor can be used for any science experiment which
requires an accurate atmospheric pressure measurement such as in the fields of
Physics, Biology, Physiology, Exercise Science, Environmental Science, Earth
Science, Weather Science, Botany, etc.
The sensor comes pre-calibrated so you can start experimentation right out of the box
using this guide.
Among hundreds of possible experiments that can be performed with the NUL-221
sensor are: demonstration of how pressure is related to altitude, exercise studies at
different altitudes, effects of pressure changes on a plant's growth, weather
experiments, and many more.
The barometer sensor can collect data using four different units of measurement:
Kilopascal (kPa): The SI unit of pressure
Atmospheres (atm): A pressure unit equal to one Earth atmosphere at sea
level (101.325 kPa)
Inches of mercury (in Hg): A non-SI unit of atmospheric pressure
Millimeters of mercury (mm Hg): A non-SI unit of atmospheric pressure
Quick start procedure:
PC or Mac Computer
Materials needed:
NUL-221 Barometer Sensor
USB-200 USB Module
USB to mini USB cable (included with the USB-200 module)
Your barometer sensor needs to be connected to a USB-200 module. The USB-200
module then connects to a computer via a USB to mini-USB cable. Please note that
you cannot plug the barometer sensor directly into the computer.
The browser based application can be downloaded for free at www.NeuLog.com as
well as a full application user guide.
Choose "Downloads" on the main menu and then choose "Software and Application".
Procedure:
1. Install the NeuLog application.
2. Connect the USB-200 module to the PC or Mac.
3. Connect the barometer sensor to the USB-200 module (they directly plug
together). Please note that no calibration is required for this sensor.
4. Open the NeuLog application by clicking on the shortcut on the screen.
5. Once a barometer sensor module box appears on the left side of the screen the
probe has been automatically identified and you can begin experimentation.
6. If the barometer sensor is not automatically identified, click the “Search for
sensors” icon to find the sensor.
7. Select the “On-line experiment” icon; this will open a graph below.
8. Click on the “Module setup” button located in the barometer sensor module box
to change the sensor's settings if need be.
9. Click on the "Experiment setup" button to change the experiment settings if need
be (experiment duration for example).
10. The barometer sensor will give a live reading in the module box to the left of the
screen while plugged in.
11. To run an experiment and collect data click the “Run experiment” icon.
12. To end data collection early, click the “Stop experiment” icon.
Tablet, smart phone device
Materials needed:
NUL-221 Barometer Sensor
WIFI-201 WIFI Module
BAT-200 Battery Module
Your barometer sensor needs to be connected to a WIFI-201 module. The WIFI-201
module will create a closed NeuLog wifi network which will stream the NeuLog data to
a device of your choosing. Once your device is wirelessly connected to the NeuLog
network, you can run experiments and collect data through a browser of your
choosing.
Procedure:
1. Connect the barometer sensor directly to the left side of a WIFI-201 module (no
wires required).
2. Connect a BAT-200 module to the right side of the WIFI-201 module.
NEULOG BAROMETER LOGGER SENSOR GUIDE
3. Although not required, we recommend plugging the BAT-200 to an outlet using a
USB to mini USB charger (such as a typical cell phone charger). The WIFI-201
module will run for 60-90 minutes (depending on the sensor) without being
plugged in.
4. The WIFI-201 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 WIFI-201 modules with the USB icon on the cover.
5. For further WIFI-201 instructions or the WIFI-201 quick start guide please visit:
www.NeuLog.com; Choose "Products" on the main menu,
then choose "WiFi Communication module".
6. The WIFI-201 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 NeuLog
network (NeuLog0184 for example) which matches the ID found on the back of
the WIFI-201 module (0184 for example).
8. Give your device about 20 seconds to connect to the WIFI-201.
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 application, click on it.
11. The application 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 application does not auto detect the sensor(s), select “Search for sensors”.
13. Once the sensor is found you will see a module box on the left side of the screen
for the barometer sensor. In this box, real time data will be displayed.
14. Click on the “Module setup” button located in the barometer sensor module box
to change the barometer probe's settings if need be.
15. Click on the “Experiment setup” icon to change the experiment settings if need
be (Experiment duration for example).
16. To run an experiment and collect data, click the “On-Line experiment” icon, then
click the "Run experiment" icon.
17. If you have a newer generation WIFI-201 module (with the USB icon on the
cover) this can be used as a USB-200, meaning you can tether the probes
directly to the computer using the WIFI-201. To engage operation in this fashion,
press 3 times on the panel button. Repeating this operation will return the
module to WiFi mode.
Operation with NeuLog Graphic Display Module (viewer)
Materials needed:
NUL-221 Barometer Sensor
VIEW-101 Graphic Display Module
BAT-200 Battery Module
Procedure:
1. Connect the barometer sensor to the left side of the viewer.
2. Connect the BAT-200 module to the right side of the viewer.
3. The VIEW-101 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 press the run icon (little green person).
Off-line experiments
(Off-line experiments are when you do not have a sensor connected directly to a
computer, tablet, smartphone, or NeuLog viewer).
Materials needed:
NUL-221 Barometer Sensor
BAT-200 Battery Module
Materials needed to configure your offline experiment:
USB-200 Module, WIFI-201 module or VIEW-101 Module
USB to mini USB cable (included with the USB-200 module)
Procedure:
1. To determine the experiment settings, first connect to your chosen device (PC,
Mac, tablet, smart device) and click on the “Off-line experiment” icon after the
sensor search has ended. (For more information on how to change the
experiment settings, view the quick start procedure section for your chosen
device in this document.)
2. Connect the barometer sensor directly to the left side of a charged BAT-200
module.
NEULOG BAROMETER LOGGER SENSOR GUIDE
3. When ready to collect data, press the “Start/Stop” button on the barometer
sensor; a red light will turn on for the duration of the experiment.
4. After the experiment has concluded (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 NeuLog application.
6. Click the “Off-line experiment” icon.
7. Click the “Load data from sensors” icon.
8. Select which experimental data to upload (5 experimental runs can be stored at
one time on the NUL-221 barometer sensor).
Restoring sensor’s factory default settings:
Procedure:
1. Connect the USB-200 module to a PC, Mac, tablet, or smart device.
2. Connect the barometer sensor to a USB-200 module (they directly plug
together).
3. Open the NeuLog application.
4. Click the “Tools” icon.
5. Click the “Restore sensor’s factory defaults” on the menu.
Included with the sensor:
NeuLog NUL-221 Barometer Sensor Guide (this document)
Sensor's specifications:
Range and
operation
modes
ADC
resolution
Resolution
Max sample
rate (S/sec)
80 to 106
kPa
15 bit
0.1 kPa
100
0.8 to 1.00
atm
0.01 atm
23.60 to
31.30 in Hg
0.03 in Hg
600 to 795
mm Hg
0.8 mm Hg
-380 to 1950
m
0.8 m
Experiment Duration: 1 second to 31 days.
Sensor's 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: NeuLog products are intended for educational use.
Videos and experiment examples:
Videos, literature and other probes can be found at www.NeuLog.com.
In order to access the barometer sensor's page, choose "Products" on the main
menu and then "Barometer logger sensor".
In order to find the science experiments, choose "Experiments" on the main
menu of the NeuLog website, then choose "Physics", "Chemistry", "Biology" or
"Environmental Science".
Environmental Science Experiment:
oAir Pressure and Altitude (E-2)
Technical background:
The philosophy behind NeuLog’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 NeuLog 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 barometer sensor uses the piezoresistive effect. The transducer is made of two
metal foils separated by silicon; when pressure is applied on the transducer its
resistance changes. One side of it is at complete vacuum which enables the
measurement of the absolute pressure on its other side.
This transducer is built as a strain gauge with a Wheatstone bridge circuit. Its voltage's
output depends on the absolute pressure.
NEULOG BAROMETER LOGGER SENSOR GUIDE
Maintenance and storage:
Never submerge the NeuLog plastic body in any liquid.
Do not allow liquid into the barometer sensor’s body.
After use, gently wipe away any foreign material from the barometer 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.
Thank you for using NeuLog!
Flexible, simple, fast, forward thinking.
W: www.neulog.com
E: info@neulog.com
A: 850 St Paul Street, Suite 15, Rochester, NY 14605
P: 1.866.553.8536
V11042014
