Instructions

1
5. Click or tap Sensor Data
Collection.
6. Click or tap your Go Direct sensor
from the list of Discovered
Wireless Devices. Your sensor's ID
is located near the barcode on the
sensor. The Bluetooth LED will
blink green when it is successfully
connected.
7. This is a multi-channel sensor. The
active channel is listed in the
Connected Devices Sensor
Channels list. To change channels,
select the check box next to the
Sensor Channel(s) you would like
to activate.
8. Click or tap Done to enter
data-collection mode.
to collect data.
4. This is a multi-channel sensor. To
change the default channel
selections, see
www.vernier.com/start/gdx-o2
Charging the Sensor
Connect Go Direct O
2
Gas to the included Micro USB Cable and any USB
device for two hours.
You can also charge up to eight Go Direct O
2
Gas Sensors using our Go Direct
Charge Station, sold separately (order code: GDX-CRG). An LED on each
GoDirectO
2
Gas indicates charging status.
Charging
Blue LED on steady while sensor is connected to
the Micro USB Cable or Charge Station.
Fully charged
Blue LED is off when charging is complete.
Powering the Sensor
Turning on the sensor
Press button once. Red LED indicator flashes
when unit is on.
Putting the sensor in sleep
mode
Press and hold button for more than three
seconds to put into sleep mode. Red LED
indicator stops flashing when sleeping.
Connecting the Sensor
See the following link for up-to-date connection information:
www.vernier.com/start/gdx-o2
Go Direct
®
O
2
Gas
(Order Code GDX-O2)
Go Direct O
2
Gas measures gaseous oxygen concentration and air temperature.
This sensor has a wide measurement range, which is ideal for studying human
and cellular respiration. A 250 mL Nalgene bottle is included for running
controlled experiments with small plants and animals.
Go Direct O
2
Gas can be used in a variety of experiments:
l Test catalase activity under various conditions.
l Measure oxygen consumption at rest and after exercise.
l Measure the change in O
2
gas produced during photosynthesis.
l Compare the rates of cell respiration in germinating and non-germinating
peas.
Note: Vernier products are designed for educational use. Our products are not
designed nor are they recommended for any industrial, medical, or commercial
process such as life support, patient diagnosis, control of a manufacturing
process, or industrial testing of any kind.
What's Included
l Go Direct O
2
Gas
l Micro USBCable
l 250 mL Nalgene Bottle w/Lid
Compatible Software
See www.vernier.com/manuals/gdx-o2 for a list of software compatible with
GoDirectO
2
Gas.
Getting Started
Please see the following link for platform-specific connection information:
www.vernier.com/start/gdx-o2
Bluetooth Connection USB Connection
1. Install Graphical Analysis 4 on
your computer, Chromebook™, or
mobile device. See
www.vernier.com/ga4 for software
availability.
2. Charge your sensor for at least
2hours before first use.
3. Turn on your sensor by pressing
the power button once. The
Bluetooth
®
LED will blink red.
4. Launch Graphical Analysis 4.
1. If using a computer or Chromebook,
install Graphical Analysis 4. If using
LabQuest 2, make sure LabQuest
App is up to date. See
www.vernier.com/ga4 for Graphical
Analysis 4 availability or
www.vernier.com/downloads to
update LabQuest App.
2. Connect the sensor to the USB port.
3. Launch Graphical Analysis 4 or turn
on LabQuest 2. You are now ready