Vernier Go Direct PAR Manual

®
Go Direct PAR
(Order Code GDX-PAR)
The Go Direct PAR
(Photosynthetically Active
Radiation) Sensor measures
photosynthetic light levels in both air
and water. The sensor responds to visible light in the spectral range that is used by
plants in photosynthesis (400–700 nm). It features a waterproof sensor head and
connector and reports the Photosynthetic Photon Flux Density (PPFD), which is
-2 -1
measured in μmol m s (micromoles of photons per meter squared per second).
The sensor is calibrated for use in sunlight, but can also be used to measure PPFD
from electric light sources. This sensor is ideal for experiments that investigate
photosynthesis and primary productivity and can also be used in many agricultural
and environmental science applications. The Go Direct PAR Sensor has a 5 m
cable.
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
Go Direct PAR
l
Micro USB Cable
l
Cover for the lens of the Go Direct PAR sensor
l
Compatible Software
See
www.vernier.com/manuals/gdx-par
Direct PAR.

Getting Started

Please see the following link for platform-specific connection information:
www.vernier.com/start/gdx-par
Bluetooth Connection
1. Install Vernier Graphical Analysis
on your computer, Chromebook™,
or mobile device. If using
®
LabQuest , make sure LabQuest
App is up to date. See
www.vernier.com/ga for Graphical
Analysis Pro availability or
www.vernier.com/downloads to
update LabQuest App.
2. Charge your sensor for at least
2 hours before first use.
for a list of software compatible with Go
USB Connection
®
1. Install Graphical Analysis on your
computer or Chromebook. If using
LabQuest, make sure LabQuest App
is up to date. See
www.vernier.com/ga for software
availability or
www.vernier.com/downloads to
update LabQuest App.
2. Connect the sensor to the USB port.
3. Launch Graphical Analysis or turn
on LabQuest. You are now ready to
3. Turn on your sensor by pressing the
power button once. The LED will
blink red.
4. Launch Graphical Analysis or turn
on LabQuest.
5. If using Graphical Analysis, click or
tap Sensor Data Collection. If using
LabQuest, choose Wireless Device
Setup > Go Direct from the Sensors
menu.
6. Select your Go Direct sensor from
the list of Discovered Wireless
Devices. Your sensor's ID is located
near the barcode on the sensor. The
LED will blink green when it is
successfully connected.
7. Click or tap Done to enter data-
collection mode.

Charging the Sensor

Connect Go Direct PAR to the included Micro USB Cable and any USB device
for two hours.
You can also charge up to eight Go Direct PAR Sensors using our Go Direct
Charge Station, sold separately (order code: GDX-CRG). An LED on each Go
Direct PAR indicates charging status.
Charging
Fully charged

Providing Power

Turning on the sensor
Putting the sensor in sleep
mode

Connecting the Sensor

See the following link for up-to-date connection information:
www.vernier.com/start/gdx-par
1
collect data.
Note: This sensor does not work with
the original LabQuest. It works with
LabQuest 2 or LabQuest 3.
Orange LED next to the battery icon is solid while
the sensor is charging.
Green LED next to the battery icon is solid when
the sensor is fully charged.
Press button once. Red LED indicator flashes
when unit is on.
Press and hold button for more than three seconds
to put into sleep mode. Red LED indicator stops
flashing when sleeping.