Vernier Go Direct GDX-WRT User manual

1
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. Click or tap Done to enter data-
collection mode.
Charging the Sensor
Connect Go Direct Wide-Range Temperature to the included Micro USB Cable
and any USB device for two hours.
You can also charge up to eight Go Direct Wide-Range Temperature Probes
using our Go Direct Charge Station, sold separately (order code: GDX-CRG).
An LED on each Go Direct Wide-Range Temperature indicates charging status.
Charging Blue LED on steady while sensor is connected to
the Charging Cable or Charging Station.
Fully charged Blue LED is off when charging is complete.
Providing Power
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-wrt
Connecting via Bluetooth
Ready to connect Red LED flashes when sensor is awake and
ready to connect via Bluetooth.
Connected Green LED flashes when sensor is connected via
Bluetooth.
Go Direct®
Wide-Range
Temperature
(Order Code GDX-WRT)
This rugged temperature probe features a wide temperature range, from –20°C to
330°C. The high upper limit of the sensor allows for melting point
determinations of most organic compounds. It uses platinum RTD (Resistance
Temperature Detector) technology to establish a ±0.5°C accuracy or better, as
well as excellent stability and repeatability. Each unit is individually calibrated,
and the calibration is stored on the sensor. It is designed to be used as you
would use a thermometer for experiments in organic and inorganic chemistry,
physics, biology, Earth science, and environmental science.
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
lGo Direct Wide-Range Temperature
lMicro USBCable
Compatible Software
See www.vernier.com/manuals/gdx-wrt for a list of software compatible with
GoDirectWide-RangeTemperature.
Getting Started
Please see the following link for platform-specific connection information:
www.vernier.com/start/gdx-wrt
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.
5. Click or tap Sensor Data
Collection.
1. Install Graphical Analysis 4 on your
computer or Chromebook. If using
LabQuest 2, make sure LabQuest
App is up to date. See
www.vernier.com/ga4 for software
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
to collect data.

2
Specifications
Temperature range –20°C to 330°C
Maximum temperature that the sensor can
tolerate without damage
380°C
Temperature sensing element Platinum RTD (100 Ω)
Accuracy ±0.3°C at 0°C
±0.2°C at 100°C
±0.5°C at 300°C
Response time from 25°C to 100°C in water 30 seconds
Probe dimensions Probe length (handle plus
body): 28cm
Stainless steel body: length
17cm, diameter 6.4mm
Probe handle: length 11cm,
width 3 cm.5, thickness 1.7
cm
Care and Maintenance
Probe Chemical Tolerance: The stainless-steel probe body is constructed from
grade 316 stainless steel. This high-grade stainless steel provides a high level of
corrosion resistance for use in the science laboratory. Here are some general
guidelines for usage:
lThe probe handle is constructed of molded plasticized Santoprene®. While
this material is very chemical resistant, we recommend that you avoid
submerging the probe beyond the stainless steel portion.
lAlways wash the probe thoroughly after use.
lThe probe can be left continuously in water at temperatures within the range
of –20°C to 330°C. Continuous usage in saltwater will cause only minor
discoloration of the probe, with no negative effect on performance.
lYou can leave the probe continuously in most organic compounds, such as
methanol, ethanol, 1-propanol, 2 propanol, 1-butanol, n-hexane, lauric acid,
paradichlorobenzene, phenyl salicylate, and benzoic acid. The probe should
not be left in n-pentane for more than one hour.
lThe probe can be left in strong basic solutions, such as NaOH, for up to
48hours, with only minor discoloration. We do not recommend usage in
basic solutions that are greater than 3 M in concentration.
lThe chart provides the maximum length of time we recommend for probe
exposure to some common acids. Probes left in an acid longer than these
times may bubble and/or discolor, but will still be functional. We do not
recommend probes be left to soak in any acid longer than 48 hours.
Connecting via USB
Connected and charging Blue and Green LED solid when sensor is con-
nected to Graphical Analysis via USB and unit
is charging. (Green LED is obscured by the blue
one.)
Connected, fully charged Green LED solid when sensor is connected to
Graphical Analysis via USB and the unit is fully
charged.
Charging via USB,
connected via Bluetooth
Blue LED is solid and green LED is flashing, but
the green flashing LED looks white because it is
overwhelmed by the blue.
Identifying the Sensor
When two or more sensors are connected, the sensors can be identified by
tapping or clicking Identify in Sensor Information.
Using the Product
Connect the sensor following the steps in the Getting Started section of this user
manual.
Important: When using this sensor, keep in mind that important electronic
circuitry is built into the handle of the probe. For optimal accuracy of the RTD,
keep the handle of the probe from warming above 40°C (104°F). If necessary,
shield the handle from high-temperature sources using aluminum foil or other
shielding material.
Calibration
Go Direct Wide-Range Temperature will never need to be calibrated. Each
probe is carefully calibrated before it ships, and this unique calibration is stored
on the sensor.

3
specialists will work with you to determine if the unit needs to be sent in for
repair. At that time, a Return Merchandise Authorization (RMA) number will be
issued and instructions will be communicated on how to return the unit for
repair.
Accessories/Replacements
Item Order Code
Micro USB Cable CB-USB-MICRO
USB-C to Micro USB cable CB-USB-C-MICRO
Go Direct 300 mAh Replacement Battery GDX-BAT-300
Warranty
Vernier warrants this product to be free from defects in materials and
workmanship for a period of five years from the date of shipment to the
customer. This warranty does not cover damage to the product caused by abuse
or improper use. This warranty covers educational institutions only.
Disposal
When disposing of this electronic product, do not treat it as household waste. Its
disposal is subject to regulations that vary by country and region. This item
should be given to an applicable collection point for the recycling of electrical
and electronic equipment. By ensuring that this product is disposed of correctly,
you help prevent potential negative consequences on human health or on the
environment. The recycling of materials will help to conserve natural resources.
For more detailed information about recycling this product, contact your local
city office or your disposal service.
Battery recycling information is available at www.call2recycle.org
Do not puncture or expose the battery to excessive heat or flame.
The symbol, shown here, indicates that this product must not be disposed of
in a standard waste container.
Federal Communication Commission Interference Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules.
These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
FCC Caution
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference and
(2) this device must accept any interference received, including interference that may cause undesired operation
RF Exposure Warning
Maximum acid exposure time
1 M HCl 20 min
2 M HCl 10 min
3 M HCl 5 min
1 M H2SO448 hours
2 M H2SO420 min
3 M H2SO410 min
Battery Information
Go Direct Wide-Range Temperature contains a small lithium-ion battery in the
handle. The system is designed to consume very little power and not put heavy
demands on the battery. Although the battery is warranted for one year, the
expected battery life should be several years. Replacement batteries are available
from Vernier (order code: GDX-BAT-300).
Storage and Maintenance
To store Go Direct Wide-Range Temperature for extended periods of time, put
the device in sleep mode by holding the button down for at least three seconds.
The red LED will stop flashing to show that the unit is in sleep mode. Over
several months, the battery will discharge but will not be damaged. After such
storage, charge the device for a few hours, and the unit will be ready to go.
Exposing the battery to temperatures over 35°C (95°F) will reduce its lifespan. If
possible, store the device in an area that is not exposed to temperature extremes.
Water Resistance
The body of the Go Direct Wide-Range Temperature Probe is not water resistant
and should never be immersed in water.
If water gets into the device, immediately power the unit down (press and hold
the power button for more than three seconds). Disconnect the sensor and
charging cable, and remove the battery. Allow the device to dry thoroughly
before attempting to use the device again. Do not attempt to dry using an
external heat source.
How the Sensor Works
The detector is a platinum RTD (Resistance Temperature Detector) sensor with
an output that increases nonlinearly with increasing temperature.
Troubleshooting
For troubleshooting and FAQs, see www.vernier.com/til/4038
Repair Information
If you have watched followed the troubleshooting steps and are still having
trouble with your Go Direct Wide-Range Temperature, contact Vernier
Technical Support at [e-mail] or call 888-837-6437. Support

4
The equipment complies with RF exposure limits set forth for an uncontrolled environment. The antenna(s) used for this transmitter must
not be co-located or operating in conjunction with any other antenna or transmitter. You are cautioned that changes or modifications not
expressly approved by the party responsible for compliance could void your authority to operate the equipment.
IC Statement
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device.
Industry Canada - Class B This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus
as set out in the interference-causing equipment standard entitled “Digital Apparatus,” ICES-003 of Industry Canada. Operation is subject
to the following two conditions: (1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device.
To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically
radiated power (e.i.r.p.) is not more than that permitted for successful communication.
RF exposure warning: The equipment complies with RF exposure limits set forth for an uncontrolled environment. The antenna(s) used
for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence. L’exploitation est
autorisée aux deux conditions suivantes :
(1) l’appareil ne doit pas produire de brouillage, et
(2) l’appareil doit accepter tout interférence radioélectrique, même si cela résulte à un brouillage susceptible d’en compromettre le
fonctionnement.
Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux appareils numériques de Classe B prescrites dans
la norme sur le matériel interférant-brouilleur: “Appareils Numériques,” NMB-003 édictée par industrie Canada. L’utilisation est soumise
aux deux conditions suivantes:
(1) cet appareil ne peut causer d’interférences, et
(2) cet appareil doit accepter toutes interférences, y comprises celles susceptibles de provoquer un disfonctionnement du dispositif.
Afin de réduire les interférences radio potentielles pour les autres utilisateurs, le type d’antenne et son gain doivent être choisie de telle
façon que l’équivalent de puissance isotrope émis (e.i.r.p) n’est pas plus grand que celui permis pour une communication établie.
Avertissement d’exposition RF: L’équipement est conforme aux limites d’exposition aux RF établies pour un environnement non
supervisé. L’antenne (s) utilisée pour ce transmetteur ne doit pas être jumelés ou fonctionner en conjonction avec toute autre antenne ou
transmetteur.
Note: This product is a sensitive measurement device. For best results, use the cables that were provided. Keep the device away from
electromagnetic noise sources, such as microwaves, monitors, electric motors, and appliances.
Vernier Software & Technology
13979 SW Millikan Way • Beaverton, OR 97005-2886
Toll Free [phone] • [phone] • Fax [phone]
[e-mail] • www.vernier.com
Rev. 04/02/18
Go Direct, Graphical Analysis, LabQuest, and other marks shown are our trademarks or registered trademarks in
the United States. All other marks not owned by us that appear herein are the property of their respective
owners, who may or may not be affiliated with, connected to, or sponsored by us.
The Bluetooth®word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of
such marks by Vernier Software & Technology is under license. Other trademarks and trade names are those of
their respective owners.