Troubleshooting; Warranty - Vernier Go Direct GDX-ODO Instruction Manual

This time is measured and correlated to the oxygen concentration. Between the
flashes of blue light, a red LED is flashed onto the probe and used as an internal
reference to help validate each measurement. This process is described by the
Stern-Volmer equation
τ0 / τ = 1 + Ksv[DO]
where τ0 and τ are the luminescence lifetimes in the absence and presence of
oxygen, respectively, [DO] is the dissolved oxygen concentration, and Ksv is the
Stern-Volmer quenching constant.
The Stern-Volmer constant (Ksv) depends directly upon the rate constant for the
diffusion of oxygen, the solubility of oxygen, and the natural lifetime of the
electronic excited state of the luminophore. Lifetime measurements have an
advantage over intensity measurements since they are not usually affected by
processes which result in loss of the complex, such as bleaching or
photodegradation.
Interior schematic of the Optical Dissolved Oxygen Probe

Troubleshooting

If the probe seems to be giving incorrect values:
Give the probe a few minutes to equilibrate in the sample, especially if the
l
water is not at room temperature.
Reset the calibration using the instructions above in the Calibrating the Sensor
l
section.
For troubleshooting and FAQs, see
Repair Information
If you have followed the troubleshooting steps and are still having trouble with
your Go Direct Optical Dissolved Oxygen, contact Vernier Technical Support at
support@vernier.com or call 888-837-6437. Support 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.
www.vernier.com/til/4227
Accessories/Replacements
Item
Micro USB Cable
USB-C to Micro USB Cable
Go Direct 650 mAh Replacement Battery
Go Direct Optical Dissolved Oxygen
Replacement Cap
Optical DO Probe Metal Guard
Electrode Storage Bottle

Warranty

Warranty information for this product can be found on the Support tab at
www.vernier.com/gdx-odo
General warranty information can be found at
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
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
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.
4
Order Code
CB-USB-MICRO
CB-USB-C-MICRO
GDX-BAT-650
GDX-ODO-CAP
ODO-GRD
BTL-ES
www.vernier.com/warranty
www.call2recycle.org