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Troubleshooting
For troubleshooting and FAQs, see
Repair Information
If you have watched the related product video(s), followed the troubleshooting
steps, and are still having trouble with your Turbidity Sensor, contact Vernier
Technical Support at [email protected] 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.
Accessories/Replacements
Item
Order Code
TRB-BOT
Turbidity Accessories Replacement Kit
TRB-ACC
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.
The symbol, shown here, indicates that this product must not be disposed of
in a standard waste container.
l
For instructions on calibration using Graphical Analysis with an iOS or
Android device, see
Specifications
Range:
0 to 200 NTU
Resolution:
0.25 NTU
Accuracy:
±2 NTU for readings under 25 NTU
±5 of readings above 25 NTU
LED wavelength: 890 nm
Standard:
StablCal Formazin Standard 100 NTU
Care and Maintenance
When you have finished using the Turbidity Sensor, simply rinse the sample
cuvette with distilled water. It is important to take good care of your cuvette
and the Turbidity Standard. Their integrity is essential for accurate turbidity
measurements.
Do not wrap the cable tightly around the sensor for storage. Repeatedly doing
so can irreparably damage the wires and is not covered under warranty.
How the Sensor Works
Infrared light is directed at a cuvette containing the sample water. This light is
scattered in all directions off the particles in the water. A detector, consisting of
a photodiode, is placed at a 90° angle to the light source. The amount of light
being scattered directly into the detector is measured in volts and translated into
turbidity units. This style of turbidity sensor is called a nephelometer. A
standard is used to calibrate the Turbidity Sensor in units of NTU,
Nephelometric Turbidity Units.
Figure 1 Top View of Turbidity Sensor’s Internal Mechanism
This sensor is equipped with circuitry that supports auto-ID. When used with
LabQuest 2, LabQuest, LabQuest Mini, LabPro, Go! Link, SensorDAQ,
EasyLink, TI-Nspire™ Lab Cradle, or CBL 2™, the data-collection software
identifies the sensor and uses pre-defined parameters to configure an
experiment appropriate to the recognized sensor.