We often offer free repairs even outside a product's warranty. However, we can no longer purchase replacement parts for original LabQuest units. The last unit was sold in 2014, and all original LabQuest units are now out of warranty.
Note that the tw...
The values 650 nm, 550 nm, and 450 nm refer to the peak wavelengths of visible light to which the color sensors respond. These wavelengths correspond approximately to red, green, and blue.
Go Direct Light and Color Sensor Troubleshooting and FAQs...
There have been multiple versions of the UV sensing element in the Go Direct® Light and Color Sensor (GDX-LC).
Year releasedLabel on the Go Direct® Light and Color Sensor (GDX-LC)Half-sensitivity range (nm)Notes2017UVA/UVB or UVA (changed...
Nominal values for gain settings (+/- 5%)
0 - 20mV
slope 150.70
x intercept 0
0 - 200mV
slope 15.97
x intercept 0
0 - 1V
slope 3.24
x intercept 0
-20mV to 20 mV
slope 75.85
x intercept -0.024V
-200mV to 200mV
slope 8.48
x ...
Because pH calibrations will drift over time, periodically creating a new custom calibration provides more accurate readings. Vernier pH sensors have the ability to create a custom calibration and store it in the sensor's memory. By default, this sto...
This information pertains to LabQuest 2 and LabQuest 3.
If you have an original LabQuest, see this article.
The clock on the LabQuest 2 and LabQuest 3 can be synced from a variety of sources, including your computer (via Logger Pro or Logger Li...
Go Direct® ORP Sensor (GDX-ORP)
Specifications and User Guide
Troubleshooting
General: Press the power button on the sensor to turn it on. Connect your sensor as described in the Getting Started instructions for your devic...
We do not maintain a list of chemicals specifically damaging to the sensing unit. It is not designed to come into contact with liquids.
We assume that aqueous solutions will not be allowed to enter the sensor and that discretion would be used whe...
Go Direct® Constant Current System (GDX-CCS)
Specifications and User Guide
Troubleshooting
Primary Test:
Connect the AC power adapter to the Constant Current System.
Connect your sensor as described in the Getting...
Constant Current System (CCS-BTA)
Specifications and User Guide
Troubleshooting
Primary Test:
Connect the Constant Current System to the interface.
Connect the AC power adapter. (Included, but the same as LabQuest® Po...