You can look up the calibration data for most LI-COR instruments by selecting Calibration Certificates above the search bar and entering the serial number. You can also contact us to get the information.

Light sensors output a voltage or current signal, which can be read by the LI-250A, LI-1500, or many dataloggers.

To fix a dataset, simply divide by the incorrect multiplier and multiply by the correct multiplier.

0 to 25 mV, or 16-bit 0 to 100 mV.

This question is most often asked to determine whether the measurements being obtained are reliable and correct. In this case, one generally wants to know the “full-scale” response of their sensor, or what would be seen under the most ideal conditions. However, LI-COR light sensors can measure values far above the full-scale response, so the maximum value that can be obtained may not be a correct value to use when determining whether the measurements are reliable and correct.

The LI-190/R, LI-191/R, LI-192, and LI-193 are all quantum sensors. All of our quantum sensors have a linear response up to 10,000 μmol m^-2 s^-1, but the full-scale value on a clear sunny day is approximately 2000 μmol m^-2 s^-1. Again, spikes due to cloud-edge effects can be higher, but these readings should be transient.

If you have any questions about accuracy of LI-COR light sensors, please contact us for assistance.