Radiation that drives photosynthesis is called photosynthetically active radiation (PAR) and is defined as the total amount of quanta across a the spectral range of 400 to 700 nm.
The summed amount of light across this range is called the photosy...
Debris on any PAR sensor lens will partially block the optical path and will lead to low readings. Dust and other organic deposits are best removed using water, or window cleaner. Never use an abrasive cleaner on the lens. Salt deposits can also accu...
For instructions on applying a correction factor to the PAR sensor readings, seeHow do I apply a Correction Factor to Vernier PAR sensors?
For most cases you will not need to use a correction factor when measuring Photosynthetic Photon Flux Densi...
Vernier PAR sensors are calibrated before shipping and should not need calibration. You can verify the calibration using the Clear Sky Calculator at:
www.clearskycalculator.com
The Clear Sky Calculator for Quantum Sensors reports the theoretical PPF...
The Vernier light sensors can not be used to measure PAR, photosynthetically active radiation. They do not have the right spectral response nor are they calibrated correctly.
If you want to measure PAR you should consider purchasing a Vernier PAR sen...
Yes.
Logger Pro 3.8.3 is the first version to support Ocean Optics devices on 64-bit Windows Vista and Windows 7....
1) Separate the light source/cuvette holder from the detector. To do this, look at the "bottom" (not the underside) of the light source end of the spectrometer and find the 2 holes in which the set screws are deeply recessed (about 6cm, or ~2.5 in.)....
First, get a small screwdriver with a flat head. We found one at Ace Hardware, for $0.89, that works perfectly. The screwdriver's head should be about 1/4 inch and its length should be at least 2 1/2 inches. There are two set screws you need to loose...
Set up your spectrometer to collect a full absorbance spectrum with a computer and Logger Pro 3. Follow these steps to prepare the column of % transmittance data:
1) Open the Data menu and choose New Calculated Column.
2) (Optional) Name the new co...
Follow the steps below to add a file of emission spectrum data to a graph:
Measure the emission spectrum of a light source (spectrum tube, LED, etc).
Click File and then choose Import From ▶ Logger Pro File…
Find the Logger Pro 3 file ...