LI-193 | LI-COR Environmental NewsLine

Posts Tagged ‘LI-193’

Measuring PPFD and PPFFR with LI-COR Underwater Radiation Sensors

Tuesday, February 5th, 2013

Phytoplankton, algae, and aquatic plants use photosynthetically active radiation (PAR) with wavelengths between 400 and 700 nanometers for photosynthesis. This radiation comes from the sun and its intensity is characterized as Photosynthetic Photon Flux Density (PPFD) in units of micromoles of photons per square meter per second (µmol/m2/s). These organisms are also illuminated by reflections…

Daily Light Integral (DLI) measurement using LI-COR Light Sensors

Tuesday, January 8th, 2013

Definition of DLI The daily light integral (DLI) is a measure of the amount of light received in a single day in a particular area. For example, the number of moles of Photosynthetically Active Radiation (PAR) photons received during a single day in a square meter, or: mol m-2 d-1. Another example is the total…

Exploring the Black (and Blue) Holes of the Bahamas

Tuesday, March 1st, 2011

On the central and western side of the island of South Andros in the Bahamas, one can find a series of cavern systems formed in the limestone rock platforms that comprise most of the islands. These submerged cave systems are commonly referred to as Blue or Black Holes. Blue Holes are horizontal caves, often with…

Turn Ons and Turn Offs

Monday, October 5th, 2009

The LI-1400 Datalogger is often used for collecting environmental data using a variety of LI-COR Biosciences sensors. These include the LI-190 Quantum Sensor, the LI-192 Underwater Quantum Sensor, the LI-193 Spherical Quantum Sensor, and the LI-200 Pyranometer, among others. You can either program their LI-1400 to collect data automatically or set it up to collect…

Obtaining Correct (Positive) Values with LI-COR Underwater Radiation Sensors

Saturday, October 6th, 2007

The LI-192 Underwater Quantum Sensor and LI-193 Spherical Quantum Sensor from LI-COR are terminated with two pins that mate with the underwater cable (Figure 1). In order to obtain the correct (positive) readings when using the underwater sensors, it is important to attach the sensor and underwater cable correctly. There is a yellow dot on…

LI-COR Environmental NewsLine

Measuring Change in a Changing World®

Measuring PPFD and PPFFR with LI-COR Underwater Radiation Sensors

Daily Light Integral (DLI) measurement using LI-COR Light Sensors

Exploring the Black (and Blue) Holes of the Bahamas

Turn Ons and Turn Offs

Obtaining Correct (Positive) Values with LI-COR Underwater Radiation Sensors

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