On this page, we regularly post new substantive articles on topics such as: new developments, research, application of LED, sensors, data, and insights.
Knowledge base
Sensors
CO2 Sensor | What is it and how do you use it?
A CO2 sensor measures the concentration of carbon dioxide (CO2) in the air in “parts per million (pp…
Sensors
Soil Sensor | What is it and how do you use it?
A soil sensor is a device that measures three variables of the substrate (the nutrient soil on which…
Sensors
PAR Sensor | What is it and how to use it?
The PAR sensor measures the radiation between 400-700 nm (the light spectrum used by plants for phot…
Insights
How do you verify performance claims and degradation of LED lamps
When you decide to invest in LED lighting, you want to make an informed decision regarding the suppl…
Insights, LED
Are You Buying LED Lamps or LED Myths
The brand-independent specialists at Ledgnd have observed that providers of LED fixtures often exagg…
LED
Is dynamic control the next step for LED?
What is dynamic control for LED? Orchid grower Jan has purchased a Hybrid-LED system with 5%…
Terms
Output (PPFD) degrades due to LED heating.
After the LEDs have been on for 15 minutes, the output (PPFD) decreased. This is due to the heating…
Terms
Efficiency – μmol/watt
It’s not just about light output, but also about the ratio between yield (light) and consumption (wa…
Terms
P.A.R. (Fotosynthetic Active Radiation)
What is Photosynthetically Active Radiation (PAR)? Plants and humans perceive light very differently…
Micromol (μmol/s), PPF and PPFD
Micromol μMol/s (micromol) is the unit in which P.A.R. is expressed. This unit indicates how many mi…
Terms
Daily Light Integral (DLI)
DLI The Daily Light Integral (DLI) is a tool used to measure the total amount of PAR light that the…
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