Full spectrum led grow lights UK are fixed in their specified grow area and optimum hanging height. So professional researchers or growers want to calculate the average PAR intensity and usable PAR output of the grow light fixtures through the quantum sensor to test all grow areas and take multiple PAR measurements.
How to choose the right LED grow lights?
1. Full spectrum led grow lights UK PAR.
Full spectrum led grow lights UK PAR is photosynthetic active radiation. PAR light is the wavelengths of light within the visible range of 400 to 700 nanometers (nm) that drive photosynthesis. Photosynthetically Active Radiation, the light that plants use to grow. PAR defines the type of light needed to support photosynthesis. The amount and spectral light quality of PAR light are the important metrics to focus on.
2. Full spectrum led grow lights UK Quantum sensors test.
Quantum sensors are the primary instrument used to quantify the light intensity of horticulture lighting systems. These sensors work by using an optical filter to create a uniform sensitivity to PAR light and can be used in combination with a light meter to measure the instantaneous light intensity or a data logger to measure cumulative light intensity.
3. How much PAR the Full spectrum led grow lights UK？
You need to know the PPF, PPFD, and photon efficiency of full spectrum led grow lights UK to know firstly professional tec.
PPF is photosynthetic photon flux. PPF measures the total amount of PAR that is produced by a lighting system each second. This measurement is taken using a specialized instrument called an integrating sphere that captures and measures essentially all photons emitted by a lighting system. The unit used to express PPF is micromoles per second (μmol/s). This is probably the second most important way of measuring a horticulture lighting system, but, for whatever reason, most lighting companies don’t list this metric. It is important to note that PPF does not tell you how much of the measured light actually lands on the plants, but is an important metric if you want to calculate how efficient a lighting system is at creating PAR.
PPFD is photosynthetic photon flux density. PPFD measures the amount of PAR that actually arrives at the plant, or as a scientist might say: “the number of photosynthetically active photons that fall on a given surface each second”. PPFD is a ‘spot’ measurement of a specific location on your plant canopy, and it is measured in micromoles per square meter per second (μmol/m2/s). If you want to find out the true light intensity of a lamp over a designated growing area (e.g. 4’ x 4’), it is important that the average of several PPFD measurements at a defined height are taken. Lighting companies that only publish the PPFD at the center point of a coverage area grossly overestimate the true light intensity of a fixture. A single measurement does not tell you much, since horticulture lights are generally brightest in the center, with light levels decreasing as measurements are taken towards the edges of the coverage area. (Caveat Emptor: Lighting manufacturers can easily manipulate PPFD data. To ensure you are getting actual PPFD values over a defined growing area, the following needs to be published by the manufacturer: measurement distance from light source (vertical and horizontal), number of measurements included in the average, and the min/max ratio). Fluence always publishes the average PPFD over a defined growing area at a recommended mounting height for all of our lighting systems.
Photon Efficacy refers to how efficient a horticulture lighting system is at converting electrical energy into photons of PAR. Many horticulture lighting manufacturers use total electrical watts or watts per square foot as a metric to describe light intensity. However, these metrics really don’t tell you anything since watts are a measurement describing electrical input, not light output. If the PPF of the light is known along with the input wattage, you can calculate how efficient a horticulture lighting system is at converting electrical energy into PAR. As a reminder, the unit for PPF is μmol/s, and the unit to measure watts is Joule per second (J/s), therefore, the seconds in the numerator and denominator cancel out, and the unit becomes µmol/J. The higher this number is, the more efficient a lighting system is at converting electrical energy into photons of PAR.
4. Full spectrum led grow lights UK using usual cost.
We need to face the cost of Full spectrum led grow lights UK and the running cost.
The total cost of the grow light over 1-3 years can be compared. The cost of the fixture or the relative cost per watt is generally higher for higher efficiency-led grow lights. This means the running costs will be relatively cheaper for the higher cost lights. In short, you pay more upfront and then less over the life of the grow light. The Full spectrum cheap led grow lights UK higher efficiency lights quickly earn back the extra spent upfront. Hope each grower will be making a great decision about the Full spectrum led grow lights UK.