Quantum PAR Meter PPFD Tester for Plants

The Santacary XAR-P20 Quantum PAR light meter is designed to measure Photosynthetic Photon Flux Density (PPFD), which is the sum of photons in units of micromoles per square meter per second (μmol/m2/s). This meter also measures the Daily Light Integral (DLI), which is typically reported in units of moles of photons per square meter per day (mol/m2/d).

The XAR-P20 offers three modes of operation: instant spot-check measurement mode for PPFD readings, scan mode for quickly averaging PAR over an area, and DLI mode for displaying the Daily Light Integral. The meter provides accurate and instant response, with a large backlit display that is easy to read.

The device's spectral range is 400-700 nm, which covers the range of photosynthetically active radiation. It can measure PAR light levels from 0 to 9999 μmol/m2/s, making it suitable for use in both full sun and full shade, indoors or outdoors, and with various artificial light sources such as LED, High Pressure Sodium, Metal Halide, Fluorescent, and Halogen.

The XAR-P20 is easy to operate, with only two buttons. It is powered by four AA alkaline batteries and includes a telescopic wand with a tripod and a plastic toolbox for convenient storage and transportation.

The XAR-P20 is ideal for gardeners and agronomists who need to measure PPFD for plant growth and development. The scan mode allows users to quickly average PAR readings over an area, which is particularly useful for measuring incident PPFD on plant canopies in outdoor environments or in greenhouses and growth chambers. The meter can also be used to measure reflected or under-canopy (transmitted) PPFD in the same environments.

In summary, the Santacary XAR-P20 Quantum PAR light meter is a versatile and accurate instrument that provides a variety of features to meet the needs of gardeners, agronomists, and other professionals who require precise PAR measurements for their applications.

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