Plant Lighting Case Study: PPFD and Spectrum Measurement for LED Light Recipes with PG200N

The Challenge: Matching Light Recipes to Different Plants and Plant Factory Setups

Beyond light quantity, light quality, and photoperiod, Photosynthetic Photon Flux Density (PPFD) is especially important for controlling plant growth. PPFD describes how many photons within 400–700 nm reach a defined area in one second.

Plants come in many species and categories, each with different PPFD requirements, and light intensity affects plants differently across wavelengths.

Plant factories add further complexity. Because different types of plants are equipped with different types of light sources, combining the factory setup with the right light source becomes complicated. Under these conditions, being able to see the quality of a light source and the spectral changes across bands directly allows the artificial light source to be adjusted in time.

Spectral and PPFD measurement of plant growth lighting

Measuring PPFD and Spectrum on Site with the PG200N

To address this need, the PG200N Spectral PAR Meter provides a range of parameters for monitoring plant lighting, including PPFD and PFD. It can measure PPFD values across different band ranges, helping users understand the light conditions affecting plant growth and adjust the light source to support plant quality.

The PG200N also features a detachable sensor head designed for the measurement environment, so it can be used upright, lying flat, stand-alone, or even synchronized across multiple light sources.

For plant factories, where each plant type may use a different light source, a handheld spectrometer that offers different measurement methods can overcome distance and space constraints, improving measurement efficiency and flexibility.

Measurement with the PG200N detachable sensor head

Supporting Light Recipe Control in Plant Growth

By measuring PPFD and the spectral changes of different bands, lighting teams can adjust artificial light sources in time. This can help match the light recipe to the requirements of each plant species and category.

Because the light source shapes how plants grow, controlling it successfully is closely tied to controlling how plants develop. Detecting light quality is therefore a practical step toward helping plants grow effectively and healthily under LED light.

Summary

Light quantity, light quality, and photoperiod all shape how plants grow, and PPFD is a key parameter for controlling it. The PG200N Spectral PAR Meter gives LED plant lighting teams PPFD and PFD readings across band ranges, with a detachable sensor head for flexible measurement setups. With measured PPFD and spectral data on hand, plant lighting teams can move from designing a light recipe toward adjusting it based on what the light source actually delivers.

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• What Is a Grow Light? How It Works and Different from Regular Bulbs?
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