Plant Lighting PPID/PPFD Testing

PPID-PPFD Complete Plant Photometric Test Solution

Plant Lighting PPID/PPFD Testing

With the rapid development of plant factories and vertical farming, LED plant lighting has become a key factor in improving crop yield and quality. Accurate evaluation of plant lighting luminaire light output characteristics is essential for optimizing light recipes and saving energy. This solution establishes a complete test system based on PPID (Photosynthetic Photon Intensity Distribution) and PPFD (Photosynthetic Photon Flux Density) to provide data support for R&D, quality inspection and agricultural applications of plant lighting products.

By combining high-precision goniophotometry with plant photometric metrics, this solution addresses the limitation of traditional photometric parameters in accurately evaluating plant lighting effects. Using GMS-5000, GMS-1890 or GMS-1690 goniophotometers with SPM-5000 high-precision spectrometer, the system measures full 3D spatial distribution of luminaires to obtain PPID data and export PPFD distribution maps at any distance. Accurate PPID measurement derives reliable PPFD data, helping LED manufacturers optimize luminaire light distribution design and growers select luminaires scientifically for optimal layout, achieving both energy saving and yield increase.

Key Features

PPID (Photosynthetic Photon Intensity Distribution) full-space measurement: unit µmol/s/sr, reflects spatial directivity; GMS-5000/GMS-1890/GMS-1690 goniophotometers for 3D spatial distribution
PPFD (Photosynthetic Photon Flux Density) precise derivation: export PPFD maps at any mounting distance from PPID data; unit µmol/m²/s, directly determines canopy photosynthesis rate
PPF (Photosynthetic Photon Flux) and PPE (Photosynthetic Photon Efficacy): total quantum output µmol/s and efficacy µmol/J; meets DLC, T/ZALI 0012-2023 requirements
SPM-5000 high-precision spectrometer: spatial spectral measurement with goniophotometer; supports 400-700nm PAR and far-red for plant lighting
Compliant with DLC, T/ZALI 0012-2023, CIE, ASABE standards; for plant factories, vertical farming, greenhouse supplemental lighting

Core Application Scenarios

LED Plant Lighting Manufacturers - Light Distribution Optimization & QC

With accurate PPID and PPFD measurement, LED manufacturers optimize luminaire light distribution for uniform effective canopy illumination; meet DLC, T/ZALI 0012-2023 certification for export and domestic QC.

Plant Factories & Vertical Farming - Luminaire Selection & Layout

PPFD distribution maps enable growers to select luminaires and plan mounting height and spacing for target canopy PPFD (seedling 100-300, vegetative 300-600, flowering 600-1000+ µmol/m²/s), balancing energy saving and yield.

Third-Party Testing - Certification & Standards Compliance

GMS goniophotometer with SPM-5000 spectrometer meets DLC, CIE, ASABE, T/ZALI 0012-2023 standards; outputs PPID, PPFD, PPF, PPE reports for product certification and market access.

Measurable parameters

PPID Photosynthetic Photon Intensity Distribution (µmol/s/sr)

PPFD Photosynthetic Photon Flux Density (µmol/m²/s)

PPF Photosynthetic Photon Flux (µmol/s)

PPE Photosynthetic Photon Efficacy (µmol/J)

Zonal PPF, vertical iso-PPFD, PPFD distance curve

Iso-PPFD curve, iso-PPI curve, effective average PPFD map

PRF far-red photon flux, R/B irradiance ratio

Chlorophyll-weighted flux, spatial average color, color inhomogeneity

Technical specifications

Core equipment: GMS-5000 full-space mirror goniophotometer, GMS-1890/GMS-1690 horizontal goniophotometers, with SPM-5000 high-precision array spectrometer;
PPID measurement: full 3D spatial photosynthetic photon intensity distribution, unit µmol/s/sr;
PPFD derivation: calculate PPFD maps at any mounting height/distance from PPID; iso-PPFD, vertical iso-PPFD, effective average PPFD;
Spectral extension: SPM-5000 measures 400-700nm PAR and 700-800nm far-red; DLC spectral and efficacy requirements.

Meet the standard requirements

DLC DesignLights Consortium plant lighting test requirements (PPF, PPID, spectral distribution, efficacy)
T/ZALI 0012-2023 LED luminaire efficacy for plant lighting (PPID and PPFD test methods)
CIE International Commission on Illumination photon metric standards
ASABE American Society of Agricultural and Biological Engineers standards
GB/T 32655-2016 Plant lighting LED terminology
GB/T 44473-2024 Plant lighting LED performance specification
GB/T 45177-2024 Plant factory light environment specification