Apogee DLI Meters
Research grade spot measurements of PPFD, DLI and photoperiod
PAR, Daily Light Integral, and Photoperiod Meters
The Apogee’s DLI meters can do spot measurements of PPFD, while also recording daily light integral (DLI) and photoperiod with only one handheld instrument.
Three Models
- DLI-400: for measuring 400-700 nm only in sunlight and under some broadband light sources.
- DLI-500:Â Full-spectrum is accurate for measuring 400-700 nm under all light sources including LEDs.
- DLI-600:Â ePAR is accurate for measuring the newly discovered extended PAR (ePAR) 400-750 nm range under all light sources.
The Apogee PAR, Daily Light Integral, and Photoperiod Meters can take instant readings of PAR or ePAR, whilst automatically recording the daily light integral (DLI) as total photons in mols, and hours of light (photoperiod in 0.1 hours) for upto 99 days.
This stored data can then be accessed via the button on the device, or the DLI, photoperiod, and 30 minute PPFD averages can be downloaded as CSV files via a USB-C cable to a computer.
Designed to fit a standard tripod fitting, these meters can be installed in many situations for accurate, long term measurement of growing conditions.
Three Models
- DLI-400: for measuring 400-700 nm only in sunlight and under some broadband light sources.
- DLI-500:Â Full-spectrum is accurate for measuring 400-700 nm under all light sources including LEDs.
- DLI-600: ePAR is accurate for measuring the newly discovered extended PAR (ePAR) 400-750 nm range under all light sources
Full technical specifications can be found on the Apogee Instruments Website
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Apogee Spectroradiometers
