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{"id":7309754368159,"title":"DLI-600: Daily Light Integral and Photoperiod Meter (ePAR)","handle":"dli-600-daily-light-integral-and-photoperiod-meter-epar","description":"\u003ch5\u003eImportant Info\u003c\/h5\u003e\n\u003cp\u003eApogee's new DLI-600 meter is designed to measure photosynthetically active radiation (PAR) beyond the traditional 400–700 nm range. The DLI-600 measures the newly defined 400-750 nm ePAR radiation range, which has been shown to have extended photosynthetically active properties. In addition to measuring ePAR, the DLI-600 meter calculates daily light integral (DLI) and photoperiod. DLI refers to the total amount of PAR or ePAR incident on a plane in a 24-hour period, expressed in units of moles per square meter per day (mol m-2 d-1). Photoperiod is the total amount of time in which PAR or ePAR is incident on a plane during a 24-hour period and is expressed in units of hours (h). Both DLI and photoperiod influence plant growth and development, and they are often measured in greenhouses and growth chambers to aid in light management and decision making. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe DLI-600 meter has two different screen modes: stored data and live view data. In the stored data screen, it shows the DLI measurement, photoperiod, and which day the data was collected (up to 99 days ago). The live view data screen displays a running average of ePPFD from the last 2.5 seconds.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe DLI meters consist of a cast acrylic diffuser (filter), optical filter, photodiode, signal processing circuitry, and an LCD display mounted in an ASA plastic housing. DLI meters are designed for single or continuous measurements of PPFD or ePPFD; DLI; and photoperiod. The DLI meter uses a USB-C cable (included with the meter) to download the stored data as a CSV file to a computer.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/hoskin.ca\/pdf\/HS-DLI-400-500-600-spec-sheet.pdf\" target=\"_blank\"\u003e\u003cimg src=\"http:\/\/www.hoskin.ca\/images\/Download-More-Info.png\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cp\u003eCalibration Uncertainty\u003cbr\u003e± 5 %\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMeasurement Repeatability\u003cbr\u003eLess than 0.5 %\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMeasurement Range\u003cbr\u003e0 to 4000 µmol mˉ² sˉ¹\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eLong-term Drift\u003cbr\u003eLess than 2 % per year\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eField of View\u003cbr\u003e180˚\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSpectral Measurement Range(± 5 nm)\u003cbr\u003e383 to 757 nm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eDirectional (Cosine) Response\u003cbr\u003e± 5 % at 75˚ zenith angle\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTemperature Response\u003cbr\u003e-0.11 ± 0.04 % per C\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eResponse Time\u003cbr\u003e2.5 seconds\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMeasurement Frequency\u003cbr\u003e3 minutes\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eData Log Capacity\u003cbr\u003e99 days (DLI \u0026amp; Photoperiod), 10 days (30 min PPFD\/ePPFD averages)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eNon-linearity\u003cbr\u003eLess than 1 % (up to 4000 µmol mˉ² sˉ¹)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eStored Data Resolution (PPFD)\u003cbr\u003e0.1 µmol mˉ² sˉ¹ (when ≥ 1000, the screen will not display the decimal)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eStored Data Resolution (DLI)\u003cbr\u003e0.1 mol mˉ² dayˉ¹\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eStored Data Resolution (Photoperiod)\u003cbr\u003e0.1 hours\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eConnectivity\u003cbr\u003eCSV file via USB-C data transfer\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eADC Resolution\u003cbr\u003e24 bits\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOperating Environment\u003cbr\u003e-40 to 70 C; 0 to 100 % relative humidity\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eIngress Protection\u003cbr\u003eIP65\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMounting Compatibility\u003cbr\u003eBrass 1\/4-20 threaded mount\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBattery Life\u003cbr\u003eApproximately 6 months\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eDimensions\u003cbr\u003e1.91 W x 2.31 H x 0.93 D (inches)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMass\u003cbr\u003e67 g\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWarranty\u003cbr\u003e4 years against defects in materials and workmanship\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eManufactured\u003cbr\u003eMade in the USA\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eVideo\u003c\/h5\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/WEd8ZjD9zFM\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; 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