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APOGEE INSTRUMENTS, INC. |

721 WEST 1800 NORTH, LOGAN, UTAH 84321, USA

TEL: (435) 792-4700 | FAX: (435) 787-8268 | WEB: APOGEEINSTRUMENTS.COM

OWNER’S MANUAL

DAILY LIGHT INTEGRAL AND

PHOTOPERIOD METER

Models: DLI-400, DLI-500, and DLI-600

Rev: 31-Jan-2022

Содержание DLI-400

Страница 1: ...00 NORTH LOGAN UTAH 84321 USA TEL 435 792 4700 FAX 435 787 8268 WEB APOGEEINSTRUMENTS COM Copyright 2022 Apogee Instruments Inc OWNER S MANUAL DAILY LIGHT INTEGRAL AND PHOTOPERIOD METER Models DLI 400 DLI 500 and DLI 600 Rev 31 Jan 2022 ...

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Страница 3: ...the assessment of electrical and electronic products with respect to the restriction of hazardous substances Please be advised that based on the information available to us from our raw material suppliers the products manufactured by us do not contain as intentional additives any of the restricted materials including lead see note below mercury cadmium hexavalent chromium polybrominated biphenyls ...

Страница 4: ...range of 400 to 750 nm Zhen et al 2021 Apogee DLI meters are designed to measure either PAR models DLI 400 and DLI 500 or ePAR model DLI 600 The DLI 400 and DLI 500 both measure PAR however the DLI 500 is accurate under all light sources while the DLI 400 is a low cost option that is accurate under sunlight and broadband light sources only PAR and ePAR are often expressed as photosynthetic photon ...

Страница 5: ... for spectral differences between these models Model Targeted Measurement Meter Used For DLI 400 PAR Sunlight only DLI 500 PAR All lights DLI 600 ePAR All lights A DLI meter s model number and serial number are located on the bottom of the meter If the manufacturing date of a specific meter is required please contact Apogee Instruments with the serial number of the meter ...

Страница 6: ...onnectivity CSV file via USB C data transfer Stored Data Resolution PPFD 0 1 µmol m 2 s 1 when 1000 the screen will not display the decimal Stored Data Resolution DLI 0 1 mol m 2 day 1 when 1000 the screen will not display the decimal Stored Data Resolution Photoperiod 0 1 hours Housing ASA plastic Ingress Protection IP65 Operating Environment 10 to 60 C 0 to 100 relative humidity 40 to 70 C 0 to ...

Страница 7: ...od of Federer and Tanner 1966 was used to determine spectral errors based on the PPFD and ePPFD spectral weighting functions measured sensor spectral response and radiation source spectral outputs measured with a spectroradiometer This method calculates spectral error and does not consider calibration cosine or temperature errors 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 300 350 400 450 500 550 600 650 700 ...

Страница 8: ...Metal Halide 8 8 0 3 0 4 Mogul Base HPS 0 9 0 0 0 4 Dual ended HPS 6 8 0 1 0 1 CW LED 9 4 0 9 1 6 WW LED 7 8 0 2 1 0 Blue LED 442 nm 12 1 1 9 3 3 Cyan LED 501 nm 27 7 3 6 1 4 Green LED 529 nm 29 4 2 9 1 4 Amber LED 598 nm 2 0 0 8 1 0 Red LED 666 nm 55 8 2 7 1 0 Federer C A and C B Tanner 1966 Sensors for measuring light available for photosynthesis Ecology 47 654 657 ...

Страница 9: ...o the mean of replicate reference quantum sensors Directional or cosine response is defined as the measurement error at a specific angle of radiation incidence Error for Apogee DLI meter is approximately 5 at solar zenith 75 5 4 3 2 1 0 1 2 3 4 5 0 10 20 30 40 50 60 70 80 90 Difference Percent Solar Zenith Angle Degree DLI 400 DLI 500 and DLI 600 ...

Страница 10: ...ows the use of most commercially available camera mounts tripods and various stakes The DLI meter comes with a yellow soil stake for easy immediate deployment NOTE The meter is officially IP65 rated against incoming dust and water The meter is not rated for full immersion While some users have reported successful deployments underwater at shallow depths and short durations doing so may cause adver...

Страница 11: ...These measurements are averaged together and saved to internal memory as a single value representative of the 3 minute period When 24 hours of data have been accumulated a daily total Daily Light Integral is determined and saved to internal memory Photoperiod is the accumulated number of hours in a 24 hour period in which the averaged measurement was over 0 1 µmol m 2 s 1 Every 6 minutes of light ...

Страница 12: ...ws completely unthreaded 3 Install 2 AAA batteries into the bottom making note of the proper polarity marked next to each hole 4 Replace the bottom cap and press firmly into place The LCD screen should turn on If it does not check the battery orientation and try again 5 Using a small Phillips screwdriver tighten the two screws on the bottom cap by turning them until snug Note Do NOT over tighten t...

Страница 13: ...surement 2 Press the button one more time Three numbers will appear on the display shown in the photo The first number bottom left of the display indicates the day in which the data were collected 0 days ago is today 1 day ago was yesterday and so on The second and third numbers are the DLI and photoperiod in the top right and bottom right corners respectively 3 Press the button repeatedly to cycl...

Страница 14: ... Connect a USB C cable to the DLI meter and a computer Locate the meter titled DLI METER in file explorer as you would a thumb drive There will be three files in this drive ABOUT TXT This file contains calibration firmware and hardware information about your meter DLI CSV This four column file contains the completed day number days ago label DLI and photoperiod data up to 99 days MEAS CSV This two...

Страница 15: ...el the reset If you do want to reset the meter continue holding the button until the countdown reaches zero Note Resetting the meter will clear ALL previous data and begin new calculations beginning from that time The first day will last 24 hours or until the first hour of continuous darkness less than 0 1 mmol m 2 s 1 is detected whichever comes first All subsequent days are 24 hours long ...

Страница 16: ... app can be used to indicate the PPFD and ePPFD on a horizontal surface at any time of day at any location in the world It is most accurate when used near solar noon in spring and summer months where accuracy over multiple clear and unpolluted days is estimated to be 4 in all climates and locations around the world For best accuracy the sky must be completely clear as reflected radiation from clou...

Страница 17: ... are available one for quantum meters PPFD and one for pyranometers total shortwave radiation Clear Sky Calculator for quantum sensors Site data are input in blue cells in the middle of page and an estimate of PPFD is returned on right hand side of page ...

Страница 18: ...on Charts Apogee DLI meters are calibrated to measure PPFD or ePPFD in units of µmol m 2 s 1 Units other than photon flux density e g energy flux density illuminance may be required for certain applications It is possible to convert the PPFD or ePPFD value from a quantum sensor to other units but it requires spectral output of the radiation source of interest Conversion factors for common radiatio...

Страница 19: ...ion and shipping of suspected warranty items to our factory The warranty does not cover equipment that has been damaged due to the following conditions 1 Improper installation use or abuse 2 Operation of the instrument outside of its specified operating range such as use underwater 3 Natural occurrences such as lightning fire etc 4 Unauthorized modification 5 Improper or unauthorized repair Please...

Страница 20: ... is determined that your product is not covered under warranty you will be informed and given an estimated repair replacement cost PRODUCTS BEYOND THE WARRANTY PERIOD For issues with sensors beyond the warranty period please contact Apogee at techsupport apogeeinstruments com to discuss repair or replacement options OTHER TERMS The available remedy of defects under this warranty is for the repair ...

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