OPHIR FluxGage User Manual
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OPHIR FluxGage User Manual

Led luminaire measurement system
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LED Luminaire Measurement System User Manual

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Summary of Contents for OPHIR FluxGage

  • Page 1 FluxGage FluxGage ™ ™ LED Luminaire Measurement System User Manual...

  • Page 2: Table Of Contents

    Unpacking ........................9 Installation ........................10 PC and Software Installation ....................11 Uninstall ......................... 15 Using the FluxGage ........................ 16 Operating the FluxGage SW ....................17 Top banner ........................18 Control Parameters ....................... 19 Optimization Factors ..................... 20 Synchronized Measurement ..................21 Indicators ........................

  • Page 3: Acronyms

    1 Acronyms DUT – Device Under Test CCT – Correlated Color Temperature CRI – Color Rendering Index PPF - Photosynthetic Photon Flux PAR - Photosynthetically Active Radiation (PAR) Avogadro constant – 6.022*10 FluxGage User Manual...

  • Page 4: Introduction

    The FluxGage measures by collecting light using photovoltaic cells. Unlike an integrating sphere, the FluxGage does not rely on multiple reflections and its interior is black. Light from the DUT hits the interior walls of the FluxGage, gets absorbed and nearly no light bounces back again.

  • Page 5: Specifications

    Weight [kg] 20KG Standards CE, ROHS Interface Operation voltage 12v (power adapter is supplied) Accuracy Repeatability Total flux: -Absolute calibration at Ophir ±6% ±1% -Referenced to customers’ laboratory for a particular type of luminaire ±2% ±1% Chromaticity accuracy [Duv] ±0.002 ±0.0005 CCT accuracy ±1.5%...
  • Page 6 Weight [kg] 20KG Standards CE, ROHS Interface Operation voltage 12v (power adapter is supplied) Accuracy Repeatability Total flux: -Absolute calibration at Ophir ±6% ±1% -Referenced to customers’ laboratory for a particular type of luminaire ±2% ±1% Chromaticity accuracy [Duv] ±0.002 ±0.0005 CCT accuracy ±1.5%...
  • Page 7 Weight [kg] 20KG Standards CE, ROHS Interface Operation voltage 12v (power adapter is supplied) Accuracy Repeatability Total flux: -Absolute calibration at Ophir ±6% ±1% -Referenced to customers’ laboratory for a particular type of luminaire ±2% ±1% Chromaticity accuracy [Duv] ±0.002 ±0.0005 CCT accuracy ±1.5%...
  • Page 8 Weight [kg] 20KG Standards CE, ROHS Interface Operation voltage 12v (power adapter is supplied) Accuracy Repeatability Total flux: -Absolute calibration at Ophir ±6% ±1% -Referenced to customers’ laboratory for a particular type of luminaire ±2% ±1% Chromaticity accuracy [Duv] ±0.002 ±0.0005 CCT accuracy ±1.5%...

  • Page 9: Mechanical And Electrical Installation

    Place the FluxGage box on a flat surface.  Open the box and remove the top piece of foam.  Remove two side pieces of foam.  Reach into the clearance left by the two pieces and lift the FluxGage from the box. FluxGage User Manual...

  • Page 10: Installation

    The inner surfaces can be cleaned with a damp cloth or clean compressed air. Solvents should not be used.  Warning. The FluxGage is a heavy object which can cause injury or death if falls on a person. Take proper precautions. FluxGage User Manual...

  • Page 11: Pc And Software Installation

    5 PC and Software Installation Select 32bit or 64bit according to the operating system. Install: Double click on setup.exe Install start : FluxGage User Manual...
  • Page 12 Click on [Next >>] FluxGage User Manual...
  • Page 13 Click on [Next >>] FluxGage User Manual...
  • Page 14 Install in progress FluxGage User Manual...

  • Page 15: Uninstall

    Click on [Finish] 5.1 Uninstall To uninstall go to: Control Panel > Programs > Programs and Features. Select FluxGage and [Uninstall] FluxGage User Manual...

  • Page 16: Using The Fluxgage

    6 Using the FluxGage The DUT should be placed over the opening of the FluxGage and centered. The DUT can be supported by an adapter plate secured to top surface of the FluxGage using the ¼-20 threads. The adapter plate should have an opening cut out to allow light from the DUT to reach the FluxGage.

  • Page 17: Operating The Fluxgage Sw

    7 Operating the FluxGage SW FluxGage User Manual...

  • Page 18: Top Banner

    Spectrum – View and save spectrum in [W/nm] PAR – Detailed PAR (Photosynthetically Active Radiation) screen Logging – Data logging screen Calibration Open the calibration screen. Help Click on About to see information on the hardware and software versions. FluxGage User Manual...

  • Page 19: Control Parameters

    DUT. 7.2.2 Background ‘Background’ should be done after Autoset with the DUT in place and turned off. The FluxGage stores the background value of the spectrometer and later subtracts it from the actual measurement.

  • Page 20: Optimization Factors

    7.3 Optimization Factors Optimization factors can improve the accuracy of the total flux measurement. The performance of the FluxGage system was optically modeled for various luminaire sizes and illumination beam angles, and optimization factors adjust the total flux measurement accordingly.

  • Page 21: Synchronized Measurement

    The FluxGage has an internal temperature sensor and 4 fans which turn on automatically to keep a stable temperature. If for some reason, such as failure of the fans, the FluxGage is overheating, the temperature warning indicator will turn on. In this case, the FluxGage should be turned off and the DUT should be removed to allow the FluxGage to cool down.
  • Page 22 Chromaticity coordinates in the CIE 1931 color space 7.6.6 Percent Flicker and flicker factor FluxGage has a fast photodiode detector which samples at 3000Hz. The percent flicker and flicker factor calculations are explained in the following figure FluxGage User Manual...

  • Page 23: Flicker Screen

    Flicker percent after filtering at the bandwidth specified below Flicker index Flicker percent after filtering at the bandwidth specified below Flicker frequency Flicker frequency of the unfiltered signal Flicker Bandwidth User specified bandwidth for filtered flicker calculation FluxGage User Manual...

  • Page 24: Cri Screen

    7.8 CRI screen The CRI screen shows the individual CRI values R1-R15 and the average value CRI. FluxGage User Manual...

  • Page 25: Cie 1931 Chromaticity

    7.9 CIE 1931 Chromaticity The CIE 1931 chromaticity window shows the chromaticity coordinates. FluxGage User Manual...

  • Page 26: Spectrum Screen

    7.10 Spectrum Screen The spectrum is displayed from 400nm to 800mn in [W/nm] units. The spectrum can be saved to a text file by clicking over the disk icon. FluxGage User Manual...

  • Page 27: Par Screen

    7.11 PAR screen PAR is measured in [µmol/s], also called PPF units. One [mol/s] is defined as Avogadro’s number of photons per second. There are 3 user defined wavelength ranges, and the PAR is measured and displayed for each. FluxGage User Manual...

  • Page 28: Data Logger

    Data logger allows saving data over a time period. Reference Enter user reference data Model Enter tested light source model or other reference information Save directory Select directory for log file Time Record Select duration for logging Data point interval Select time between data point FluxGage User Manual...
  • Page 29 Stop Stop logging Play/resume Start or resume logging Pause Pause logging Open last log Open the recent log file in the selected folder FluxGage User Manual...

  • Page 30: Data Save

    This screen is used to save the current measurement data to a tab delimited test file. Reference Enter user reference data Model Enter tested light source model or other reference information Save Select folder and file name FluxGage User Manual...

  • Page 31: Save To Excel

    7.14 Save to Excel Enter operator and product details for reference. Click on the folder icon in the 'file name' part of the screen Select an existing file or type a new file name Click on 'add to excel' FluxGage User Manual...

  • Page 32: Report Generator

    Enter the luminaire ratings: flux, power, voltage, beam angle, CCT. Enter actual electrical parameters as measured: power, power factor. Click on the disk icon to generate and save the report. The report contains all the above information, measure data and calculated efficacy: FluxGage User Manual...
  • Page 33 FluxGage User Manual...
  • Page 34 FluxGage User Manual...
  • Page 35 FluxGage User Manual...

  • Page 36: Calibration

    For this calibration an LED calibration source is needed. A tungsten lamp cannot be used because its IR radiation is detected by the solar panels but not by the spectrometer. Follow these steps:  To calibrate the FluxGage click ‘Calibration’ on the top banner.  Position the calibration source over the FluxGage. ...

  • Page 37: Calibration Of The Total Flux Measurement

    This calibration can be done using an LED source with a known total luminous flux without calibrating the spectrometer. Follow these steps:  To calibrate the FluxGage click ‘Calibration’ on the top banner.  Position the calibration source over the FluxGage. ...

  • Page 38: Back Up Calibration

    The backup calibration can be overwritten by pressing ‘Overwrite Backup Value’. This should be done when the calibration is done with an Ophir certified calibration unit. FluxGage User Manual Rev 1.02-3/01.01.18/ds – updated sections 7.8, 24 July, 2018 7.9, 7.14, 7.15 (see details in email)

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