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GPM-2000 Centric Rotating Reflector Goniophotometer


Product performance

○ The tested luminaire rotates around the mirror with an angle of (γ)±180°(or 0~360°),and the tested luminaire rotates 
   around itself with an angle of (C)±180°(or 0~360°)   . 
○ Using high level redirector made up by special metal fiber, no winding, intelligent startup and stop , keep stable rotating, 
   continuous testing  and low noise.
○ The accuracy of angle :0.1° , resolution of angle :0.01°. 
○ The accuracy of  photometric:standard class.
○ The tested data meets the international and national standard requirements. Test result can be output with IES,IDT,CEN,
   CIB,CSV.TM4,CIE files and directly used by design software like Dialux.

  • Product description
  • Products parameter
  • Products features
  • Working principle
  • Fulfill the standard
  • Scope of application

    GPM-2000 Goniophotometer is a highly intelligent light distribution performance testing system. Test optic path distance from 5m to 30m(adjustable), it can measure all types of lighting sources and luminaires,such as indoor and outdoor luminaires, roodway luminaires,and flood lights  with high accuracy.It can achievethe test of CIE C-γ、CIE B- β and CIE A-α. The tested results can be directly used by international lighting design software like Dialux.It meets and requirements of CIE and IESNA standards.

    GPM-3000分布光度计工作原理-1.jpg



    Measure luminous intensity data,luminous intensity distribution,zonal luminous flux,luminaires efficiency,luminance distribution,coefficient of utilization,luminance limitation curves,glare,maximum ratio of distance to height, equal illuminance diagrams, curves of luminaires vs lighting area, iso candela curve,efficient luminescence angle etc.It can also achieve the spatial color characteristics with specialized spectroradiometer.

    Measurement scheme

    图片1.png

    File output format 

    *.CIE CIE

    *.IES IESNA 

    *.IDT EULUMDAT

    *.CIB CIEBSE

    *.TM4 CIEBSE

    *.CEN DIN

    *.CSV EXCEL

    ......




    >Tested light can rotate around the reflecting mirror (γ) ± 180 ° ( or 0-360°) rotation, the measured light itself can be rotated (C) ± 180 ° (or 0-360 °)

    >Angular precision:0.1 degree,  resolution of driving angle:0.01 degree

    >Photometric test range

      Luminance:0.01lx-10000lx    Intensity:1cd-107cd(detector)

    >Photometric test precision:2%(standard illuminants)

    >Stray light:≤ 0.1%

    >Maximum size lamps and lanterns which can be tested

       Diameter:1400mm           Weight:40Kg

    >Working power supply 

       1)Supply voltage:AC 220V±5% (export product is designed as the customer’s requirement)

       2)Power frequency:50Hz/60Hz

       3)Power consumption:static 180VA,dynamic 650VA

    >Working environment required

       1)Working environment temperature:0~35℃

       2)Ideal temperature in normal test:25±2℃

       3)Relative humidity:less than 70%(no condensation, air-condition is suggested to install)

    >Main engine size and weight

      1)Size:length x width x height(4800mm×3000mm×4750mm)

      2)Weight:2000Kg

    >The tested data must meet the requirements of international and national standards, IESNA file format output can transfer other lighting and lamps and lanterns design software

    >RS-485 standard interface, convenient to connect with various micro computer, standard English/Chinese operator interface, meets the international requirements

    >Tested lamp position and the actual use state are the same, lamps working condition is unchanged

    >Special laser cross line aiming device, be convenient and accurate to install the tested lamps and lanterns


    The tested luminaire rotates around the mirror with an angle of (γ)±180°(or 0~360°),and the tested luminaire rotates around itself with an angle of (C)±180°(or 0~360°)   . 

    Using high level redirector made up by special metal fiber, no winding, intelligent startup and stop , keep stable rotating, continuous testing  and low noise.

    The accuracy of angle :0.1° , resolution of angle :0.01°. 

    The accuracy of  photometric:standard class.

    The tested data meets the international and national standard requirements. Test result can be output with IES,IDT,CEN,CIB,CSV.TM4,CIE files and directly used by design software like Dialux.


    GPM-3000分布光度计工作原理-1.jpg

    GPM-3000分布光度计工作原理.jpg

    CIE Pub. NO.70,“The Measurement of Absolute Luminous Intensity Distributions”

    CIE DIV.Ⅱ-TC10,“Photometry of lamps and lanterns ”

    IES LM-35-1989,“IES Approved Method for Photometric  Testing of Floodlights”

    IES LM-31-1995,“IES Approved Method for Photometric Testing of Roadway lamps and lanterns ”

    IES-1971(73-96),“IES Practical Guide to Photometry”

    GB/T 7002-1986,“photometric test of flood lamps and lanterns”

    GB/T 9467-1988,“photometric test of indoor lighting lamps and lanterns”

    GB/T 9468-1988,“photometric test of lamps and lanterns for street lighting”

    IES 61341 “Method of Measurement of Center Beam Intensity and Beam Angle(s) of Reflector Lamp”

    CIE Pub.NO.76,“Photometry-the CIE System of Physical Photometry”


    Such as Indoor and Outdoor luminaires, Street luminaires, Flood lamps, etc.


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