Welcome to our first fixture test.

Today we are testing the new ISH X BAR mk1

Specifications:

  • 1920 x Samsung LM301H cri 80 SM bin
  • 32 x Samsung LH351H V2 Reds
  • 240w output
  • Dimmable from 20w-240w
  • IP65

This is 960 LM301H and 16 LH351H per Linear PCB

System Power is 240w output ran off a Meanwell HLG 240h 36B

The Bars are sealed with a polycarbonate diffuser over the LED. 

 X Bars

Test equipment used for measurements:

  • 1m Integral Sphere f(sphere testing)
  • Light Scout (PAR testing)
  • Asence tek Lighting Passport Spectrometer (spectrum analysis)
  • Spectrum Genius Software (spectrum analysis)
  • 2ft x 4ft silver mylar lined grow tent (environment testing)

 

Asence tex lighting passport

 

Scenario & Objectives

objective: confirmation of efficiency and output from lighting fixture

Steps

  1. Sphere test Lighting unit to ascertain PPF ,  Umol/J and lm/w
  2. In depth spectrum analysis with the lighting passport and spectrum genius
  3. Create PAR map for average PPFD figures. 
  4. Check spectrum against chlorophyll a & b / phytochrome pr & ppr

Testing:

Spectrum analysis completed at 18 inches as not to saturate spectrum analysis. 

Par Maps completed at 12 Inches. 

With each test we analyze the spectrum and data, from the overall PPFD and Umol/J to the individual weighted spectrums and their efficiency. 

Testing X BAR

 

Below are the results for each test variant. 

240w full power

X bar spectrum

Full Spectrum 400nm-700nm range
12 Inches 240w full power - x bar

  • PPFD high of 840.73 umol/m/s
  • Efficiency 65.82
  • 3.50 umol/m/s/W

 

Far Red 701nm-780nm
FAR RED 701nm-780nm

  • PPFD high 34.43 umol/m/s
  • Efficiency 49.88
  • 0.14 umol/m/s/W

 

Deep Red 600nm-700nm
Deep Red 600nm-700nm

  • PPFD high 376.51 umol/m/s
  • Efficiency 81.32
  • 1.56 umol/m/s/W

 

Green 500nm-599nm
Green 500nm-599nm

  • PPFD high 345.37 umol/m/s
  • Efficiency 78.15
  • 1.43 umol/m/s/W

 

Blue 400nm-499nm
Blue 400nm-499nm

  • PPFD high 118.75 umol/m/s
  • Efficiency 31.90
  • 0.49 umol/m/s/W

 

UV 380nm-399nm
UV 380nm-399nm

  • PPFD high 1.19 umol/m/s
  • Efficiency 1.98 
  • 0.008 umol/m/s/W

 

Additional Parameters
Additional Parameters inc. DLI CRI, K range

  • DLI 72.64 mol/m2/D over 24 hours 
  • Overall CRI 89
  • 3420 Kelvin Range 

     

    half power 120w

    X bar spectrum

    Full Spectrum 400nm-700nm
    400nm - 700nm

    • PPFD high 315.66 umol/m/s
    • Efficiency 63.40
    • 2.63 umol/m/s/W

    Far Red 701nm - 780nm
    701nm - 780nm

    • PPFD high 13.54 umol/m/s
    • Efficiency 49.28
    • 0.11 umol/m/s/W

    Deep Red 600nm - 700nm
    601nm - 700nm

    • PPFD high 139.45 umol/m/s
    • Efficiency 77.39
    • 1.16 umol/m/s/W

    Green 500nm - 599nm
    500nm - 599nm

    • PPFD high 132.41
    • Efficiency 76.79
    • 1.10 umol/m/s/W

    Blue 400nm - 499nm
    400nm - 499nm

    • PPFD high 43.77
    • Efficiency 30.13
    • 0.36 umol/m/s/W

    UV 380nm - 399nm

    • PPFD high 0.52
    • Efficiency 2.21
    • 0.00 umol/m/s/W

    Additional Parameters
    Additional parameters

    • DLI 27.27 mol/m2/D over 24 hours 
    • Overall CRI 86
    • 3294 Kelvin Range

     

    Chlorophyll a spectrum reference 

    chlorophyll a reference against x bar spectrum

    Chlorophyll b spectrum reference 

    Chlorophyll b reference against x bar spectrum

     

    PAR MAPS

    ISH X BAR PAR MAP

     

    Conclusion

    The ISH X BAR

    Fixture Efficacy - 3.1 umol/J

    Efficiency at 12 Inches from canopy

    Total PPFD output over 2ft x 4ft canopy - 47263

    Average of 945.26 PPFD across the 2ft x 4ft canopy

    PPFD per Watt is 2.83