Mobile phones' ambient light sensor becomes LUX meter

Discussion in 'Test Kits, Controllers, Reactors and Dosers' started by jclaas, 22 May 2014.

  1. jclaas

    jclaas

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    I was thinking of many possible ways to measure the LUX intensity of a particular bulb regarding my aquariums. I was thinking that i will need to purchase or loan a LUX meter.

    I then thought of the preloaded Samsung application store called: Play Store. There i found it.

    [​IMG]

    I installed it on my mobile phone, It gave an error message: No light sensor.
    I installed it on my Samsung Galaxy Tab2, it gave no error message and i was happy.

    But what is this light sensor i wanted to know, what does it do and where is it?
    "An ambient light sensor is present to adapt the screen's brightness accordingly"
    It is to the left of the device ear piece.

    Now i opened the application again and i found a LUX of 1000 - 1500.

    I hope this help you with testing your LUX intensities .
     
    Last edited: 22 May 2014
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  3. Mewik

    Mewik

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    A PAR meter is what you want. I can see if a light is bright or not so lux is not to important to me, I guess it could be used to test how long your leds are actually lasting. It is how useful that light is that reefers need to know so a PAR meter app would be first prize. Would be cool if a PAR app was available for mobiles etc, I have no clue how a PAR tester works so I am not sure if it would be possible with the standard equipment on a mobile....would need to be submerged anyway I suppose so not sure on that either :p
     
  4. Nemos Janitor

    Nemos Janitor

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    Last edited by a moderator: 26 Nov 2015
  5. jclaas

    jclaas Thread Starter

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    My current information only advises me the optimal LUX measurement so i can not use a PAR meter - unles ofcourse i find the information on optimal PAR measurements.

    Please note i know a LUX meter will be beter for this and that is why i ordered one, but in a pinch this is what i used.
     
  6. dallasg

    dallasg Moderator MASA Contributor

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    there is a way to convert lux to par etc :)
     
  7. jclaas

    jclaas Thread Starter

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    Thanks for that info :).

    The sun was at 44000 LUX today at my garage window. I will be interested to see how this application compares to my LUX meter when it arrives in a few weeks time.
     
  8. dallasg

    dallasg Moderator MASA Contributor

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  9. jclaas

    jclaas Thread Starter

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    @dallasg , interesting to see the LUX of coolwhite compared to the sun. Big difference.

    A quik interpolation of the 44000LUX i found at my garage window into the PPF to Lux Reference Table is
    44000LUX*Sunlight 0.0185 = 814ppf
    814ppf*Cool White Fluourescent Lamps 74 = 60236LUX!
     
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