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Thread: Laser Power Meter < 2 W

  1. #1
    Join Date
    Sep 2010
    Location
    Utrecht The Netherlands
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    721

    Default Laser Power Meter < 2 W

    Hi, i am looking for a price sensitive, read low budget, laser power meter up to 2 Watt.

    Anyone planning to replace his model for one capable of higher power handling, hope to hear from you.

    Michel
    Utrecht
    Netherlands

  2. #2
    Join Date
    Nov 2010
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    The Netherlands
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    Default

    Quote Originally Posted by michelrietveld View Post
    Hi, i am looking for a price sensitive, read low budget, laser power meter up to 2 Watt.

    Anyone planning to replace his model for one capable of higher power handling, hope to hear from you.

    Michel
    Utrecht
    Netherlands
    Het mate
    I know one for 100 dollar, brand new. Goes to 2w.
    Problem is that they are not always on stock.
    I am on my iphone now but when im home i will send you the linky
    I cant remember if it included shipping though.
    If i forgot at 18:00 pm me, i have a bad memory.
    You are unique! Just like everyone else...
    Mum: What do you want for breakfast? Me: Lasers Ofcource!

  3. #3
    Join Date
    Sep 2010
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    Utrecht The Netherlands
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    Default

    thanks, looking forward to it.

    Michel

  4. #4
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    Jun 2010
    Location
    Australia
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    Default

    http://www.radiantelectronics.org/sh...&product_id=52

    I have one, get them when they are in stock which is not often and they sell like hot cakes. They don't back order....

    Only issue I have found is this unit chews through (9V) batteries if left on for extended periods, being LED display.
    This space for rent.

  5. #5
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    Sep 2010
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    Utrecht The Netherlands
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    Default

    thanks, will take a look.

    i know you can get a ac to dc converter with a plug that replaces the 9v battery so you can run it on ac instead of battery. local electro store.

  6. #6
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    Sep 2010
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    Utrecht The Netherlands
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    Default

    looks great but "out of stock", sent them an e-mail asking when it would be availlable again.

  7. #7
    Join Date
    Jul 2007
    Location
    west sussex uk
    Posts
    2,279

    Default build your own

    diy ,build one yourself i did works great look back at my past threads
    When God said “Let there be light” he surely must have meant perfectly coherent light.

  8. #8
    Join Date
    Dec 2008
    Location
    Canada
    Posts
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    Default

    Yeah dnar... I had one in my hands a while ago..
    They suck the life out of 9Volt batteries at >250mA
    current draw.

    It takes quite a long time to stabilize to a power reading.
    If you test a 1000mW Laser it takes about 40 seconds to
    get to 950mW then about another 30 seconds to get to 1000mW.

    We also found that the Alpha is probably calibrated at 100mW.
    That was the only power that it was accurate at. Near 1200mW
    we saw errors of +136mW. It was always over reporting above
    100mW and under reporting under 100mW.
    Still not bad for $100.00 built.

    The other thing we didn't like was that you could not Zero the
    meter after a few tests. The zeroing knob became useless.

    It also does not have Peak Detection. Probably not useful anyway
    since the response is so slow it would no doubt miss the Peak.

    We will be getting a hold of that same Alpha again and will be
    developing a Data Logging Interface ad-on that can be used on
    our 5Watt LaserBee (that we sell on eBay as of today).. the "nospin"
    5Watt LPM and the Alpha.

    Like I said the Alpha is worth the $100.00 they are asking for it.
    They are always out of stock since the launch... They must be
    building them in batches of 1....LOL

    Here is a Schematic of the Alpha circuit... You could build your
    own Alpha LPM for about $25.00....

    Click image for larger version. 

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    Jerry
    Last edited by lasersbee; 02-01-2011 at 06:54. Reason: Spelling errors
    See the LaserBee II and all other LaserBee LPM products here....
    All LaserBee Laser Power Meter Products

    New 3.2Watt RS232/USB LaserBee II LPM REVIEW


    Always in stock and ready to ship....
    Subsidary:-Pharma Electronic Solutions

  9. #9
    Join Date
    Jul 2007
    Location
    west sussex uk
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    2,279

    Default power meter

    hey jerry i also found the zero pot usless replaced it with a 10k multi turn pot been fine since, as for being accurate mine with in 5mw ,ie if i put it in front of one of my 640's it reads 145mw and if try on my 1050mw green i get 1055mw other than like you say its slow
    it makes a great hobby meter when funds dont allow for a better one. +- 5mw good enough for me
    i have had a laserbee before, highly recomended very good for the price
    the only reason i did not buy another was shipping and import costs took me over budget
    When God said “Let there be light” he surely must have meant perfectly coherent light.

  10. #10
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    Jun 2010
    Location
    Australia
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    3,730

    Default

    Ouch thats crude! And the Voltmeter -ve/zero is tied to an unregulated 9V supply? WTF?
    This space for rent.

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