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Making the thing wasn't to hard but calibrating the optic and getting to sit just right in the little plastic bottle was a pain. There was was one guy on the OR bulbs by the end that was making them to sell

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  • 2 months later...

I sent the unit I had to a friend to get it calibrated and on the return trip USPS machine tried to eat it for lunch it was totally destroyed get this with out a store type of receipt the poste office will not reimburse you the $50 ii was insured for the post master here in Toledo said I should of packed in a better box that is when I told him it was one of there box's I paid for his reply was I don't know what to tell you so I am just screwed

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7 hours ago, rott said:

I sent the unit I had to a friend to get it calibrated and on the return trip USPS machine tried to eat it for lunch it was totally destroyed get this with out a store type of receipt the poste office will not reimburse you the $50 ii was insured for the post master here in Toledo said I should of packed in a better box that is when I told him it was one of there box's I paid for his reply was I don't know what to tell you so I am just screwed

That is BS!  But typical for a government office I guess.

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  • 3 years later...

Hi...Essentially a "PAR" (Quantum meter) is only a photodiode and filters.When building one the hardest thing would adjust it.

Need to coordinate it to a known "genuine" meter. Second hardest thing is getting a blue upgraded photodiode since most are frail on the blue end as to reaction. Tragically the exploration truly went into the "lux" photodiode bend shape.

 

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On 1/13/2021 at 9:05 AM, ElleBlyth said:

Hi...Essentially a "PAR" (Quantum meter) is only a photodiode and filters.When building one the hardest thing would adjust it.

Need to coordinate it to a known "genuine" meter. Second hardest thing is getting a blue upgraded photodiode since most are frail on the blue end as to reaction. Tragically the exploration truly went into the "lux" photodiode bend shape.

 

Welcome to the forum, sounds like you have some knowledge about this!

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