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Old 09/08/2018, 04:08 PM   #1
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Location: parma ohio
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neptune par meter

I just bought Neptune par meter.are they accurate for leds or are the par meters off when reading leds.

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Old 09/10/2018, 12:19 PM   #2
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Originally Posted by clevebill View Post
I just bought Neptune par meter.are they accurate for leds or are the par meters off when reading leds.
I belive they use the older sensor. that being said most PAR meters underestimate any light source that is predominantly blue.

Greg Carroll
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Old 09/10/2018, 01:29 PM   #3
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I believe I read some place that Neptune uses an Apogee 210.
If you look at the chart, the 210 is considered an original, so use that graph line.
I have the new SQ-520. It reads the blue spectrum better.

BRS did some testing.

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I thought I did once, but I was wrong"

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