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Understand UVA/UVB_RESPONSIVITY #6

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coelner opened this issue Feb 25, 2019 · 2 comments
Open

Understand UVA/UVB_RESPONSIVITY #6

coelner opened this issue Feb 25, 2019 · 2 comments

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@coelner
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coelner commented Feb 25, 2019

const float UVA_RESPONSIVITY_100MS_UNCOVERED = 0.001111;
const float UVB_RESPONSIVITY_100MS_UNCOVERED = 0.00125;
const float UVA_RESPONSIVITY[NUM_INTEGRATION_TIMES] =
{
UVA_RESPONSIVITY_100MS_UNCOVERED / 0.5016286645, // 50ms
UVA_RESPONSIVITY_100MS_UNCOVERED, // 100ms
UVA_RESPONSIVITY_100MS_UNCOVERED / 2.039087948, // 200ms
UVA_RESPONSIVITY_100MS_UNCOVERED / 3.781758958, // 400ms
UVA_RESPONSIVITY_100MS_UNCOVERED / 7.371335505 // 800ms
};
const float UVB_RESPONSIVITY[NUM_INTEGRATION_TIMES] =
{
UVB_RESPONSIVITY_100MS_UNCOVERED / 0.5016286645, // 50ms
UVB_RESPONSIVITY_100MS_UNCOVERED, // 100ms
UVB_RESPONSIVITY_100MS_UNCOVERED / 2.039087948, // 200ms
UVB_RESPONSIVITY_100MS_UNCOVERED / 3.781758958, // 400ms
UVB_RESPONSIVITY_100MS_UNCOVERED / 7.371335505 // 800ms
};

How did you get there? I understand that you calculate a factor to get the normalized value at 100ms, but why are those values not multiple of 2?
The datasheets mentions this:
2019-02-25 09-45-49
Do you know why the UVA_resp and UVB_resp differs from the textual value at the end? No teflon but a diffusor applied?


The datasheet list those values? Do you know what the mean? Are those values only for calibrate this sensor against the other ones?
2019-02-25 09-37-52

@bagges
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bagges commented Jan 3, 2023

Did you find this out? I use a 0.25mm teflon diffuser and want to know how to adapt the code.

@coelner
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coelner commented Jan 5, 2023

Sorry, I didn't.

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