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Thermal Sensors: What does the minimum measurable power specification mean?

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Thermal Sensors: What does the minimum measurable power specification mean?

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At very low powers the zero offset becomes important. This means that the sensor reads some value even if there is no input into it. This can be because of external heat sources or the fact that the meter is not zeroed properly. Now say that there is a zero offset of 10 mW = 0.01 W. If we are reading a laser of 10 W, then the meter will read 10.01 W, an additional error of 0.1%, very small.

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