Temperature measurements on new Pokit Pro
Just got my pokit pro, and thought I would do some testing while I am working at my desk.
I am trying to measure temperature and the reading is 28 celsius which surely must be off, since its winter in Sydney.
1) Where is the temperature sensor? Is it maybe measuring temp of internal battery after charging (though it doesn't feel warm to touch)?
2) What does it mean by int/ext? (I am guessing internal vs external)
3) How does one take external temp measurements?
4) Is temp calibrated from the factory, or is the expectation that I need to do it myself.
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I think you need to buy the NTC temperature probe to be able to measure external temperature.
I also always has the Pokit measures 28 celsius only so I think it is measuring the temperature inside the Pokit hence, internal.
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While on the subject of temperature measurements and logging: it would be nice to have some sort of y-axis values displayed on the log.
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The internal temperature sensor will react slowly to outside temperature (took about 10 minutes to go under 0 in my freezer @ -10C) so not that useful.
Has anyone tried the external NTC probe ? What is its nominal resistance at 25C ? Is it possible to calibrate for beta or just a single point offset ?
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I have that external probe, it has 10k at 25°C, so it seems to be an NTC 10K obviously.
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Has the official ntc probe got anything special to it? Iv got an Amazon 10k ntc and it reads OC in external yet has a good resistance reading.
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The NTC is in a plastic capsule and the wire is robust. It looks waterproof.
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Yep the external probe is a 10k NTC with a beta curve of B25/85=3435K nothing really magic about it
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