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Author Topic: New style passive shield  (Read 1044 times)

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Offline jerryg

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Re: New style passive shield
« Reply #15 on: August 07, 2018, 10:21:52 PM »
As i recall the 75 humidity is 1.8% and the 15 is 2% and from using both sensors the 75 is a little more accurate when the humidity is low by about 2%. The 15 tends to run a couple percent wetter.

Offline niko

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Re: New style passive shield
« Reply #16 on: August 07, 2018, 10:48:18 PM »
Gotcha, I was looking at temps  :roll:

Offline jerryg

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Re: New style passive shield
« Reply #17 on: August 07, 2018, 11:23:43 PM »
SHT15   High-End   2   0.3

Offline jerryg

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Re: New style passive shield
« Reply #18 on: August 07, 2018, 11:25:17 PM »
SHT75   High-End   1.8   0.3

Offline jerryg

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Re: New style passive shield
« Reply #19 on: August 07, 2018, 11:26:52 PM »
Really not much but like i said the low end performance of the 75 is better than the 15 and the response time is a little better too.

Offline niko

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Re: New style passive shield
« Reply #20 on: August 07, 2018, 11:29:23 PM »
It's apparently the same chip  :?

Offline jerryg

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Re: New style passive shield
« Reply #21 on: August 08, 2018, 01:35:18 AM »
There is a difference in the chips, the 15 is smd style with connection on the side of the housing as well as underneath and the 75 only has the connections on the bottom of the chip so the board it is mounted on is very small and just fits the board. Why the tad better humidity specs is any ones guess, hard to figure .2% difference lol.

Offline niko

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Re: New style passive shield
« Reply #22 on: August 08, 2018, 02:24:52 AM »
I was referring to the silicon itself.

Offline jerryg

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Re: New style passive shield
« Reply #23 on: August 08, 2018, 02:43:26 PM »
Ok on that i don't know how you find .2%, maybe they cull the better speced ones, no they have different mounting cases, so who knows lol.

Offline niko

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Re: New style passive shield
« Reply #24 on: August 09, 2018, 01:16:08 AM »
Speaking as someone who has been part of the creation of many semi datasheets, I would say you have a lot of faith in a pretty loosey goosey datasheet. Nevertheless it will be very interesting to see the results of your test  :D

Offline jerryg

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Re: New style passive shield
« Reply #25 on: August 09, 2018, 02:42:47 AM »
Yeah a data sheet is only as good as the people preparing it and how good the test for specs was. Also makes you wonder how tightly controlled is the manufacturing process and how much sampling of product is done to insure the specs are met.