[time-nuts] LPRO Pressure Sensitivity

[bg at lysator.liu.se]

Hi Bob,

Not that its an elaborate treatment, but...

"While the RFS-IIF may be operated in air, it achieves its best
performance in vacuum which eliminates barometric sensitivity.All other
environmental sensitivities (temperature, voltage, etc.) are
negligible."

above is from

   http://optoelectronics.perkinelmer.com/Catalog/Product.aspx?ProductID=RFS-IIF

But chances that these surface at the surplus market are pretty slim... ;-(

--

   Björn

>From the
> Hi
>
> Yes indeed.
>
> There really isn't a lot of data out there on pressure on rubidiums. Of
> course we don't talk about it a lot on our data sheets either ...
>
> If you accept that a normal day might have a 100 millibar change,  That
> changes the frequency 10 ppt, if the guess is right. At 10X that level it
> would be as significant as temperature on a good unit. If it was that big
> it should get a lot more attention ...
>
> Bob
>
>
> On Jan 21, 2010, at 4:53 AM, Magnus Danielson wrote:
>
>> Bob Camp wrote:
>>> Hi
>>> Has anybody taken any data on LPRO's to see what their pressure
>>> sensitivity is? I'm guessing it's  ~ 0.1 ppt / millibar. That's only a
>>> guess backed up by no data at all ....
>>
>> Do you mean 1E-13 per millibar? (I am only guessing)
>>
>> Cheers,
>> Magnus
>>
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