[time-nuts] Making a 10811 better

[J. Forster]

I don't know. There was a very long thread on Tekscopes2, but I didn't
follow it as I have some of the real stuff and my probe is not leaking.

Best,

-John

==============


> Howsabout HFC-236fa - very similar properties to R114 but not banned.
>
> Dave
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Jim Lux
> Sent: 20 September 2011 22:38
> To: time-nuts at febo.com
> Subject: Re: [time-nuts] Making a 10811 better
>
> On 9/20/11 12:46 PM, J. Forster wrote:
>> Likely one of the Freons (TM) or Sulphur Hexafluoride.
>>
>> Tektronix used a Freon in their 40 KV High Voltage probes. The Vapor
>> pressure of some of those compounds is low at 70F, but they do have to
>> be sealed.
>>
>> Unfortunately, virtually all Freon useage has been banned by the EPA
>> (they are said to be "greenhouse gases") and the stuff in now almost
>> unobtanium.
>>
>> -John
>>
>
>
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