Re: [foxboro] SRD991 on 8.3

I have faced such problem at one of refineries where I worked before. At 
this site our SRDs were connected to FBM246. At our site this problem 
occurred whenever the device temperature went above 50 deg C.
This occurred at our site mostly due to high ambient temperature and when 
the heat insulation on the valve body was removed for some reason. The 
problem solved only by protecting the SRD991 from close contact with heat 
radianting bodies and direct fall of sunlight in summer.


Rgds,
Ali Ahmed Zahidi
Sr. Design & Application Engineer
Intech Process Automation, Inc.




----- Original Message ----- 
From: "Scott, Joe" <JScott2@xxxxxxxxxxx>
To: <foxboro@xxxxxxxxxxxxx>
Sent: Tuesday, November 13, 2007 6:11 PM
Subject: [foxboro] SRD991 on 8.3


> Hi List,
>
>
> Just wanted to see if anyone is having the same problem that I'm seeing
> with the SRD991 intelligent positioner falling offline at 8.3. We have
> the SRD991 configured
>
> Them to an FBM 43 in digital. They have fallen offline a couple of time
> with no pattern. When I go back into System Manger they come right back
> online just like normal.
>
> If you seen this or have any suggestions please send me an email
> jrscott@xxxxxxxxxxxx
>
>
>
> Thanks,
>
>
>
> Joe R Scott
>
> ATI Alldyne
>
> 1-256-721-4190
>
>
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