[dsg-svt] SVT coolant flow meter failure at 100% solenoid field

[Brian Eng]

So much for it being a magnetic field issue then since the field should be lower there.

As far as I can tell there isn't any information available on selection criteria, but going by the specs I don't see anything unreasonable about it (Omega FLR6302D).

The manual does recommend that there should be a filter installed, but that might just be a red herring like the field issue.

If I recall correctly the signal/power cable is routed differently for the sensors (the bottom one runs on the downstream side of the cart), maybe that was the issue and not the meter itself?

> On Nov 9, 2017, at 9:10 AM, Yuri Gotra <gotra at jlab.org> wrote:
> 
> Brian,
> 
> No, the outlet one is lower by 1 foot and is further away from the solenoid. Could you please pull up the HBI documentation on selection of this model of the flow meter, re-check the specs and find out what could cause such failure. We need to figure out whether there is a safe place on the cart for normal operation of these flow meters. They could only be moved 2 feet back and 2 feet down if they stay on the cart. We could also consider a separate support cart for the chiller and the flow meters which would be located behind the CVT cart. Thank you
> 
> 
> On 11/8/17 9:11 PM, Brian Eng wrote:
>> Is the outlet flow meter the one that is closer to the bore?
>> 
>> Maybe it just need to be moved further away from the fringe field? Could either go upstream or closer to the floor.
>> 
>> Seems odd that only one of them failed, since they're identical models.