[Dsg-mvt] Mass Flow Meter for MVT Test

[Marc McMullen]

Hi Bob,

I dropped off two MFCs (500 sccm (supply) and 1000 slm (exhaust)) at the 
gas shed this morning, with cables and a controller which is already set 
up on Ch. 7 and 8 to flow DC mix gas. Ch. 7 should be used for the 
supply flow (set to flow 133.3 sccm) . Ch.8 (set to flow 1 lpm) should 
be used for the exhaust flow measurement, in lieu of a MFM.

To start gas flow, you must select the Extended Display menu and scroll 
to the left (directional pad) until you reach the channel status of the 
channel you want to control and then toggle up or down (directional pad) 
to change the status to off or on. *The right directional arrow does not 
work*. Alternatively, you can use the All and On/Off buttons, as well.

Gas flow can be viewed in the user display menu. The MFCs have already 
been zeroed and each channel has the Gas Correction Factor for the 
mixture. Here is a link to the manual, pages 11-12 has the information 
on operating the controller.

Let me know if you have any questions,

-Marc

On 10/23/2018 9:09 AM, Marc McMullen wrote:
> Bob,
>
> We do not have any MFM, there may be some in the gas shed from the 
> CLAS 6 period. They would be the old MKS, and need the MKS-647 control 
> box (also in the gas shed). MVT does has a spare GE50a 500sccm MFC. 
> The control range is 2 to 100% full scale, so it should be able to 
> measure in the required range. How long would they do they need it?
>
> -Marc
>
> On 10/23/2018 8:11 AM, Robert Miller wrote:
>> Hi Marc,
>>
>> Do we have any flow meters that I can use for an MVT test?  I need to 
>> measure ~ 8 liters per hour.  The model that they are using is a 
>> SLA5860S; see attached.
>>
>> They are getting flow fluctuations due to wind gusts on their gas 
>> exhaust that trips off the detector.
>>
>> Thanks,
>> Bob
>
-- 
Marc McMullen
Detector Support Group
757-269-7738

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