[Dsg-rich] RICH hardware interlock limits

[Marco Mirazita]

Hi Tyler,
the interlock logic has been developed by George, is written in the 
attached document and described in the presentation done by Valery 
during the ERR review.
Preliminary limits for the cooling and nitrogen systems were discussed 
by S. Tomassini in the presentation made during the mid term review. 
Final limits, as well as position and numbers of the sensors, can only 
be determined after the cooling tests we are going to do during the 
assembly in the clean room.
Do you have already bought humidity and temperature sensors?
Best regards,
Marco


Il 2017-02-22 22:07 Tyler Lemon ha scritto:
> Hello Marco Mirazita and Marco Contalbrigo,
> 
> DSG has beendeveloping RICH cRIO hardware interlock program and we
> have questions regarding thresholds and interlock actions.
> 
> Attached is an Excel file with a small table listing parameters to be
> monitored for interlocks. Could you please complete the table with the
> answers to the questions below? If a parameter is unknown or will be
> determined later, it can be left blank.
> 
> 1.) What are the upper and lower limits for temperature and humidity?
> 
> 2.) How many temperature and humidity sensors are needed? We know from
> George's diagrams that RICH will have one nitrogen purge flow meter,
> one cooling air flow meter, and one pressure transducer. These items
> have already been filled out in the table.
> 
> 3.) What actions should be taken for each interlock? For instance,
> should HV be turned off before LV if internal temperature is too high?
> 
> 
> Best regards,
> 
> Tyler
> 
> 
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> Dsg-rich at jlab.org
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