[dsg-hallb_rich] [EXTERNAL] Re: RICH Humidity sensors

[Marco Contalbrigo]

Dear Tyler,
indeed we discussed this at the RICH meeting today, and agree
that having all values at zero sounds suspicious. A check
would be worth. Bests, Marco.

On Fri, 2 Dec 2022, Marco Mirazita via dsg-hallb_rich wrote:

> Hi Tyler,
> in principle it is ok to have zero RH inside the detector.
> But with the compressor off the humidity inside the electronic panel cannot 
> be zero because that volume is basically open to the outside air. I would 
> expect to see values well above few percent, like for the other module.
> And the fact that the sensors read zero in the electronic panel makes 
> suspicious also the zero readout inside the detector.
> Could you please check what is going on?
> Thank you,
> Marco
>
>
> Il 2022-12-01 18:45 Tyler Lemon via dsg-hallb_rich ha scritto:
>>  Valery,
>>
>>  The humidity in both RICH sectors in the electronic panel and
>>  nitrogen panel is consistent with what it's been in the past.
>>
>>  The humidity in the detectors is so low, the sensors cannot read
>>  anything. This is why most of them are 0% RH or very close to zero.
>>
>>   -Tyler
>>
>>  -------------------------
>>
>>  From: Valery Kubarovsky <vpk at jlab.org>
>>  Sent: Thursday, December 1, 2022 12:31 PM
>>  To: Tyler Lemon <tlemon at jlab.org>
>>  Cc: Valery Kubarovsky <vpk at jlab.org>
>>  Subject: RICH Humidity sensors
>>
>>  Hi Tyler,
>>
>>  The RICH detector is off now due to the compressor maintenance.
>>  Could you please take a look to the humidity sensors in sector 4
>>  (electronic panel)
>>  and sector 1 (nitrogen volume)?
>>
>>  Thanks,
>>  Valery
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