[Halld-tracking-hw] Temperature sensor

[Beni Zihlmann]

Hi Yves,
what you propose looks ok to me. The only questions I have is what is 
the dimension
of the sensor and where you want to mount it?
The controller you propose is fine and you can use this for stand alone 
tests and measurements.
In the final installation at Jlab I strongly recommend to connect the 
sensor directly to an allan bradly
module and not use the controller.

cheers,
Beni


> Hi,
>
> I found some things on the omega site:
>
> The air temperature sensor: 
> http://www.omega.com/pptst/RTD-805_RTD-806.html
>
> The controller:
> http://www.omega.com/ppt/pptsc.asp?ref=CNI_SERIES
>
> I like this but the controller has only one input channel (if you want 
> rs232), so better use
>
> a thermocouple:
> http://www.omega.com/ppt/pptsc.asp?ref=IRCO_CHAL_P13R_P10R
>
> With a six channel controller:
> http://www.omega.com/guides/Results.html
>
> What do you think?
>
> Best regards,
>     Yves
>
>
>
>
>                           /--------------------------------
>                          /   Yves Van Haarlem
>        _--~~--_         /
>      /~/_|  |_\~\      /      Carnegie Mellon University
>     |____________|    /        Department of Physics
>     |[][][][][][]|:= /          Wean Hall room 8404
>   __| __         |__ \            Pittsburgh, PA 15213
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>   ~~              ~~       \-----------------------------------
>
> On Tue, 23 Feb 2010, Elliott Wolin wrote:
>
>> Hi,
>>
>> The PLC will support just about any type of termperature sensor.
>>
>> There are two main options:
>>
>> 1.  use a sensor that connects to some A-B module and purchase the 
>> module. Usually we use signal conditioners between the transducer and 
>> module to ensure ground isolation.  The module might contain an ADC 
>> or 4-20 mA input.
>>
>> 2.  use a temperature monitor/controller of some sort, then talk to 
>> the PLC via Ethernet/IP or RS232 or some other high-level protocol.  
>> We are doing this in the coil test, as it was the cheapest and most 
>> convenient option despite having to learn how to talk to the cryo 
>> termperature monitor via RS232.
>>
>> There may be other options, depending on the temperature range and 
>> the type of sensor.
>>
>> Let me know what you are thinking of purchasing before you purchase 
>> it.  Note that I only care about the final experiment control system, 
>> not what you do at your lab.
>>
>>                 Sincerely,
>>                     Elliott
>>
>>
>> ================================================================================ 
>>
>>
>>
>> Those raised in a morally relative or neutral environment will hold
>>             no truths to be self-evident.
>>
>> Elliott Wolin
>> Staff Physicist, Jefferson Lab
>> 12000 Jefferson Ave
>> Suite 8 MS 12A1
>> Newport News, VA 23606
>> 757-269-7365
>>
>> ================================================================================ 
>>
>>
>>
>>
>> Beni Zihlmann wrote:
>>> Hi Yves,
>>> I include Elliott in this mail because I would recommend to select a 
>>> temperature sensor that is
>>> supported by our Allen Bradly system we are going to use.
>>>
>>> cheers,
>>> Beni
>>>> Hi,
>>>>
>>>> As you might remember from last collaboration meeting, we would 
>>>> like to do some temperature dependent measurements with the CDC 
>>>> prototype. One important requirement is to be able to measure the 
>>>> temperature inside the gas volume of the CDC. We want to buy some 
>>>> temperature sensors in order to do this. Did somebody thought about 
>>>> what kind we will use in the Hall-D and if not could you give me 
>>>> some hints what to use?
>>>>
>>>> Thank you.
>>>>
>>>> Cheers,
>>>>     Yves
>>>>
>>>>
>>>>                           /--------------------------------
>>>>                          /   Yves Van Haarlem
>>>>        _--~~--_         /
>>>>      /~/_|  |_\~\      /      Carnegie Mellon University
>>>>     |____________|    /        Department of Physics
>>>>     |[][][][][][]|:= /          Wean Hall room 8404
>>>>   __| __         |__ \            Pittsburgh, PA 15213
>>>>  |  ||. |   ==   |  | \           USA
>>>> (|  ||__|   ==   |  |) \
>>>>  |  |[] []  ==   |  |   \           Tel.:   +1 412 268-6949
>>>>  |  |____________|  |    \                  +1 412 641-9252
>>>>  /__\            /__\     \          Fax.: +1 412 681-0648
>>>>   ~~              ~~       \-----------------------------------
>>>
>>>
>>


-- 
***********************************************************
Benedikt Zihlmann
TJNAF
HallD 12C/ F350
Suite 8
12000 Jefferson Av.
Newport News VA, 23606

tel: 757 269 5310 
fax: 757 269 6331                zihlmann at jlab.org
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