Re: [mh] Omnistat rc-80 temp sensor...

[Joel D. <jr...@io...>]

Greg-

You might try calling Alpha Technics and seeing if you can get
an "engineering sample".

Joel

On Tue, 8 Dec 2009, it would appear that Greg Moeller wrote:

> Thanks for the pic that'll help nicely for placement of the internal unit.
> I have already gotten a reply from HAI, very quick and informative.
> -----
>
> HAI uses a 10K "Curve A" type thermistor in HAI thermostats.  The part
> number of the thermistor is 14A1002-5.
> The curve can be viewed at the following link
> http://www.alphatechnicsonline.com/a_curve_main.php.
>
> -------------------
> I should be able to find it for a couple of bucks (still looking for an
> exact match for the unit.)
>
> I got the unit for $25 so spending a little time internalizing the
> sensor is worth it.  :)
>
> Greg
>
> Marc MERLIN wrote:
>> On Sun, Dec 06, 2009 at 05:09:21PM -0600, Joel Davidson wrote:
>>
>>> On Sun, 6 Dec 2009, it would appear that Greg Moeller wrote:
>>>
>>>
>>>> Marc MERLIN wrote:
>>>>
>>>>> On Sun, Dec 06, 2009 at 11:52:37AM -0600, Greg Moeller wrote:
>>>>>
>>>>>
>>>>>> I just bought an rc-80 off ebay and it seems to have been using an
>>>>>> external temp sensor (there's three wires coming off the back of the unit)
>>>>>> What would I buy to get an internal temp sensor again?
>>>>>>
>>>>>>
>>>>> Mmmh, really?
>>>>>
>>>>> Can you send a picture of your unit so that we can compare?
>>>>> (as far as I know the internal temp sensor is not supposed to be removed,
>>>>> unless it was unsoldered somehow).
>>>>>
>>>>> Marc
>>>>>
>>>>>
>>>> Here's a couple of pics of the unit.
>>>>
>>>> http://picasaweb.google.com/skywise/Rc80Thermostat#
>>>>
>>>    I just took a look at my RC80, and the 3 pads are empty where you
>>>    have the wires.  The temperature sensor is above the slot in the
>>>    pcb just to the left of the pads where your wires are.  I don't
>>>    recognize the sensor at all, so have no suggestions on a source.
>>>    As I mentioned in my other note your best bet might be HAI.  If you
>>>    can get a part number from them we ought to be able to find a source,
>>>    or else maybe you can buy the sensor directly from HAI.
>>>
>>>    Joel
>>>
>>
>> Here's a picture of mine, you'll see the stock temp sensor that's supposed
>> to be there.
>>
>> You will see on mine where the stock 2 wire temp sensor is.
>> http://marc.merlins.org/tmp/p1090351.jpg
>>
>> Greg, between you and me, a fully working RC-80 on Ebay is $50.
>> The fact that you got one without a temp sensor somehow is not right. The
>> amount of time and effort that may be required to make yours work may not be
>> worth it.
>>
>> If it were me, I would return it to the Ebay seller for a refund: a unit
>> without a temp sensor is a useless unit.
>>
>> Marc