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CBR101 sensors
renatoa
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Posted on 03/16/2019 1:15 PM
Hi,

Tried a lot to find this info before starting a new thread, but no outcome...
Anyone knows what type are the Gene sensors ?
Measured them and don't show low resistance as a thermocouple but something in the 236 Ohms ballpark, at 25 C ambient.
Could this be a Pt sensor ?

Thank you for any hint !
 
JitterzZ
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Posted on 03/16/2019 1:18 PM
Parts list might give you your answer https://genecafeu...cafe-parts
 
renatoa
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Posted on 03/16/2019 1:30 PM
Nothing useful, been there...

"Replacement outlet/inlet temperature sensor for the Gene Cafe CBR-101."
 
JitterzZ
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Posted on 03/16/2019 1:36 PM
This thread suggests RTD https://coffeesno...fully.html
Also See this thread ("the one in the GC is a negative coefficient thermistor with a room temp resistance of about 1Megohm") https://coffeesno...ogger.html
Edited by JitterzZ on 03/16/2019 3:03 PM
 
renatoa
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Posted on 03/16/2019 1:51 PM
Yep, RTD, with negative temperature coefficient.
The previous measurement was faulty, they are in the 250K ballpark at ambient temperature and go down to 30-50k when a 300 C hot gun is aiming the heater assembly.
 
Mark McCornack
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Posted on 06/24/2020 9:36 PM
I believe it was the genecafeusa..com site that had troubleshooting guidance that said ambient was around 250kOhms. What they do not mention is that there is a "new" version (with blue cables ) incompatible with the "old" version (white cables).
The "old" one's are apparently no longer available, however if you are willing to shell out for a new main board, you could replace both. New board, new blue wire sensor.
I have an older unit (2007) and the only issue is this failed inlet temp sensor.
I can't get an answer from genecafeusa..com on this matter as what the electrical differences are between new and old sensors, so I'm stuck.
Anybody have any knowledge about this? Thanks..Mark
 
renatoa
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Posted on 06/25/2020 1:04 AM
Already posted a notice in the other thread about the "inlet" sensor.
 
Mark McCornack
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Posted on 06/25/2020 1:51 AM
Hi Renatoa. Sorry, but I?m new to this forum and I don?t understand your reply. Who already posted a notice in what other thread regarding ?inlet? sensor? Can you direct me?
Regards,
Mark
 
renatoa
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Posted on 06/25/2020 3:09 AM
Here:

https://forum.hom...post_71748
 
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