Teltru Verses Condar Thermometers

[3fordasho]

With a cat stove it's pretty easy to keep it below 800F unless you get distracted. They will survive a few excursions past 1000f but you best recalibrate them afterwords.

Here's an email response I received from Teltru when I asked them about the longevity of their probe in a wood stove flue.

Dear Todd,


Thank you for contacting us.

We really appreciate you choosing our product and providing feedback. Unfortunately, a bimetal probe thermometer may not be suitable for monitoring temperature within a wood stove flue because of the temperatures. I caution you not to expose the thermometer to temperatures above 800F regularly because the sensor is made of 2 dissimilar metals that need to be able to expand and contract to work correctly. Exposure to temperatures above 800F and cooled will harden metals over a period of time so the accuracy will be degraded and the pointer will likely stop indicating. Because your thermometer is seeing extreme varied temperatures you should check your thermometer accuracy as often as you feel is necessary

 

[pen]

I'd say the follow up email should ask if they'd consider making one that can withstand higher temps. Maybe a 350-1500 version?

Considering the lack of many alternatives, I'd say they'd have a market. Especially if it reads faster and more accurately.

pen

 

[Todd]

I'd say the follow up email should ask if they'd consider making one that can withstand higher temps. Maybe a 350-1500 version?

Considering the lack of many alternatives, I'd say they'd have a market. Especially if it reads faster and more accurately.

pen

I was wondering the same thing and asked them in my original email but got no reply. So far this range seems to be about right for my stove. I could see where some other stoves would need a little higher range since they run hotter stacks.

 

[Todd]

I'd say the follow up email should ask if they'd consider making one that can withstand higher temps. Maybe a 350-1500 version?

Considering the lack of many alternatives, I'd say they'd have a market. Especially if it reads faster and more accurately.

pen

I was wondering the same thing and asked them in my original email but got no reply. So far this range seems to be about right for my stove. I could see where some other stoves would need a little higher range since they run hotter stacks.

Got another reply

Todd,


Sorry, we are unable to supply a thermometer that can be used at the higher temperatures because of the technical limitation of available materials. You are correct that a thermocouple is likely the best sensor to stand up to a higher heat and the wiring will need to protected from the heat. I would love to have the solution for you but currently we do not have one.

Thank you again for contacting us with you interest and the details of your application. I will keep your request on record just in case a more suitable product can be offered in the future.


Kind regards,
Yvonne

 

[pen]

drat :-/

pen

 

[woodmiser]

What we need is a thermocouple based thermometer all in one probe. Heck with miniaturization you know they could figure out how to have the electronics that reads the TC on the face. Just need a heat barrier of some sorts.