My DIGITAL Stovepipe thermometer build

[Adabiviak]

Does that linkage work? It seems like the length of the connecting rod would put too much oblique pressure on the vent rod, causing it to hang from friction (but that's with my stove - yours may work fine). I'm also guessing by the round driving wheel that it's only meant to close the vent (not open it)? Also, did you mill that gearbox yourself? That's crazy.

 

[WES999]

Does that linkage work? It seems like the length of the connecting rod would put too much oblique pressure on the vent rod, causing it to hang from friction (but that's with my stove - yours may work fine). I'm also guessing by the round driving wheel that it's only meant to close the vent (not open it)? Also, did you mill that gearbox yourself? That's crazy.

The linkage works fine, my air control moves pretty smoothly. You are correct it will only close the air, not open it.
The motor/gearbox is a Honeywell HVAC damper control, I added the shaft, wheel and solenoid.
Here is a short vid.
http://s1321.beta.photobucket.com/user/wes9996/media/CIMG3087_zpsb8791181.mp4.html?sort=3&o=2

 

[scooby074]

Excellent job! It is nice to have everything all in one enclosure, a lot neater than what I have. Nice build description. It does look like a tight fit, ever notice that there is always less room than you thought.

It is great that you were able to get the
PID's read higher than 400. Can thy read in rather than ?

I use the waterjet at work to cut out panels, makes things really easy. You might try a dremel tool with a cut off wheel or a hand held nibbler, a bit gentler than a saw.

Here is some info on magnets: http://www.mcmaster.com/#rare-earth-magnets/=lpai4z
some rear earth magnets are only good to 300 . Alnico magnets are good to 975.
The one I used is Master Magnetics #07270 , The TC is from http://www.ppe.com/
#WTCK-160. Works well.

Now some ideas for the upgrades:
Latching relay
Have the stove top PID turn on the blower on high temp alarm.
Have the flue temp PID automatically close the air control.

Still cant get it into *F. I found a set of instructions online that indicates that the Units parameter (SL6 i think) has been omitted. That jives with what Ive seen in practice.

Yeah its great to ge these PIds over 400. It opens up a whole lot more uses for these inexpensive controllers..

Thanks for the info on the magnets. I found one at Mcmaster that looks perfect. It should fit right into my holder. Unfortunately, Mcmaster is a no-go from canada. Apparently we are all terrorists. (broken link removed to http://www.homemodelenginemachinist.com/f16/canada-land-terrorists-probably-according-mcmaster-carr-17927/)

Ill keep my eyes open for a high temp rare earth disk magnet locally here. Shipping on a $4 magnet would kill any deals anyways. Thanks though.

 

[Jeff2009]

As an offshoot of this thread https://www.hearth.com/talk/threads...rmometer-alarm-yet.101851/page-3#post-1365214 I figured I'd make a build thread on building my own version of a digital stove thremo. I do not have all my parts yet so this is just a list of what's on order so far.

The unit will have 2 Pids. One for stove top and one for stove pipe.
There will be a switch to arm/disarm the alarm.

So time for a parts list.

PIDS, the common Rex C100's. http://www.ebay.ca/itm/221101970614?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

LED/Alarm , same as what Auber offers (broken link removed to http://www.ebay.ca/itm/250983481063?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649)

Stack Thermocouple, 1250*C rated, 100mm long. (broken link removed to http://www.ebay.ca/itm/251209855097?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649)

All going to be mounted in an Aluminum Hammond enclosure. Darn enclosure and misc electrical bits cost more than the pids and other parts above! But I think it was worth it to spend money on a nice enclosure, because it is what's going to be seen. ALl electrical bits are from Digikey.ca. They offer the best Canadian shipping BY FAR!

Enclosure, http://www.digikey.ca/product-search/en?x=5&y=21&lang=en&site=ca&KeyWords=1455T1601BK-ND
(broken image removed)


Box is on back order till the middle of the month so its going to be a while before I get to finish it. I cant wait to get it built. Do to operator error, the stove has gotten away from us a few times (people throwing wood on, but not watching) , the alarm will help.

I'm looking for an opinion. About how far away can these be viewed???? I'm looking for a display like this but viewable across the room.

 

[realstihl]

Go with this one. The numbers are larger. Same one I have.(broken link removed to http://www.ebay.com/itm/MYPIN-Dual-Digital-F-C-PID-96WmmX48HmmX80Lmm-Temperature-Controller-TA8-SNR-/301286163350?pt=LH_DefaultDomain_0&hash=item46260e0396)

 

[mellow]

I can read my Auber AT100 from across the room or from on top of the stairs (I double check before going to bed sometimes), I can hear the built in alarm clear as day upstairs as well.

http://www.auberins.com/index.php?main_page=product_info&products_id=279

If you are just looking for a digital temp, they are great.

I just got this thermocouple for testing my exhaust and it works great: http://www.auberins.com/index.php?main_page=product_info&cPath=20_3&products_id=307

 

[scooby074]

I'm looking for an opinion. About how far away can these be viewed???? I'm looking for a display like this but viewable across the room.

Across the room, 20'ish away is no problem.

 

[Jeff2009]

Awesome! Thank you.