Thanks Michael - great links. I didn't realize Omega offered so many types. So 1/2" NPT is the standard - kinda large but do-able. Tom <Snip> /BTH-000_BTH-090.html <Snip> tml <Snip> AND_WELL_REF>http://www.omega.com/toc_asp/frameset.html?book=Temperature&f=ile=HEAD_AND_WELL_REF <Snip> ommodity>http://www.omega.com/toc_asp/frameset.html?book=Temperature&file==260_Commodity <Snip> -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - = - "Great coffee comes from tiny roasters" Sweet Maria's Home Coffee Roasting - Tom & Maria http://www.sweetmarias.com Thompson Owen george Sweet Maria's Coffee - 1115 21st Street, Oakland, CA 94607 - USA phone/fax: 888 876 5917 - tom
Tom, The thermocouple assemblies are a large, cumbersome, and expensive solution, to me. What I have done in my sample roaster, and in other applications, is to use a makeshift holder for a standard thermocouple probe. If you buy a 1/4" x 6" SS probe, you can mount that through your roaster's front bulkhead without the fancy holder. To secure it use a brass pipe fitting you can get at any hardware store. Drill and tap (from the front) for a 1/8" pipe. Screw in a 1/8"NPT to 1/4" compression adapter fitting. The hole in the 1/8" pipe fitting is just under 1/4", so drill it out using a 17/64" drill. Then, slip the probe through the fitting and tighten the nut to hold the probe in place. It is a much smaller and neater installation. Dan Thanks Michael - great links. I didn't realize Omega offered so many types. So 1/2" NPT is the standard - kinda large but do-able.
This is exactly the procedure I use to mount my TC probe in the ubber poppe= r - I use 1/8" probe and 1/8"NPT x 1/8" compression fitting. Works well, permanent, rugged, inexpensive. Mike (just plain) On 6/27/05, Dan Bollinger wrote: <Snip> " <Snip>
This is a multi-part message in MIME format. Mike, Great minds think alike! For Tom, since he is using a large drum = roaster, I suggested the 1/4" probe just for strength issues. Were do = you get 1/8" probes? Dan
Dan I picked up a couple of 'T's several years ago on eBay for a couple bucks= for a different project (computer hot rodding) and have been using one of= them for the ubber popper. I have been questioning the accuracy of my temp= indication in the >440 F range ('T' is recommended for ~212 F range) and am= currently waiting for a 'J' unit to arrive - will upgrade (?) to it when it= arrives. I ordered the 'J' and a couple of 'K's from TTI Global. 1/8" x 4" with medium temp male TC connectors fixed to the tube is the configuration I ordered, cost was ~$20 each. They have them built by another outfit so the= special order is a two to three week wait. TTI Global seems to be the favorite source for the Fuji PIDs within the coffee crowd, and the folks there (Jason Dooley 800-884-4967) are knowledgable about the uses and questions that we come up with. I've ordere= d a fair amount of pieces and parts (PIDs, SSRs, Heat Sinks, SCRs, TCs, TC connectors, TC wire) from them and been completely satisfied with the service and follow up tech info/support. http://www.ttiglobal.com/Product.asp?Param1=LC&Param2=60 The reason I forwarded Omega links to Tom is that their site, IMHO, is unmatched as a source of information related to thermal knowledge. They are= the historical big boy on the block and although a bit pricey, give immediate and good service when needed. Their "Handbooks" are a tremendous= resource and free. And I keep going on - -and on - - and on. Only had four restrittae (sp) so= far this AM after the obligatory Cappa. Getting ready to try miKes stash reduction blend. Mike (just plain) On 6/27/05, Dan Bollinger wrote: <Snip> <Snip> <Snip> . <Snip> <Snip> <Snip> h <Snip> h <Snip>