The thermocouple reader is listed around $85 but goes on sale regularly for around $45 + reasonable S&H. The Tenma 72-7712 (shown) not only has 2 inputs but also has good (manual) temperature correction and collects data into your laptop (unlimited) or stores 100 points within it for downloading later.
Also shown are a source of type K thermocouples sheathed in stainless-steel, designed for kilns etc ...but just perfect for coffee roasters. I have 3 of them and others here have bought them too.
I had read about folks opening the door after first crack to slow things down before second. Not the most effective way to control temperature but it apparently gets the job done. At least, when it's too high.
Posted Fri Jan 28, 2011, 11:02am Subject: Re: Thermocouple Equipment for roasting.
I will point out that BehmorThing has a decent interface for manually logging temperature and while it's still called BehmorThing, all of the Behmor features can be turned off and then it works quite well for all other roasters. And it's free, but only Windows.
Symbols: = New Posts since your last visit = No New Posts since last visit = Newest post
Forum Rules: No profanity, illegal acts or personal attacks will be tolerated in these discussion boards. No commercial posting of any nature will be tolerated; only private sales by private individuals, in the "Buy and Sell" forum. No SEO style postings will be tolerated. SEO related posts will result in immediate ban from CoffeeGeek. No cross posting allowed - do not post your topic to more than one forum, nor repost a topic to the same forum. Who Can Read The Forum? Anyone can read posts in these discussion boards. Who Can Post New Topics? Any registered CoffeeGeek member can post new topics. Who Can Post Replies? Any registered CoffeeGeek member can post replies. Can Photos be posted? Anyone can post photos in their new topics or replies. Who can change or delete posts? Any CoffeeGeek member can edit their own posts. Only moderators can delete posts. Probationary Period: If you are a new signup for CoffeeGeek, you cannot promote, endorse, criticise or otherwise post an unsolicited endorsement for any company, product or service in your first five postings.