Green Coffee Buying Club

Coffee Discussion boards => Hardware & Equipment => Topic started by: grinderz on October 24, 2011, 11:17:35 PM

Title: Cheap eBay thermocouple - got what I paid for
Post by: grinderz on October 24, 2011, 11:17:35 PM

I bought a couple of these cheap thermometers off eBay and thought I would post about them in case anyone else has looked at them. My opinion is "meh." Not a disaster, merely OK.

First, I failed to notice before purchasing them that the temperature scale is only in Canadian.  ;) I can live with that, I guess.  More significant is that when I tested them with rapidly boiling water (300 ft above sea level) one reads 99C  and the other 98.7C. That's within their advertised accuracy range, but I was hoping for better. Maybe the barometer was lower today?  I also wish I had a better way to calibrate at, say, 350F (oops, I mean 177.6C  :-\ ). In spite of my griping, the price was definitely right.

(http://m2.uxcell.com/i/11b/ux_a11060100ux0089_ux_g03.jpg) (http://www.ebay.com/itm/Battery-Operated-K-type-Thermocouple-Probe-Thermometer-/230688786753?pt=LH_DefaultDomain_0&hash=item35b61f8941)

Title: Re: Cheap eBay thermocouple - got what I paid for
Post by: mp on October 25, 2011, 04:25:01 AM

So you think they're great then?

How can you go wrong with reading in Celsius?

 ;D

Title: Re: Cheap eBay thermocouple - got what I paid for
Post by: Ascholten on October 25, 2011, 04:35:12 AM

There isn't a switch on them somewhere to swap between F and C?    Most of them have one somewhere, in the battery compartment maybe?

Aaron

Title: Re: Cheap eBay thermocouple - got what I paid for
Post by: grinderz on October 25, 2011, 08:07:17 AM

Quote from: Ascholten on October 25, 2011, 04:35:12 AM

There isn't a switch on them somewhere to swap between F and C?    Most of them have one somewhere, in the battery compartment maybe?

Aaron

Nah, I guess they weren't intended for the American market.

Title: Re: Cheap eBay thermocouple - got what I paid for
Post by: Ascholten on October 25, 2011, 08:29:56 AM

I just looked them up, yah a chineese cheap knockoff.  you can convert to F but it takes some soldering skills and a mod on the mainboard.  Probably something you dont want to do, especially for that cheap price.  You can get one from a discount store that does F for about 5 bucks to be honest.

Aaron