UNI-T UT325 Dual-Channel Logging Thermometer Teardown - Page 1
Forum section: electronics / general

author: phil_jp1
author_rank: Regular Contributor
timestamp: November 21, 2011, 09:51:21 pm
content: Hey, everyone!Recently I bought UNI-T UT325 Thermometer and made a small review + teardown.Sorry, but I'll just put some of the photos here, and without, pretty much, any description.Because I don't think that I need to copy all of the text with pictures here, when I've already got it there:http://jumperone.com/2011/11/ut325-thermometer-review/- the reviewhttp://jumperone.com/2011/11/ut325-thermometer-teardown/- and teardownI just want to point out, that it based around very popular MSP430 processor and it is very "hackable". It has all the known components with datasheets (except one), and on top of that it has a full-sized JTAG connector.This thermometer has some really major issues with firmware and software, and if to write a decent firmware for it, it can compete with much more expensive equipment from different manufacturers.(I'm actually wrote all that in review and teardown)P.S. Link to really big photo of the main board:http://jumperone.com/images/2011/11/ut325-thermometer-teardown/vhuge004.jpg- Phil

author: Chupacabras
author_rank: Regular Contributor
timestamp: March 12, 2017, 08:16:48 am
content: What is the precision of this thermometer?That is actually the most interesting thing to know.

author: cs.dk
author_rank: Unknown
timestamp: March 12, 2017, 09:05:09 am
content: Quote from: Chupacabras on March 12, 2017, 08:16:48 amDepends on sensor, but +/- 0,2% + some digits;http://www.uni-trend.com/productsdetail_771_797_797.html

author: 2N3055
author_rank: Super Contributor
timestamp: March 12, 2017, 09:20:26 am
content: I got one cheap few years ago.. It is quite OK for checking things like heatsink temps etc. It has two channels and can log to PC.My biggest problem is that id doesn't send both temps to PC. You have to chose only ONE that will be logged.It measures both simultaneously, but sends just one to PC. Stupid.Works well standalone, with PC only sends one channel. If it were to send both, would be much more useful.You can user calibrate it very easy.All in all, if it had smarter software,it would be 10 times more useful.

author: Chupacabras
author_rank: Regular Contributor
timestamp: March 12, 2017, 10:09:00 am
content: Sorry, I did not mean precision, but accuracy.I saw some cheap thermometers reviews on youtube where temperature measurement was 3-4C off. Which is not within specification.It would be interesting to compare this thermometer with different thermometers next to each other. At least with some classic analog thermometer.EDIT: well, actually precision=accuracybut one thing is what's written in specification, and the other thing is reality. Since chinese specifications are not often thrustworthy, it is good to see real measurements, real precision.

author: Martis306
author_rank: Newbie
timestamp: December 15, 2017, 10:15:11 am
content: I have two MS8217 and a good mercury thermometer with a 0.2-degree division. In January I will try to conduct a measurement cycle with the procedure for calibrating this thermometer and my MS8217.

author: c1400700226
author_rank: Newbie
timestamp: November 09, 2021, 12:25:14 am
content: Ouch, I just posted a teardown and found this

author: tonight to hot
author_rank: Newbie
timestamp: February 01, 2022, 12:58:46 pm
content: Hello, I really need the evaluation of this thermometer. Your link has expired. Can you upload your assessment again. (sorry my English not well)你好，我十分需要这个温度计的测评.您的链接已经失效。请问您是否可以重新上传您的测评