Tasi TA612C 4 Channel Thermocouple Data Logger Short Review - Page 1
Forum section: electronics / testgear

author: gby
author_rank: Frequent Contributor
timestamp: May 24, 2024, 03:16:53 am
content: Tasi TA612C 4 Channel Thermocouple Data Logger Short ReviewI needed to do some thermocouple temperature logging with more than 1 channel. I decided to buy a hand held data thermocouple data logger with a USB interface to allow PC data logging. Specifically I got the Tasi TA612C 4 channel unit. Seehttp://www.china-tasi.com/m/view.php?aid=97Quick review of specs:- 4 Channels of either type K or type J thermocouple- On device logs up to 5000 records- 0.1 Deg C resolution with ±(0.2% + 0.7C) accuracy- Comes with 4 type K thermocouples 2 m length.- Has micro USB port for a virtual serial connection to a PC- Uses 3 AA batteries but when USB plugged in pulls power from USB host- No auto power off when on USB- No relays so totally quiet while operating- Can set min/max temperature alarms to sound a buzzer.- $45 to $80 price level depending on source- Two companion models TA612B, TA612Awith 2 and 1 channels but NO USB connectionThere is PC software you can download from the mfg site. I did not install that since typically utilities like these are not that great. Besides, the goal is to log the data with HKJ's TestController software along with other data. Fortunately, Tasi kindly sent me the virtual serial port protocol documentation (see attached). This device uses the CH341 USB to serial chip.After supporting this instrument in TestController I found that the it updates all 4 channels temperatures once every 0.5 to 0.6 seconds or between 1.5 and 2 Hz sampling.The four channels with the supplied 4 type K thermocouples are within +/- 0.1 Deg C of each other at room temperature.For hand held use the screen (44x52 mm) is very clear and bright with large enough sized digits to be easily read.Using a glass of ice water straight from a refrigerator measured in the 1 Deg C range. Not sure if the water was really right at ice melting temp so I consider this result within the probe plus instrument tolerance.All in all happy with this economical purchase. Certainly much cheaper and quieter than bench DMM's with multiplexor cards inside.

author: Leiothrix
author_rank: Regular Contributor
timestamp: October 20, 2024, 10:31:32 am
content: Thank you very much for both posting a review and the documentation.I have just ordered one of these as it aught to do what I want

author: mark432
author_rank: Newbie
timestamp: December 07, 2024, 04:05:02 am
content: Thanks OP for this. I just bought this meter and was thinking "Maybe I'll figure out the protocol".It's fantastic to find when someone has already done it.I just wish the original author would open source testcontroller.It'd be a shame for such a useful tool to dead-end someday.So far I'm happy with the meter itself.I do wish it had a RTC so it was easier to correlate data with other data sources, if you collect data "offline".But if you have everything linked up to testcontroller, that solves the problem.

author: mihael
author_rank: Newbie
timestamp: September 24, 2025, 08:12:27 am
content: I am very hopeful to see info about TA612C. I'm trying to make that work with Artisan and it is asking for slave numbers and register numbers for TA612C - would that be something that anybody could help me with? - I would really, really appreciate it! Thank you.