Digital 4 Channel Thermocouple Thermometer Temperature Recorder Data Logger AZ Instruments Multi Channel K Type Thermometer Thermocouple Reader with 8G SD Card 2 Bead Type K-Thermocouple Probe

Works great for displaying and saving (to the included 8GB SDHC memory card) four(4) channels of thermocouple temperature data. Then you need a USB SD-card reader (or some other mechanism) to get the data into your PC. No special software required. The resulting text files are easy to read, and include date, time, and 4 channels of temperature data. Having the 2x2 temperature display, instead of a 1x4 list, really helped in our application. As others have indicated, the readings tend to jump around a bit (perhaps up/down 3 degrees C) in the presence of electrical devices, a design defect which ought to be corrected. Others have complained about the instructions included, perhaps they have been upgraded, they weren't perfect but they were pretty good. We were up and running in short order, and this device paid for itself on the first day of usage. You may as well also purchase "9V 1.5A AC/DC Power Adapter for Arduino, Tbuymax UL Listed Center Positive 5.5mm x 2.1mm Power Supply..." to save on batteries and enable long-period usage. Overall a good product deserving of your consideration.

I'm using this to monitor the efficiency of my boiler system. The 4-channels are good. I tested in an Ice bath and boiling water, Using the offset feature, I was able to calibrate all the channels within a couple of tenths of a degree of each other well within the advertised specification. I also compared it to my fluke meter. The unit generates a CSV file when logging. I was able to take the generated CVS file and import to OpenOffice to plot the temperatures in and out of the boiler and each zone to calculate the thermal energy being used by each zone. I was using this to adjust the water flow speed to ensure that the water spent enough time in the pipe circulating in each zone to properly heat my floor.Pros:Uses standard k-type thermal couplers.The display is easy to read each channels tempUses a standard power supply 9V 1.5A Center Positive 5.5mm X 2.1mm connectorLogs to a CSV file, configurable sample rateCons:The display turns off when logging mode is operationalWhile you can figure out the manual, its hard to read poorly translated EnglishThe probes that come with the unit are very short (glad the K-type probes are cheap)All in All, I do recommend this unit.

The unit is a good value, providing 4 inputs and data logging. The unit is simple, but the operation in not very intuitive. The unit has to be dismounted to gain access to the SD card.

This is very easy to use and it gives accurate readings when I checked it in a deep bowl of ice water. I had a hugely fluctuating refrigerator/freezer combo that I logged for about 5 days. When I graphed that output (excel), I could see this was a progressively worsening problem as the highs and lows edged higher with each cycle.In a mini-fridge, the noise pickup made it show off-scale numbers. Same in a small utility room freezer. So your odds of success are just random based on the RF noice inside the unit. No amount of relocating or using just beyond the edge of the door helped in those cases.

I purchased this logger for less than half the cost of the "economy" "big name" product. I am using it for a private development project and could not be happier with its performance. The instructions are a little clunky, but get to the point quickly. Overall, I am impressed by how well made this instrument is: the case is sturdy; the LCD display is clear and functional; and the buttons cannot be pressed by a kitten (from experience)! Should I need another 4 channels, this is what I will buy.

Briefly:I purchased this to log temperature data, every five minutes, just the temperatures. This is simple enough, I am not asking too much. But this device was not writing data to the SD Card as it was supposed to. So, I sent a message to the manufacturer, but they just basically told me to "read the manual". No problem, I read technical manuals, I write them, I design products that have manuals, I know the drill. As it turns out, I had already read and re-read in detail their manual before contacting them, and I did not need them to tell me how to set up their device. I had already done so. The problem was that they did not listen to the problem, so let me state it again clearly:THE DEVICE IS SET UP PROPERLY.THE SD Card has been properly formattedIT TAKES DATA BUT ONLY APPENDS THE DATA TO THE SD Card FOR A WHILE. This could be a few hours, or just a few minutes. THEN DATA LOGGING STOPS RANDOMLY.For example, here is a set of data that was supposed to last a full day:MN/AT date time int 1ch 2ch 3ch 4ch unitAT 2023-07-17 17:11:12 5m 41.6 43.1 30.5 CAT 2023-07-17 17:16:12 5m 41.6 43.0 31.4 CAT 2023-07-17 17:21:12 5m 41.6 42.9 31.4 CAT 2023-07-17 17:26:12 5m 41.6 42.9 31.9 CAT 2023-07-17 17:31:12 5m 40.9 42.2 31.3 CAT 2023-07-17 17:36:12 5m 40.2 41.2 31.3 CAT 2023-07-17 17:41:12 5m 40.1 41.2 31.3 CAT 2023-07-17 17:46:12 5m 39.1 40.1 30.6 CAT 2023-07-17 17:51:12 5m 37.7 38.6 29.3 CAT 2023-07-17 17:56:12 5m 36.9 37.9 29.3 CNOTICE that it is set up correctly and taking data every 5 minutes, but then stops logging after only 10 time points.Infuriatingly, if you repeat this, exactly, without changing any settings, it will log for example: 3 time points, then 2454 points when you restart it, then 12, then a few hundred... and on and on like that, just stopping randomly, with random sampling periods each time before it quits.So, the company can either send me another one THAT THEY HAVE TESTED AND THAT WORKS PROPERLY AS ADVERTISED, AT THEIR EXPENSE, or I will just take the loss and advise everyone:>>>>>>>>>>>>>>>>>>>>> DO NOT BUY THIS PRODUCT <<<<<<<<<<<<<<<<<<<<<<<<<