Digitales Thermometer, Zweikanal-Thermometer, Temperaturthermometer mit zwei K-Typ-Thermoelementen, Sonde, Hintergrundbeleuchtung, LCD-K-Typ-Thermometer für K/J/T/E/R/S/N Thermoelement

Right from the box I ran through the settings of probe type (=K), and Temp scale (=F) - very simple to do, and all settings remain as they were at last power-off.
The room temperature initially read 73.4F and 79.1F, but after 30 seconds or so, they settled down to readings of 70.1F and 70.1F. Over the next half an hour, one reading or the other would briefly move up or down by +/- 0.1 or 0.2, but always returned to 70.1. During this time, I cycled the power every few minutes to see how the meters started back up. There was only a second or two of settling time with each power-up. I left the probe ends in place, close together and weighted down to the floor by a book. Handling the meter body had no effect on the readings. Unplugging and switching the probes made no difference.
Comparing to my trusted Fluke 80T probe I have used since 1982 or so (and was last calibrated in 2007), the Fluke measured room (floor) temperature reading is 70.0F.
Based on my experience with thermocouple probes supplied with various multimeters I own , this is extraordinarily stable and precise, as well as accurate at at least one point. This result is not something anyone should expect from a mass-produced thermocouple thermometer - especially an inexpensive one. Probably I was just lucky - but at least it shows that such performance is possible from this instrument.
I plan to make accuracy tests with an ice bath and with boiling water, and tracking precision tests with refrigerants such as CO2 and with a hot air gun. I will use a variety of probes as well as the ones supplied.
I think it highly unlikely that the two probes will track so perfectly over a wide range of temperatures, but this single point test is encouraging. I will update this review after I perform further testing.
**** UPDATED****
I did some further testing, using the probes supplied. I twisted the probe ends together so they would be in the same environment.
In an ice water bath The two probes read 33.8F and 34.1F after stabilizing for about 2 minutes.
In my home freezer (set for -5F), The probes read -5.1F and - 4.8F.
In boiling water, they stabilized at 211.7F and 211.1F.
I tried to read my oven, set to 300F, but I couldn't get a stable reading. It turns out that the oven cycles on and off fairly frequently, and the temperature swings high, then low as it does and the probes can't keep up.
Manufacturing variations result in the sensing beads on the two probes being visibly different in size - about 2:1 in diameter. The larger bead is much slower to settle than the smaller bead. As the temperature is swinging up and down, the difference in readings becomes large, only settling once the temperature becomes constant for a minute or so.
Probably by selecting two thermocouples from the same manufacturer's batch that have nearly identical junction beads, the probes would track well. I ordered a set of ten probes to use in that way.

32 Personen fanden diese Informationen hilfreich

Easy to use and self-explanatory. Fast delivery

John Walko

Bewertet in den USA am27. Juli 2024

I was looking for a relatively inexpensive temperature gauge where I could monitor line set temperature on AC systems. Add a set of clamps to the setup and it is super-easy to use. The price is good and it works as designed. It is easy to switch between Centigrade and Fahrenheit, so it is easy to adapt to your needs. Recommended product and company.

Eric R Katz

Works good

Bewertet in den USA am2. Oktober 2024

Works good. Good price. Thermocouples are fast responding.

Know Your Oven Temperature

Richard Osborne

Bewertet in den USA am12. Oktober 2024

My GE oven did not seem to control the cooking temperature well so I purchased the Type K digital probe and now I can adjust my oven to the exact temperature required. Accurate (I checked the instrument at boiling and in ice water) and it works great.

Very inexpensive, works well, seems accurate

Brian W.

Bewertet in den USA am21. Juli 2024

Worked with temperature probe I bought, was able to compare measurements with Arduino input. seems pretty accurate. For more durability, add a metal-cable probe as the default probe is not suitable for high temperatures like ovens, etc.

Eine Person fand diese Informationen hilfreich

Problems with the thermocouple input wire melted onto my artwork.

Ken

Bewertet in den USA am9. August 2024

Die Medien konnten nicht geladen werden.

The device was accurate and detecting the temperature of my kiln because I tested it with a digital kiln. I need this device for my jewelry kiln, which does not have a temperature setting. They need to rethink the thermal couple input because the plastic melted onto my artwork and it’s not washing off. So technically It ruined a plate. I spent four hours on painting and it’s not even finished.

Amazon Customer

Easy to use!

Bewertet in den USA am13. August 2024

Great product and easy to use!

Tark Mwain

Great For the Price

Bewertet in den USA am19. Januar 2016

I purchased this thermometer to take temperature measurements around the house and just to have a toy to tinker around with. I am not using it for any industrial or scientific purposes that require super high accuracy. If that's what you want, then you need to spend the money necessary to achieve that (i.e go buy a Fluke). You're simply not going to get that for $17.

After I opened the box, I decided to test the accuracy, so I put a pot of water on the stove and brought it to a boil. I stuck the leads in the center of the pan (without touching the sides or bottom) and both leads read 209.1°F and stayed there. I checked the barometric pressure (since the boiling point of water varies with pressure) and I determined that the water in my area should boil at 211°F. So, I figure that this thermometer's accuracy is within 2°F to 2.5°F, which is good enough for me. Sure, I wish it was reading dead on accurate, but the good news is that both leads read exactly the same in the boiling water, so there's no variance at all there (like is the case with some cheap thermometers that give different readings on the different leads).

Pros:

Cheap
Fairly accurate
Both leads read exactly the same during the boil test (209.1°F).
Nice buttons
Decent build quality
Does min/mean/max readings
Has a hold function
Can use almost any type of thermocouple (K, S, E, J, etc.. etc..)

Cons:

Inaccurate by around 2°F

The backlight cannot be controlled, it only comes on for a few seconds after a button press. I would like the option to turn it on for as long as needed or for it to have a longer cut-off time.

Has a cutoff of around 3-4 minutes (I didn't check exactly). Sometimes cuts off right in the middle of a reading which is annoying.

Cannot be calibrated and you cannot create offsets (i.e. you can't do manual error correction by adjusting it to a known temp).

Overall:

The pros outweigh the cons and it's definitely worth $17. This thermometer is made in China and no other developed country would be able to produce a thermometer like this that retails for $17. So, all of us in the west should take advantage of China's generosity before they develop further and their people begin demanding 401K's, $40 an hour, full medical and dental, and pension plans like us Americans. It will happen at some point, so get while the getting is good.

13 Personen fanden diese Informationen hilfreich

Alle Rezensionen ins Deutsche übersetzen

Spitzenrezensionen aus anderen Ländern

Vahid

Did the job

Bewertet in Kanada am 5. Oktober 2024

I think I connected wrong poles of thermocouple and that was the problem - but the return was so straightforward

Mr C J Smith

Works very well and is easy to use

Bewertet in Großbritannien am 29. November 2016

Works very well and is easy to use. The plugs are a tight fit into the machine, a bit too tight but better than too loose and dropping out. All in all a very good thermometer.

el ouali farid

Moyen

Bewertet in Frankreich am 27. Juli 2016

Pas precis,erreur de 1 degre voir 1,2 ....a voir avec d'autres thermocouple,ceux la sont de faible qualite...je ne n'attendais pas de miracle pour le prix....si encore on pouvait le calibrer....mais non....

Scott Kennedy

Don't waist you money

Bewertet in Kanada am 22. Februar 2018

Inaccurate temps no good

Nicholas Dark

but it certainly does the job and at a great price.

Bewertet in Großbritannien am 20. August 2016

Nothing fancy, but it certainly does the job and at a great price.