Laser Infrared Thermometer: Fluke 59 Max vs Chinese No name
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- čas přidán 18. 12. 2016
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We wanted to get a laser Infrared Thermometer for homeschool experiments. We were not sure if a cheap Chinese no-name would be OK for our needs or if something more high quality like a Fluke 59 Max would do the job...
So we bought both and tested them to show the next person who has the same question which one they should get.
laser is for finding target. It is measuring temperature using IR not laser. So you can turn laser OFF 5:15 that is okay. for safety you can turn the laser off.
The same thing happened to me with a cheaper thermometer. It was working perfectly fine until I put it over a boiling kettle, after that it was showing lower temperatures too high. I think it’s the steam that gets into the sensor or it steams up the lens and it affects the low temperature readings.
Within two hours it was showing correct readings for the freezer again (-20 C).
The more expensive thermometer must be sealed better.
I have the cheap one and I made the same experience with cold temperatures. Also boiling water shows a problem. As soon as it stops making bubbles the temperature falls immediately a lot. It is okay if you want to measure the temperature of your pool or something in this temperature range. Mine works well until about 80 Celsius plus. You can set an offset and also the Emissivity. But you have to do this every time when you switch it on. The same is true for the laser and the back light. By default both will be always on.
I have a cheap General brand. IRT207.. It's 12-14 years old... When it is off temp wise. I've found that plowing off the lens with air corrects it and making sure it's not frozen. I'll cup my other hand over the top of it to kind of warm it up and so far this seems to get it back to reading my body temp correctly with in a degree or two.
I've been using the same $12 version for years. I keep tropical fish, and it's been reasonably accurate the whole time.
I'm not doing research for NASA, so a degree or two off isn't going to matter.
Great presentation. Thank you for your time and effort to make this video and share it with us. Greetings from Croatia.
thanks for the video, I bought the fluke 62 max plus and felt a bit i paid too much for what I need, but yeah, the price difference worth every cent.
Thank you, I'd really have wanted to see a third one, either one but same model to see if they agreed. Somehow to create a baseline, for all we know the fluke could have been off, not likely but if they charged you 100 for the Chinese would that mean it was the good one?
How do you setup the alarms for high and low temperature readings
Nice! Thanks!
Thank you so much for this, I've been wanting to do some home projects with stuffs around 100-200 degrees. It doesn't really matter that much to me for the accuracy. However if I ever do need to upgrade will definitely look forward for the fluke
actually a decent review.
With the Chinese one if you measure two extremes boiling/frozen you have to wait 30 mins for it to recalibrate again and thats in the manual, also (as stated already)you have to be careful of the distance you are holding it from the item you are measuring the temperature from because of spot size, again stated in the manual.
The 30 min wait is for if you take the instrument itself from hot to cold it does not apply to what you are measuring. Example, Taking the instrument from inside your house at 70 degrees to outside on a cold day at 30 degrees you need to wait 30 minutes for it to acclimate before accurate readings.
Yes must compare the spot size for futher comparison
@@bobcat1 Wrong , the range of the cheaper unit takes 30 min to recalibrate.
That would make these things virtually useless. I think you've interpreted things wrong. bobpuddy below is correct.
I have a fluke 62 max, it's pretty accurate, I used a fluke 189 true RMS with a k-type thermocouple and the results are within 1 degree of each other, in my opinion a measurement tool should be as accurate as you can get. Why would you want something that's not accurate? Could you imagine a calculator that's questionable ?
I agree, for the most part. I'm sickened because I have three different tire pressure gauges (psi) and they all are off by by 5psi or so - there is so much crap out there! But, now that I'm out of a job right now, a $40 price difference is a big thing for me, but, considering that Fluke sells Thermo cams in the $50,000 range, I think they know what they're doing, so $40 extra is well worth it.
The Chinese version measures the center temperature and the surrounding circle within a diameter given by the manufacturer. I don't know about the one you bought but in other versions, it's cleared out in the manual, and its a ratio between the distance and the diameter of the red laser spot so it measures up to 12 different points within the res spot and gives you the average. for sure the Fluke is more accurate considering this concept but it's also much more expensive.
Your statement is misleading because no, it is not a different method for the chinese version. They both measure in a cone shape with the area of average measurement larger, the further away it is. However, no you do not factor for or measure the diameter of the red laser spot, are you crazy? No, it is typically (in english countries measurement) inches of measurement per inches away the tool is, for example 1:20 or 1:12, etc and often stated right there on the tool and almost always in the user manual too, unless it is entirely written in Chinese or Chingrish. ;)
on FLUKE you can change the EMS (emissivity) setting . look up on google img "emissivity chart" or something like that.... on cheap ones you can't do that ,which makes a huuuge difference ... One can be 20C off even with FLUKE if the EMS is set incorrectly for the surface measured.
You are right about emissivity however, I've yet to found a cheap unit you can't change the emissivity setting on. Though, the cheapest ones I've seen only let you change it at a rate of 5, so 100, down to 95, 90, 85 etc.
You can change the EMS setting on the cheap one featured in this video as well. IndependentThought I see a lot of those on AliExpress, the very cheapest ones don't allow you to change the setting, but you can also find one that does for under 10€
Im not sure but in think you can not meassure the water surface, also the EMS is important. You have to select different EMS for each surface you want to meassure i guess to get correct temperatures. The distance it also important, you want the sweet spot and not measssuring within inches and get the average of that area. I wonder whats more accurat, IR Thermometer or thermal cameras like the flir's
The Chinese make IR has some resolution issue at different temp range ex. around 32 F it has poor accuracy
good test, i went thru a ton of cheap ones, then bought the fluke....cheap ones are all over the place, drove me nutts
I am with you much prefer the fluke :)
Hi Sir,can you tell how to set HAl value what is the default value of HAl,Offset,Lal?
I have use one of nan contact termameter for one month, everything was OK but if I press the object temp is show me the temperature and if I press the body temp button is not working .just write (LO)
Plz help me
This Fluke is 250$ now. What a ridiculous discount the past is
As per the label on the GM550 Thermometer, the blue one, the distance to spot ratio is 12:1, while the Fluke is rated at 8:1. To get accurate comparative readings, these two cannot be held together and measure the temp from the same distance. Could you please redo the tests in your video by measuring the temps at the correct distance per thermometer? It would be helpful to see the differences then.
We have a GM 300 thermometer in the outside temperature, for example, a minus one to 15 degrees low temperature. What can we do? This problem does not occur. The temperature range can be reduced and humanized.
I am not a thermometer expert so I am not sure what the best practice might be in this case.
They get "beat up a little bit"? What on earth are you doing with them? The main thing is will they survive battery changes, and will the ones with the printing on the rubber buttons, have that printing wear off. I don't beat my equipment up per se, but I admit that i may not always wash my hands and/or wear soft gloves, so eventually printed-on rubber buttons do have their markings wear off which is really, REALLY annoying because it didn't have to happen, would have been so simple for them to mold that into the plastic next to the button too or just just use hard plastic buttons with that molded in (not still printed on, or else there was no point).
The thermal diode in the cheap Chinese one has to cool off for 30 mins. Also the diode light is huge. You have to be close to keep it small. Why the Fluke has a rated response time. Distance from an object. Yet still be accurate to it's rating on the Data sheet. You get what you pay for...
I did not know that. Very good information
You need to reset the emissivity on the cheap one.
hi
we have 3 new fluke 59 max IR meters . its being used for screening corona patients for high body temperature but apparently all the 3 of them are showing wrong temperatures simultaneously .so if you can kindly help us set the settings correctly it will will hugely helpful. thanks in advance.
I just posted a video to answer your question
czcams.com/video/mV2A2bP6O9w/video.html
Looking for one similar to this one for human body temp. Any suggestions?
Yeah I had never thought about that. I did use the Fluke against my head and it does not read anywhere near 98.6 more like 91/92. I imaging you can tweak the emmisivity to get it more to where you want it...
I think it's a fair assumption that the Fluke is accurate, but it is an assumption
The fluke is only more accurate if you have the emissivity set correctly for what you are trying to measure and the same is probably true of the generic, so I can't conclude anything much based on your video for failing to do this, except to conclude that out of the box, the fluke seems more accurate at translucent cold things. ;)
Can you calibrate the ship unit?
I support you can ... but I am not sure where mine got to... Its a little lost at the moment
why would you think a fluke is the same as a flop?
I am confused as to why your unit had certification. Not mentioned on the Amazon page.
Mr. Garber why is that confusing ? It’s on their site
Manual says cheap one will go down to 58 F
How do you explain that the cheap unit was closer to the 212 degree boiling water than the fluke?
I am in Denver, CO 5280 ft up the boiling temperature here is 203 deg
Ohhhhhhhh shit son, take THAT! He's in Denver ohhhhhhhhhh
I am looking for one to see what temperature my phone and Xbox and other ideaums are running at. I would like it to be as acarit as possible but $65 that's is a lot of money
The cheap one is probably accurate enough for your needs
iqless yeah probably
I'm pretty sure that pan of water is not 30 degrees. It would be ice.
This comparison is useless. There are no reasonably exact control measures taken. Like an earlier post if you're not familiar with emissivity of surfaces you might as well use your eyes and finger tip to measure temperatures. Anyone that buys ANY IR gun and needing a measurement other than 100f +/- accuracy are fooling themselves. Without memorizing or viewing a EMS chart, which by the way the EMS changes with temperature, and knowing the distance within 5% you will can easily be 10F-100F off in measurement at any distance.
EMS values for materials can vary as much as 5x depending upon the temperature.
Certain industries it's useful. Like measuring multiples of the same exact item at nearly the same exact distance like. Would someone use an IR gun for measuring something needing +/- 1% accuracy? HELL NO! Not even 10% accuracy. Wouldn't even recommend using one to see if a frying pan is 80F or 250F before touching the pan, your finger is more accurate.
I like your review (thanks!) although you do need to practice getting to the point when making reviews. There was a lot of waffle and I found had to skip though a lot to get to the 'meat'.
Just click the mouse cursor and skip ahead, that's what I did. I think moving the device about too much while measuring affects tge results. So keep it to the point!
Fahrenheit ... what a prehistoric unit my God !!!!!!!
why do we still use that crap ? because it is a CRAP !! complex, difficult to escalate , difficult to calculate, difficult to handle ...
why dont we move to the 21 century at last ?
MKSC (meter/kilogram/second/centigrade) is the way to go people .. !
is not a matter of pride of whatever ...
even UK moved away from obsolete Fahrenheit and Lb and inches decades ago .....
nice review by the way ..! very well done ...
Your preaching to the Choir. My undergraduate was in Mechanical engineering as such every problem I did had to be done in English units and SI. Not fun.
Fahrenheit has a higher resolution than Celsius. Nearly double. . Also, feet and inches are closer to average human ergonomics, which is important because in the real world we usually lack measuring equipment-forced to use our hands and feet to measure... So, for my job 32.4 v 31.9 is difference between life and death / failure or success. Resolution Celsius lacks.
Oh come on! Resolution of Celsius if lower than Fahrenheit? Have you ever heard about decimals?
Imperial units are archaic and I hope that they will disappear one day.
i.redd.it/2zvqpynr264z.png
Boiling point is 100 , freezing point is 0 (water) In my country that stone age base twelve shambles was made illegal back in the 70'`s Thank God. To you defenders of the Imperial shambles perhaps you would like to tell us the actual weight of a hundredweight (cwt) . Hint as you can imagine it is not 100 of anything...British pounds American pounds Gallons where different, a stone as a measure of weight . The original stone probably resides in a glass case in the tower of London. 123456789 10 its all you need folks.
WELL AMERICA IS BACKWARDS COUNTRY
NOTHING IS ACCURATE LIKE THEIR HISTORY
I’ll take the fluke
Thanks for your test. Il stick with the cheap one.
Yeah for most simple things no need for a more expensive one
Patrick,
I watched your video.
I was quite shoched how poor these thermometers performed. I would have expected the Fluke (based upon experience with their instruments in the lab) to be quite good.
Feeling puzzled by the poor results, and your surprise (you had claimed that earlier they were close), I question whether the sensors had become steamed up during your experiment. The thermometers should be allowed to stabalise at room temperature before use and allow any condensation on the optics to clear. You appear to have used these instruments within the vacinity of the steaming pan.
It is important that both devices are set to the correct emissivity for the material that you are measuring.
Could you re-run your experiment in a more controlled way.
You have put me off both devices.
Good point about the steam. With this video I was not going for a scientific super accurate comparison to show which one to use in a lab setting or such. I just wanted to see if there was much reason to go for the pricier thermometer in a homeschool setting.
emmisivity is an interesting thing to teach in a homeschool, but probably not something for a kid under 16.
What are inferred thermometer good for? My dad thinks This was a waste of money.. 🤨😑😒
Which I don’t believe. Besides cooking 🥘 and making soap 🧼 Idk what else I can say it’s good for..
They are a nice quick way to measure the temperature without the need to touch something with a thermometer. I use mine around the house to quickly measure the temperature of something for class work with my kids or for some personal testing I do.
I got the american one from Digiometer.com and honestly I think it is pretty great and pricing is great too but only one color is available
the fluke is measuring the cold, so if you measuring warm , around 100 c then just save your money, if you use other peoples money by the most expensive ,
The cheaper one need to be calibrated
Am I the only noticing he's not even ppointing at the same spots with each device, how can this be a faire comparison ?!?!
I appreciate your work, but your measurements are not really accurate. You have to adjust the emissivity settings when measuring shiny surfaces like a stainless steel pot. And even then it is pretty much hit or miss.
laser thermos are a sham. fluctuates all the time. can't get steady accurate readings because it's hitting different air particles on top of hitting surface particles with gloss deviations at different regions all the time. even the fluke branded ones made in the states are useless. also, how do you know the fluke is the more accurate one? maybe the chinese one is more accurate since you didn't test with a full contact third party thermometer
Fluke is protected by Uncle Sam and your paying for it, otherwise like virtually all real manufactures in the US they are history. Foreign makers are kept out of the certified market. The Fluke is likely made in China.
The Chinese instruments can be as good at a fraction of the price. In the distant past I was a Fluke fan, they made their fair share of unreliable products.
The spot to distant ratio is likely different, a parameter that needs to be followed for accuracy. The higher the ratio the higher the cost, generally. Distance range is another parameter that needs to be considered. Each laser model will differ.
NIST cert....pffff
I know what the problem is... you. You are using them incorrectly, your technique is off and we don’t even know what the ratio is for the chinese knockoff.
This will help you understand.
www.thermoworks.com/pdf/IR-General-Calibration-Instructions.pdf
In my humble opinion, your speech seems to be biased. I can understand that you rather buy an american product. But I would expect a fair comparison. Anyway, thanks for your video.