new UEI DT200 - show 1.5*c in ice :-[ ?

[piotres]

Hi

3 weeks ago I have bought a brand new UEI DT200 from bes.ltd.uk . It has 2 stock k-probes . I have tested it on glass with some melted ice cubes and both probes show 1.0-1.5 *c . So I decided to buy a new probes - I have thought that pribes are bad .

Today new K-probes arrived - 2 pcs- every from antoher manufacter (one green, one white-blue ) - and it's the same ...

Lowest I have seen in melted ice was 1.0*c with every of 4 K-probes which I have in home Usually 1.5*c

I do the tests correctly, in the same way like other users, and I have tested in the same way my old CHY 502 thermocouple and it was 0.1*c with CHY in that conditions . So tests are OK .

Can I calibrate my DT200 a bit ??

Thanks a lot

Regards
Peter

[Marvin]

Hi Peter, here i insulated a small cup, filled with smashed ice and tested. I never reached 0C, but 0.1 and 0.2 C. If you tested with another thermometer, you have to send it back to calibrate.
The UEI dont have this function.

[IYP]

your temps are always going to be off a bit in that situation because of imperfect contact with the ice and the fact that it is melting....and the fact that the probe is going to warm it up a bit...try boiling water....should be pretty close to 100c

[piotres]

Heh as I said I have tested CHY502 in the same way and I had 0.1-0.2 *c, so it isn't needed to insulate the glass .


In higher temps all is ok - eg. Yesterday I have measured my temperature - with orginal probes I have 36.5*c under my tongue so Ok

[Unknown_road]

your temps are always going to be off a bit in that situation because of imperfect contact with the ice and the fact that it is melting....and the fact that the probe is going to warm it up a bit...try boiling water....should be pretty close to 100c

no if you leave an ice water mixture standing for a while it will be exact 0*C. the ice is 0*C and the water is 0*C, when you add heat to the mixture temps won't rise untill all the ice is gone, all the heat is transformed into potential energy not thermal.

piotres, are you sure the battery is ok? if the battery is ok and the meter is set on K-type probes it probably needs to be send to the factory for calibration. Or you take the 1*C for granted.

[expansionvalve]

I am not that familiar with these meters but most of the mid to high end stuff I have seen in the past has a small screw inside the case for calibration purposes, it may be the case with your meter, it may not.. I'd rip it apart and look if there are no warrenty stickers on it that would be damaged on destruction.

[johann]

I am RMA'ing my UEI DT200 soon. Horribly bad is an understatement.

My unit I cannot run 2 probes and temps go crazy. Sometimes even with a single probe, temps are completely wrong. That is with brand new battery.

It has caused alot of work for me, even stripped a unit before because of the invalid readings. Temps are also at least 2c off even when it seems to be working OK.

Maybe its just a faulty unit, but Im not happy with it. Soon I will buy a new thermometer. So Im stuck with this one also

[s7e9h3n]

I am RMA'ing my UEI DT200 soon. Horribly bad is an understatement.

My unit I cannot run 2 probes and temps go crazy. Sometimes even with a single probe, temps are completely wrong. That is with brand new battery.

It has caused alot of work for me, even stripped a unit before because of the invalid readings. Temps are also at least 2c off even when it seems to be working OK.

Maybe its just a faulty unit, but Im not happy with it. Soon I will buy a new thermometer. So Im stuck with this one also

From personal experience, the UEI's have one of the worst "sockets" to accept the thermocouples. If you have a probe inserted and accidentally bend one of the plugs up or down, the piece inside the UEI which contacts the plug will be out of alignment. Once this happens, you're basically $hit out of luck. I've had 2 dT200's rendered useless because of this problem while my other thermometers - an Extech and a Fluke have had no issues whatsoever......

[Bergo]

crap I just bought one, maybe should have went with the fluke i was looking at o_O

[Comp-Freak]

Hehe, before I'd bought one, I heard only good things. Now I have one, this topic appears

But mine seems to be fine, temps are ok around 0 degrees.

[johann]

Im just working with this UEI and if anyone was thinking of buying one then DONT, its a piece of

[Unknown_road]

Im just working with this UEI and if anyone was thinking of buying one then DONT, its a piece of

because you have a faulty unit doesn't mean nobody should buy one. I never had problems with mine. I think they're very good bang/buck. problems happen just send it back and it will be fixed.

[johann]

even when it works, temps are off. reading 1.5c in icewater is bad and its not just mine, piotres started this thread because his is exactly the same as mine.

I think for £70 you can do better, thats my opinion

[Revv23]

yeah mine reads like 2c off in a bath..


annoying but i dont really care, got it used for pretty cheap


if i were buying new fluke would be my brand.

[Unknown_road]

even when it works, temps are off. reading 1.5c in icewater is bad and its not just mine, piotres started this thread because his is exactly the same as mine.

I think for £70 you can do better, thats my opinion

Although I doubt if everybody here makes a good ice bath, calibration errors occur with every brand but most people here have uei's so we see calibration errors with those more often. When you get it back and the unit you get is still off then you have a reason to complain about the company.

btw. to be 100% sure that your ice bath is 0*C, put only ice cubes in a glass. Wait till you have a good water/ice mixture and then put the probe in the water.

[Jort]

maybe due the global warming the ice is hotter LOL

[catkicker]

maybe due the global warming the ice is hotter LOL

Ah, another sign there out to get us.

[Jaco]

I just received my DT200.

Mine's showing 0,2 - 0,4 °C in ice water .
I guess it's not the most accurate device , but it's good enough for me.

[marvt74]

The only thing is, if its 0.5-1C out at 0C is it likely to always be out by that much or is it likely to get far more innacurrate at lower temps

[Weee]

Mine was showing anywhere between 60-100*C at room temperatures depending and fluctuated wildly after about a month... probably would have shown about 35-75*C in ice water.. needless to say i played the warranty card there.

[kayl]

to do the test properly ya need to put the ice in a rag or something and then crush it with a hammer.
then place the ice in a glass with a tad of water
ypu really need the ice and water situation to get proper temps.

In saying this, after 8months mine went faulty, read -36c at 24c room temp.
just happened one day?? seems a few ppl are having issues with their UEI dt200



this pic was for the autocascade compertition when the temp probe was working sweet.

[\Karting_freak]

ice CAN be 1.5C and snow too

[johann]

I dont mind for mu DT200 to be a little off, but sometimes it goes completely crazy. It is very difficult to charge without a solid temp. When I arrive home I will upload a video clip of an example to explain hat I mean.

[Unknown_road]

Does everbody know that the couples have a + and a - ?

[yngndrw]

They can usually only be plugged in one way though. Unless someone pulled the plug off and swapped it over. :P