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Impossible calibration ATR-901

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user14452
Posts: 8
Joined: 01/01/2017, 16:56

Impossible calibration ATR-901

Post by user14452 »

I'm experiencing problems with an ATR-901, this is what is happening:

When we are in room temperature (20ºC) it shows around 160ºC.
I fired the kiln to 1260ºC, at some point the difference between the thermocuple mesure and the real temperature get corrected and it's almost the same. So I tried to solve this mess using:

P-05 Offset correction for sensor input (-150/150 °C or °F)
P-06 Gain calibration for sensor input (-5.0%…+5.0%)

So i tried to calibrate it, adjust P-05 to show the room temperature, and adjusting the calibration by going to 1000ºC, but the gap is so high that -5% is just not enought to correct that.

To make it clear: thermocuple Type S is not the problem, is working properly and the controller is configured for this type of thermocouple.
Pixsys tecnico 6
Moderatore
Posts: 1184
Joined: 12/09/2016, 14:49

Re: Impossible calibration ATR-901

Post by Pixsys tecnico 6 »

Hi,
the parameters that you are using it's correct, but it is very strange your temperature probe gap. Check your TK-S probe are working fine and check its installation is correct.

Best regards.
user14452
Posts: 8
Joined: 01/01/2017, 16:56

Re: Impossible calibration ATR-901

Post by user14452 »

I tested that TK-S on another device and was showing correctly the room temperature, so I'm afraid the problem does not come from here. I checked also the +- wiring, it's properly set.

Could be some parameter which I dont know? The type S of TK is properly set on the settings.
Could be that just ATR-901 is somehow broken/malfunctioning?

Thanks,
Pixsys tecnico 6
Moderatore
Posts: 1184
Joined: 12/09/2016, 14:49

Re: Impossible calibration ATR-901

Post by Pixsys tecnico 6 »

Hi,
to check the ATR901 remove the TCJ-S and short circuit the TCK-S PIN in your electrical wiring, set P-05 = 0°C and P-06 = 0°C, so you read the cold junction temperature of the ATR. If The cold junction temperature is too hight (more 30-35°C) the ATR901 maybe broken.

If you want send me your parameters list so I check it.

Best regards.
user14452
Posts: 8
Joined: 01/01/2017, 16:56

Re: Impossible calibration ATR-901

Post by user14452 »

Yes, the ATR-901 is broken, I bought the next model ATR-902 and all is working properly now.

Anyway I would like to repair that unit, Is it possible? What should I do and what is the cost of it?

The unit is in Spain.
Pixsys tecnico 6
Moderatore
Posts: 1184
Joined: 12/09/2016, 14:49

Re: Impossible calibration ATR-901

Post by Pixsys tecnico 6 »

Hi,
follow this link to RMA procedure.

http://www.pixsys.net/qr.php?s=1206

We check the serial number and we reserve respond you if the device is cheap repair or not.

Best Regards.
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