Impossible calibration ATR-901
Posted: 01/01/2017, 17:09
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.
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.