Grounde Sensor Inputs - ATR142
Posted: 13/07/2020, 5:34
Hello,
I accidentally grounded the sensor inputs 10 and 12.
I am using a 3-wire PT-100 probe.
The reason is that I used a panel mounted 3-pole socket that had one pole galvanically connected to the chassis and which is connected to earth.
This lead to a behaviour whereby at startup of the ATR142 I saw negative temperature slowly rising to process temperature but never reaching it.
I have rectified the issue but the ATR142 still behaves erratic and is not showing the correct/stable temperature.
I guess grounding pin 10/12 has fried the input circuitry.
Is there any way this can be repaired? Is there some circuit diagram available to show which component might have been damaged?
Much appreciate any help provided.
Edgard
I accidentally grounded the sensor inputs 10 and 12.
I am using a 3-wire PT-100 probe.
The reason is that I used a panel mounted 3-pole socket that had one pole galvanically connected to the chassis and which is connected to earth.
This lead to a behaviour whereby at startup of the ATR142 I saw negative temperature slowly rising to process temperature but never reaching it.
I have rectified the issue but the ATR142 still behaves erratic and is not showing the correct/stable temperature.
I guess grounding pin 10/12 has fried the input circuitry.
Is there any way this can be repaired? Is there some circuit diagram available to show which component might have been damaged?
Much appreciate any help provided.
Edgard