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I HAVE GOT TYPICAL PROBLEM WITH THE TEMP.INDICATION.
THE PROBLEM IS THE K-TYPE T/COUPLE OUT PUT IS CONNECTED TO
A INDICATOR.THE INDICATION FLUCTUATES SOME TIMES AND SOME
TIME IT IS STABLE.
WHEN I CHECKED OUT PUT OF T/COUPLE THE MV WILL NOT VARY.
WHERE AS INDICATION FLUCTUATES.
WHEN I GIVE MV SOURCE TO T/COUPLE EXTENSIONCABLE FROM THE
FIELD IT INDICATION IS STABLE.
WHEN GIVE MV SORCE TO INDICATOR ITS INDICATION IS STABLE.
PLEASE CLARIFY.
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Answer Posted / aftab ahmed mazari
I agree with Mr. Satyendra Bhai Patel suggestions.
More over please check followings:
1. May be some electric motor starts and its cable routing
is near to your extension cable.
2. Also get check thermocouple,some time,its hot juction
got open and close with the passage of time. Replace
thermocouple.
3. Check loose connections.
4. Check thermocouple any wire being grounded at some time.
5. Any how, do not megger thermocouple extension wire.
Check it with normal multimeter.
aftabmazari@yahoo.com
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