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one rtd sensor which is connected at middle of distillation
column where actual temp. is 100deg but when we tight this
sensor at thermowell end it goes down to 90 deg & when
remove from the thermowell(but sensor end dipped in well)
showing actual reading, what is reason?

Answers were Sorted based on User's Feedback



one rtd sensor which is connected at middle of distillation column where actual temp. is 100deg bu..

Answer / ashwin jain

when the RTD is loose, the RTD probe direct contact to
thermowell body so RTD giving the temp.(100 deg) but when
we tighten with thermowell there is sum gap or space
between thermowell body & probe,so temp down to 90 deg.
also check the OD of thermowell.
OD of thermowell > RTD

Is This Answer Correct ?    2 Yes 0 No

one rtd sensor which is connected at middle of distillation column where actual temp. is 100deg bu..

Answer / nitin

i want again clear my question that, rtd showing 100 deg temp. & it is ok, but as soon as i tight the length adjustment screw that is on rtd rod to the thermo well, temp. suddenly dropped down to 90 deg, what's reason
and again i untightened that screw and kept apart from thermo well, It again showing the correct reading. what's reason

Is This Answer Correct ?    1 Yes 0 No

one rtd sensor which is connected at middle of distillation column where actual temp. is 100deg bu..

Answer / ashok

The Question is not clear bez always temperature needs time
to reach the actual value like 100deg. so when you take out
of it will not loose the temperature until we take the senor
out.

Is This Answer Correct ?    1 Yes 1 No

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