one rtd sensor which is connected at middle of distillation column where actua

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?

Question Posted / nitin

3 Answers
4743 Views
I also Faced
E-Mail Answers

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

Post New Answer

More Instrumentation Interview Questions

What are the materials available to prepare individually for competetive exams in Instrumentation field? Plz reply...

0 Answers

how to solve temperature error in compressor?

1 Answers

Hi, am aniket, I got engineering degree in instrumentation and control, but as their were no job availabilities for engineer's post I started working as instrumentation technician I kuwait, so my question is is this technician's experience worth for getting the position of engineer?

1 Answers Almeer Technical Services,

can anyone tel the syllabus or previous year question paper for BHAVINI(EIE)2014.

0 Answers Bhavini,

Area classification, Equipments, Gas groups, temperature classification, Ingress protection, Fire Extinguishers.

0 Answers CCIE,

can you suggest good traning institute in instrumentation ? (in automation, or designing)

5 Answers

how can i calibrate I/P converter

4 Answers

what is mean by process control?

4 Answers

we re giviang 24v supply to transmitter and we getting output from tx?now my question is wht we call this complete proces?

2 Answers

if my flow is 20000 m3/h than which range of DPT i have to use????

0 Answers

What is the Temperature Co-officient of Resistance of PT- 1000 and PT-2000 ?

2 Answers Adani, Birla, MEIL,

what is transducer?

13 Answers Sofcon,

For more Instrumentation Interview Questions Click Here