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
5904 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

why 8bit microprocessor referred as 2^16?

2 Answers

What is the difference between bench set and operating range i control valve?

1 Answers Descon,

how to calibrate load cell

0 Answers Siemens,

i am from instrument branch i want paper patern of mahagenco . any pevious years paper regarding my branch send me please . please.....

0 Answers

Lux meter is the measuring device to measure the lux level of lighting fixture. in industrial sector two types of lighting fixture is being used as street lighting purpose 1. HPSV (Sodium) and 2. HPMV (Mercury). HPMV having white light which is an combination of red, blue and yellow colour, while HPSV haivng Yellow lighting. in HPSV red & blue colour will be absent. during measurement of the lux level of HPSV and HPMV fixture. 1. Lux meter can measure the actual lux level of both fixture? 2. or it will show false reading for HPSV fixture light as it has only yellow light present. please give me answer

0 Answers Ace Info,

Calibration of controller (pneumatic)

0 Answers CCIE,

what is different between 2,3&4 wire rtd and how much maximum distance using plc to field.

0 Answers

which type of rtd is good for any system,2wire,3wire or 4 wire

9 Answers

I have 475 hart communicator. this is not support any new type of instruments such as tranmitter,fieldvue DVC6200.DVC 200 since i got point out need to upgrade . my questions is how can upgrade new instruments software in my 475 hart communicator. can any answerplease>?

1 Answers

hi i am eswar i want to know the instrumentation interview questations for eil(engineers india ltd) i have applied for engineer post in eil please help in this.my mail id eswar310@gmail.com

0 Answers

what is difference between accelerometer vibration sensor and proximity vibration sensor

3 Answers

What is difference between radial vibration and axial vibration explain in detail .

0 Answers Emerson,

For more Instrumentation Interview Questions Click Here