how is a displacer type level transmitter calibrated.explain the method?
Answer Posted / haridass kwt
To calibrate the displacer type LTs by fixed in the w/bench,
First remove the head, clean displacer and chamber and
assemble,
fix the calibration setup (drain isolation, clear tube and
marked scale),
Calculate 100% position of fluid filling, by the Sp.
gravity of the fluid where the LT being used. (Ex: If sp.gr
is 0.8, then the 80% of the displacer height to be marked
in chamber due to the water used for calibration), and mark
every 25% in chamber ouside for reference.
Fill the water and check the transmitter/board/sensor
response approximately.
Fill the water till the displacer touches. and chk 0% and
adjust to 4mA.
Fill the water till 100% to check span and adjust 20mA.
(If the LT s not responding, replace LVDT/board and chk)
Repeat zero and span check 4-5 times and the chk every 25 %
rising and falling.
If ok, the prepare the calibration report and tag it.
Is This Answer Correct ? | 11 Yes | 1 No |
Post New Answer View All Answers
What is difference between Ionization heat and bimetallic heat
how pressure transmitter work, what is its principal to measure and how its generate signal. for pressure transmitterinstallation which precautions must be taken ??
what is actual drum level and compensated drum level?
How to do gas analysers calibration in AUTO and Manually by using zero and span gas?
What is Alpha & Beta fctors related to Orifice Plate & its relation with flow?
how to relay switch sense the fault?
What is the difference between working pressure and calibration pressure of a control valve
Why grounding is necessary? Give example with diagram.
Decibel.
sir, i preparing hpcl,ongc,barc,hal exams(instrumentation engg)pls send a placement papers
what is o2 analyzer and how it measured ,what is the role of this analyzer in cfbc boiler...
what is the reset offset and control system in instrumentation
Hi, I am Newely Joined in Construction company instrument engineer? Any one can Plz tell me How can I advanced preparation for Releated Engineering and construction Documents?
For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?
How flow can be measured with dp?