Answer / aadi

A level transmitter can be an application of a level sensor.
a Capacitive Transducer can be used, usually, as a level
translator(but it should be noted that a level translator is
actually more of an electronic circuitry term!).
The principle of the level translator is based on the change
in capacitance due to the change in the overlapping area of
the dielectric,i.e.,the change in the level of the element
thats being measured,can be associated with that of the
dielectric in a suitable capacitive transducer setup.

Answer / sabry

It's better to say (whats the working principle of level measurement?)

For level measurement we have the following techniques:

1 - differential pressure types (usual differntial presure instrument & bubbler tube).

2 - Sight types (displacer & sight glass).

3 - Sonic type.

4 - Capacitive type.

5 - Radiation type (RADAR & radio active material instrument).

Each type has a specific working principle.

Good Luck

Ahmed Sabry
I&C Senior Engineer
Cell:+2 (0122) 1367310

Answer / s vedpathak

There are different types of level transmitter who works on
different principle exa Displacement type,differential
pressure type,nucleonic type,capacitance type etc.

Displacement type L Tx works on Archimedes principle which
states that the buoyant force on a submerged object is
equal to the weight of the fluid that is displaced by the
object.

similarly in D/P L tx, fluid exerts pressure on HP/LP side
of the capsule & based on the differential head & specific
gravity, the transmitter gives mA output.

Answer / jeet

fluid exerted pressure & dp is measured by xmitter
for level varous mtds used radar,float...

Answer / siva

This question is not clear... Generally speaking, a level
transmitter is the one which is used to measure the level.
we ve many types n each type has distinct characteristics.
so simply speaking, it ll sense n tell the level variation
by either capacitance change, float posion change etc..

Answer / amsal

i think he is asking about principles to measure level by different methods which are,
1. by dp xmtr based on dp principle in case of steam drum or closed tank level.
2. by the principle of head static pressure in case of open tank system.
3. by Archimedes principle which uses buoyant force etc
and others are their helping systems like displacement type level xtmr which using Archimedes principle actually,
and capactive reactance which is using in to measure pressure on the diaphragm actually of DP xtmr not for level measurement.

What is the working principal of Mass flow transmitter?

1 Answers  

why use 4-20mA in the field of instrumentation?

8 Answers  

What do you do as a Engineering person EPC for Sizing&Selecting Control Valve?

1 Answers  

What is the difference between HMI and SCADA and MMI

4 Answers  

hi this is noor i wnt know the procedure and precations errection for PRESSURE AND DP transmitters? how to take impusle line for level and flow?(water and steam) impulse line sizes? and type of material ? plz give me answer / reffer any website ? to me "mail2noor.hyd@gmail.com"

1 Answers  

Question on maha cement

0 Answers  

How we are blocking 40 kg or more pressure through only 6 kg instrument air in control valve 

3 Answers  

purpose of absolute ppressure transmitter applcation?

1 Answers  

Consider a level troll. i am getting a correct value in 4mA and 20mA. the value in the middle(30 to 60%)is disturbed and i am not getting the appropriate value. what is the solution to normalize the level and to get the correct value..

2 Answers   KNPC,

what should be the distance of vibration sensor & to the point where vibration to be measured Ex turbine axial displacement

3 Answers  

what is Instrumentation?

5 Answers   RCL, TCS,

in which principle pressure tx,level tx ,flow tx,temp tx ,control valve works?

0 Answers   IOCL, JSW,