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.

Programmable Logic control.

0 Answers   CCIE, NCVT,

how to calibrate the radar transmitter for measuring the exact tank level if tank is having agitator moving continiously because due to agitator tank surface level will vary every time.

2 Answers  

What are the reliability data ,like failure rate etc,for bently nevada systems & vibration probes.

1 Answers  

If an Instrument has 550 ohm internal resistance and the cable used for that instrument is 0.5 ohm per meter resistance. If the voltage is 12volt.How much length cable can be used? Please tell me its Calculation formula.

5 Answers   MOL,

what is the square root flow transmitter formulla ?

2 Answers  

please send me gail format if u have... please help me if u can...

1 Answers  

what is pressure control

1 Answers   GNFC, IBM, Privi Organics,

What is maintenance planning?

3 Answers   Qatar Airlines,

hydrogen purity meter calibrating and commissioning procedure can be explained?

1 Answers  

what is the procedure to callibrate temp controller ,pressure controller,etc. suppose a temp controller showing error 1.5 degree centigrate how can i minimize it.

0 Answers   Sabic, Saudi Aramco Shell Refinery Company SASREF,

what is hall effect?where it is use in power plant?

2 Answers  

What is the constant voltage unit?

0 Answers