Answer Posted / 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

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