Level Measurement calibration
In the Oil and Gas industry level is an important process parameter that needs proper measurement and control. Level measurement is defined as the measurement of the position of an interface between two media such as gas and liquid or between two liquids. Level is a key parameter used for accounting needs and for control. Level measurement may be expressed in units of length or percentage level. In some cases the level measurement is converted to a volume to give a more meaningful indication.
Level measurement is a single dimension from a reference point.
Level Measurement Principle
Level devices operate under three main different principles:
a. The position (height) of the liquid surface
b. The pressure head
c. The weight of the material
There are two methods used to measure the level of a liquid:
1. Direct Methods
2. Indirect or inferential Methods