LIQUID LEVEL MEASUREMENT

• Liquid level refers to the position or height of a liquid surface above a datum line.

• Level measurement are made to ascertain the quantity of the liquid held within a container

• Types• Direct method- the varying level is the means to obtain the measurement• Indirect method-variable changing with the liquid level is made to actuate

the indicating mechanism

FLOAT AND TAPE LIQUID LEVEL GAUGE

SIGHT GLASS TYPE

HYDROSTATIC PR DEVICE

FLOAT AND SHAFT MECHANISM

SINGLE VESSEL AIR BUBBLER ARRANGEMENT

FLOAT OPERATED RHEOSTAT

CAPACITIVE LIQUID LEVEL SENSOR(change of capacitance with respect to level of dielectric liquid)

GAMMA RAY LIQUID LEVEL SENSOR