Question

Assuming fluid level is to be determined, how can fluid level be determined using a linear encoder? Include in the group response discussions concerning buoyancy, how to establish the necessary buoyancy, etc.

Answer 1

Optical encoders can be used in level transmitters to find the fluid level. Optical encoder is a type of linear encoder that generates a optical signal which can measure the level in the fluid tank. Optical sensors are kept which can read the position of the disk in the level transmitter setup. The sensors collect the optical signal from the disk. A circuit is present in the setup which can compare signals output in each data. A reference signal is used to enhance acquired data from the encoder.
The transmitter can give optically encoded level measurements with good quality.

The system can be attached to a buoyant object or plumbs which moves due to variable tension accordingly wit the change in level. Change in fluid level gives vertical motion of the object.