A level displacer (a float heavier than the water) is
suspended to a spring balance by means of a stainless steel cable or a rod.
When the displacer is semi-submerged the weight of the displacer changes when
the water level varies and the change in weight is converted into a level
signal that corresponds to the level in the boiler. 0% of water in the level
glass correspond to 4 mA (3 psi) and 100% corresponds to 20 mA (15 psi). This
level measuring method is not so very common onboard ships since the measuring
result is very influenced by the ship’s movements. Ashore, on the other
hand, it works very well.
A level displacer (a float heavier than the water) is
suspended to a spring balance by means of a stainless steel cable or a rod.
When the displacer is semi-submerged the weight of the displacer changes when
the water level varies and the change in weight is converted into a level
signal that corresponds to the level in the boiler. 0% of water in the level
glass correspond to 4 mA (3 psi) and 100% corresponds to 20 mA (15 psi). This
level measuring method is not so very common onboard ships since the measuring
result is very influenced by the ship’s movements. Ashore, on the other
hand, it works very well.