RIB INSTRUMENTS offers Top Mounted Sensor Operated Level Switches for single and multiple level set
points:

This level switch is consists of Switch Assembly, Wire Rope with Spring Assembly and level sensor suspended
on spring. Level sensor having more density than the process liquid is used. Spring selection is determined
by the weight of the level sensor. When level rises & the level sensor is submerged as per the design
consideration and amount of weight equal to the weight of process liquid is displaced. This displacement
relieves the spring tension which is related to tension constant K, causes the actuation of microswitch. This
type of level switch is used for lengths upto 10000 mm.
Series TMLS/3000
This is top mounted type level switch provided single or multiple set points. It uses Level sensors that do
float on the surface of liquids with certain immersed section with respect to design. Working principle of the
level switch is based on a buoyancy principle.