Float gauge

Capacitance probe, conductivity cell, float gauge,... 

FIGURE 20.6 Float gauge placed in a well at the sea-level station Landsort (digital color version on disk). 

Another device which depends on liquid level is the float gauge. In gauges of this type, a float is connected to a counterweight outside the vessel by means of a chain. The weight moves up and down against a scale as the float rises or falls (Fig. 5.5). 

Radar level gauges do not have moving parts and only an antenna is required in the tank. This results in very low maintenance cost. Although the investments costs are higher when compared to float gauges, the cost of ownership will be considerably... 

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