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Expansion tank in a thermal solar plant

Level and pressure measurement of heat transfer fluid(HTF) in expansion tanks

导热油 (HTF) 膨胀罐液位和压力测量
导热油 (HTF) 膨胀罐液位和压力测量

Process data

Measuring task:
Level and pressure measurement
Measuring point:
Measuring range up to:
5 m
Heat transfer fluid
Process temperature:
+300 … +400 °C
Process pressure:
8 … 12 bar
Special challenges:
High temperatures, pressure surges and volume changes


The solar heat captured in the mirror system of a thermal solar plant is transported via a heat transfer fluid (HTF) to the steam generator at the central turbine. The HTF normally has a temperature between 300 °C and 400 °C. There are different containers for the fluid across the plant and the varying temperatures cause volume changes to the HTF that need to be accurately measured to operate the plant safely and profitably.

Your benefit

Highly overload-resistant measuring systems
Cost effective
Accurate level measurement for optimal utilization of the container volumes
User friendly
Easy instrument selection: one sensor version fits all tank sizes

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