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Expansion tank in a thermal solar plant

LevelPressure
Expansion tank in a thermal solar plant

Overview

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.

Operating Conditions

Measuring Task
Level and pressure measurement
Measuring Point
Tank
Medium
Heat transfer fluid
Measuring Range
5 m
Temperature
+300 … +400 °C
Pressure
8 … 12 bar

Challenges

  • High temperatures, pressure surges and volume changes

Benefits

  • Reliable: 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

Recommended Products

Recommended Sensors

VEGA VEGAPULS 6X
Industrial Sensors

VEGAPULS 6X

  • Exact measuring results independent of process conditions
  • Maintenance-free operation through non-contact measuring principle
  • Application-oriented configuration enables a simple device selection

VEGA

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VEGA VEGABAR 81
Industrial Sensors

VEGABAR 81

  • Simple adaptation thanks to various configuration options
  • Reliable measurement with temperatures up to 400 °C
  • Reliable measurement independent of foam generation or tank installations

VEGA

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Wireless & Connectivity

VEGA PLICSMOBILE T81
Industrial Sensors

PLICSMOBILE T81

  • Monitor up to 15 sensors with one device
  • Pre-configured data transmission for quick setup
  • Self-sufficient installation without mains power supply

VEGA

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Software & Monitoring

VEGA Inventory System
Software

VEGA Inventory System

Inventory System

VEGA Inventory System (VIS) is a web-based software for real-time data acquisition, visualization, and logistics management of inventory levels in storage tanks and silos. Companies can manage their inventories proactively, ensuring greater flexibility in delivery schedules, expanding optimization options, and reducing stock discrepancies. Precise, real-time visualization of stocks allows deviations to be quickly identified, minimizing financial impact. The system combines reliable VEGA measurement technology for liquids and bulk solids with secure cloud-based or on-premises software, providing the basis for intelligent and strategic decisions for optimal inventory management. VIS supports both internal inventory monitoring and Vendor Managed Inventory (VMI) applications, where suppliers manage customer stock replenishment using real-time level data.

  • Real-time inventory monitoring across all connected storage locations via web browser or mobile app
  • Four visualization modes — Chart, Graphic, Map, and Trend — for comprehensive stock visibility
  • Color-coded traffic light status system (green/yellow/red) for instant stock level assessment

VEGA

View Details
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