Endress+Hauser Prosonic Flow E Heat Ultrasonic Flowmeter
The Endress+Hauser Prosonic Flow E Heat is an industrial ultrasonic heat flowmeter designed for water energy management, particularly for heating and cooling applications across a wide range of industries. It combines ultrasonic flow measurement with a certified, application-focused transmitter to provide reliable energy measurement for thermal management systems.
Prosonic Flow E Heat is designed for applications where accurate and legally compliant measurement of heating or cooling energy is required. It offers recognized custody transfer approvals and meets Accuracy Class 2 requirements according to standards and regulations including MI-004, EN 1434 and OIML R75.
Ultrasonic Heat Flow Measurement
The Prosonic Flow E Heat uses an ultrasonic time-of-flight measuring principle. The measurement principle is independent of pressure, density, temperature and conductivity, making it well suited to water-based heating and cooling systems.
The device measures:
Flow velocity
Sound velocity
Water flow for energy management
Heating and cooling flow applications
Its ultrasonic measurement technology provides dependable flow measurement across a broad operating range.
Certified Heat and Energy Measurement
A major advantage of Prosonic Flow E Heat is its focus on certified thermal energy measurement.
The flowmeter supports Accuracy Class 2 according to internationally recognized requirements including:
It also provides full compliance with custody transfer regulations, making it suitable for applications where measured heating or cooling energy is used for commercial or billing purposes.
Heating and Cooling Energy Management
Prosonic Flow E Heat is optimized for water-based heating and cooling systems.
Typical applications include:
Heating energy measurement
Cooling energy measurement
District heating systems
District cooling systems
Building energy management
Industrial heating systems
Industrial cooling systems
Central utility systems
Thermal energy monitoring
Heat and cold metering
Energy consumption monitoring
By providing reliable flow measurement for thermal energy systems, the instrument can help operators monitor energy consumption and identify opportunities for improved efficiency.
High Turndown Ratio
The Prosonic Flow E Heat provides a measuring range of:
0.025 to 5 m/s
with a maximum volume flow of approximately:
6,360 dm³/min.
The broad measurement range provides dependable measurement under varying operating conditions and supports applications where water flow can change significantly between low-load and high-load periods.
MID 004 Accuracy Class II
The maximum measurement error is specified as:
MID 004 Accuracy Class II (2%).
This makes Prosonic Flow E Heat suitable for applications requiring certified thermal energy measurement and compliance with relevant metering regulations.
Designed for Fully Insulated Pipes
The sensor is optimized for installation on fully insulated pipes.
This design helps support:
Improved energy efficiency
Reduced heat loss
Reliable thermal energy measurement
Better integration into insulated heating and cooling pipelines
Endress+Hauser specifically highlights the potential for energy and cost savings through optimization for fully insulated pipes.
Stainless Steel Sensor Housing
The entire sensor housing is made from stainless steel, providing a robust industrial construction suitable for long-term operation in utility and energy management systems.
The measuring tube uses:
1.4301 (F304) stainless steel
while available process connection materials include 1.4404 (F316L), 1.4571, F304L, S235JR and A105, depending on configuration.
Wide Temperature Range
Prosonic Flow E Heat supports medium temperatures from:
0 to +150 °C (32 to +302 °F).
This makes the flowmeter suitable for a wide range of industrial heating and cooling water applications.
High Pressure Capability
The maximum process pressure is:
PN 25 / ASME Class 150.
This provides compatibility with a broad range of industrial water and thermal energy systems.
Certified Pulse Output
The Prosonic Flow E Heat features a certified pulse output specifically designed for applications requiring controlled and compliant energy measurement.
The transmitter is application-optimized and cost-efficient, while the locked pulse output helps prevent unauthorized device access and supports secure operation in regulated measurement applications.
Simple and Secure Operation
The transmitter is designed for straightforward operation without unnecessary commissioning complexity.
Key operating features include:
No commissioning required
Locked pulse output
Color LED status indication
Direct process status information
Comprehensive diagnostics
Cost-efficient application-specific transmitter
The color LED system allows operators to quickly identify device status without relying on a complex local display.
Compact Industrial Design
Prosonic Flow E Heat is available in nominal diameters:
DN 50 to DN 150 (2" to 6").
The compact construction makes it suitable for industrial utility systems, heating networks and cooling circuits where a dedicated heat flow sensor is required.
Long-Term Measurement Stability
The robust industrial design is intended to provide long-term measurement stability.
This is particularly important in energy management applications, where measurement reliability directly affects:
Energy accounting
Heating and cooling cost allocation
Process efficiency monitoring
Utility management
Commercial energy measurement
Typical Applications
The Endress+Hauser Prosonic Flow E Heat is suitable for:
Heating energy measurement
Cooling energy measurement
Water energy management
District heating
District cooling
Industrial heating systems
Industrial cooling systems
Building energy management
Thermal energy monitoring
Heat metering
Cooling metering
Custody transfer applications
Energy consumption measurement
Utility water measurement
Key Features
Ultrasonic heat flowmeter
Designed for water energy management
Heating and cooling applications
Custody transfer compliant
Accuracy Class 2
MI-004 / EN 1434 / OIML R75
Measuring range 0.025–5 m/s
Maximum flow 6,360 dm³/min
Medium temperature 0 to +150 °C
Process pressure up to PN25 / ASME Class 150
Nominal diameter DN50–DN150
Stainless steel sensor housing
1.4301 (F304) measuring tube
Certified pulse output
High turndown
Optimized for fully insulated pipes
Cost-efficient application-specific transmitter
Long-term measurement stability
Color LED status indication
Comprehensive diagnostics
