Endress+Hauser Proline Prosonic Flow B 200 Ultrasonic Flowmeter
The Endress+Hauser Proline Prosonic Flow B 200 is an ultrasonic flowmeter specifically designed for wet biogas and digester gas measurement under fluctuating process conditions. It combines ultrasonic flow measurement with integrated real-time methane fraction analysis, allowing users to monitor both gas flow and gas quality with a single instrument.
The Prosonic Flow B 200 is particularly suitable for biogas plants, wastewater treatment plants and landfill gas applications, where accurate gas measurement, methane monitoring and process transparency are important for energy balancing and process optimization.
Accurate Wet Biogas Measurement
The Prosonic Flow B 200 uses an ultrasonic transit-time measuring principle optimized for gas applications. Its measurement principle is largely unaffected by gas composition, making it suitable for biogas with changing gas characteristics.
The instrument is designed for:
Wet biogas measurement
Digester gas measurement
Landfill gas measurement
Gas flow monitoring
Methane monitoring
Energy balancing
Biogas process control
Integrated Real-Time Methane Measurement
One of the main differentiating features of the Prosonic Flow B 200 is its integrated real-time methane fraction analysis.
The instrument can continuously monitor:
Volume flow
Corrected volume flow
Corrected methane volume flow
Methane fraction
Energy flow
Calorific value
Temperature
This makes the B 200 more than a conventional gas flowmeter. It provides both flow measurement and gas-quality information, helping operators understand the actual methane content and energy potential of biogas.
Optimized for Low-Pressure Gas
Prosonic Flow B 200 is specifically designed for low-pressure gas applications.
Its specialized sensor design enables reliable measurement under process pressures from:
0.7 to 11 bar a
with a medium temperature range of:
0 to +80 °C (32 to +176 °F).
This makes it suitable for biogas systems where gas pressure is relatively low and process conditions can fluctuate.
Full-Bore Design with No Additional Pressure Loss
The Prosonic Flow B 200 uses a full-bore design, which means the flowmeter does not introduce additional pressure loss into the gas pipeline.
This is particularly beneficial in low-pressure biogas systems because unnecessary pressure loss can negatively affect overall system performance.
Wide Gas Flow Measuring Range
The standard measuring range is:
1 to 30 m/s
An optional configuration extends the range down to:
0.3 to 30 m/s.
The standard volume flow measurement error is:
±1.5% o.r. at 3 to 30 m/s
±3% o.r. at 1 to 3 m/s
With the optional low-flow configuration:
±0.1% o.f.s. at 0.3 to 1 m/s
±1.5% o.r. at 1 to 30 m/s
Multivariable Biogas Measurement
The Prosonic Flow B 200 is a multivariable measuring device, combining flow, temperature and methane measurement.
This allows a single instrument to provide information required for:
Biogas flow monitoring
Methane production monitoring
Energy calculation
Gas quality monitoring
Process optimization
Energy balancing
The ability to obtain multiple process variables from one measurement point can simplify instrumentation and reduce the need for separate methane and flow measurement devices.
Loop-Powered Technology
The B 200 features loop-powered technology, simplifying installation and wiring for applications where a compact and efficient power arrangement is preferred.
The transmitter supports 4–20 mA HART and other output configurations, with supply voltage depending on the selected communication and output configuration.
Robust Transmitter Design
The Prosonic Flow B 200 features a robust dual-compartment transmitter housing with a separate connection compartment.
The display provides:
4-line backlit display
Touch control
External operation
Local configuration
Process information
Diagnostic information
The external touch operation allows configuration without unnecessarily opening the device housing, supporting safer operation in industrial environments.
Flexible Pipe Sizes
The Prosonic Flow B 200 is available in different nominal diameter configurations:
Single-path: DN50 and DN80
Two-path: DN100 to DN200
This allows the instrument to accommodate different biogas pipeline sizes and flow requirements.
Hazardous Area Approvals
For applications requiring hazardous-area protection, Prosonic Flow B 200 is available with worldwide approvals including:
ATEX
IECEx
cCSAus
NEPSI
INMETRO
JPN
EAC
KC
Heartbeat Technology
The Prosonic Flow B 200 incorporates Endress+Hauser Heartbeat Technology for integrated verification and diagnostics.
This provides additional insight into device condition and measurement performance and supports reliable operation, process safety and maintenance planning.
Typical Applications
The Endress+Hauser Proline Prosonic Flow B 200 is suitable for:
Biogas plants
Wastewater treatment plants
Digester gas measurement
Landfill gas measurement
Wet biogas flow measurement
Methane fraction measurement
Gas quality monitoring
Energy balancing
Biogas energy management
Gas flow monitoring under fluctuating conditions
Low-pressure gas measurement
Key Features
Ultrasonic gas flowmeter
Specialized for wet biogas and digester gas
Integrated real-time methane fraction measurement
Measures flow, temperature and methane
Corrected methane volume flow and energy flow available
Measuring range 0.3–30 m/s with option
Standard range 1–30 m/s
No additional pressure loss
Full-bore design
Low-pressure gas optimized
Medium temperature 0 to +80 °C
Process pressure 0.7–11 bar a
Loop-powered technology
DN50–DN200 configurations
4–20 mA HART
Robust dual-compartment housing
Touch-control display
Worldwide hazardous-area approvals
Heartbeat Technology
