Max. measurement errorVolume flow (standard): ‐ ±1.0 % o.r. for 3 to 40 m/s (9.84 to 131.23 ft/s) ‐ ±2 % o.r. for 0.3 to 3 m/s (0.98 to 9.84 ft/s) Volume flow (optional calibration): ‐ ±0.5 % o.r. for 3 to 40 m/s (9.84 to 131.23 ft/s) ‐ ±1.0 % o.r. for 0.3 to 3 m/s (0.98 to 9.84 ft/s) Corrected volume flow (standard): ‐ ±1.5 % o.r. for 3 to 40 m/s (9.84 to 131.23 ft/s) ‐ ±2.5 % o.r. for 0.3 to 3 m/s (0.98 to 9.84 ft/s) Corrected volume flow (optional calibration): ‐ ±1.0 % o.r. for 3 to 40 m/s (9.84 to 131.23 ft/s) ‐ ±1.5 % o.r. for 0.3 to 3 m/s (0.98 to 9.84 ft/s) Sound Velocity: ±0.2 % o.r.
Measuring rangeGas: 0.3 m/s to 40 m/s
Medium temperature range-50 to 150 °C (-58 to +302°F) -50 to 100 °C (-58 to +212°F) with integrated pressure cell
Max. process pressure0.7 to 101 bar a (10.15 to 1464.88 psi a)
Max. measurement errorVolume flow (standard): ‐ ±1.5 % o.r. for 3 to 30 m/s (9.84 to 98.4 ft/s) ‐ ±3 % o.r. for 1 to 3 m/s (3.28 to 9.84 ft/s) Volume flow (option): ‐ ±0.1 % o.f.s. for 0.3 to 1 m/s (0.98 to 3.28 ft/s) ‐ ±1.5 % o.r. for 1 to 30 m/s (3.28 to 98.4 ft/s)
Measuring rangeStandard: 1 to 30 m/s (3.28 to 98.4 ft/s) Option: 0.3 to 30 m/s (0.98 to 98.4 ft/s)
Medium temperature range0 to +80 °C (+32 to +176 °F)
Max. measurement errorVolume flow (standard): ‐ ±1.0 % o.r. for 3 to 40 m/s (9.84 to 131.23 ft/s) ‐ ±2 % o.r. for 0.3 to 3 m/s (0.98 to 9.84 ft/s) Volume flow (optional calibration): ‐ ±0.5 % o.r. for 3 to 40 m/s (9.84 to 131.23 ft/s) ‐ ±1.0 % o.r. for 0.3 to 3 m/s (0.98 to 9.84 ft/s) Corrected volume flow (standard): ‐ ±1.5 % o.r. for 3 to 40 m/s (9.84 to 131.23 ft/s) ‐ ±2.5 % o.r. for 0.3 to 3 m/s (0.98 to 9.84 ft/s) Corrected volume flow (optional calibration): ‐ ±1.0 % o.r. for 3 to 40 m/s (9.84 to 131.23 ft/s) ‐ ±1.5 % o.r. for 0.3 to 3 m/s (0.98 to 9.84 ft/s) Sound Velocity: ±0.2 % o.r.
Measuring rangeGas: 0.3 m/s to 40 m/s
Medium temperature range-50 to 150 °C (-58 to +302°F) -50 to 100 °C (-58 to +212°F) with integrated pressure cell
Max. process pressure0.7 to 101 bar a (10.15 to 1464.88 psi a)
Max. measurement errorVolume flow: ±3% o.r. for DN 15 ±2% o.r. for DN 25 to DN 200 ±2% o.r. above DN 200
Measuring range0 to 15 m/s (0 to 50 ft/s)
Medium temperature rangeDN 15 to 65 (½to 2½"): –40 to +150°C (–40 +302 °F) DN 50 to 4000 (2 to 160"): –40 to +170°C (–40 to +338 °F) DN 50 to 600 (2" to 24"): 150°C to 550°C (+302 to +1022 °F)
Measuring rangeConcentration According to concentration app data sheet, maximum 0 to 100 % Sound velocity 600 to 2000 m/s Temperature maximum 0 to +100 °C (32 to +212 °F) Acoustic Density 0.7 to 1.5 g/cm³
Measuring rangeConcentration According to concentration app data sheet, maximum 0 to 100 % Sound velocity 600 to 2000 m/s Temperature maximum 0 to +100 °C (32 to +212 °F) Acoustic Density 0.7 to 1.5 g/cm³
Medium temperature range0 to 100 °C (32 to 212 °F)
Process temperature0 to 100 °C (32 to 212 °F)
Max. process pressuremax. 16 bar at 20 °C (232 psi at 68 °F)
Process pressuremax. 16 bar at 20 °C (232 psi at 68 °F)
Measuring rangeConcentration According to concentration app data sheet, maximum 0 to 100 % Sound velocity 600 to 2000 m/s Temperature, maximum 0 to +100 °C (32 to +212 °F) Acoustic density 0.7 to 1.5 g/cm³
Measuring rangeConcentration According to concentration app data sheet, maximum 0 to 100 % Sound velocity 600 to 2000 m/s Temperature maximum 0 to +100 °C (32 to +212 °F) Acoustic Density 0.7 to 1.5 g/cm³
Medium temperature range0 to 120°C (32 to 248 °F)
Process temperature0 to 120°C (32 to 248 °F)
Max. process pressuremax. 16 bar at 20 °C (232 psi at 68 °F)
Process pressuremax. 16 bar at 20 °C (232 psi at 68 °F)
Wetted materialsStainless steel1.4404 (316L)
Ultrasonic flowmeters
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Using ultrasonic waves, the flow volume of a wide variety of gases and liquids can be measured reliably – independent of electrical conductivity, pressure, temperature or viscosity. In applications that require traceable and guaranteed accuracy, inline ultrasonic sensors are preferred for use. Clamp-on ultrasonic sensors, on the other hand, are installed on the outer wall of the pipe and thus also enable temporary measurements or a retrofitting.
For retrofitted installation without interrupting the process
Aggressive fluids can be measured without any problems, even under high pressure
Suitable for pipes made of plastic, steel, cast iron composite materials (lined/unlined)
For pipe diameters up to DN 4000 (156")
In-line sensors
Guaranteed accuracy thanks to traceable factory calibration
Robust industrial design in accordance with ASME and EN
Short inlet runs
For pipelines up to DN 300 (12")
The Ultrasonic Flow Measuring Principle
Ultrasonic flow measuring principle
Swimming against the flow requires more power and more time than swimming with the flow. This simple fact is the basis for ultrasonic flow measurement according to the “differential transit time” method: This method uses two sensors, set opposite each other in the measuring tube. Each sensor can alternately transmit and receive ultrasonic signals, while simultaneously measuring the signal transit time.
As soon as the fluid in the tube starts to flow, the signals are accelerated in the direction of flow but delayed in the opposite direction. The differential transit time, measured by the two sensors, is directly proportional to the flow rate.
Benefits
Measurement independent of pressure, density, temperature, conductivity and viscosity (for homogeneous fluids)
Free pipe cross-section, no pressure loss
No moving parts, minimum maintenance and upkeep
Long service life, no abrasion or corrosion from the fluid
In-line or clamp-on design for stationary or temporary flow measurements
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Flow measuring technologies for liquids, gases and steam
Products and services of our flow measuring technologies for liquids, gases and steam at a glance
Proline in industries - the ideal device for each industry
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Advantages of clamp-on flowmeters in industrial processes
For maximum flexibility: Clamp-on flowmeters for noninvasive measurements without process interruptions –maintenance-free for a lifetime and many other advantages
%20with%20flange%20connections%20for%20accurate%20measurement%20of%20natural%20and%20process%20gas%20-%20PP01.jpg "Picture of ultrasonic flowmeter Proline Prosonic Flow G 300 / 9G3B - Highly robust gas specialist")
%20with%20flange%20connections%20for%20energy%20management%20of%20water%20across%20all%20industries%20-%20PP01.jpg "Picture of Ultrasonic flowmeter Prosonic Flow E Heat (DN50 / 2\") for water energy management")
%20with%20flange%20connections%20for%20accurate%20measurement%20of%20natural%20and%20process%20gas%20-%20PP01.jpg "Picture of ultrasonic flowmeter Proline Prosonic Flow G 500 / 9G5B - Highly robust gas specialist")
