Technical Information Proline Prosonic Flow 90U, …

1 Technical Information Proline Prosonic Flow 90U, 90W, 91W, 93C, 93U, 93W. Ultrasonic Flow Measuring System Flowrate measurement for standard applications with drinking water, wastewater and process water Application Your benefits The sensors are perfectly suited for bidirectional Prosonic Flow, the flexible and cost-effective flow measurement of pure or slightly contaminated liquids, measuring system, available as a clamp-on, insertion or regardless of the pressure, temperature, conductivity inline unit, offers you a tailor-made solution. and viscosity.

2 The Proline transmitter concept comprises: Applicable for all homogeneous fluids in acoustically Modular device and operating concept resulting in a transmissive pipes, even with lining higher degree of efficiency For water/wastewater applications Diagnostic ability and data back-up for increased Ideal for retrofitting process quality Installation without process interruption The tried-and-tested Prosonic Flow sensors offer: Approvals for hazardous area: Easy and safe installation and commissioning ATEX, FM, CSA guarantee precise measurement Insensitivity to vibrations Approvals in the food industry/hygiene sector: No pressure loss Drinking water approval for Prosonic Flow C.

3 Optionally available as dual-path version for short Connection to process control system: inlet runs HART, PROFIBUS PA, FOUNDATION Fieldbus Prosonic Flow C with guaranteed and attestable accuracy TI057D/06/ 71026244. Proline Prosonic Flow 90U, 90W, 91W, 93C, 93U, 93W. Table of contents Function and system design.. 3 Degree of protection .. 31. Measuring principle .. 3 Shock and vibration resistance .. 31. System design Measuring system .. 3 Electromagnetic compatibility (EMC) .. 31. System design Clamp-on sensors .. 4. System design Insertion sensors.

4 8 Operating conditions: Process .. 32. System design Inline sensors .. 9 Medium temperature range.. 32. Measuring system .. 10 Medium pressure range (nominal pressure) .. 32. Pressure loss .. 32. Input .. 12. Measured variable .. 12 Mechanical construction .. 33. Measuring range .. 12 Design, dimensions .. 33. Operable flow range .. 12 Weight .. 39. Input signal .. 12 Material .. 40. Output .. 12 Human interface .. 41. Output signal .. 12 Display elements .. 41. Signal on alarm .. 14 Operating elements .. 41. Load .. 14 Remote operation .. 41. Switching output.

5 14 Language group .. 41. Low flow cut off .. 14. Galvanic isolation .. 14. Certificates and approvals .. 42. CE mark .. 42. Power supply .. 15. C-Tick mark .. 42. Electrical connection measuring unit for Ex approval .. 42. Prosonic Flow 90/93 (standard version) .. 15 PROFIBUS PA certification .. 42. Electrical connection measuring unit Prosonic Flow 91 FOUNDATION Fieldbus certification .. 42. (standard version) .. 17 Other standards and guidelines .. 42. Electrical connection measuring unit for Prosonic Flow 90. (PROFIBUS PA) .. 18. Electrical connection measuring unit for Prosonic Flow 93 Ordering Information .

6 42. (PROFIBUS PA) .. 19. Electrical connection measuring unit for Prosonic Flow 93 Accessories .. 43. (FOUNDATION Fieldbus) .. 20. Electrical connection sensor connecting cable Prosonic Flow 90/93 .. 21 Documentation .. 43. Electrical connection sensor connecting cable Prosonic Flow 91 .. 22 Registered trademarks .. 43. Supply voltage (power supply) .. 22. Cable entry .. 22. Cable specifications .. 23. Power consumption .. 23. Power supply failure .. 23. Potential equalization .. 23. Performance characteristics.. 24. Reference operating conditions .. 24.

7 Maximum measured error .. 24. Repeatability .. 25. Operating conditions: Installation .. 26. Installation instructions .. 26. Inlet and outlet run .. 30. Length of connecting cable .. 30. Operating conditions: Environment.. 31. Ambient temperature range .. 31. Storage temperature .. 31. 2 Endress + Hauser Proline Prosonic Flow 90U, 90W, 91W, 93C, 93U, 93W. Function and system design Measuring principle Prosonic Flow operates on the principle of transit time difference. An acoustic (ultrasonic) signal is sent in both directions from one measuring sensor to another.

8 A transit time difference arises because the signal propagation velocity of the sound waves is greater in the direction of flow than against the direction of flow. This difference is directly proportional to the flow velocity. Prosonic Flow calculates the flow from the pipe cross-sectional area and the measured transit time difference. A0005961. v ~ t Q = v A. v = Flow velocity t = Transit time difference v = Volume flow A = Pipe cross-sectional area In addition to the volume flow, the system also always measures the sound velocity of the fluid. The sound velocity can be used to distinguish different fluids or as a measure of fluid quality.

9 Application-specific configuration of the Prosonic Flow can be carried out locally with the aid of the Quick Setup menu. System design The Prosonic Flow ultrasonic flow measuring system always consists of a transmitter and the related measuring Measuring system sensors. All components are available in different versions depending on the application requirements. The transmitter is used to actuate the measuring sensors. The electronics and the software in the transmitter are used to prepare, process and evaluate the sensor signals and to convert the measuring signal to the desired output variables.

10 The measuring sensors work bidirectionally as sound transmitters and sound receivers. The electrical signals of the transmitter are converted to a pressure signal in the measuring sensors and vice versa. Depending on the design, the different sensor versions of ultrasonic flow measuring devices offer unique possibilities in the application. The properties and benefits of the different versions are explained in detail on the following pages. Endress + Hauser 3. Proline Prosonic Flow 90U, 90W, 91W, 93C, 93U, 93W. System design Clamp-on Prosonic Flow W and U.