Endress+Hauser Proline Prosonic Flow 91W ultrasonic flowmeter

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Endress+Hauser Proline Prosonic Flow 91W ultrasonic flowmeter
Max. measurement errorVolume flow:
±3% o.r. for DN15
±2% o.r. for DN25 to 200
±2% o.r. above DN200
Measuring range0.3 to 10 m/s (1 to 33 ft/s)
Medium temperature range-20 to +80°C (-4 to +176 °F)
0 to +130°C (32 to +265 °F) option
Max. process pressureN/A
Wetted materialsClamp on system:
Sensor holder 1.4308/CF-8
Sensor housing 1.4301/304
Strapping bands 1.4301/304
Measuring principleUltrasonic flow
Product headlineDevice with automatic frequency scan for maximum measuring performance and cost-effective transmitter.
Clamp-on flow measurement of process water, salt water, demineralized water, drinking & wastewater.
Sensor featuresLow capital investment – cost-effectiveness increases with pipe diameter (up to DN 4000/156"). Long-term stable signal – maintenance-free permanent mounting from outside with coupling pads. Process transparency – diagnostic capability.
Medium temperature: –20 to +80 °C (-4 to +176 °F). Degree of protection IP68 (Type 6P enclosure) for pipes under water. Shock and vibration resistance according to IEC 68-2-6.
Transmitter featuresEconomical transmitter – designed for easy applications. Fast and reliable commissioning – Quick Setup menu for installation. Automatic recovery of data for servicing.
Aluminium field transmitter housing. 2-line display with push buttons. HART.
Nominal diameter rangeSingle channel, 1 or 2 paths : DN15 to 2000 (1/2 to 80")
Wetted materialsClamp on system:
Sensor holder 1.4308/CF-8
Sensor housing 1.4301/304
Strapping bands 1.4301/304


Measured variablesVolume flow, sound velocity, flow velocity, signal strength, totalizer
Max. measurement errorVolume flow:
±3% o.r. for DN15
±2% o.r. for DN25 to 200
±2% o.r. above DN200
Measuring range0.3 to 10 m/s (1 to 33 ft/s)
Max. process pressureN/A
Medium temperature range-20 to +80°C (-4 to +176 °F)
0 to +130°C (32 to +265 °F) option
Ambient temperature range-20 to +60 °C (-4 to +140 °F)
Sensor housing materialN/A
Transmitter housing materialAlSi10Mg, coated
Degree of protectionIP67, type 4X for transmitter
IP67 type 4X for sensors
IP68 type 6P for sensors (option). IP67 NEMA 4X
Display/Operation2 lines backlit display with 3 push button
Outputs1x 4-20 mA HART (active)
1x Pulse/frequency/switch output (passive)
InputsN/A
Digital communicationHART
Power supplyAC 85 to 250 V
20 to 28 V
DC 11 to 40 V
Hazardous area approvalsNon hazardous area
FM, CSA
Other approvals and certificatesFlowmeter verification for DN15, 25, 40, 50 & 100 only
EAC marking
Product safetyCE, C-Tick, EAC marking
Metrological approvals and certificatesFlowmeter verification for DN15, 25, 40, 50 & 100 only
Returns Policy

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