Picture of ultrasonic flowmeter Proline Prosonic Flow 91W for water and wastewater applications

Proline Prosonic Flow 91W
ultrasonic flowmeter

Device with automatic frequency scan for max. measuring performance and cost-effective transmitter

91W

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Proline Prosonic Flow 91W for water and wastewater applications

Specs at a glance

Max. measurement error

Volume flow:
±3% o.r. for DN15
±2% o.r. for DN25 to 200
±2% o.r. above DN200
Measuring range

0.3 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 pressure

N/A
Wetted materials

Clamp on system:
Sensor holder 1.4308/CF-8
Sensor housing 1.4301/304
Strapping bands 1.4301/304

See all specifications

Field of application

The Prosonic Flow W clamp-on sensor is specially designed for water and wastewater applications. Combined with the cost-effective Prosonic Flow 91 transmitter with push buttons, Prosonic Flow 91W is ideally suited for flow monitoring in the water industry.

The measuring principle is independent of pressure, density, temperature, conductivity and viscosity
Clamp-on flow measurement of process water, salt water, deminerialized water, drinking & wastewater.

Device properties:

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
Aluminium field transmitter housing
2-line display with push buttons
HART

Benefits

Low capital investment – cost-effectiveness increases with pipe diameter (up to DN 2000)
Long-term stable signal - maintenance-free permanent mounting from outside with coupling pads
Process transparency – diagnostic capability
Economical transmitter – designed for easy applications
Fast and reliable commissioning – Quick Setup menu for installation
Automatic recovery of data for servicing

Videos

The Ultrasonic Flow Measuring Principle

Predecessor

Prosonic Flow Clamp On 90W

DDU18

Success stories

Reliable flow measurement despite difficult conditions

Schluchseewerk AG wanted to record and optimize the efficiency of its turbines at the pumped storage plant in Wehr. Endress+Hauser offers the optimum solution with its ultrasonic clamp-on flowmeter.
Read the full story
Smart monitoring system for potable water treatment

With Netilion Network Insights, Oberzent's water masters now see all relevant data points of their water system on a cloud-based dashboard without having to drive to the plants.
Read the full story
Real-time analysis of mature oil wells

GPsol, together with Endress+Hauser, developed a system that individually measures each component of extraction wells and provides as much information as possible about the current flow.
GPsol Wellchecker on a pumpjack
Wastewater measurement that works

Check out how Hofbrauhaus Freising samples wastewater with Promag L 400 in a nearly inaccessible shaft.
Read the full story
Singapore’s bunkering industry breaks new ground

Marine solutions provider Metcore International relies on Endress+Hauser’s innovative Master Meter Solution
Read the full story

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

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Reliable, robust and low-maintenance

Technical excellence

Simplicity

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High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

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CAD drawings CAD drawings

Available once configuration is complete

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CAD drawings are only available on our desktop experience

Optional add-ons

Please use the individual configurator to continue

Individual configuration

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Often bought together

Accessories

Transmitter 91/90/93, Mounting set

See more accessories

	EN
06/12/2023
19/08/2011
01/02/2010
01/04/2006

Language:	English
Version:	06/12/2023
File size:	5.4 MB
File name:	BA00100DEN_1423.pdf

	EN
06/12/2023
19/08/2011
01/02/2010

Language:	English
Version:	06/12/2023
File size:	1.8 MB
File name:	TI00105DEN_1423.pdf

	EN
06/12/2023
19/08/2011
01/02/2010

	EN
01/04/2006
01/05/2005
15/10/2003
01/12/2002

	EN
01/11/2006

	EN
13/02/2012
19/08/2011
26/04/2010

	EN
15/10/2024
01/10/2018
28/06/2012

Proline Prosonic Flow 91Wultrasonic flowmeter

Device with automatic frequency scan for max. measuring performance and cost-effective transmitter

Specs at a glance

Max. measurement error

Measuring range

Medium temperature range

Max. process pressure

Wetted materials

Field of application

Benefits

Videos

Predecessor

Success stories

Reliable flow measurement despite difficult conditions

Smart monitoring system for potable water treatment

Real-time analysis of mature oil wells

Wastewater measurement that works

Singapore’s bunkering industry breaks new ground

Measuring principle

Product headline

Sensor features

Transmitter features

Nominal diameter range

Wetted materials

Measured variables

Max. measurement error

Measuring range

Max. process pressure

Medium temperature range

Ambient temperature range

Sensor housing material

Transmitter housing material

Degree of protection

Display/Operation

Outputs

Inputs

Digital communication

Power supply

Hazardous area approvals

Other approvals and certificates

Product safety

Metrological approvals and certificates

Back

Prosonic Flow 91 Operating Instructions

Proline Prosonic 91W Technical Information

Proline Prosonic 91W Technical Information

Prosonic Flow 90U, 90W, 91W, 93C, 93U, 93W Technical Information (SI units)

Prosonic Flow 91 Operating Instructions

Proline Prosonic Flow 90, 91, 93 Sonderdokumentation / Special Documentation

Proline Prosonic Flow 91W Brief Operating Instructions

EA Replacing cover and O-ring

Safety Instructions for Spare Parts Installation Instructions

Replacing T-DAT Installation Instructions

Replacing transmitter parts Installation Instructions

EA Permanent Coupling Pad

Back

Kit Main-PCB 91W 85-250VAC

Kit Main-PCB 91W 20-28VAC 11-40VDC

Kit 10 fuses 1.0 A/250 slow

Kit 10 fuses 1.6 A/250 slow

Kit display 10/91W with keyboard

Kit T-DAT Transmitter Data Chip

Kit Ground terminal/Cover clamp

Kit Terminal Block 10/1YH/91W

Kit cover 10/91W with window

Kit cover 10/1YH/91W blind version

Kit 10 ext. M20x1.5/G 1/2" (plug PVC)

Kit 10 ext. M20x1.5/NPT 1/2" (plug PVC)

Kit 10 cable glands M20x1,5 grey

Kit PCB/Display carrier 10/91W

Kit cable glands Wall holding 91W

Kit Wall holding Prosonic 91W cpl.

Kit housing gasket 91W field housing

Prosonic Flow W, flow sensor set

Prosonic Flow 91/93/93T,sensor cable set

Prosonic Flow W/P, sensor holder set

Prosonic Flow W/P, install.set Clamp On

Prosonic Flow 91/93 W/P, conduit adapter

Coupling medium, Prosonic Flow

Transmitter 91/90/93, Mounting set

Proline Prosonic Flow 91W
ultrasonic flowmeter