Endress-Prosonic Flow 91W

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

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.

Prosonic_Flow_91W_Displ_PG_Schiene___PP_01

Benefits

Low capital investment – cost-effectiveness increases with pipe diameter (up to DN 4000)
No additional leakage paths – external measurement from outside the pipe
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

Field of application

The measuring principle is independent of pressure, density, temperature, conductivity and viscosity
Clamp-on flow measurement of process water, saltwater, demineralized water, drinking water and 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

https://youtu.be/Bx2RnrfLkQg

Features and specifications

Liquids

Measuring Principle	Ultrasonic flow
Product headline	The flowmeter with automatic frequency scan for maximum measuring performance and cost-effective transmitter. Clamp-on flow measurement of process water, saltwater, deminerialized water, drinking water and wastewater.
Sensor features	Low capital investment – cost-effectiveness increases with pipe diameter (up to DN 4000). No additional leakage paths – external measurement from outside the pipe. 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.
Transmitter features	Economical 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.
Nominal diameter range	Single channel, 1 or 2 paths : DN15 to 2000 (1/2 to 80″)
Wetted materials	Clamp on system: Sensor holder 1.4308/CF-8 Sensor housing 1.4301/304 Strapping bands 1.4301/304
Measured variables	Volume flow, sound velocity, flow velocity, signal strength, totalizer
Max. measured 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)
Max. process pressure	N/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 material	N/A
Transmitter housing material	AlSi10Mg, coated
Degree of protection	IP67, type 4X for transmitter IP67 type 4X for sensors IP68 type 6P for sensors (option). IP67 NEMA 4X
Display/Operation	2 lines backlit display with 3 push button
Outputs	1x 4-20 mA HART (active) 1x Pulse/frequency/switch output (passive)
Inputs	N/A
Digital communication	HART
Power supply	AC 85 to 250 V 20 to 28 V DC 11 to 40 V
Hazardous area approvals	Non hazardous area FM, CSA
Other approvals and certificates	Flowmeter verification for DN15, 25, 40, 50 & 100 only EAC marking
Product safety	CE, C-Tick, EAC marking
Metrological approvals and certificates	Flowmeter verification for DN15, 25, 40, 50 & 100 only