Specs at a glance
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Max. measurement error
Volume flow:
±3% o.r. for DN 15
±2% o.r. for DN 25 to DN 200
±2% o.r. above DN 200 -
Measuring range
0 to 15 m/s (0 to 50 ft/s)
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Medium temperature range
DN 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) -
Max. process pressure
N/A
Field of application
The proven sensor Prosonic Flow P can be installed close to elbows, expansions or constrictions in the pipe and still maintain the same measurement accuracy. Even measurement of abrasive, corrosive or toxic fluids is no problem for the non-invasive clamp-on device. Prosonic Flow P 500 is mounted without process interruption or opening the pipe. Heartbeat Technology not only ensures measurement reliability and compliant verification but also helps to find the optimal mounting position.
The measuring principle is non-invasive and independent of pressure, density and conductivity
Bidirectional measurement of various fluids, e.g. liquid hydrocarbons and chemicals
Device properties:
Mounting without process interruption
Wide nominal diameter range: DN 15 to 4000 (½ to 160")
Medium temperature: –40 to +170 °C (–40 to +338 °F)
Remote version with up to 3 I/Os
Backlit display with touch control and WLAN access
Standard cable between sensor and transmitter
Benefits
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Constant accuracy even when mounted with short inlet run thanks to FlowDC
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High safety standards – SIL by design, international hazardous area approvals
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Long-term stable signal – maintenance-free permanent mounting from outside with coupling pads
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Reliable measurement on various pipe materials – sensor for GRP and plastic pipes available
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Full access to process and diagnostic information – numerous, freely combinable I/Os
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Reduced complexity and variety – freely configurable I/O functionality
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Integrated verification – Heartbeat Technology
Videos
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Prosonic Flow P 500 with FlowDC function
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The Ultrasonic Flow Measuring Principle
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
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Measuring principle
Ultrasonic flow
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Product headline
Clamp-on flowmeter for limited spaces in process industries with up to 3 I/Os.
Constant accuracy even when mounted with short inlet run thanks to FlowDC.
Bidirectional measurement of various fluids, e.g. liquid hydrocarbons and chemicals. -
Sensor features
High safety standards – SIL by design,
international hazardous area approvals. Long-term stable signal – maintenance-free
permanent mounting from outside with coupling pads. Reliable measurement on various pipe materials – sensor for GRP and plastic pipes available.
Mounting without process interruption. Wide nominal diameter range: DN 15 to 4000 (½ to 160"). Medium temperature: –40 to +170 °C (–40 to +338 °F). -
Transmitter features
Full access to process and diagnostic information – numerous, freely combinable I/Os. Reduced complexity and variety –
freely configurable I/O functionality. Integrated verification – Heartbeat Technology.
Remote version with up to 3 I/Os. Backlit display with touch control and WLAN access. Standard cable between sensor and transmitter. -
Nominal diameter range
Dual channel, 1 or 2 paths : DN 15 to 4000 (1/2 to 160")
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Sensor materials
Clamp on system:
Sensor holder 1.4301/304, 1.4404/316L
Sensor housing 1.4301/304, 1.4404/316L
Strapping bands 1.4301/304, 1.4404/316L -
Measured variables
Volume flow, sound velocity, flow velocity, totalizer
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Max. measurement error
Volume flow:
±3% o.r. for DN 15
±2% o.r. for DN 25 to DN 200
±2% o.r. above DN 200 -
Measuring range
0 to 15 m/s (0 to 50 ft/s)
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Max. process pressure
N/A
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Medium temperature range
DN 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) -
Ambient temperature range
–40 to +60 °C (–40 to +140 °F)
–50 to +60 °C (–58 to +140 °F) optional -
Sensor housing material
N/A
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Transmitter housing material
AlSi10Mg, coated; 1.4409 (CF3M) similar to 316L
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Degree of protection
Sensor remote version: IP68 type 6P
Transmitter remote version: IP66/67, Type 4X enclosure -
Display/Operation
4-line backlit display with touch control(operation from outside)
Optional: WLAN
Configuration via local display and operating tools possible -
Outputs
3 outputs:
4-20 mA HART (active/passive)
4-20 mA (active/passive)
Pulse/frequency/switch output (active/passive)
Double pulse output (active/passive)
Relay output -
Inputs
Status input
4-20 mA input -
Digital communication
HART, Modbus RS485
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Power supply
DC 24 V
AC 100 to 230 V
AC 100 to 230 V / DC 24 V (non-hazardous area) -
Hazardous area approvals
ATEX, FM/CSA, UK Ex
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Other approvals and certificates
Other approvals and certificates
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Product safety
CE, C-tick
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Functional safety
Functional safety according to IEC 61508, applicable in safety-relevant applications in accordance with IEC 61511
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Metrological approvals and certificates
Flowmeter verification for all frequencies except 0.3 MHz, reference line size: 5 MHz DN 50, all other frequencies DN 100
Verification performed on accredited calibration facilities (acc. to ISO/IEC 17025)
Heartbeat Technology complies with the requirements for measurement traceability according to ISO 9001:2015 – Section 7.1.5.2 a
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