F5E · Fixed flow

Continuous flow. For your system.

A fixed ultrasonic flow meter for pipes from 25 to 1200 mm, powered and connected over one PoE network cable. Readings can be followed from a phone or PC.

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At a glance

What F5E does, in plain words.

What it measures: Liquid flow; How much liquid moves through the pipe.
How it installs: Clamp-on; Sensors fit on the outside of the pipe, so the pipe stays closed.
How it connects: PoE / Ethernet; One Ethernet cable carries both power and data.; Works with MeterTube, the pFlow app and cloud platform.
Pipe sizes: DN25–DN1200; DN is the nominal pipe size, roughly the inside diameter in millimetres.

Why F5E

F5E in short.

F5E is a modular ultrasonic flowmeter that measures liquid flow with Gentos signal processing and a dedicated flow algorithm.

Power and network data share one PoE cable. Readings are stored in the cloud, so you can view and manage them from a phone or a PC, and the program can be updated remotely.

Power and data over one PoE cable
Live data in the mobile app
Remote program updates
Real-time data and charts for energy-efficiency monitoring

Where it is used

Water supply
Water treatment
Irrigation
Boilers
Power plants
HVAC chilled water
Inland aquaculture

How it works

Sound with the flow arrives sooner.

Two sensors on the same side of the pipe take turns sending sound through the water. Sound travelling with the flow arrives slightly sooner than sound travelling against it; the meter turns that time difference into flow, which is why it needs to know your pipe.

How clamp-on ultrasonic measurement works →

Pipe & installation

What the meter needs to know about your pipe.

These are set up on the meter after installation. Pipe size and transducer type are decided when ordering.

Pipe & installation guide pipe materials, sizes, setup checklist

Stainless steel · 2″ example

A smooth metal surface. Clean the spot, add coupling gel, then clamp the sensor on.

60.3mmacross the outside

2.8mmwall thickness

54.8mmacross the inside

Pipe sizes are names, not measurements: a 2″ pipe is 2.375″ across.

The meter needs Pipe size Wall thickness Material: Stainless steel

Technical details standards, OD / ID, both units

Standard: ASME B36.19 · 2″ Sch 10S
Outside diameter (OD): 2.375″ (60.33 mm)
Wall: 0.109″ (2.77 mm)
Inside diameter (ID): 2.157″ (54.79 mm)
Meter parameters: OD · wall · material

This guide shows what a clamp-on meter needs to know about a pipe. It does not mean every model fits every pipe: check the specifications below or ask an engineer.

Specifications

Check the fit before you specify.

The short version is above. These are the specifications published for F5E; values that are still being checked are left out.

Performance

Flow velocity: 0.01–5.0 m/s (0.03–16 ft/s)
Pipe size: 25–1200 mm (1″–48″)
Accuracy: ±1% of reading (0.5–5 m/s)
Repeatability: 0.2%
Pipe material: Carbon steel, stainless steel, PVC

Function

Network: Ethernet with Power over Ethernet (PoE)
Power supply: Power over Ethernet (PoE), IEEE 802.3af/at

Physical

Ambient temperature: −10 °C to 50 °C (14 °F to 122 °F)
Transducer temperature: 0 °C to 80 °C (32 °F to 176 °F)
Ingress protection: Transmitter IP65, transducer IP68
Transducer cable: 9 m (29.5 ft) standard

Need a value that is not listed, or the datasheet for your configuration? Ask an engineer.

What these terms mean

DN: Nominal pipe size, roughly the inside diameter in millimetres (DN50 ≈ 50 mm).
Clamp-on: Sensors strap to the outside of the pipe. No cutting, no shutdown for installation.
PoE: Power over Ethernet: one network cable carries power and data.
LoRaWAN: Long-range, low-power wireless. Readings travel through a gateway to a network server.
Modbus RS485: A wired connection widely used by building and industrial control systems.
4–20 mA: An analogue signal where the current represents the reading.