Datasheets for SEGMENsensor clamp-on ultrasonic flow meters U10, U10S PRO, U11, U12, U13 and U20. Download the one-page overview directly, or request the full datasheet for your model.
The SEGMENsensor flow meter downloads page provides a one-page clamp-on ultrasonic flow meter overview as a PDF, and datasheets for six models on request: the U10, U10S PRO and U11 wall-mount meters, the U12 and U13 one-piece meters and the U20 handheld. All are transit-time meters for full pipes carrying a single, sound-conducting liquid.
| Model | Type | Pipe range | Accuracy |
|---|---|---|---|
| U10 | Wall-mount, plastic housing | 25–1200 mm | ±1% |
| U10S PRO | Wall-mount, aluminium housing | 15–1200 mm | ±1% |
| U11 | High-accuracy wall-mount | 15–5000 mm | ±0.5% |
| U12 | One-piece, metal housing | DN15–DN65 | ±2% (±1% after calibration) |
| U13 | One-piece, PP glass-fibre housing | DN15–DN40 | <3% FS (<1.5% FS after calibration) |
| U20 | Handheld, rechargeable battery | 25–1200 mm (1"–48") | ±1% |
Six models: the U10, U10S PRO and U11 wall-mount meters, the U12 and U13 one-piece meters and the U20 handheld — all engineered and branded by SEGMENsensor.
Economical wall-mount transit-time flow meters with a separate transmitter and clamp-on sensors, for full pipes carrying a single, sound-conducting liquid. U10 has a plastic housing with external keys and covers 25–1200 mm pipes. U10S PRO has an aluminium housing with a colour backlit display and covers 15–1200 mm pipes.
High-accuracy industrial transit-time flow meter built on an FPGA chip and the TGA time-measurement algorithm. Sampling reaches 300 times per second, and the meter tolerates intermittent bubbles or impurities lasting up to 5 seconds. It covers pipes from 15 to 5000 mm.
Compact clamp-on meters with the transmitter and sensors in one unit, for small pipes carrying water or another single liquid without solid particles. U12 has a metal housing and covers DN15–DN65. U13 has an acid- and alkali-resistant PP glass-fibre housing for tight spaces and covers DN15–DN40.
Battery-powered handheld transit-time meter with clamp-on sensors and mounting rails, for flow surveys, commissioning and checks on installed meters. It covers 1"–48" (25–1200 mm) pipes; F1 / F1H small-pipe sensors cover DN15–DN40. Readings are logged to an SD card of up to 32 GB at intervals of 1–99999 s.
Every model is available as an E-type heat / cooling (BTU) energy meter. PT1000 temperature sensors on the supply and return pipes are combined with the clamp-on flow measurement to calculate the energy released or absorbed by the water circuit, for heating and air-conditioning systems. On U12 and U13 the E type displays and measures the medium temperature.
Clamp-on ultrasonic flow meters measure liquid flow velocity using the transit-time principle: two ultrasonic transducers, mounted externally on opposite sides of the pipe, alternately transmit and receive ultrasonic pulses. The difference in signal travel time between the upstream and downstream directions is precisely proportional to the average flow velocity inside the pipe — with no contact with the liquid and no pressure drop.
Because the transducers clamp onto the outside of the pipe, installation requires no cutting, no welding, no draining, and no process shutdown. This makes clamp-on meters ideal for retrofitting existing pipelines, verifying meter calibration, and monitoring heat transfer across heat exchangers.
The documents available on this page cover models serving a broad range of industrial and commercial applications:
Municipal water distribution, industrial process water and effluent discharge metering on full pipes; U11 covers pipes up to 5000 mm.
Chilled water and hot water loop balancing, and heat / cooling (BTU) energy metering with PT1000 temperature sensors on every model.
Process liquid monitoring on full pipes carrying a single, sound-conducting liquid. The U13 PP glass-fibre housing resists acids and alkalis. SEGMENsensor flow meters are not explosion-proof.
Non-invasive monitoring of cleaning circuits, process water and beverage lines where hygienic fittings make inline meters impractical.
Process and cooling water monitoring in fab facilities. The clamp-on sensors do not touch the liquid, so the measurement adds no contamination path.
The U20 handheld for field commissioning, flow surveys and energy audits. Its 3000 mAh rechargeable battery runs about 16 hours per charge, and readings are logged to an SD card.
To confirm the right model for your application, identify the following before selecting a brochure:
Not sure which model fits your pipe? Send us your pipe details and our flow engineers will recommend the correct model and sensor type within 24 hours.
