Transit-Time Ultrasonic Flow Meter (Wall Mount)
Wall-mount transit-time ultrasonic flow meter for 25–6000 mm pipes. Clamp-on, insertion or inline transducers, ±1% accuracy, 4–20 mA, pulse, relay and RS485 Modbus.
- Pipes from 25 mm to 6000 mm
- Clamp-on, insertion or inline pipe section
- ±1% accuracy
- 4–20 mA, pulse, relay and RS485 Modbus
- Optional PT100 inputs for heat/energy metering
Transit-Time Ultrasonic Flow Meter (Wall Mount) specifications
| Principle | Transit-time ultrasonic |
|---|---|
| Accuracy | ±1% |
| Display | 2 × 20 character backlit LCD (English, Chinese, Italian, Turkish) |
| Signal output | 1 × 4–20 mA (0–1 kΩ load, 0.1% accuracy); 1 × OCT pulse (width up to 1000 ms, default 200 ms); 1 × relay |
| Signal input | 3 × 4–20 mA (0.1%) for temperature, pressure or level; PT100 for heat/energy measurement |
| Data interface | Isolated RS485, Modbus; firmware upgrade via computer |
| Transducer cable | Twisted pair, normally under 50 m; RS485 transmission over 1000 m |
| Pipe material | Steel, stainless steel, cast iron, copper, cement, PVC, aluminium, GRP; lined pipe allowed |
| Pipe diameter | 25–6000 mm |
| Straight pipe | Upstream 10D, downstream 5D, 30D from a pump |
| Liquids | Water (hot, chilled, city, sea, waste), sewage with low solids, oils, chemicals, beverages, ultra-pure liquids |
| Liquid temperature | −30 to 160 °C |
| Turbidity | ≤ 10000 ppm, few bubbles |
| Flow velocity | 0 to ±7 m/s |
| Environment | Converter −20 to 60 °C, 85% RH; transducer −30 to 160 °C, submersible to 2 m |
| Power supply | DC 8–36 V or AC 85–264 V (optional) |
| Power consumption | 1.5 W |
| Converter dimensions | 132 × 150 × 85 mm |
Transit-time ultrasonic flow meters measure flow by timing ultrasonic pulses travelling with and against the flow. With clamp-on transducers there is no need to cut the pipe or stop the process, which makes them ideal for retrofits, large-diameter mains and flow audits.
Three installation options
- Clamp-on – transducers strap to the outside of the pipe. No shutdown, no pressure drop.
- Insertion – transducers inserted through hot-tap fittings for large or lined pipes and better signal.
- Inline pipe section – a spool piece with built-in transducers for the highest accuracy.
With PT100 temperature sensors on supply and return, the same meter calculates thermal energy for HVAC chilled-water and hot-water systems.
Typical applications
- Water supply mains and flow audits
- HVAC chilled and hot water, BTU/energy metering
- Treated sewage and plant effluent
- Oils, chemicals and beverages
Send us the application details and we will confirm the right configuration and lead time.
Get a quote for the Transit-Time Ultrasonic Flow Meter (Wall Mount)
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