LWM Wall Mount Ultrasonic Flow Meter
Model LWM
LWM wall mount transit-time ultrasonic flow meter with ±1% accuracy for DN15–DN6000 pipes, using clamp-on, insertion or in-line transducers, IP67 converter, IP68 transducers, 4–20 mA, pulse, relay and RS485 Modbus.
- Brand
- Bont Technologies
- Category
- Flow Meter, Open Channel Flow Meter
Overview
About the LWM Wall Mount Ultrasonic Flow Meter.
The LWM wall mount ultrasonic flow meter measures liquid flow in closed pipes by the transit-time method, with ±1% accuracy across pipe sizes from DN15 to DN6000. The wall-mounted converter works with three transducer types: clamp-on and insertion transducers fit without cutting off the water and cause no pressure loss, while in-line transducers give high accuracy and stability. It handles any single liquid that transmits sound, including hot, chilled, city, sea and waste water, oils, chemicals, plant effluent and beverages. With Pt100 temperature transducers connected, the meter also performs heat and energy measurement.
Features
- Transit-time principle, accuracy ±1%
- Pipe sizes DN15 to DN6000
- Three installation methods: clamp-on, insertion and in-line
- Converter IP67, transducers IP68 (can work under water to 2 m depth)
- High-temperature clamp-on transducers to 160 °C
- Outputs: 4–20 mA, OCT pulse and relay
- Three 4–20 mA inputs for temperature, pressure or level signals
- Isolated RS485 with Modbus; software upgrade by computer
- Heat and energy measurement with Pt100 temperature transducers
- Optional SD card memory for long-term data logging and reporting
- Easy maintenance
Models
- Clamp-on LTS-2 / LTM-1 / LTL-1: DN25–DN100, DN50–DN700, DN300–DN6000, −30 … 90 °C
- High-temperature clamp-on LTS-2-HT / LTM-1-HT / LTL-1-HT: same size ranges, −30 … 160 °C
- Insertion LTC-1 / LTC-2: DN80–DN6000, −30 … 160 °C
- In-line LG1 (DN15–DN32, SS304 thread) and LG2 (DN40–DN1000, carbon steel thread)
- Optional Pt100 temperature transducers LCT-1, LTCT-1, LPCT-1, LSCT-1, accuracy 100 °C ± 0.8 °C
Applications
- Water supply, hot water and chilled water lines
- Sea water and wastewater
- Oil lines: crude, lubricating, diesel and fuel oil
- Chemicals, plant effluent and beverages
- Heat and energy metering
LKS supplies the LWM wall mount ultrasonic flow meter in Malaysia, with installation, calibration and after-sales support. Contact our engineers for transducer selection and a quotation.
Specifications
| Model | LWM |
|---|---|
| Measuring principle | Transit-time ultrasonic |
| Accuracy | ±1% |
| Pipe diameter | DN15 … DN6000 (by transducer type) |
| Flow velocity | 0 … ±7 m/s |
| Display | 2 × 20 character backlit LCD; English, Italian, Turkish, Chinese |
| Analogue output | 1 × 4–20 mA, load 0 … 1 kΩ, accuracy 0.1% |
| Pulse output | 1 × OCT, pulse width up to 1000 ms (default 200 ms) |
| Relay output | 1 |
| Analogue inputs | 3 × 4–20 mA, accuracy 0.1% (temperature, pressure, liquid level) |
| Temperature input | Pt100 for heat/energy measurement |
| Communication | Isolated RS485, Modbus |
| Signal cable | Twisted pair, generally under 50 m; over 1000 m with RS485 |
| Pipe materials | Steel, stainless steel, cast iron, copper, cement, PVC, aluminium, glass-fibre reinforced plastic; lined pipes allowed |
| Straight pipe | Upstream 10D, downstream 5D, 30D from a pump |
| Medium | Single liquids that transmit sound: water, sewage with small particle content, oils, chemicals, plant effluent, beverages |
| Medium temperature | −30 … 160 °C |
| Turbidity | ≤ 10000 ppm, few bubbles |
| Ambient temperature | Converter −20 … 60 °C; transducer −30 … 160 °C |
| Humidity | Converter 85% RH; transducer can work under water to 2 m depth |
| Protection class | Converter IP67, transducer IP68 |
| Power supply | 8 … 36 V DC or 85 … 264 V AC (optional) |
| Power consumption | 1.5 W |
| Converter dimensions | 132 × 150 × 85 mm |
| Options | Pt100 temperature transducers, SD card memory |
Lifecycle support
Installed, calibrated and maintained.
With more than two decades in valves and instrumentation across a diverse range of industries, we keep instruments accurate and valves healthy, because valve health management is vital for plant safety.
- Installation & commissioning
- Calibration & testing
- Maintenance & overhaul
- Dismantling & replacement
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