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Sonic Max LM series Gas ultrasonic flowmeter
Sonic Max LM series Gas ultrasonic flowmeter
Sonic Max LM series Gas ultrasonic flowmeter
Sonic Max LM series Gas ultrasonic flowmeter
Sonic Max LM series Gas ultrasonic flowmeter
Sonic Max LM series Gas ultrasonic flowmeter

Max Sonic LM Series

Gas ultrasonic flowmeter
The Max Sonic LM Series (FTUG‑1600) gas ultrasonic flowmeter is a high‑precision calibratable metering instrument engineered for natural gas and other gas measurement. Built to withstand harsh industrial operating environments, it adopts multi‑path ultrasonic time‑of‑flight measurement principle. Without any moving wearing parts, it delivers nearly zero pressure drop, excellent long‑term stability and low maintenance cost. It covers DN25‑DN200 sizes and is widely deployed in city gas, oil & gas, petrochemical, power generation, metallurgy and other process industries. It supports bidirectional flow measurement, long‑term historical data logging, multiple signal outputs and both battery & external DC power supply options for land, offshore and underground gas storage working scenarios.
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Specification
Performance Features
  • Multi‑channel measurement design detects multiple flow profiles, effectively eliminating measurement deviations caused by swirl and asymmetric flow, offering built‑in measurement redundancy.
  • Integrated flow straightener delivers low pressure loss and high throughput to guarantee high accuracy and repeatability.
  • Stainless‑steel compact ultrasonic transducers, supporting flow velocity up to 70 m/s, adapt to ultra‑low‑temperature working conditions.
  • 1.0 measurement accuracy class with wide 100:1 turndown ratio, reliable reading even under low‑flow conditions.
  • Historical data storage supports traceable records up to 8.4 years.
  • No moving components, greatly reduces routine maintenance and avoids damage risk from failed rotating parts.
  • Multiple output options: pulse output, 4‑20 mA analog, Modbus‑RS485 communication.
  • Ultra‑low power consumption design. Dedicated lithium battery provides more than 3‑year service life; also supports 7‑25 VDC external wide‑voltage power supply.
  • Local LCD display shows total accumulated volume, standard‑condition flow, working‑condition flow, medium temperature, pressure and battery status.
  • Available for bidirectional flow measurement; compatible for gases containing H₂S, such as biogas and oxygen. Suitable for onshore and offshore installation sites.
Technical parameters
Item Specification
Nominal Diameter DN25 ~ DN200
Accuracy Class 1.0
Turndown Ratio 100:1
Pressure Loss ＜1.0 kPa
Medium Temperature -25℃ ~ +60℃ (special version down to ‑194℃)
Max Working Pressure ≤0.4 MPa
Ambient Condition -25℃ ~ +60℃, RH ≤90%
Power Supply 3.6VDC lithium battery(＞3 years); external 7‑24VDC
Signal Output Pulse, 4‑20 mA(optional), Modbus‑RTU RS485
Display LCD: total flow, standard / working flow, temperature, pressure, battery level
Installation Flange‑mounted; requires specified upstream & downstream straight pipe sections
Applicable Media Natural gas, LPG, air, nitrogen, oxygen, ethylene, biogas and other single‑phase industrial gases
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