Advanced Instrumentation for Oil & Gas Operations
Unmatched reliability in extreme high-pressure environments. Engineered for upstream exploration and downstream refinery optimization.
Mastering Complex Fluid Dynamics in Petroleum Processing
The Oil & Gas industry demands uncompromising precision, safety, and durability under the most punishing conditions. Our industrial-grade inline instrumentation is certified for hazardous areas and engineered to optimize upstream production, midstream transport, and downstream refining processes.
Custody Transfer & Flow Precision
Small inaccuracies in oil transfer lead to massive financial discrepancies. Our high-repeatability positive displacement and ultrasonic flow meters ensure precise volume and mass measurement for custody transfer applications.
Crude Oil Dehydration & Interface Control
Unstable density and water cut variations disrupt downstream refining. Continuous online density and concentration monitoring delivers precise phase-separation tracking, preventing water carryover in separators.
Heavy Crude Viscosity Management
High-viscosity crude oil increases pipeline pressure and pumping costs. Real-time inline viscometers continuously monitor viscosity to optimize heat tracer efficiency and heavy oil transport dynamics.
Hazardous Area Compliance (Ex-proof)
High pressures, extreme temperatures, and explosive gases endanger equipment life. Featuring robust flameproof (Ex d IIC T6) housing and rugged sensor designs, our instruments ensure long-term, fail-safe operation in refinery environments.
Application Solutions
Recommended Instruments
Precision Gear Flow Meter — LONN-GF Professional Positive Displacement Flow Meter Series | LONNMETER
The LONN-GF gear flow meter is a precision positive displacement flow meter engineered for accurate volumetric measurement of high viscosity liquids. Utilizing advanced oval gear technology, this mechanical flow meter delivers exceptional repeatability across demanding industrial applications including petroleum, chemical processing, hydraulic systems, and fuel monitoring. With robust 316 stainless steel construction and multiple output options, the LONN-GF series ensures reliable performance in harsh operating environments.
Fluid Type: High viscosity liquids, oils, fuels, chemicals
- Accuracy: ±0.5% FS
- Repeatability: ±0.2%
- Body Material: 316 Stainless Steel / Aluminum Alloy
- Gear Material: PPS / PTFE / 316SS (optional)
- Process Connection: Flange / Thread (customizable)
- Output Signal: 4-20mA / Pulse / RS485 Modbus RTU
- Power Supply: DC 12-24V / AC 220V
- Temperature Range :-20°C to +120°C (standard)
- Pressure Rating: PN16 / PN25 / PN40 (optional)
- Protection Class: IP65 / IP67
Precision Thermal Mass Flow Meter — LONN-GMFC Professional Gas Mass Flow Meter Series | LONNMETER
The LONN-GMFC thermal mass flow meter delivers direct mass flow measurement for industrial gases without temperature or pressure compensation. Using advanced constant temperature difference technology, this thermal gas flow meter achieves wide turndown ratios from 0.5 to 100 Nm/s. Available in both insertion and inline configurations, the LONN-GMFC series supports pipe sizes from DN15 to DN6000, making it ideal for compressed air, natural gas, biogas, and process gas measurement applications.
- Measurement Principle: Thermal Mass (Constant Temperature Difference)
- Fluid Type: Various gases (except acetylene)
- Accuracy: ±1.5% – 2.5% FS
- Flow Velocity Range: 0.5 – 100 Nm/s
- Operating Temperature： Sensor: -40°C to +200°C (standard), +450°C (high temp)
- Operating Pressure： <4.0 MPa (inline), <2.5 MPa (insertion)
- Response Time： 1 second (adjustable)
- Output Signal： 4-20mA, RS-485, HART, FF, Pulse
- Display： 4-line Chinese LCD
- Protection Class： IP67 (integral), IP68 (remote)
LONN-MFC Thermal Mass Gas Flow Meter — Precision Gas Mass Flow Controller | LONNMETER
The LONN-MFC thermal mass gas flow meter is a high-precision instrument engineered for accurate mass flow measurement and control of industrial gases. Featuring proprietary thermal sensing technology combined with optimized algorithms and precision manufacturing processes, this thermal mass gas flow meter delivers industry-leading measurement stability with ultra-low zero drift and temperature drift characteristics—even under extreme operating conditions.
- Measurement Principle： Thermal Dispersion (Constant Temperature Difference)
- Fluid Type： Gas (Air, N₂, O₂, Ar, CO₂, CH₄, etc.)
- Flow Range： 0–150 L/min (N₂ reference)
- Accuracy ：±1.0% S.P. (>30% F.S.) / ±0.3% F.S. (<30% F.S.)
- Output Signal： RS-485 Modbus RTU / EtherCAT / 4-20mA / 0-10VDC / 0-5VDC / ProfiNET / ProfiBUS
- Protection Class： IP40
Smart Clamp on Ultrasonic Flow Meter — LONN-UFM Non-intrusive Liquid Measurement | LONNMETER
The LONN-UFM clamp on ultrasonic flow meter delivers non-intrusive, high-accuracy liquid flow measurement without cutting pipes. Featuring time measurement chip with ≤10ps precision, OLED display with 360° rotation, and magnetic bracket design for easy installation. Supports DN6-DN100 pipes, 4-20mA/RS485 outputs, IP54/IP65 protection. Ideal for chemicals, food, pharmaceuticals, and water treatment.
- Measurement Principle： Time-of-flight ultrasonic (≤10ps time measurement)
- Fluid Type： Liquid (water, chemicals, organic solvents, oils)
- Accuracy： ±2.0% (at 0.3-5.0 m/s)
- Output Signal： 4-20mA + RS485 Modbus-RTU
- Protection Class： IP54 / IP65
$2.4M Annual Savings at Major Oil Pipeline & Refining Hub
By replacing delayed manual sampling with our LONN-GF Series High-Viscosity Flow Meters and inline density sensors, a leading midstream operator achieved continuous tracking of heavy crude oil dynamics. This real-time visibility completely eliminated pipeline pressure spikes and reduced custody transfer discrepancies by 96%.
8 Months
Payback Period
Zero
Custody Disputes