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Petroleum Density Meter Inline

Short Description:

The petro-chemical density meter works stable and efficient in automated process control, offering real-time and accurate density readings for petrol, diesel, crude oils for pipelines, distillation towers, storage tanks, blending lines, refining reactors to ensure density consistency and monitor density shifts. It’s insensitive to external factors like vibration, noise, flow rate and fluid color while maintaining precise measurement.


  • Density Accuracy: ±0.0005 g/cm³; ±0.005 g/cm³; ±0.001 g/cm³
  • Concentration Accuracy: 5‰, 1‰, 0.5‰
  • Temperature Accuracy: 0.01℃
  • Velocity Accuracy: 0.01 m/s
  • Medium Temperature: -20 ~ +80 ℃; -40 ~ +120 ℃
  • Ambient Temperature: -40 ~ 80 ℃
  • Relative Humidity: 0~98%
  • Explosive-Proof: ExdllCTGb
  • Waterproof: IP65
  • Signal Mode: Four wire / Two wire
  • Output Signal: 4~20mA
  • Communication Interface: Modbus (RS485)
  • Operation Pressure: ≤2.0 Mpa
  • Other Output: Profibus-DP, Bluetooth 5.3, Hart,
  • Product Detail

    Product Tags

    The petroleum density meter online is used to classify physical properties of crude oil and refined products and chemicals directly within a pipeline or process stream. It offers continuous density measurement around the clock without time-consuming and costly sampling! The inline density meter for petroleum products outperforms other inline meters in both accuracy and repeatability under real-world operating conditions.

    Product Features

    Utilize non-contact ultrasonic technology without interrupting flow;

    Robust, waterproof and explosion-proof design improves its safety grade;

    Simple mechanical structure & no moving parts;

    Support multiple communication interfaces like RS485, Modbus, Profibus-DP, Bluetooth, Hart, etc.

    High accuracy and reliability ensures consistent results across varying conditions;

    Rugged and fully encapsulated construction;

     High-performance technology for error suppression with high froth content;

    Working Principle

    It operates on the principle of sound speed measuring through flowing fluids. Build-in processing sensor emits and receives high-frequency sound waves. The meter features a transmitter (emitter) and a receiver (detector) positioned at a fixed distance. These are typically made of piezoelectric materials that convert electrical signals into ultrasonic waves and vice versa. The time it takes for the ultrasonic waves to travel through the fluid (transit time) is measured, which varies with fluid physical properties like density, temperature and composition.

    Product Advantages

     Extended operating temperature range of up to 200 °C;

     Withstand process pressures as high as 500 bar (customization needed);

    Intuitive digital interface streamlines continuous density measuring;

    Long-time data acquisition and tracking;

    Three parameters output simultaneously: density, temperature and velocity;

    Application

    ● Quality Control and Blending: Monitors density to ensure consistent product specifications during refining or mixing of fuels.
    Custody Transfer: Converts measured volume to mass for accurate billing, often integrated with flow meters.
    Process Optimization: Detects changes in composition to reduce waste and energy use.
    Compliance: Meets industry standards for trading and transportation of fuels.

    Request a quote today to get tailored pricing and start enhancing your process control!

    Customization Options

    Customize density accuracy up to ±0.0005 g/cm³;

    Select material of sensor: stainless steel, Hastelloy, Zirconium 702, Monel 400, Titanium;

    Probe Length: 92, 150, 250, 500, 1000, 1500, 2000, 2500, 3000mm;

    Available Converters: DIN, ANSI, Clamp, Varivant Flange

    Temperature Range of Sensor: 120, 150, 160, 180, 200 °C;

    Start Your ODM

    Remote Technical Support

    Contact us right now to obtain remote technical support for installation and calibration.

    About Lonnmeter

    Lonnmeter Group
    Lonnmeter is an professional technology company specialized in intelligent inline instruments over 15 years, having grown into a leading manufacturer of precise inline measuring instruments.
    Core Positioning & Product Series
    Lonnmeter focuses on the monitoring of key parameters in industrial processes and supply inline instruments likedensitometers, flowmeters, level meters (or level transmitters), viscometers and pressure transmitters to optimize industrial operation. These products enable real-time and accurate measurement of parameters such as flow rate, density, concentration, viscosity and pressure, and are widely suitable for the production process needs of multiple industries including food, chemical, cosmetics, energy, petrochemical, mining and metallury.

    Vision of Lonnmeter
    In 3-5 years, Lonnmeter aspires to become the leader of China's new-generation wireless intelligent instruments!
    In 5-10 years, Lonnmeter aspires to become China's leader in intelligent instruments and replace imported instruments with its own products!
    In 10-20 years, Lonnmeter aims to make its products available to more people around the world and become a global leader in new-generation intelligent instruments!
    Become the global leader of new-generation intelligent instruments.

    over 15 years experience

    15 + Years of Experience

    Over 15 years of experience in inline instruments manufacturing.

    production area warehouse

    6600 ㎡ Production Area

    Over 6000 ㎡ factory and warehouse

    400+staff

    400 + Staff

    Over 400 experienced staff work for Lonnmeter like R&D, sales, marketing team, etc.

    1000-1500 monthly output

    1000 -1500 Units / Month

    Monthly production of inline instruments is over 1000 per month. All products undergo strict quality inspection.

    Lonnmeter -- Manufacturer of Inline Instruments for Process Control
    Lonnmeter (hereinafter referred to as "the Group") has grown into a competitive manufacturer of inline instruments over the past 15 years. All inline instruments undergone strict quality inspection and calibration before shipment to customers.
    With joint efforts of R&D department and sales team, all inline instruments for process control escalade continuously and stand up to special and complex industrial conditions, solving numerous tricky problems and improving process efficiency while reducing costs.

    Company Advantages
    As a leading intelligent industrial instrument manufacturer, Lonnmeter delivers targeted, value-driven solutions for industrial process control with the following core strengths:

    Complimentary Operating Condition Analysis
    Our engineer team provides free professional analysis of medium properties, pressure/temperature ranges, bubble content and the like, offering data-backed recommendations to optimize parameter settings and avoid equipment selection risks.

    Customized Process Control Solutions
    Our portfolio is offered based on provided operating conditions and avoid all negative factors caused inaccurate measurements like flow rate, particle size and bubble content of measured media. Keep all inline instruments working in optimal status.

    Flexible OEM&ODM Services We provide tailored OEM and ODM services dedicated to inline industrial instruments. Our OEM services cover customizable packaging, operation manuals and brand logos, while ODM solutions support flexible customization of core materials, measurement parameters, product structures and functional configurations, fully meeting all your special application needs.

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