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.
Choose Lonnmeter for accurate and intelligent measurement!
In Tank Density Meter
Working Principle
The in-process tank level density meter uses a piezoelectric tuning fork as its core sensing component. This tuning fork is driven by a piezoelectric element to vibrate stably at its inherent natural frequency during operation. When the liquid in the reaction vessel or tank (such as in mixing, distillation, or crystallization processes) comes into contact with the tuning fork, the liquid’s density directly affects the total mass of the tuning fork assembly. This change in total mass triggers a corresponding shift in the tuning fork’s vibration frequency. The meter then converts this frequency change into a measurable signal, thereby calculating the liquid’s density and concentration accurately.
Product Features
• High-Precision Tuning Fork Density Meter: Advanced vibrating fork technology for accurate online density measurement with 0.003 g/ml accuracy.
• Wide Measurement Range: Covers 0-2 g/ml density, supporting high-viscosity fluids up to 2000 cP, ensuring reliable performance in pipelines, tanks, and storage vessels.
• Integrated Temperature Compensation: Built-in sensor for real-time adjustments across -30°C to 120°C operating range.
• 4-20mA Analog Output with Display: Seamless integration with PLC systems, featuring a 4-digit LED display for density, concentration, and temperature readout.
• Explosion-Proof and Durable Design: ExdIIBT6 certified for hazardous environments, constructed from 316 stainless steel (optional Hastelloy).
• Flexible Installation Options: Direct insertion for horizontal/vertical pipelines or flange mounting in tanks.
• Continuous Real-Time Monitoring: Provides uninterrupted online density and concentration data, eliminating lab analysis needs.
• Certifications for Quality Assurance: Customizable CE, FCC and RoHs certificates, ensuring safety and reliability in pharmaceutical, beverage, and oil industries.
• User-Friendly Calibration: Simple water calibration and menu-driven interface for fine-tuning.
Interested? Contact Sales Team
Product Advantages
● Superior accuracy ±0.003 g/ml and repeatability 0.001;
● Broad density measurement range 0-2 g/ml and high viscosity range 0-2000 cP;
● Robust design like explosion-proof certification and corrosion-resistant materials;
● User-friendly integration 4 - 20 mA output and easy on-site calibration;
● Intuitive operation interface and low maintenance demands;
More Applications? Consult Engineers Now
Parameter Selection Table
| In Tank Density Meter | Specification Code | Tuning Fork Density Meter | |||||
| Density Measurement Range | 1 | 0～1 . 5 g/cm³ | |||||
| 2 | 0～2 g/cm³ | ||||||
| X | Others | ||||||
| Process Connection | D1 | 2" 150LB Flange | |||||
| D2 | 2" 300LB Flange | ||||||
| D3 | DN50 PN25 Flange | ||||||
| D4 | DN50 PN40 Flange | ||||||
| K1 | 2" Clamp | ||||||
| K2 | 3" Clamp | ||||||
| M1 | G3/4 Thread | ||||||
| M2 | G1 Thread | ||||||
| XX | Others | ||||||
| Material of Wetted Parts | J1 | 316 | |||||
| J2 | Titanium | ||||||
| J3 | Zirconium | ||||||
| J4 | Hastelloy-C alloy | ||||||
| JX | Others | ||||||
| Surface Treatment | A | Standard Polishing | |||||
| B | Electropolishing | ||||||
| C | PFA Coating | ||||||
| Probe Length | 0 | Standard Length | |||||
| 1 | 100 mm | ||||||
| 2 | 200 mm | ||||||
| 3 | 300 mm | ||||||
| 4 | 400 mm | ||||||
| 5 | 500 mm | ||||||
| X | Others | ||||||
| Accessories | F0 | None | |||||
| F1 | Mounting Bracket | ||||||
| F2 | Bypass Pipeline | ||||||
| F3 | Flow Cell | ||||||
| F4 | Flushing Port | ||||||
| F5 | Flange Support | ||||||
| F6 | Protective Cover | ||||||
| FX | Others | ||||||
Installation
Inline Density Meter Installation Diagram
Customization Options
I. Core Performance Customization
II. Environment and Safety Customization
About Lonnmeter
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.
15 + Years of Experience
Over 15 years of experience in inline instruments manufacturing.
6600 ㎡ Production Area
Over 6000 ㎡ factory and warehouse
400 + Staff
Over 400 experienced staff work for Lonnmeter like R&D, sales, marketing team, etc.
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.
