High-accuracy Graphite Scraper Flowmeter for Measuring Volumetric Flowmeter Solution

The LBJ Series Graphite scraper flowmeter is designed for the high precision requirements of light fuel metering, each flowmeter is a complete and strict performance test after passing the factory, plus regular standard maintenance can maintain its long-term high precision and good reliable performance.

The LBJ Series Graphite scraper flow meter integrated with local display of M1 large word counter, A5/A6 counter or BELZ electronic counter, M1 large word local display and A5/A6 display can show the total cumulative amount of measurement and a single cumulative amount, by supporting the tachometer can also measure the instantaneous flow of fluid through the flow meter, The BELZ electronic counter can display the cumulative flow and instantaneous flow at the same time, and can also realize the pulse and 4-20mA current electrical output, Hart communication or RS485 communication output.

Main features:

The LBJ Series LBJ graphite scraper flowmeter is a kind of high precision positive displacement flowmeter, due to its exquisite and reasonable structure design, has the following characteristics:

1.When the flowmeter is running, the rotor rotates at a constant speed, the rotation is smooth and no fluctuation, low noise, and the fluid in the pipeline has no pressure fluctuation.

2.Graphite material or PTFE material scraper has wear resistance and self-lubrication, small running damping, to ensure the stability of the measurement performance.

3.The range ratio of measurable flow is large, up to 15:1.

4.High measurement accuracy, the basic error is better than ±0.2%, good repeatability.

5.No straight pipe section length restrictions, reduce the installation space.

6.Avariety of types of counters to choose from, to achieve local indication and a variety of electrical signal output remote transmission.

7.Reliable mechanical properties, small maintenance, long machine life.

8.The whole single shell structure design, simple and compact mechanism, small size, easy installation and maintenance.

Structure and working principle:

Technical Specification:

Nominal diameter（mm）：25、40、50、80、100、150

Nominal pressure（MPa）：1.0、1.6，2.0，2.5

Measuring medium：Gasoline, aviation kerosene, diesel and other light fuel

Medium viscosity range：0.6～150mPa.s

Medium temperature range：-20℃～80℃

Working Temperature：-55℃～80℃(Mechanical counter ）、-41℃～80℃(Electronic counter）

Accuracy grade：0.2、0.5

Signal output type：Three-wire pulsing（BGF Explosion isolator、BELZ Electronic counter）、4-20mA electricity（BELZ Electronic counter）

Communication mode：HART or RS485（BELZ Electronic counter）

Working voltage ：24VDC（BGF Explosion isolator、）or 12VDC（BGF -ⅠExplosion isolator）

Display output：8 bits total,5 single-shift accumulations（M1 Large character mechanical return to zero counter),9 bits total cumulative display,Instantaneous flow display,5 single-shift accumulations（BELZ Electronic counter）

Flange standard：GB/T9112-GB/T9124、HG/T20592/HG/T20615、ANSI B16.5,etc，or customized as required: explosion suppression ExdIICT6 Gb

Protection grade：IP66

Flow range：

Signal Transmission for Liquid Flow Meters:

Reliable Remote Signal Output for Liquid Flow Measurement
Liquid flow meters are widely used in water treatment, chemical dosing, food processing, and industrial pipelines. To meet modern monitoring requirements, liquid flow meters are equipped with multiple signal transmission options for long-distance and real-time data collection.

• 4–20 mA Analog Output: Provides stable and interference-resistant transmission over long distances. Ideal for continuous liquid flow monitoring and integration with PLC and DCS systems.

• Pulse / Frequency Output: Suitable for total flow calculation, batching systems, and water consumption measurement in municipal and industrial applications.

• RS485 with Modbus RTU Protocol: Enables digital communication for accurate remote monitoring. Supports multi-point networking and centralized data acquisition.

• HART Communication (Optional): Allows remote configuration, diagnostics, and calibration without interrupting operation.

Application Value:

• Real-time liquid flow monitoring

• Reduced manual meter reading

• Improved data accuracy and traceability

Automation Capability of Liquid Flow Meters:

Seamless Integration into Automated Liquid Control Systems

Liquid flow meters play a key role in automated process control, especially where precise flow regulation is required.

Fully compatible with PLC systems (Siemens, Schneider, Mitsubishi, Allen-Bradley, etc.)

Supports SCADA and DCS platforms for centralized control and visualization

Enables automatic valve and pump regulation based on real-time flow feedback

Suitable for closed-loop control in dosing, mixing, and filling processes

Automation Benefits:

• Improved process stability

• Reduced operator intervention

• Enhanced production efficiency and repeatability

IoT & Smart Monitoring for Liquid Flow Meters:

Smart Liquid Flow Measurement with IoT Connectivity

IoT-enabled liquid flow meters allow users to monitor liquid flow data anytime and anywhere.

• Wireless Communication Options: NB-IoT, LoRaWAN, Wi-Fi, or Ethernet (depending on configuration)

• Cloud Platform Integration: Flow data is transmitted to cloud servers for real-time access, historical analysis, and reporting.

• Remote Monitoring Dashboard: Displays instant flow rate, cumulative volume, alarm status, and system diagnostics.

• Predictive Maintenance Support: Data analytics help detect abnormal flow patterns, leaks, or blockages early.

IoT Advantages:

• Centralized liquid flow management

• Lower maintenance costs

• Support for smart factories and digital water systems

Welcome to ask us for detailed product manuals.