Description
1、Product Overview of Liquid Vortex Flowmeter
The KNKE (USA) liquid turbine flowmeter is optimized in design with a simple structure, lightweight, high accuracy, good repeatability, and high sensitivity. It is easy to install, maintain, and use, making it a new generation of turbine flowmeters. It is widely used to measure liquids in closed pipelines that do not corrode stainless steel (1Cr18Ni9Ti, 2Cr13), corundum (Al2O3), and hard alloy, without fibers or particles. The liquid’s kinematic viscosity under working temperature should be less than 5×10-6m²/s. For liquids with kinematic viscosity greater than 5×10-6m²/s, calibration with the actual liquid can be performed. When used with special display instruments, it can also perform quantitative control, over-limit alarms, etc., making it an ideal instrument for flow measurement and energy conservation.
2、Selection Parameters for Liquid Turbine Flowmeter
| Parameter | Details |
| Specifications | DN25 to DN600 (1 inch to 24 inches) |
| Fluid Type | Liquid |
| Linearity (Standard) | 1 inch to 2.5 inches: ±0.25%; 3 to 24 inches: ±0.15% |
| Repeatability | ±0.02% |
| Process Temperature Range | Carbon Steel: -29°C to +60°C (-20°F to +140°F) |
| Stainless Steel: -40°C to +60°C (-40°F to +140°F) | |
| Working Pressure Range | PN20 to PN420 (ANSI150 to 2500) |
| Material | Carbon Steel and Stainless Steel |
| Electronic Components | 2 detection coils and dual-channel preamplifier (standard); additional preamplifier models available |
3、Product Features of Liquid Turbine Flowmeter
- High Accuracy: Generally up to ±1%R, ±0.5%R; high accuracy type can reach ±0.2%R.
- Good Repeatability: Short-term repeatability up to 0.05%~0.2%. With frequent calibration or online calibration, high accuracy can be achieved.
- Preferred for Trade Settlement: Reliable for accurate flow measurement in commercial transactions.
- Pulse Frequency Signal Output: Suitable for total volume measurement and computer connection, with no zero drift and strong anti-interference capability.
- High-Frequency Signal: Can reach up to 3~4kHz with high signal resolution.
- Wide Range Ratio: Large and medium calibers up to 1:20, small calibers 1:10.
- Compact and Lightweight Structure: Easy to install and maintain, with large flow capacity.
- Suitable for High-Pressure Measurements: No need to drill holes in the instrument body, making it easy to manufacture high-pressure types.
- Various Special Sensors Available: Sensors can be customized for specific needs, such as low-temperature, bidirectional, downhole, or sand-mixing types.
- Insertion Type Available: Suitable for large-diameter measurements, with low-pressure loss and low cost, allowing removal without stopping flow, and easy installation and maintenance.
4、Product Characteristics of Liquid Turbine Flowmeter
- Higher Flow Rates: Achieve higher flow rates and larger flow ranges with high-quality stainless steel internal components.
- Improved Measurement Accuracy: Improve financial measurement accuracy with pulse output linear flow and a 10:1 adjustable range (turn-down ratio).
- High-Frequency Pulse Resolution: Maximize accountability with high-frequency pulse resolution, enabling measurement of small increments.
- Enhanced Electronic Performance: Enhance performance through a combination of a dual-channel preamplifier and two sensing coils.
- Total Pulse Integrity: Achieve complete pulse integrity with a standard second sensing coil, eliminating lost or duplicated pulse counts.
- Simplified Data Access: Use the Daniel DRT-899 Rate/Totalizer with a backlight display for simplified local access to key flow data.
- Easier Maintenance: Simplify maintenance with a new threaded cover, allowing easy access to preamplifier and sensing coils.
- Upgrade Possibility: Easily upgrade instruments equipped with UMB to the new LME housing, featuring enclosed electronics for improved durability.
5、Technical Specifications of Liquid Turbine Flowmeter
| Parameter | Details |
| Standard Compliance | Turbine Flow Sensor (JB/T9246-1999) |
| Instrument Diameter (mm) | 4, 6, 10, 15, 20, 25, 32, 40, 50, 65, 80 (threaded connection) |
| Accuracy Level | ±1%R, ±0.5%R, ±0.2%R (customizable) |
| Range Ratio | 1:10; 1:15; 1:20 |
| Sensor Material | 304 stainless steel, 316(L) stainless steel, etc. |
| Working Conditions | Medium Temperature: -20℃ to +120℃ |
| Ambient Temperature: -20℃ to +60℃ | |
| Relative Humidity: 5% to 90% | |
| Atmospheric Pressure: 86Kpa to 106Kpa | |
| Signal Output Function | Pulse signal, 4~20mA signal |
| Communication Output Function | RS485 communication, HART protocol, etc. |
| Power Supply | External Power Supply: +24VDC±15%, ripple ≤±5% |
| Internal Power Supply: 1 set of 3.0V 10AH lithium battery (working voltage: 2.0V~3.0V) | |
| Signal Line Interface | Basic Type: Housman connector or built-in three-core cable |
| Explosion-proof Type: Internal thread M20*1.5 | |
| Explosion-proof Grade | ExiaIICT4 or ExdIIBT6 |
| Protection Grade | IP65 or higher (customizable) |
6、Application Introduction of Liquid Turbine Flowmeter
The KNKE (USA) liquid turbine flowmeter is widely used in industries such as petroleum, chemical, electric power, pharmaceuticals, food, and environmental protection for measuring and controlling the flow of various liquids. For example, in the petroleum industry, it is used to measure crude oil and refined oil flow. In the chemical industry, it is used for the accurate measurement of various chemical liquids. In the food industry, it is used for controlling the flow of beverages, milk, and other liquids. Additionally, the flowmeter is suitable for water supply systems, boiler feedwater systems, and other industrial liquid flow monitoring. With its high accuracy, stability, and good repeatability, it is an ideal choice for flow measurement and process control in various industries.