**Features of Various Flowmeters**
Elliptical Flowmeter Characteristics:
1. The rotation of the elliptical gear is driven by the indentor of the medium being measured.
2. The higher the viscosity of the medium, the less leakage occurs between the gear and the metering gap. Thus, the greater the viscosity of the medium, the smaller the leakage error, leading to improved measurement accuracy.
3. This type of flowmeter is ideal for measuring high-viscosity media but is unsuitable for fluids containing solid particles (as solid particles may jam the gears, making measurement impossible). If the liquid contains gas, it could also result in measurement inaccuracies.
Waist Wheel Flowmeter Characteristics:
1. Lightweight, high precision, and easy to install and operate.
2. Minimal pressure loss and a wide range of applications.
3. Commonly used in the petrochemical, electric power, metallurgy, transportation, national defense, and trade sectors for measuring gasoline, kerosene, and light diesel oil.
Dual Rotor Flowmeter Features:
1. Suitable for thin oil, light oil, heavy oil, crude oil with significant sand and water content, and high-viscosity liquids.
2. Capable of handling large volumes of liquid flow.
3. Long service life, high accuracy, and reliability.
4. Minimal internal pressure loss.
5. Direct networking with computers possible.
Orifice Flowmeter Features:
1. Easy-to-replicate throttling device structure, simple, robust, and durable.
2. Broad application range; suitable for single-phase flow and some mixed-phase flows.
3. Standard throttling devices can be used without real-flow calibration.
4. Integrated orifice plates simplify installation and do not require pressure pipes, allowing direct connection to differential pressure transmitters and pressure transmitters.
Rotor Flowmeter Features:
1. Widely used in industrial and laboratory settings.
2. Simple and intuitive design, low pressure loss, and easy maintenance.
3. Must be installed on a vertically running pipe section with the fluid flowing upward through the rotameter.
Turbine Flowmeter Features:
1. Excellent ability to handle impurities.
2. Strong resistance to electromagnetic interference and vibration.
3. Simple structure and easy maintenance.
4. Virtually no pressure loss, saving energy and reducing operational costs.
Electromagnetic Flowmeter Features:
1. Two-way measurement system.
2. Requires a straight pipe length equal to five times the diameter of the pipe.
3. Low pressure loss.
4. Unaffected by changes in fluid density, viscosity, temperature, pressure, or conductivity.
5. Primarily used in sewage treatment.
Vortex Flowmeter Features:
1. Simple construction, sturdy, with no moving parts, ensuring high reliability and long-term stable operation.
2. Easy installation and maintenance.
3. The detection sensor does not come into direct contact with the medium, ensuring stable performance and a long service life.
4. Outputs a pulse signal proportional to the flow rate with no zero drift and high precision.
5. Wide measurement range with a ratio of 1:10.
6. Minimal pressure loss, low operating costs, and energy-efficient.
Mass Flow Meter Features:
1. No mechanical transmission components, compact size, lightweight, and easy to maintain.
2. High precision.
3. No moving parts inside, ensuring excellent stability.
4. Wide range ratio, significantly better than traditional instruments.
Target Flowmeter Features:
1. Solid construction with no moving parts, featuring a plug-in structure for easy disassembly.
2. On-site dry calibration using the weight-hanging method.
3. Integrated temperature and pressure compensation, enabling direct output of mass or standard volume.
4. The flow block (target plate) can be replaced as needed to adjust the range.
5. Strong resistance to vibration and capable of measuring pulsating flow within a specific range.
Source: 10 Major Flowmeter Dynamic Schematics and Features
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