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1. What are the technologies for measuring condensate flow in industry?
The main technologies for measuring condensate flow in industry include differential pressure flow meters, electromagnetic flow meters, ultrasonic flow meters, and vortex flow meters. The specific selection depends on the working conditions. 1. Differential pressure flowmeter • Principle: The differential pressure liquid is generated through throttling devices (such as orifice plates and nozzles) and converted into flow rate • Applicable scenarios: high temperature and high pressure steam condensate water (≤ 6.4MPa/400 ℃) • Accuracy: ± 1.5%~2.5% • Note: A condensing tank protection transmitter is required. 2 Electromagnetic flowmeter • Principle: Measuring conductive liquids based on Faradays law of electromagnetic induction • Applicable scenarios: Clean condensed water with conductivity ≥ 5 μ S/cm • Accuracy: ± 0.5% • Advantages: No pressure loss, corrosion-resistant 3 Ultrasonic flowmeter • Type: Time difference type (accuracy ± 1%)/Doppler type (applicable to bubbles) • Installation method: external clamp type (no need to cut the pipe)/insertion type • Temperature limit: usually ≤ 150 ℃ 4 Vortex flowmeter • Principle: Detecting vortex separation frequency • Features: Poor vibration resistance, requiring 10D straight pipe section • Range ratio: 10:1 Selection key parameters comparison: | Type | Accuracy | Temperature upper limit | Pressure loss | Minimum conductivity requirement | | ---------------------------------------------------------------------------------------------------------- | | Differential pressure | ± 2% | 400 ℃ | Large | None | Electromagnetic | ± 0.5% | 180 ℃ | None | 5 μ S/cm | Ultrasonic time difference | ± 1% | 150 ℃
2. What are the flow adjustment methods for metering pumps?
3. Are nozzle type flowmeters the same as cone type differential pressure flowmeters?
They are different.. A nozzle flowmeter is a differential pressure generating device for measuring flow rate, which can be used in conjunction with various differential pressure gauges or transmitters to measure the flow rate of various fluids in pipelines. The standard spray nozzle throttling device is used in conjunction with a differential pressure transmitter to measure the flow rates of liquids, vapors, and gases. It is widely used in various combustion industries such as petroleum, chemical, metallurgical, power, and light industry. Cone flowmeter is a new type of differential pressure flow measurement device, which uses a unique edge wall gradually contracting throttling method to change almost all the disadvantages of conventional throttling devices. Clear width is a revolutionary achievement of differential pressure flowmeter. Its principle is the same as other differential pressure flow meters, which is the classic principle of energy conservation and flow continuity in closed pipelines, and has self rectification, self-cleaning, and self-protection functions.
4. What is a nozzle flowmeter?
A nozzle flowmeter is a differential pressure generating device for measuring flow in a closed loop. It can be used in conjunction with various differential pressure gauges or transmitters to measure the flow of various fluids in pipelines.
. The standard nozzle throttling device is used in conjunction with differential pressure transmitters to measure the
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