用渦流流量計測量RO水是否準確?

The accuracy of measuring RO (reverse osmosis) water using a vortex flowmeter depends on a number of factors, 包括流量計的設計, the installation conditions, the characteristics of the RO water, and the operating environment. The following is an analysis of the accuracy of measuring RO water with vortex flowmeters:

Characteristics of RO water

RO water is high purity water treated by reverse osmosis and has the following characteristics:

• 1. Low conductivity: RO water has very low conductivity and is almost non-conductive.
• 2. Low viscosity: the viscosity of RO water is similar to that of ordinary water, with good fluidity.
• 3. No impurities: RO water contains almost no particles or suspended matter.

These characteristics make RO water in the measurement of flowmeter requirements are relatively low, because of its stable physical properties, will not cause blockage or corrosion of the flowmeter.

Accuracy of vortex flowmeters

The accuracy of vortex flowmeters usually ranges from ±1% to ±2%, depending on:

• 1. Flow range: accuracy is higher within the rated range of the flowmeter; accuracy may decrease as the minimum or maximum flow rate is approached.
• 2. Installation conditions: the correct installation (such as before and after the length of the straight section, pipe diameter matching, ETC。) has an important impact on the accuracy.
• 3. Signal processing: High quality sensors and signal processing circuits can improve measurement accuracy.

Factors affecting accuracy

• 1. Air bubbles: If the RO water contains air bubbles, it may affect the measurement accuracy of the vortex flowmeter. Therefore, it is very important to ensure that there are no air bubbles in the RO water system.
• 2. Vibration: Vortex flowmeter is sensitive to pipeline vibration, and vibration interference should be avoided during installation.
• 3. Temperature and pressure: Although the temperature and pressure of RO water varies little, it is still necessary to ensure that the flowmeter works within the calibrated temperature and pressure range.

Comparison with other flow meters

• 1. Electromagnetic flowmeter: due to the low conductivity of RO water, electromagnetic flowmeter is not suitable for measuring RO water.
• 2. Ultrasonic flowmeter: applicable to RO water, but the cost is high and the installation conditions are strict.
• 3. Turbine flowmeter: applicable to RO water, but susceptible to impurities, while RO water contains almost no impurities.

Vortex flowmeters can provide a high degree of accuracy when measuring RO water, typically between ±1 per cent and ±2 per cent. To ensure optimum accuracy, the following points need to be noted:

• 1. Ensure that the RO water does not contain air bubbles.
• 2. Install the flow meter correctly to avoid vibration interference.
• 3. Use the flowmeter within its rated range.

If these conditions are met, vortex flowmeters are a reliable and highly accurate choice for RO water flow measurement.