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Comparison of integrated orifice flowmeter and ultrasonic flowmeter

The integrated orifice flowmeter is a high-range ratio differential pressure flow device composed of a standard orifice plate and a multi-parameter differential pressure transmitter. It can measure gas, steam, liquid and flow, and is widely used in petroleum, chemical, metallurgy, Process control and measurement in the areas of electricity, heating, water supply, etc.
An ultrasonic flow meter is a meter that measures the flow by detecting the effect of fluid flow on the ultrasound beam (or ultrasound pulse).
Accuracy change of the orifice ultrasonic flowmeter during use: Due to long-term use of the orifice flowmeter, the inlet edge of the orifice plate is worn and the orifice plate is bent and deformed, which will cause the precision to be lost. Ultrasonic flowmeters can maintain high accuracy for a long time due to no wear and no drift of indication.
The throttle should be inspected frequently and must be replaced once the throttle changes. The life of the throttle depends on the composition, flow and pressure of the gas. The ultrasonic flowmeter itself has a strong self-diagnosis function. Once it is not in normal condition, it will alarm and automatically record the data during the alarm. The ultrasonic probe has a service life of at least 8 years and can be replaced online.
Spare parts for orifice plate and ultrasonic flowmeter during use: Orifice flowmeters Because the throttles are often worn and deformed, multiple sets of throttles are required. Ultrasonic flowmeters only need a set of probes, which can be used interchangeably.
Routine maintenance of the orifice plate and ultrasonic flowmeter during use: The orifice flowmeter requires frequent maintenance and checks the parameters such as the geometry of the throttle. It is difficult to ensure that no leakage occurs after the orifice plate is replaced online, so that the pressure difference is not accurate, and it is difficult to ensure the measurement accuracy. The ultrasonic flowmeter is maintenance-free and has a powerful self-test.
Dirty effects of orifice plate and ultrasonic flowmeter during use: Since the orifice flowmeter is used by the throttle, when it is used for a long time, the dirt will accumulate in the upstream of the orifice plate, causing the differential pressure signal to be inaccurate, directly affecting the measurement accuracy. . Dirty and orifice passivation can cause a measurement deviation of 2 to 10% or more. The ultrasonic flowmeter is a hollow pipe section, and the probe is on the upper part of the instrument. The dirt is not easy to affect the working of the probe, and the measurement accuracy is not affected. Moreover, the flowmeter can detect the dirty condition and correct and alarm prompts, and timely clean.
Troubleshoot the orifice plate and ultrasonic flowmeter during use: Since the instrument characteristics of the orifice flowmeter depend on the geometry and size of the throttle. The strong inspection period of the orifice ultrasonic flowmeter during use: the orifice flowmeter is inspected once a year, and the geometric verification method is generally adopted. The ultrasonic flowmeter can be on-line calibration after 3 years of inspection.

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