Ultrasonic flow meters are able to measure mass flow rate of gas or liquid with high accuracy. This article discusses the advantages of using ultrasonic flow meters for mass flow measurement.
Advantages of using an ultrasonic flow meter for mass flow measurement
High Accuracy: Ultrasonic flow meters have high accuracy, which is up to ±1% full scale of the transducer output signal. The measurement error can be reduced further by using a high-precision measuring instrument such as a digital multimeter (DM). This is because DM has a resolution of 0.01% full scale and very stable output voltage that can be used as an input signal for the ultrasonic flow meter.
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Long Service Life: Ultrasonic transducers are made from solid materials, such as stainless steel, nickel alloys and titanium alloys, which can withstand harsh environments and resist corrosion well. Their service life is usually longer than other types of transducers, such as turbine or impeller, which are made from soft materials such as brass and plastic.
Low Maintenance Cost: Ultrasonic transducers have low maintenance cost because they have fewer parts and no moving parts in them so that they do not need regular lubrication like mechanical or turbine type transducers do.
Low Cost: The components of an ultrasonic flowmeter are relatively inexpensive compared to other types of mass flowmeters such as turbine or hot-wire anemometers. The only significant cost is the transducer, which converts ultrasonic waves into electrical signals that can be processed by the controller.
Simple Design: An ultrasonic flowmeter consists of two components — a transmitter that sends ultrasonic waves into the flowing medium and a receiver that detects any changes in these waves after they pass through the medium. The controller takes this information and calculates the volumetric flow rate based on these changes in the ultrasonic wave amplitude. This makes it easier to install and maintain than other types of mass flowmeters such as turbine or hot-wire anemometers where more complex equipment is required for installation.
Non-Contact Measurement: Ultrasonic flow meters do not come into contact with the medium being measured, so they are not affected by corrosion or contamination that can affect other types of meters. Ultrasonic sensors also do not wear out like mechanical sensors, so they can provide accurate readings for many years without requiring maintenance or repair work.
Simple Installation and Operation: Unlike other types of flow meters that require complex piping connections and external power sources, ultrasonic flow meters are easy to install and operate because only a single cable is required for connection to the controller unit. This makes them ideal for applications where space is at a premium or where access for maintenance workers is difficult due to space constraints or hazardous working conditions (such as in chemical plants).
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Here are more advantages of using an ultrasonic flow meter for mass flow measurement.