Flow Meter | SMC PFM7 Replacement | For Compressed Air & Oxygen

This digital aerothermal mass flow meter accurately measures the flow rate of compressed air and other common gases. It uses a thermal mass flow sensor. This sensor provides readings that aren't affected by changes in gas pressure or temperature. It gives a direct measurement of mass flow. Features and Benefits - Thermal Mass Measurement - Works by measuring heat dissipation. This directly calculates mass flow for better accuracy. - Multi-Gas Compatibility - Calibrated to measure various gases. These include compressed air, nitrogen, oxygen, and CO2. - Clear Digital Display - A built-in screen shows the current and total flow rate for easy viewing right at the device. - Compact Inline Design - Its small size lets you install it easily into existing pipework. It's a direct replacement for many common models. Applications - Compressed Air Audits - Track air use in pneumatic systems. This helps find leaks and improve compressor usage. - Gas Blending and Dosing - Precisely control the flow of oxygen or nitrogen in manufacturing and lab processes. - System Monitoring - Use as a permanent gas mass flow meter to watch how well equipment and production lines are working. Key Functions A flow meter, such as the ASAIR AFM07 Aerothermal Mass Flowm, measures the rate of flow for various gases. This particular model is designed for use with compressed air and oxygen. Flow meters are crucial for monitoring and controlling gas consumption in industrial settings, ensuring efficient operation and preventing waste. Understanding flow rates helps in optimising processes and maintaining safety standards where precise gas delivery is essential. The ASAIR AFM07, being a replacement for the SMC PFM7, offers a reliable solution for existing systems. Common Types of Flow Meters There are several types of flow meters, each suited to different applications and media. These devices vary in their operating principles, from measuring mass flow to volume flow. The ASAIR AFM07 is a mass flow meter, specifically an Aerothermal Mass Flowm, suitable for compressed air and oxygen. Other common types include velocity-based meters and differential pressure meters. The selection of a flow meter depends on factors like the type of fluid, required accuracy, and operating conditions. Key Types & How They Work Flow meters can be broadly categorised by their operating theory. The ASAIR AFM07 operates on mass flow theory, specifically as an Aerothermal Mass Flowm, designed for gases like compressed air and oxygen. Mass flow meters directly measure the mass of a fluid flowing through a pipe, which is particularly useful when fluid density can vary. Other types include positive displacement meters, which trap and count discrete volumes of fluid, and ultrasonic meters, which use sound waves to determine flow velocity. Velocity-Based Meters Velocity-based meters determine flow by measuring the speed at which a fluid moves through a pipe. These meters infer the flow rate by multiplying the fluid's velocity by the cross-sectional area of the pipe. Examples include turbine meters, where the fluid rotates a turbine, and electromagnetic meters, which measure the voltage induced when a conductive fluid passes through a magnetic field. While the ASAIR AFM07 is a mass flow meter, velocity is an indirect factor in many flow measurement principles. Differential Pressure (DP) Meters Differential pressure meters measure flow by creating a pressure drop across an obstruction in the flow path. The flow rate is then calculated from the measured pressure difference. Common types of DP meters include orifice plates, venturi tubes, and flow nozzles. These devices are widely used due to their simplicity and robustness. However, the ASAIR AFM07 is a mass flow meter, employing a different principle to measure the flow of compatible gases such as compressed air and oxygen.