Flow Meter Sensor

The Flow Meter Sensor is a specialized component designed for integration into flow control valves or meters. Its primary function is to detect and quantify the volumetric or mass flow rate of fluids—both liquids and gases—passing through a system. By converting physical flow characteristics into measurable electrical signals, the sensor enables monitoring, control, and data acquisition in industrial processes. This sensor operates on various principles, including electromagnetic, ultrasonic, turbine, or differential pressure methods, depending on the application requirements. It detects changes in fluid properties such as velocity, pressure differential, or thermal characteristics, and generates an analog or digital electrical signal proportional to the flow rate. This signal is then transmitted to a controller or display unit for further processing. Typical technical parameters include a measuring range of 0.1–10 m³/h for liquids with viscosity up to 100 cP, an accuracy of ±0.5% of rate (per ISO 11631), and repeatability of ±0.1% under constant operating conditions. The sensor operates within a pressure range of 1.0–1.6 MPa and a temperature range of -40 to 85°C, with optional heat sinks for high-temperature media. It requires a 24 V DC supply voltage (±10%) and provides a 4–20 mA output signal (IEC 60381-1), with HART protocol available. Ingress protection ranges from IP65 to IP67 (IEC 60529), and process connections are available in flange or threaded options from DN15 to DN100 (ISO 7005). Wetted materials are typically 316L stainless steel (ASTM A240), with Hastelloy C optional for corrosive media. The sensor weighs between 2.5 and 8.0 kg, depending on connection size. Materials on file include stainless steel, polymers, and ceramics. All listed values and standards are reference ranges and must be verified with the legal manufacturer or supplier for the specific model and application.

The Flow Meter Sensor operates by detecting changes in fluid properties such as velocity, pressure differential, or thermal characteristics, using technologies like electromagnetic, ultrasonic, turbine, or differential pressure. It generates an electrical signal (analog or digital) proportional to the flow rate, which is transmitted to a controller or display unit. The sensor's design ensures accurate measurement across a specified range, with performance influenced by fluid viscosity, pressure, and temperature. For reliable operation, the sensor must be installed within its rated pressure and temperature limits, and the output signal can be interfaced with standard control systems.