The IFM SM4000 is a high-performance flow sensor with totalizer function, engineered to provide precise measurement and monitoring of conductive liquids in industrial applications. With its versatile output configuration, robust connection design, and wide media compatibility, it offers a comprehensive solution for process control and efficiency improvement.

One of the defining features of the SM4000 is its multi-output design. Equipped with two digital outputs and one analog output, the sensor can simultaneously deliver switching signals, alarm triggers, and continuous measurement values. The digital outputs are ideal for monitoring threshold conditions, such as high or low flow alarms, while the analog output provides proportional flow data for integration into PLCs or control systems. This flexibility reduces the need for multiple sensors and simplifies system architecture.

The sensor incorporates a totalizer function, enabling operators to track cumulative flow volumes over time. This feature is particularly valuable for applications where fluid consumption, batching, or long-term usage data is critical. By providing both real-time flow measurement and cumulative totals, the SM4000 enhances process transparency and supports preventive maintenance and resource optimisation.

Mechanically, the SM4000 uses a threaded G 1/4 external connection with DN6 flat seal, ensuring leak-free integration into fluid circuits. It is designed for installation by means of an adapter, offering flexibility and secure mounting in a wide variety of pipework configurations. This robust connection system guarantees stability and reliability in continuous operation.

The SM4000 is optimised for conductive liquids, water, and water-based media, making it suitable for cooling circuits, water treatment systems, and process water monitoring. With an operating temperature range of 0…60 °C, it performs reliably in standard industrial conditions, supporting applications across manufacturing, utilities, and general process automation.

Electrically, the SM4000 incorporates gold-plated contacts, ensuring excellent conductivity, reduced contact resistance, and long-term corrosion resistance. This improves signal reliability and extends sensor lifespan, even in humid or challenging environments. Its design is tailored for industrial automation, ensuring smooth integration with modern control systems and long-term operational stability.

The SM4000 is particularly well-suited for industries such as automotive, packaging, food and beverage, and process engineering, where accurate flow measurement and monitoring are critical to quality control, system protection, and efficiency. Its ability to provide both instantaneous flow data and cumulative totals makes it invaluable for applications like coolant flow monitoring in CNC machines, consumption tracking in utilities, or ensuring consistent water supply in automated processes.

In summary, the IFM SM4000 is a versatile and robust flow sensor that combines dual digital and analog outputs, totalizer functionality, a secure G 1/4 connection, and compatibility with conductive liquids. Built for long-term use in industrial environments, it delivers accurate monitoring, efficient process control, and valuable cumulative flow data to support optimised performance and reduced downtime.