Sensirion SFM4100 Digital Mass Flow Meter for Gas, 20L/min Max, 2-Wire I2C, Polyamide/Aluminium/Silicon, SFM4100

The Sensirion SFM4100 Digital Mass Flow Meter is an innovative and precise instrument engineered for demanding gas flow measurement applications. Built for versatility and accuracy, this device measures the flow of air and non-aggressive gases with exceptional stability, making it suitable for industrial, laboratory, medical, and process automation environments. Using patented CMOSens sensor technology, the flow meter delivers a fully digital, temperature-compensated, and linearized flow signal, all within a highly compact and robust housing.

Designed to accommodate a wide flow range up to 20L/min, the SFM4100 combines a very low pressure drop with high measurement accuracy, making it ideally suited for applications where gas delivery must be both gentle and precisely metered. Integrated I2C digital communication ensures fast and reliable data transfer to your process control system or data logger, streamlining integration within automated systems and advanced instrumentation.

The construction features premium materials, including Polyamide 12, coated aluminium, silicon nitride, gold, epoxy, nickel-plated brass, nylon, oxygenoex, nitrile rubber (NBR), silicon suboxide, and stainless steel, each selected for chemical resistance and longevity in harsh environments. The meter is optimized for temperatures from -20°C to +80°C, supporting even critical medical and analytical gas applications.

Key technical benefits include a 2-Wire I2C connection for digital output, a pressure rating up to 10 bar, and a minimum operating voltage at 5VDC with maximum rating of 9V.

This model is ideal for use in medical equipment for respiratory care and anaesthesia, laboratory and analytical instrumentation, leak detection, and a broad array of process automation settings. The internally linearized and temperature-compensated output ensures accuracy and reduces calibration drift, reducing maintenance and maximizing performance. With a high current efficiency (12.5mA) and maximized system protection, the SFM4100 is a reliable choice for continuous operation in mission-critical roles.

Explore other leading flow measurement and control devices in the Sensirion SFM4100 series and related high-precision flow meters in our comprehensive EnvMart Flow Meter category.