Single-Use Liquid Flow Sensor for the Measurement of the Lowest Flow Rates in Biomedical Applications

Sensirion presents its single-use liquid flow sensor LD20 aimed at the fast, precise and reliable measurement of the lowest flow rates. The flow sensor series is based on a successful design study that was first presented in 2014 and has already received several international awards. Product development of the LD20-2600B, the first representative of the new single-use sensor series, is now complete and it is ready for high-volume production. The intelligent, compact and cost-effective sensor is suitable for a wide range of biomedical applications in the field of critical and home care, such as monitoring of ambulatory infusion pumps, ultra-low flow measurements of precious medications in neonatology and paediatrics, continuous urine flow measurement, to name but a few.

The LD20-2600B liquid flow sensor is based on Sensirion’s proven CMOSens® Technology and optimises costs by simplifying the design without sacrificing easy fluidic, electrical and mechanical connections. Barbed fittings ensure safe and secure integration in the fluidic line. The straight and unobstructed flow channel design has no moving parts. Medical-grade wetted materials provide outstanding chemical resistance and excellent media compatibility. While providing bidirectional measurement of flow rates from 1000 ml/h down to single digit ml/h, the sensor also reliably detects common failure modes such as occlusion, air in line or infiltration with unprecedented speed and sensitivity.

Smaller LD20 product versions (e.g. the LD20-0600x) for even lower flow rates down to only a few hundred µl/h will be released in the future and are now available in sample quantities.

Sensirion’s liquid flow meters are already being used in numerous challenging applications, from diagnostic instruments to process control in the semiconductor industry. Combined with Sensirion’s extensive experience in the medical field, the new single-use LD20 series will enhance your applications with maximum safety, performance and reliability.