By: Steve Bush November 19, 2020
Sensirion has launched an evaluation kit for its disposable LD20-2600B liquid flow sensor, which is based on the Swiss company's CMOSens brand technology.
"Barbed fittings ensure safe and reliable integration into fluid lines," Sensirion said. "The straight and barrier-free flow channel design has no moving parts. Medical-grade wetted materials provide chemical resistance and media compatibility."
It says that the flow measurement is a two-way measurement, up to 1,000 ml/hour, and the low end of the measurement range is "single digit ml/hour." The flow rate error rate is 5% of the measured value or 2.5ml/h, whichever is greater.
Communication is via I2C, and a lot of intelligence is built-in-see data sheet.
The sensor has been on the market for many years, but the evaluation kit named SEK-LD20 is brand new-consisting of three sensors (grey in the photo), three base stations (green in the photo) and a quick start guide.
The sensor snaps into a reusable base station, which can maintain stability and provide an electrical interface from the contact pad to the 4-pin male M8 connector-compatible with the company's SCC1-USB sensor cable. The PCB in the base station adds ESD protection.
The company stated that in response to the customer's request to purchase sensors in small quantities, evaluation kits can be purchased online through Sensirion's distribution network (see below) for preliminary evaluation and proof-of-concept prototype design.
The company believes that the sensor can be used to "detect common failure modes, such as occlusion, air in the pipeline or free flow", for applications such as "dynamic infusion pump monitoring, neonatal and pediatric drug flow measurement, or urine flow measurement" . By tracking and monitoring the process, “medicine treatment becomes more effective, and medical device manufacturers can improve the safety, performance, and reliability of their products for the benefit of patients and caregivers.”
Nevertheless, the date table warns: "Do not use this product as a safety or emergency stop device, or in any other application where a product failure may cause personal injury."
Scroll down this page to find the evaluation kit, there is a reseller finder
The sensor data sheet is here
Photo-To understand the size, the tip to tip of the sensor is 48 mm long. The end barb is designed for pipes with an inner diameter of 3.2 mm.
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