The Swiss sensor manufacturer Sensirion AG is launching the
LG01 micro flow switch for ultra-low liquid flow rates and bubble detection.
The sensor makes fluidic systems more reliable by enabling the detection of
liquid flow within the range of a few ml/min and less. For such measurements
the sensor offers a short response time below 100 ms. Its output signal of
either 0 or 5 volts indicates whether the current flow rate is above or below
the specified flow switch level. At continuous flow rates above this limit the
identification of air bubbles within the flow channel is equally consistent.
Maximum flow rates are accepted up to 220 ml/min. Fluidic connections can be
made via ¼-28 standard fittings, suitable for connecting plastic tubing with
outer diameters of 1/8” (3.2 mm) or 1/6” (1.6 mm). Barb connector adapters are
available as an alternative.
The tiny, light sensor is designed for integration into
bio-medical applications and general process control solutions. An excellent
chemical resistance and bio-compatibility are ensured by its non-invasive
measurement through the wall of the straight, internal glass capillary
(diameter 1.8 mm) and fluidic connectors made of PEEK™ high-end plastics. The
new product is based on a digital MEMS chip and expands Sensirion’s existing
line of high-quality liquid flow products by employing a simple and