Small Liquid Flow Sensors Available

By DE Editors

Swiss sensor manufacturer Sensirion has announced the launch of its new liquid flow series LPP10 and LPG10 sensors. The new technology is based on planar microfluidic substrates and the sensors are available with a glass (LPG10) or a plastic (LPP10)  packaging. Both versions have a footprint of just 10mm by 10 mm. The glass version is extremely durable, while the plastic version is more suitable for disposable applications and is cost-effective in high volume, the company says. Both versions can be used for medical and biomedical applications.

The packaging enables the thermal flow sensor microchips to measure non-invasively through the wall of a flow channel inside a microfluidic planar substrate. This design provides unique sensitivity for liquid flow measurement and bubble detection in the range of 0 to 1000 microliters per minute, the company says.

A small digital CMOSens microchip is bonded to the microfluidic channel substrate. In addition to the sensor element, it houses the complete digital intelligence and the memory necessary for signal linearization,  temperature compensation and self-test algorithms. Electrical contact is made via metallization above the microfluidic substrate. Fluidic ports below facilitate easy integration of discrete sensors into numerous designs. A digital microsensor chip provides a fully calibrated digital output, eliminating the need for additional signal conditioning.
 
For more information, visit Sensirion.

Sources: Press materials received from the company and additional information gleaned from the company’s website.