SLQ-QT500 Liquid Flow Meter High Purity Flow Meter for High Viscosity Applications Liquid flow rates up to 120 ml/min Dual calibration for IPA and H2O Response time < 50 ms Straight flow channel, no moving parts For a wide range of viscosities Inert wetted materials (PFA, Quartz) Product Summary The SLQ-QT500 Liquid Flow Meter enables fast, non-invasive measurements of liquids for demanding high purity applications. Dual calibration (water, H O and isopropyl alcohol, IPA) allows flow monitoring for water-based or 2 hydrocarbon-based liquids. The straight wetted flow path has no moving parts and is only made of PFA and Quartz. Its excellent chemical compatibility makes the SLQ-QT500 the first choice, even for measuring aggressive chemicals. The flow meters micro-thermal technology, in combination with the straight and obstacle-free flow path, makes it the ideal solution for high-viscosity liquids. Interface Options Digital Analog 2 - I C-Bus - Voltage output (0-10 V) - RS485-Bus - Current output (4-20 mA) - USB cable - Additional operation modes For more information on communication, please refer to page 6 of this document. Benefits of Sensirions CMOSens Technology High reliability and long-term stability Industry-proven technology with a track record of more than 10 years Designed for mass production Low signal noise www.sensirion.com / D1 Version 4 July 2018 1/13 Content 1 Sensor Performance 3 2 Specifications 4 3 Sensor Output Signal Description 5 4 Communication Interface Description 6 5 Fluidic Specification and Connections 7 6 Mechanical Specifications 8 7 Cleanliness of Flow Path 9 8 Ordering Information 10 9 CE, REACH, RoHS, and WEEE 10 10 Important Notices 11 11 Headquarters and Subsidiaries 12 www.sensirion.com / D1 Version 4 July 2018 2/13