SLx – Standalone Liquid Flow Meters

The SLI, SLS, SLQ, and SLG liquid flow meters all feature a robust IPxx protected housing and the same 4-pin M8 connector. In combination with the SCC1-USB, RS485, or analog sensor cables, they provide a modular solution that covers a wide range of flow rates from single-digit nanoliters per minute up to several hundred milliliters per minute, and a suitable electrical interface for almost any environment:

SCC1-USB sensor cable for laboratory and desktop use provides a plug-and-play connection to a PC for operation with Sensirion’s viewer software or user-built programs.
SCC1-RS485 sensor cable for demanding industrial automation environments features a stable RS485 interface and includes advanced functionalities such as dispense volume totalizer, automatic dispense detection and data buffer for asynchronous read-out.
SCC1-Analog sensor cable for simple and quick readings without programming or for integration into generic controller systems. In addition to a 0-10 V analog voltage output, the cable provides a configurable digital (high/low) output that can be programmed to act as a flow switch or as a pulse output.

The SLx liquid flow meters are the first choice for standalone applications in industrial automation systems, laboratory set-ups, bench-top testing, and technology evaluation. The robust housing (IP53 or higher) protects them from dust or accidental spills.

Overview of SLx Liquid Flow Meters:

Liquid Flow Meter	Applications	Max. flow rate (calibration medium)	Interface options (connector)	Wetted materials	Specific characteristics	Links
SLG	Liquid chromatography High-pressure/ultra- low flow Analytical instruments Leakage testing Microfluidics	8 µl/min (H₂O)	RS485, I²C, USB or analog (4-pin M8 male)	Stainless steel, PEEK and fused Silica	3 sensor versions cover different flow ranges Max. operating pressure up to 1200 bar (17500 psi)	Datasheet Website Contact
SLI	General process monitoring Pump control Monitoring of fuel flow Lubricants dosage monitoring Conformal coating Leakage detection	5 ml/min (H₂O) 80 ml/min (IPA)	RS485, I²C, USB or analog (4-pin M8 male)	Quartz glass, PEEK; Borosilicate Glass 3.3, PEEK, FEP	3 sensor versions cover different flow ranges IP65 water and dust protection	Datasheet Website Contact
SLS-1500	Diagnostics Analytical instruments Biomedical devices Industrial automation Fuel cells	40 ml/min (H₂O)	RS485, I²C, USB or analog (4-pin M8 male)	PTFE, PEEK, and 904L high-performance stainless steel	Response time: 20 ms	Datasheet Website Contact
SLQ-QT105	High-end semiconductor process control Photoresist dispensing Fast dosing operations	120 ml/min (IPA)	RS485, I²C, USB or analog (4-pin M8 male)	PCTFE, PFA, and quartz glass	For hydrocarbon based liquids only High purity quartz and fluoropolymer wetted materials	Datasheet Website Contact
SLQ-QT500	Process control Industrial automation High-viscosity applications Paint and glue dispensing Photoresist dispensing	120 ml/min (H₂0 and IPA)	RS485, I²C, USB or analog (4-pin M8 male)	PFA, and quartz glass capillary	PFA tubes for fluidic connection (6.35 mm / 1/4'' OD, 4.35mm ID) High-purity quartz and fluoropolymer wetted materials	Datasheet Website Contact

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Lx - Compact Liquid Flow Meters

If you can't find what you are looking for, please have a look at our Lx liquid flow meters. They are ideal for industrial and diagnostic OEM applications, i.e. for integration of the liquid flow meter into a device or instrument in larger quantities.