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    • Home
    • Environmental Sensors
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      • Formaldehyde Sensor SFA30

        Formaldehyde Sensing Made Easy

        The SFA30 is Sensirion’s new digital formaldehyde sensor designed for easy integration into air purifiers, demand-controlled ventilation systems, or indoor air quality monitors. Based on Sensirion’s electrochemical technology, the SFA30 offers excellent formaldehyde sensing performance with a uniquely low cross-sensitivity to other VOCs. The sensor module’s on-board SHT sensor provides accurate humidity and temperature readings and enables a fully temperature/humidity compensated and factory calibrated formaldehyde concentration output in ppb.

        More

    • Flow Sensors
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      • Evaluation Kit SEK-Flow Sensing
      • Product Highlight

        Evaluation kit for the single-use liquid flow sensor LD20-2600B

        The LD20-2600B single-use liquid flow sensor for fast, precise and reliable measurements of the lowest flow rates in biomedical applications was successfully launched three years ago. The evaluation kit for this OEM liquid flow sensor can now also be purchased online via Sensirion's distribution network.

        Read more

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        Experts for Smart Sensor Solutions

        Sensirion's sensors are used in a wide range of markets and different applications. Our high-quality environmental and flow sensors and sensor solutions improve energy efficiency and sustainability. They increase our safety, support our health and raise the quality of life. 

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        Sensirion Worldwide

        Founded in 1998 Sensirion has become the leading manufacturer of flow and environmental sensors solutions. The company now employs people in various countries such as the USA, South Korea, Japan, China, Taiwan, and Germany. The headquarters in Switzerland is responsible for research, development, and production. 

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    • Liquid Flow Meters

      Our liquid flow meters measure lowest flow rates fast, precise and reliable.

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    • Flow Sensors
    • Liquid Flow Meters

    Liquid Flow Meters

    Sensirion’s liquid flow meters establish new standards wherever monitoring of low liquid flow rates, liquid handling, and liquid dispensing are important. Our unique CMOSens® Technology allows bidirectional measurement of the liquid flow through the wall of the sensor’s flow channel in milliliters, microliters, and down to single-digit nanoliters per minute. Applications in fields such as medical devices, diagnostics, process control, and automation technology benefit daily from our safe and reliable sensor solutions.

    SLx Series:

    Sensirion Liquid Flow Meters SLS 1500

    LPG10 Series:

    Sensirion Liquid Flow Meters LPGx

    Lx Series:

    Sensirion Liquid Flow Meters Lx-Series

    LD20 Series:

    Sensirion Liquid Flow Meters LD20

    SLF3x:

    • The SLx liquid flow meters with their robust IPxx protected housing are the first choice for demanding industrial environments and tabletop test set-ups or standalone applications. The liquid flow meters all provide the same electrical connector and have been designed for operation with the SCC1-USB, SCC1-RS485, and SCC1-Analog sensor cables.
    • The Lx liquid flow meters are ideal for integration into an instrument, a device, or an OEM system, e.g. diagnostics or life sciences applications.
    • The sensors of the LPG10 series are made from a miniature planar glass chip suitable for low flow rate applications where space limitations are a concern. With their down-mount fluidic ports, they allow compact integration into microfluidic manifolds.
    • The LD20 series has been designed as a single-use component for biomedical applications.
    • The SLF3x with a radically optimized mechanical design, takes the well-established functionality to the next level in price-performance ratio. The sensor maximizes safety, stability and long-term reliability for a vaste range of applications, including the fields of diagnostics, analytical instruments and life sciences.

    Selection Guide

    The choice of the right liquid flow meter is not simply a matter of selecting the right flow rate. Several other criteria must be checked and technical requirements kept in mind in order to find the most suitable sensor for your application. The selection guide is intended to help you decide which liquid flow meter is the best fit for your application.

    Our liquid flow meters are 100% in-factory calibrated, typically for H2O or IPA or both. These calibrations provide a good base for measurement of aqueous solutions (H2O) or hydrocarbons, oils, fuel, and organic solvents (IPA).

    Reset all filters

    Liquid Flow Sensor SLF3x

    • Max. flow rate (calibration medium): 40 ml/min for SLF3S-1300F and 2000 µl/min for SLF3S-0600F (both variants with H2O and IPA)
    • Interface options (connector): I2C (6-pin Molex)
    • Compact and light-weight form factor
    • Buy now from our distributors
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    Liquid Flow Meter LG16

    Sensirion Liquid Flow Meters LG16
    • Max. flow rate (calibration medium): 50 ml/min (H2O); 80 ml/min (IPA, available on most variants)
    • Interface options (connector): I2C (5-pin Molex)
    • 6 sensor versions cover different flow ranges and calibrations for different media
    • Buy now from our distributors
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    Liquid Flow Meter LG01

    Sensirion Liquid Flow Meters LG01
    • Switch points (calibration medium): 0.25 ml/min or 4.5 ml/min (H2O)
    • Interface options (connector): 5V/0V high/low output (5 pin-Molex)
    • Flow switch for flow detection (flow/no flow) and bubble detection
    • Buy now from our distributors
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    Liquid Flow Meter LS32-1500

    Sensirion Liquid Flow Meters LS32 1500
    • Max. flow rate (calibration medium): 40 ml/min (H2O)
    • Interface options (connector): I2C (4-pin Molex)
    • Response time: 20 ms
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    Liquid Flow Meter SLI

    Sensirion Liquid Flow Meters SLI
    • Max. flow rate (calibration medium): 5 ml/min (H2O); 80 ml/min (IPA)
    • Interface options (connector): RS485, I2C, USB or analog (4-pin M8)
    • IP 65 water and dust protection
    • Buy now from our distributors
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    Liquid Flow Meter SLG1430

    Sensirion Liquid Flow Meters SLG1430
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    Liquid Flow Meter SLG

    Sensirion Liquid Flow Meters SLG
    • Max. flow rate (calibration medium): 8 µl/min (H2O)
    • Interface options (connector): RS485, I2C, USB or analog (4-pin M8)
    • Max. operating pressure: up to 1200 bar (17500 psi)
    • Buy now from our distributors
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    Liquid Flow Meter SLQ-QT105

    Sensirion Liquid Flow Meters SLQ-QT105
    • Max. flow rate (calibration medium): 120 ml/min (IPA)
    • Interface options (connector): RS485, I2C, USB or analog (4-pin M8)
    • For hydrocarbon based liquids only
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    Liquid Flow Meter SLQ-QT500

    Sensirion Liquid Flow Meters SLQ QT500
    • Max. flow rate (calibration medium): 120 ml/min (H2O and IPA)
    • Interface options (connector): RS485, I2C, USB or analog (4-pin M8)
    • PFA tubes for fluidic connection
    • Buy now from our distributors
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    Liquid Flow Meter SLS-1500

    Sensirion Liquid Flow Meters SLS 1500
    • Max. flow rate (calibration medium): 40 ml/min (H2O)
    • Interface options (connector): RS485, I2C, USB or analog (4-pin M8)
    • Response time: 20 ms
    • Buy now from our distributors
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    Liquid Flow Sensor LPG10

    Sensirion Liquid Flow Meters LPGx
    • Max. flow rate (calibration medium): 1 ml/min (H2O)
    • Interface options (connector): I2C (contact pads)
    • Planar microfluidic glass chip of only 10 x 10 mm2
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    Liquid Flow Sensor LD20

    • Max. flow rate (calibration medium) for LD20-2600B: 1000 ml/h (H2O)
    • Interface option (connector): I2C (contact pads)
    • Single-use design for biomedical applications
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    Liquid Flow Meter Kits

    Sensirion Liquid Flow Meters Flow Meter Kit SLI
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    Liquid Flow Sensor LPP10

    Sensirion Liquid Flow Meters LPPx
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    Liquid Flow Meter ASL1600 (End of Life)

    Sensirion Liquid Flow Meters ASL1600
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    Liquid Flow Meter LG216

    Sensirion Liquid Flow Meters LG16 LG216
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    Liquid Flow Meter SLQ-HC60

    Sensirion Liquid Flow Meters SLI SLQ-HC60 V2
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    Customized (OEM) Liquid Flow Meters

    Sensirion Customized Solutions
    • Adjustment of flow rates or dynamic ranges
    • Modification of packaging, wetted materials, fluidic or electrical interfaces
    • Improvement of dead volume or pressure resistance
    • Product Page
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    • Sensirion Liquid Flow Meters Selection Guide

    Latest News

    02/15/2021
    | Liquid Flow

    Signaling flags

    Besides measuring the flow rate, the liquid flow sensors of the LD20 and the SLF3x series are also able to detect air inside the flow channel and to ...

    Read more

    Liquid Flow Liquid Flow

    01/25/2021
    | Liquid Flow

    Performance and repeatability

    Due to the high sensitivity of Sensirion’s liquid flow sensors, clean handling is important to maintain high performance. But what if you are unsure ...

    Read more

    Liquid Flow Liquid Flow

    12/28/2020
    | LDA Market | Liquid Flow

    Quick start guide video and operating guide

    Get your liquid flow measurement started! Flow rate values are just a few minutes away, if you follow these simple steps to set up your liquid flow ...

    Read more

    LDA Market Liquid Flow LDA Market

    11/19/2020
    | Liquid Flow

    Engineering guidelines for LD20 base station

    Interested in evaluating Sensirion’s single-use liquid flow sensor, the LD20, but don’t know how to connect it electronically? Sensirion has designed ...

    Read more

    Liquid Flow Liquid Flow

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    Download Center

    Here you can find all documents of Sensirion's liquid flow meters for download.


    Quick and Easy Testing with Sensirion’s Liquid Flow Meter Kits

    For initial measurements and plug-and-play testing, all our SLI, SLS, SLG, and SLQ liquid flow meters can be ordered as part of a Liquid Flow Meter Kit. In addition to the liquid flow meter of your choice, the kit contains:

    • SCC1-USB and SCC1-Analog sensor cables for electrical connection
    • Basic set of fluidic connectors for the selected sensor type
    • Windows PC viewer and logging software


    For the liquid flow sensors of the SLF3x, LPG10, and LD20 series we offer specific Evaluation Kits that include all electrical and fluidic connectors for quick integration into the prototype build of your OEM system.

    For further detailed information, please click here.

    Interested in purchasing one of Sensirion’s Liquid Flow Meter Kits? CONTACT US.

    • Evaluation Kit SLF3x

    • Sensirion Liquid Flow Meters Flow Meter Kit SLI

      Exemplary SLx Liquid Flow Meter

    • Sensirion Liquid Flow Meters Flow Meter Kit LPG open

      LPG10 planar glass sensor in acrylic block

    • Sensirion Liquid Flow Meters Flow Meter Kit LPG closed

      Pre-assembled LPG10 Evaluation Kit

    • LD20 liquid flow sensor with base station


    Customized OEM Solutions

    In collaboration with you, Sensirion develops and manufactures tailored liquid flow sensor solutions for your application – whether for a medical device or analytical instrument, or for the life sciences, biotech, and semiconductor industries. Read more...

    Please contact our experts to discuss possible options for customized solutions.


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