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Bidirectional Mass air flow sensor

PN: S4000B
Mass flow sensor featuring bidirectional flow measurement.
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    Bidirectional MEMS gas flow sensors & Mass Flow Meters

    Wide flow range: 12SLPM, 20SLPM, 35SLPM, 50SLPM, 100SLPM, 150SLPM, 200SLPM, 300SLPM, 500SLPM

    I2C or Analog output (1-5V)

    Introduction

    S4000 series of MEMS air flow sensors (also called a flow meter) are specially designed for the measurement of medical gas flow and process control, which based on the MEMS flow sensor core technology , and applied to the kinds of clean and dry gas flow measurement with achievements of facility digitalization, intelligence and high safety compared to the traditional industry. S4000 series have the property of wide range of flow measurement which satisfy different flow measuring requirements with high sensitivity, high reliability and stability and low cost.
    S4000 series promotes to development for more intelligence and energy saving.

     

    Application

    Medical ventilation,

    oxygen machine,

    Gas mask and respirator,

    Sprayer,

    Continuous positive airway pressure (CPAP) device,

    Anesthesia delivery,

    Leak detection,

    Spectrometer,

    Mass flow controller,

    Environmental climate control,

    Fuel cell control

     

    Feature

    Wide flow range 12SLPM-950SLPM
    High precision (1.5% F.S accuracy)
    Linear output and temperature compensation
    Maintain long-term stability with minimal zero drift
    Solid-state sensing core (no surface void or fragile membrane), anti-blocking and pressure shock

    I2C or Analog output (1-5V)
    Fast response time (20ms response time)

     

    Maximum rating

    Working temperature: -25 ° C to 85 ° C
    Storage temperature: -40 ° C to 90 ° C

    Humidity: 0~100%RH*
    Impact resistant 100 g
    The sensor is resistant to condensation

     

    Function Paremeters

     

    Electrical characteristics

    Test conditions: VIN = 12 ± 0.01 VDC, Ta = 25 ° C. Relative humidity: 40% <relative humidity <60%

    Maximum operating temperature range -25°C to +85°C

     

               PN

     

    Flow range(1)

    Unit2)

    Maximum flow rate(m/s)

    S4003BV

    -12-12

    SLM

    0.527

    S4004BV

    -20-20

    SLM

    0.877

    S4005BV

    -35-35

    SLM

    1.535

    S4100BV

    -50-50

    SLM

    2.193

    S4101BV

    -100-100

    SLM

    4.387

    S4102BV

    -150-150

    SLM

    6.58

    S4103BV

    -200-200

    SLM

    8.773

    S4104BV

    -300-300

    SLM

    13.16

    S4105BV

    -500-500

    SLM

    35.5

     

    Specifications

    Minimum

    Default

    Maximum

    Unit

    Supply voltage

    8

    12

    24

    VDC

    Supply current

    20

               

                 23

    30

    mA

    Analog voltage

    output (3)

    1

     

    5

    VDC

    Zero voltage

    0.95

    1

    1.05

    VDC

    Zero drift

    0.2

    %F.S

    Resolution (4)

    0.1

    %F.S

    load

    100

    KΩ

    Accuracy

    1.5

    2

    %F.S

    Response time

    20

    30

    mSec

    Overall material

    Silicon carbide, epoxy resin, polyphenylene sulfide, FR4, silicon as a seal

     

    1. Customizable range between 10SLM and 300SLM
    2. SLM: Standard liters per minute. Standard conditions: 0°C and 1 atmosphere
    3. You can also choose 0-3V output
    4. Includes temperature drift and linearity error
    5. 5V power supply voltage optional
     
     
    Linear Output
     
    1. The unidirectional airflow mode: (calculation formula)
    Flow = [(VOUT -1 V) / 4 V] × full scale flow
    For example: S4103V has a full-scale flow of 200 SLM. When the output voltage is read at 2.5V,
    the instantaneous flow rate is [(2.5V-1V) / 4V × 200 SLM] = 75 SLM
     
    2. Two-way airflow mode: (calculation formula)
    Forward flow = [(VOUT -3 V)/2 V] × full scale flow
    Reverse flow = [(3 V- VOUT)/2 V] × full scale flow
     
     
    Shell Size
     
    Note 1: The connector can be matched with a connecting line according to customer requirements.