• Product description
  • Technical specifications
  • Product portfolio
    • AO910PS/920PS/950PS intelligent digital pressure switch

    measuring principle


     

    The product uses diffusion silicon and ceramic capacitors as pressure sensors,

     

    obtains the pressure value through the corresponding detection circuit,and

     

    controls two independent sets of relays according to the set alarm parameters

     

    Electrical signal output.You can also choose the sound and light alarm

    accessories.

     


     

    main features


     

    ▶Pressure,absolute pressure and negative pressure;
     

    ▶Flanges:flat diaphragm,inserted cylinder diaphragm;
     

    ▶Liquid contact material:316L,TAN,HAS-C,MONEL,316L coated with

     

    tetrafluoroethylene,316L coated with gold;
     

    High precision,good stability;
     

    The seismic performance is good and there are no mechanical moving parts;

    LED high brightness 5-digit display;
     

    24VDC power supply;
     

    1 channel 4~20mA output;
     

    ▶Equipped with 2 relay contact outputs;
     

    ▶ Can be connected to a field sound and light alarm(it will occupy one relay output);
     

    ▶ With keys,you can set various parameters;
     

    ▶ Optional separation of hot spots;
     


     

    application scenarios
     

      It can be used in industrial sites for pressure,liquid level and other occasions,and can also be used in

    equipment pressure measurement supporting instruments.

     

     
     
  • technical parameter

     

    accuracy±0.1%、±0.2%、±0.5%、±1%
    Absolute
    pressure
    0~35MPa each interval
    gage pressure100KPa~100MPa each interval
    negative
    pressure
    100KPa~2MPa each interval
    mediumLiquids,gases,vapors
    temperature40.0~85℃ (direct),the extension range can be extended by adding accessories
    such as pressure guiding tube,condensing bend and condenser
    protectBetter than IP65
    stabilityBetter than ±0.25%FS/3 years
    Vibration effectsAt 20~200Hz in any direction,the variation is less than ±0.02%BFSL
    shock effectWhen the 100G impact is 11ms in any direction,the change is less than ±
    0.02%BFSL
    Load impactAs long as the terminal voltage of the transmitter is greater than 12VDC
    Production
    options
    No oil,no water,no oil,no fat
    explosion-proofExiallCT6 Intrinsically safe,ExdIICT6 Flameproof
    Power Supply
    Voltage
    12~36VDC,four-wire
    output4~20mA,2 sets of relays(if sound and light alarm is selected,one set will be
    occupied),RS485
    SIL attestationNO.OP181106.FAFQD24
    CPACPA Minliang Machine 846(Fujian Provincial Bureau of Quality and Technical
    Supervision)
    conformity
    certificate of
    protection [of
    electrical
    apparatus for
    explosive
    atmospheres]
    CNEX18.5290X
  • AO910PS Intelligent Digital Pressure Switch Specification Sheet
    Instrument ModelAO910PSntelligent Digital Pressure Switch
    Measurement RangeA0~1 kPa~2.5 kPa   (note1)
    B0~2.5 kPa~7 kPa   (note1)
    C0~7 kPa~20 kPa
    D0~20 kPa~70 kPa
    E0~35 kPa~100 kPa
    F0~70 kPa~200 kPa
    G0~100 kPa~350 kPa
    H0~200 kPa~700 kPa
    I0~350 kPa~1.0MPa
    J0~700 kPa~2.0MPa
    K0~1.0MPa~3.5MPa
    L0~2.0MPa~7.0MPa
    M0~3.5MPa~10MPa
    N0~7MPa~20MPa
    O0~10MPa~35MPa
    P0~20MPa~100MPa
    Diaphragm Material22316L
    Output SignalADual Relay Output + RS485 Communication
    BDual Relay Output (Standard Configuration)
    CDual Relay Output + Transmitter Output (4~20mA)
    DDual Relay Output + Transmitter Output (4~20mA) + RS485 Communication
    Basic Error20.001
    30.01
    40.1
    51
    Process Connection RStandard Type with M20×1.5 External Thread
    T1Flush Diaphragm Type with G1/2 External Thread (Measurement Range: Above Range F)   
    0Custom Machining per User-Provided Dimensions
    OptionsM33 1/2-Digit LCD Digital Display Head
    GGauge Pressure Measurement
    AAbsolute Pressure Measurement
    FNegative Pressure Measurement
    HExplosion-Proof Audible and Visual Alarm
    BSealed Gauge Pressure Measurement
    SHeat Sink and Process Connection Fittings
    B3Pipe-Mounted Flat Bracket
    B4L-Shaped Mounting Bracket
    C2M20x1.5-Φ14
    EMounting Flange Available (Specify Dimensions in Remarks)
    XOil-Free Requirement
    YWater-Free and Oil-Free Requirements 
    ZDegreasing Treatment
    dExplosion-Proof Type Exd II CT6 (Note 2)
    LLightning Protection
    QUser Agreement / Custom Agreement
    Power Supply MethodDDC 9~36V
    Selection ExampleAO910PS - L - 22 - B - 3 - R - M3 - C2 - d
       
    Note 1Suitable for measuring non-corrosive, dust-free, and dry gases
    Note 2For models with a range below 350kPa (AO910-G), the housing has a vent hole and cannot achieve explosion-proofing. If the customer uses an air guide cable to connect to a safe area, explosion-proofing can also be achieved for this range. Please specify this when placing an order.
    Note 3The dual relay output of this product consists of normally open (NO) + normally closed (NC) contacts

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Address:

No.36, Longhui Road, Wujin National Hi-Tech Industrial Development Zone, Jiangsu Province, China

Address:

Building 5 and 11, Fuzhou IoT Industrial Park, 

No. 12 Xingye West Road, Mawei District, Fuzhou City

Tel:

+86-13055728858

Email:

aotai03@fjautec.com      Mr. Zhou

aotai01@fjautec.com       Mr. Liao

aotai02@fjautec.com      Mr. Zhang

aotai04@fjautec.com      Mr. Chen

Email:

autec@163.com


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