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PT500-302
    Product description of strain type pressure transmitter:


    Chip:
    Adopt imported pressure sensitive chip; select the chip technology;
    High impedance, high precision and high stability;


    elastomer:
    Imported elastic materials, precision machining integrated structure, strict machining, heat treatment, aging process;
    The highest range is 500MPa, and the safety failure pressure is over 750MPa;
    More than 1 million service life;
    High impedance, high precision and high stability; high pressure, impact resistance and fatigue resistance;

    Structure:
    Integral structure, without welding connection;
    Process connection seal: taper seal, face seal, spherical seal, high strength, impact resistance, fatigue resistance;
    Compact and reliable overall structure;
    Four core color wire or enameled wire;

    Signal processing:
    Constant voltage supply, differential bridge output;
    With temperature compensation;


    Application:
    Pressure sensing core of pressure transmitter;
    Pressure sensor core;
    Pressure measurement in other civil / industrial automation fields

    Application fields:
    • Steam supply system

    • Oil pressure system

    • Metallurgical equipment

    • petrochemical industry

    Specification parameter
    1、 Technical parameters
    Measuring medium: liquid and gas (compatible with connecting materials of product process)
    Pressure form: gauge pressure, absolute pressure
    Range: 0-70, 100, 150, 200, 250, 300, 350, 400, 450, 500 (MPA)
    Comprehensive accuracy: ± 0.25% FS; ± 0.5% FS; ± 1% FS
    Non linear: ≤ 0.25% FS
    Repeatability: ≤ 0.1% FS
    Output signal: 1.0 ± 0.5mv/v (four wire system / six wire system) differential bridge output
    Power supply voltage: constant voltage: 5VDC (3-10vdc)
    Insulation impedance: ≥ 1000m Ω / 100VDC
    Output impedance: 1650 Ω
    Medium temperature: - 20-80 ℃
    Ambient temperature: - 20 ~ 70 ℃
    Compensation temperature: 0 ~ 70 ℃
    Response time: ≤ 5ms
    Overload pressure: 150% FS
    Failure pressure: 3 times of range (range less than 200MPa); 2 times of range (range greater than 201mpa)
    Electrical connections: direct leads
    Protection grade: IP65
    Connecting cable: four core color cable, standard length: 50mm
    Connecting material: imported elastomer material
    Process connection: M20x1.5, G1/2, G1/4, ZG1/4, 1/4NPT, ZG1/2, G3/8, M12x1.5

    2、 Specification and model


    3、 Structural dimensions

    4、 Electrical connection

    5、 Installation method

    Ordering considerations
    1. Product range selection:
    In order to achieve the best effect of product accuracy, life, stability and other functions, the range selection of the product is calculated by referring to the following formula:
    Range = x (1.2-1.5) times of the maximum system pressure;
    The actual measuring pressure range of the product should be 15% - 80% of the range;

    2. Product power supply and output:
    The power supply of pressure core is constant voltage source (3-10vdc);
    The core output is differential bridge output;
    The output signal is about (0.6-1.5) MV / V

    3. The user should understand the measurement medium characteristics of the product:
    Medium specification, medium temperature, medium purity (whether containing impurities or particles, etc.);

    4. Users should understand the installation environment and installation method of the product:
    Indoor or outdoor installation;
    Ambient temperature;
    Required sealing level;
    Vibration range of equipment;
    Installation method: thread, flange, special structure;
    Whether the installation space meets the overall dimension of the product;

    Precautions for use
    The power supply of the product is constant voltage power supply, 5VDC (range: 3-10vdc);
    It is strictly prohibited to use hard objects (such as screwdriver, finger, iron nail, etc.) to make the pressure core body under pressure measurement output;
    The power and signal wires shall be correctly wired according to the specifications of the ordered products;
    During product installation, the stressed part is "process connection hexagon wrench position", and the wrench specification corresponds to hexagon;
    It is strictly prohibited that the medium temperature, pressure range and excitation voltage of the tested system exceed the rated use range of the transmitter;
    Pay attention to the protection of the lead of the pressure core. When it is connected with the amplification conditioning board or the acquisition card, the lead is strictly prohibitedfrom being pulled;
    The pressure core is a precision measuring instrument. Do not force impact or smash to avoid damaging the core
    The product is installed in a ventilated, dry and non corrosive environment, and installed in the open with protective devices to avoid direct sunlight;
    No water or water leakage is allowed for the product instrument, and protective devices shall be installed in the open air to avoid direct sunlight;
    Common problem
    Question 1: no output of pressure core?
    Reason--------------------------Processing method
    Lead open circuit--------------Check leads and repair
    Broken Bridge------------------Unable to repair, replace
    Poor wire connection----------Rewiring

    Question 2: is the pressure core output correct?
    Reason----------------------------------------Processing method
    Wrong bridge and road connection-------Connect the wires correctly according to the product instructions
    External force on chip sealing-------------Check and remove external force
    Core or chip damage-----------------------Unable to repair, replace

    Question 3: unstable pressure core output information?
    Reason-----------------------------------------------------------Processing method
    Poor wire contac------------------------------------------------Check leads and repair
    External force on chip sealing--------------------------------Check and remove external force
    Power supply of constant voltage source is unstable-----Check and repair
    Input impedance mismatch of constant voltage source--Replace
    Insufficient power of constant voltage source-------------Replace
    Overpressure or large impact of elastomer-----------------Replace
    Poor insulation--------------------------------------------------Check and repair
    Proposal
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    Foshan puliang Electronic Co., Ltd

    Tel:0757-26619568 Fax: 0757-26619508

    24-hour online technical support:13790092618

    Cloud platform:www.puliangiot.com

    Address:501, block 8, phase 5, Rongli tianfulai industrial city, Ronggui town, Shunde District, Foshan City

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