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PT500-503S
    Model: pt500-503s
    Main features:
    Adopt imported voltage sensing chip; select the chip technology, with zero, full range compensation, temperature compensation;
    High precision stable amplifier IC;
    Industrial standard analog quantity 4-20mA output;
    Four LED display integrated instrument, on-site real-time display of pressure value;
    Common keywords:
    Digital pressure transmitter digital pressure sensor
    Digital pressure transmitter digital pressure sensor
    With display pressure sensor with display pressure transmitter
    Product description of strain type pressure transmitter:

    Chip:
    Imported brand pressure sensitive chip wafer;
    Selected chip technology and fully sealed package;

    Core:
    Diffused silicon core, high sensitivity, large output, zero point, full range compensation, temperature compensation, suitable for small range pressure transmitter;
    Strain gauge core, high-strength elastic deformation pressure sensing material, equipped with temperature compensation, has the advantages of impact resistance and fatigue resistance, suitable for general range pressure transmitter;
    Ceramic core, outstanding anti-corrosion performance, with zero point, full range compensation, temperature compensation; suitable for measuring medium with strong corrosive working conditions, range less than 5MPa;

    Structure:
    Small overall structure, diversified process connection modes (thread M20, M16, M12, G1 / 4, G1 / 2, 1 / 2NPT, 1 / 4NPT, flange connection, quick joint, welding, etc.)
    Standard electrical connection interface: Hersman din34650
    Process connection material: 304 or 316;
    Shell material: 304 or 316;
    Standard four core shielded cable for pressure measurement

    Signal processing:
    24 bit ADC sampling processing chip;
    DSP digital signal conditioning algorithm;
    Multipoint line temperature calibration;
    Voltage and current overload protection;
    Standard industrial signal output: 4-20mA (two-wire system);
    Four LED display integrated instrument, on-site real-time display pressure value, display range: - 1999 - 9999;

    Application fields:
    • Intelligent fire control

    • Smart city

    • Oil pressure system

    • Air supply system

    Specification parameter
    1、 Technical parameters

    Measurement medium: liquid and gas (compatible with product process connection materials)

    Pressure form gauge pressure, absolute pressure

    Range: 0-0.6-60mpa

    -0.1~0~0.6~5MPa

    -100KPa~10KPa~40MPa

    ±10KPa~±100KPa

    Comprehensive accuracy ± 0.25% FS; ± 0.5% FS; ± 1% FS

    Nonlinear ≤ 0.25% FS

    Repeatability ≤ 0.1% FS

    Output signal 4-20mA (two-wire system)

    Display instrument: four digit display, display range: - 1999 - 9999

    Power supply voltage: 24VDC (9-30vdc)

    Insulation impedance ≥ 1000m Ω / 100VDC

    Load impedance current output: ≤ 800 Ω; voltage output: ≥ 50K Ω

    Medium temperature - 20-80 ℃

    Ambient temperature - 20-70 ℃

    Compensation temperature 0-70 ℃

    Response time ≤ 5ms

    Overload pressure 150% FS

    5 times of range (range less than 5MPa); 3 times of range (range greater than 5MPa)

    Electrical connection Hersman (din34650)

    IP 65

    Connecting cable: four core shielded cable, standard length: 3M

    Connection material 304 / 316L

    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. Signal output mode of the product:

    The signal output specification depends on the requirements of the back-end acquisition equipment;

    Common are: control and display instrument, PLC acquisition and input module, MCU acquisition card, PC serial port, etc

    If the back-end acquisition equipment is determined according to the output specification of the product, it is recommended to use the general two-wire system 4-20mA;

    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;

    5. Whether the display resolution of the product meets the use requirements of the equipment;

    Display range of display instrument: - 1999 – 9999, with variable decimal point;

    6. The output signal of the product instrument display is only one of 4-20mma two-wire system, without signal output of other specifications (such as voltage 0-5vdc or 0-10vdc output);


    Precautions for use

    Product power supply 24VDC (range: 9-30vdc);

    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;

    When the product is installed, 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 protect the outgoing cable of the transmitter. When the span is too large on site, it is recommended to use metal pipe for protection or overhead;

    The pressure transmitter is a precision measuring instrument. Do not impose 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 from pressure transmitter?

    Reverse connection of power line: wiring according to the requirements of product instruction / product certificate / product label;

    Poor wiring of electrical connector: disassemble the electrical connector and check whether the wiring of each terminal pin is firm;

    Cable open circuit: replace cable

    Transmitter amplifier board burnt out: repair or replacement;

    Question 2: pressure transmitter output 3.92ma?

    The power supply voltage is less than the required value: the normal minimum power supply voltage is 9VDC, check the voltage value;

    Insufficient power of power supply: whether the power of power supply meets the requirements of rated load;

    Excessive load of acquisition circuit: check the circuit load;

    Pressure value exceeds the minimum range value: whether negative pressure is formed at the pressure tap of the transmitter

    Pressure transmitter amplifier board burned out: repair or replacement

    Impact or overpressure core damage: repair or replace;

    Question 3: pressure transmitter output 22mA?

    The power supply voltage is less than the required value: the normal minimum power supply voltage is 9VDC, check the voltage value;

    Insufficient power of power supply: whether the power of power supply meets the requirements of rated load;

    Pressure value exceeds the maximum range value: check the loading pressure of pressure transmitter;

    Pressure transmitter amplifier board burned out: repair or replacement;

    Impact or overpressure core damage: repair or replace

    Question 4: unstable pressure transmitter output?

    Unstable pressure source: check whether the pressure of the pressurization system is stable;

    No grounding wire: pressure transmitter and equipment are grounded;

    The installation position of the transmitter has a large magnetic field: install a shield or replace the installation position;

    The cable is too long and passes through the magnetic field: replace the cable routing position;

    Transmitter water or steam: put the transmitter into the temperature box when the transmitter is not powered on, and heat it to 65 for drying;

    Stone sand or sundries in pressurized pipeline: cleaning;

    Question 5: is there no display on the indicator head of the pressure transmitter, incomplete display characters, and character jumping?

    No display with current output: LED or LCD display broken, repair or replace;

    Incomplete display characters: water, poor contact or faulty welding, repair or replacement;

    Character runout: the vibration of the installation position exceeds the allowable range or the contact is poor, repair or replace

    Display garbled Code: program error or water inflow, etc., repair or replace;

    Question 6: the output of the pressure transmitter is abnormal after the load is connected?

    Output current is very small at 0 pressure: input impedance of load exceeds 500 ohm;

    The output current is very small when the pressure is 0: the power of the power supply does not meet the requirements of the sensor;

    Output current exceeds 15mA at 0 pressure: power supply does not meet sensor requirements;

    No output at 0 pressure: whether the power supply and signal are connected reversely, and there is no corresponding seat;
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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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