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PT500-551/433M
    Imported pressure sensing chip is adopted; The selected patch process has zero point, full-scale compensation and temperature compensation;
    Short distance 433M / Lora wireless transmission and reception, transmission distance 100 – 5000 meters (sight distance);
    Integrated structure, internal battery power supply / battery detachable and rechargeable;
    Diversified acquisition methods (instrument acquisition / PC acquisition / acquisition card / PLC module, etc.);
    One to one or many to one acquisition can be realized;
    High precision, stable, digital calibration, adjustment and amplification integrated circuit;
    The communication protocol collects rs485-rtu / TTL, which can realize low power consumption;
    Stainless steel shell, stainless steel process connection, various pressure sealing methods;
    It can replace foreign high-voltage products of the same type;
    Product description of strain type pressure transmitter:


    Model: PT500-551 / 433M wireless pressure transmitter


    Imported pressure sensing chip is adopted; The selected patch process has zero point, full-scale compensation and temperature compensation;
    Short distance 433M / Lora wireless transmission and reception, transmission distance 100 – 5000 meters (sight distance);
    Integrated structure, internal battery power supply / battery detachable and rechargeable;
    Diversified acquisition methods (instrument acquisition / PC acquisition / acquisition card / PLC module, etc.);
    One to one or many to one acquisition can be realized;
    High precision, stable, digital calibration, adjustment and amplification integrated circuit;
    The communication protocol collects rs485-rtu / TTL, which can realize low power consumption;
    Stainless steel shell, stainless steel process connection, various pressure sealing methods;
    It can replace foreign high-voltage products of the same type;
    Pt500-551-433m / Lora wireless receiving module:
    USB level, industrial wireless serial port transmission module with aluminum alloy shell;
    It is based on the 1W high-power wireless data transmission module developed by Semtech's sx1276 / 1278 chip;
    Loratm spread spectrum modulation frequency hopping technology is adopted, which has high receiving sensitivity and strong anti-interference performance;
    The external integrated PA device makes its communication distance and reception sensitivity far exceed the current FSK and GFSK modulation;
    The wireless data is encrypted by aes128, which makes the data transmission more secure and has strong anti-interference;
    Open transmission distance up to 8000 meters (low rate / 5W) USB level interface
    Operating frequency band: 433 / 470 (1W) MHz, 868 / 915 (500MW) MHz
    Sensitivity up to - 139 dBm
    Output power: 5W (+ 40dbm) / 2W (+ 36dbm) / 1W (+ 30dBm) / 500MW (+ 27dBm)
    Diversified serial port parameter settings
    Lora modulation mode
    Up to 40 communication channels
    Pt500-551 / 433M wireless pressure transmitter is mainly used in:
    Short distance wireless water pressure / level monitoring;
    Short distance wireless water pressure / level monitoring;;
    Remote automatic control system, etc;


    Application fields:
    • Intelligent fire control

    • Smart city

    • Oil pressure system

    • Fire fighting system

    Specification parameter



    Measuring medium: liquid and gas (compatible with product process connecting materials)
    Pressure form: gauge pressure and absolute pressure
    Range:
    0~100MPa; 150 MPa; 200 MPa;
    250 MPa; 300 MPa; 350 MPa; 400 MPa;;
    450 MPa; 500 MPa;
    -0.1~0~0.6~5MPa;
    -100KPa~10KPa~40MPa; ±10KPa~±100KPa

    Comprehensive accuracy: ± 0.25% FS; ±0.5%FS; ±1%FS
    Nonlinearity: ≤ 0.25% FS
    Repeatability: ≤ 0.1% FS
    Output signal:
    433M / rs485-rtu
    433M/TTL
    433M / rs485-rtu (low power consumption)

    Power supply voltage:
    Built in battery 12VDC
    Built in battery 5VDC
    Built in battery 3.7VDC

    Receiving module: 433M wireless receiving, 5VDC power supply, power 100MW / 500MW / 2W
    Insulation impedance: ≥ 1000 m Ω / 100VDC
    Medium temperature: - 20 ~ 80 ℃
    Ambient temperature: - 20 ~ 70 ℃
    Compensation temperature: 0 ~ 70 ℃
    Response time: ≤ 500ms (related to transmission distance, usually set 3S ~ 3600s to collect once)
    Overload pressure: 150% FS
    Stability: ≤± 0.15% FS / year
    Vibration influence: ≤± 0.15% FS / year (mechanical vibration frequency 20Hz ~ 1000Hz)
    Failure pressure: 3 times the range (the range is less than 350Mpa); 2 times the range (the range is greater than 400MPa)
    Protection grade: IP65
    Connecting material: 304 / 316L
    Process connection: m20x1 5. G1 / 2, specifications formulated by users

    Receiving module

    A. Overview:

    Pt500-551-433m / Lora wireless receiving module is an industrial wireless serial port transmission module with USB level and aluminum alloy shell. It is based on the 1W high-power wireless data transmission module developed by the sx1276 / 1278 chip of Semtech company. The device adopts Lora TM spread spectrum modulation and frequency hopping technology, with high receiving sensitivity and strong anti-interference performance, In addition, the external integrated PA device makes its communication distance and reception sensitivity far exceed the current FSK and GFSK modulation. The module encrypts the wireless data with aes128, which makes the data transmission safer and has strong anti-interference.

    B. Characteristics
    The open transmission distance can reach 8000 meters (low rate / 5W)
    USB level interface
    Operating frequency band: 433 / 470 (1W) MHz
    868/915(500mW)MHz
    Sensitivity up to - 139 dBm
    Output power: 5W (+ 40dbm) / 2W (+ 36dbm) / 1W (+ 30dBm) / 500MW (+ 27dBm)
    Diversified serial port parameter settings
    Lora modulation mode
    Up to 40 communication channels
    Operating voltage range: 4.5 ~ 5.5 V
    Operating temperature range: - 40 ~ + 85 ° C

    C. Performance parameters


    參數(shù)

    最小

    典型

    最大

    單位

    條件

    工作電壓范圍

    4.5

    5.0

    5.5

    VDC

    工作溫度范圍

    -40

    25

    85

    接收電流

    < 30

    mA

    發(fā)射電流

    < 600

    mA

    USB 電平

    頻率范圍

    414.92

    433.92

    453.92

    MHZ

    @433MHZ

    470.92

    490.92

    509.92

    MHZ

    @490MHZ

    849.92

    868.92

    888.92

    MHZ

    @868MHZ

    895.92

    914.92

    934.92

    MHZ

    @915MHZ

    調(diào)制速率

    91

    656

    17353

    bps

    LoraTM

    發(fā)射功率范圍

    0

    /

    +30

    dBm

    @433MHz -@490MHz

    0

    /

    +27

    dBm

    @868MHz @915MHz












    Measuring medium: liquid and gas (compatible with product process connecting materials)
    Pressure form: gauge pressure and absolute pressure
    Range:
    0~100MPa; 150 MPa; 200 MPa;
    250 MPa; 300 MPa; 350 MPa; 400 MPa;;
    450 MPa; 500 MPa;
    -0.1~0~0.6~5MPa;
    -100KPa~10KPa~40MPa; ±10KPa~±100KPa
    Comprehensive accuracy: ± 0.25% FS; ±0.5%FS; ±1%FS
    Nonlinearity: ≤ 0.25% FS
    Repeatability: ≤ 0.1% FS
    Output signal:
    433M / rs485-rtu
    433M/TTL
    433M / rs485-rtu (low power consumption)
    Power supply voltage:
    Built in battery 12VDC
    Built in battery 5VDC
    Built in battery 3.7VDC
    Receiving module: 433M wireless receiving, 5VDC power supply, power 100MW / 500MW / 2W
    Insulation impedance: ≥ 1000 m Ω / 100VDC
    Medium temperature: - 20 ~ 80 ℃
    Ambient temperature: - 20 ~ 70 ℃
    Compensation temperature: 0 ~ 70 ℃
    Response time: ≤ 500ms (related to transmission distance, usually set 3S ~ 3600s to collect once)
    Overload pressure: 150% FS
    Stability: ≤± 0.15% FS / year
    Vibration influence: ≤± 0.15% FS / year (mechanical vibration frequency 20Hz ~ 1000Hz)
    Failure pressure: 3 times the range (the range is less than 350Mpa); 2 times the range (the range is greater than 400MPa)
    Protection grade: IP65
    Connecting material: 304 / 316L
    Process connection: m20x1 5. G1 / 2, specifications formulated by users


    Ordering considerations
    Precautions for ordering pt500-551 / 433M products

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

    2. Product power supply and output:
    The selection of power supply range is determined according to the output specifications of the product:
    Conventional rs485-rtu output, DC 12-30vdc power supply;
    TTL output, DC 3.3-5.0vdc
    Low power consumption rs485-rtu output, DC 3.1-6.1vdc;
    When ordering products, please understand the communication protocol first;

    3. Users need to understand the characteristics of the measuring medium of the product:
    Medium specification, medium temperature, medium purity (whether it contains 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 grade;
    Vibration range of equipment;
    Pressure seal mode: taper seal, end face seal, arc seal and spherical seal;
    Whether the installation space meets the overall dimension of the product;

    Precautions for use
    Product power supply: 12-24vdc (range: 9-30vdc) (for customized products, pay attention to product certificate and);

    It is forbidden to use hard objects (such as screwdriver, finger, iron nail, etc.) to make the pressure core subject to pressure measurement output;

    When installing the product, the stressed part is "process connection hexagonal wrench position", and the wrench specification corresponds to the hexagonal wrench position;

    It is strictly prohibited that the medium temperature, pressure range and excitation voltage of the measured system exceed the rated service range of the transmitter;

    Pay attention to the protection of the transmitter antenna. When the transmitting / receiving signal is weak, it is recommended to extend the antenna connection line for acquisition;

    The product is installed in a ventilated, dry and non corrosive environment. Protective devices are installed in the open air to avoid direct sunlight;

    The seals of high-pressure products are made of red copper; During the commissioning and use of high-pressure products, pay attention to the protection of the products to prevent the pressure leakage from hurting the surrounding personnel or damaging the equipment during the commissioning or use;

    Try to avoid direct access to user devices or electrical appliances causing interference;

    Common problem
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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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