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pressure measurement

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Acquisition and monitoring

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Brake shoe pressure software
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PT500-801

Model: PT500-801
Imported differential pressure chip with maximum differential pressure range of 25MPa;
The maximum static pressure is 70MPa;
304 shell material, suitable for measuring the differential pressure of liquid, gas and other media;
High precision, stable, digital calibration, regulation and amplification integrated circuit;
Zero point, full degree, temperature compensation, linear compensation;
A wide range of output signal types, 4-20mA / 0-20mA / 0-5V / 10V / rs485-rtu and low power consumption RS485;
T-shaped structure, easy to install, m20x1.5/g1/2 and other process connection;

Common keywords:
Differential pressure transducer
Differential pressure transducer
Differential pressure transducer

Product parameters
Specification parameter
Ordering considerations
Precautions for use
Common problem
Proposal

Chip:
Imported differential pressure chip, the maximum differential pressure range is 25MPa;
The maximum static pressure is 70MPa;
3-5 times withstand voltage, suitable for measuring differential pressure of liquid, gas and other media;
Zero, full, temperature compensation, linear compensation;
High impedance, high precision and high stability;
More than 1 million times of service life;

Signal processing and output:
24 bit ADC sampling and processing chip;
DSP digital signal conditioning algorithm;
Multipoint linear temperature calibration;
Voltage and current overload protection;
Standard industrial signal output: 4-20mA (two-wire system), 0-20mA (three wire system), 0-5vdc, 0-10vdc, 0.5-4.5vdc (three wire system);

Digital communication signal output: rs485-rtu, ultra-low power rs485-rtu
Advanced 32 bit microprocessor and 24 bit ADC are adopted
The transmission protocol is MODBUS-RTU
Support baud rate: 1200 ~ 57600bps, check bits: none, odd, even
Support the user's secondary calibration, reset, anti reset, restore factory operations
Support 11 kinds of units switching, support floating point, integer, percentage, formatted output
The acquisition interval of 0 ~ 43200 seconds (12 hours) can be set, which can not only meet the needs of high-speed acquisition, but also trigger acquisition once to

minimize power consumption

Digital communication signal output: CAN2.0B
Measurement rate: 10... 1000Hz can be set, the default is 50 Hz

CANopen output built-in complete CANopen protocol stack, in line with ds301, ds404 specifications, support LSS services, support bootloader online upgrade;
Support baud rate (kbps) 20 / 50 / 100 / 125 / 250 (default) / 500 / 800 / 1000; support features of NMT / heartbeat / SDO / PDO / LSS / bootloader; CANopen protocol

stack can be customized according to user requirements;

J1939 output has built-in J1939 protocol stack. PGN, SPN and name can be configured freely, and bootloader online upgrade is supported;
Support baud rate (kbps) 20 / 50 / 100 / 125 / 250 (default) / 500 / 800 / 1000; support free configuration of features such as PGN, SPN and name
The J1939 protocol stack can be customized according to the user's requirements;

Structure:
T-shaped structure, easy to install, m20x1.5/g1/2 process connection;
Small structure, standard din43650 (hesman) electrical connection line;
Supporting four / five core shielded cable;

Application:
Differential pressure measurement and monitoring of liquid, gas and other media;
Differential pressure measurement and monitoring of urban pipe network and equipment hydraulic system;
Differential pressure measurement and monitoring before and after filter screen, filter, etc;

Application fields:

Smart city
Steam supply system
Oil pressure system
Air supply system
Petroleum Pipeline
Gas supply system

Product family:

Measuring medium: liquid, gas and steam
Pressure type: differential pressure
Range:
0～100、200、300、500、600（KPa）；
0～1、2、3、5、10、20（MPa）；
-100KPa～-10KPa～0～100（KPa）；
±10KPa～±100KPa；

Static pressure (pressure): 3 times of the range
Comprehensive accuracy: ±0.25% FS; ±0.5% FS; ±1% FS
Nonlinear: ≤0.5% FS
Repeatability: ≤0.25% FS
Output signal:
Current mode: 4～20mA two wire system; 4～20mA/0-20mA three wire system
Voltage type: 0～5VDC, 0～10VDC, 0.5～4.5vdc three wire system
Digital type: rs485-rtu, low power rs485-rtu
CAN2.0B (supports CANopen and J1939 protocols)

Supply voltage:
24VDC(9～30VDC)
5VDC (0.5-4.5vdc output type)
3.1～6.1vdc (low power rs485-rtu)

Service life: ≥ 1million times
Insulation impedance: ≥ 1000 m Ω/100VDC
Load impedance: current output: ≤ 800 Ω; voltage output:≥50KΩ
Medium temperature: -20～70 ℃/
Ambient temperature: -20～70 ℃
Compensation temperature: 0～60 ℃
Response time: ≤3MS
Overload pressure: 150% FS
Failure pressure: 3 times of range (range less than 100KPA); 2 times of range (range more than 100KPA)
Electrical connection: Standard din43650 (hesman) electrical connection outgoing line
Protection grade: IP65 / IP68
Connecting cable: four core shielded cable, standard length: 3M
Connection material: 304/316
Process connection: m20x1.5 (general), G1/2, etc Specification can be made by users

三、結(jié)構(gòu)尺寸

四、輸出信號

Precautions for ordering PT500-801 products
1. Product range selection:
In order to achieve the best effect of product precision, life, stability and other functions, the range selection of the product is calculated according 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 measuring range;
The static pressure (withstand voltage) is 3 to 5 times of the range value, that is, the maximum pressure value at the high pressure end;

2. Product power supply and output:
The selection of power supply range is determined according to the output specifications of the product:
Conventional 4-20mA / 0-20mA, 0-5V / 10V output, DC 12-30vdc power supply;
General rs485-rtu output, DC 12-30vdc power supply;
0.5-4.5vdc output, DC 5VDC;

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;

It is strictly forbidden that the power supply scope of the product exceeds the specified standard of the product;

The measuring medium of the product is suitable for measuring gas, liquid, steam, etc;

It is strictly forbidden to use hard objects (such as screwdrivers, fingers, iron nails, etc.) to make the pressure diaphragm output by pressure measurement;

The power and signal wires should be correctly connected according to the specifications of the ordered products;

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

Attention should be paid to the protection of the outgoing cable of the transmitter. When the field use span is too large, it is recommended to use metal tube protection or overhead;

Pressure transmitter is a precision measuring instrument, do not force impact, fall, so as not to damage the core

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

It is strictly forbidden to enter water / leak water / soak water in the product instrument, and it should be installed in the open air with protective device to avoid direct sunlight;

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