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pressure measurement

General purpose pressure transmitter

High pressure transmitter

Flat film pressure transmitter

Differential pressure transmitter

Communication digital pressure transmitter

Special pressure transmitter

High temperature pressure transmitter

Pressure transmitter chip

Pressure switch

Pressure gauge

Micro pressure switch

Common Rail Pressure Sensor

Single crystal silicon pressure transmitter
Level measurement

Static level

level transmitter

Capacitive level transmitter

Magnetostrictive level meter

Ultrasonic level gauge
Temperature humidity measurement

Temperature sensor

Humidity sensor

Temperature humidity sensor
Wireless IOT
Force measuring and weighing
Acquisition and monitoring

RS485 sensor acquisition software

Brake shoe pressure software
Flow measurement
Product accessories

Hardware accessories

Acquisition and connection

Other accessories

PT500-803

Model: PT500-803
The minimum differential pressure is 100Pa;
3-5 times withstand voltage, suitable for dry gas differential pressure measurement;
High precision, stable, digital calibration adjustment, amplification integrated circuit;
Zero point, fullness, temperature compensation and linear compensation;
Aluminum alloy oxidation shell; 8mm + m10quick plug process connection;

Common keywords:
Micro pressure transmitter micro pressure sensor
Micro pressure transmitter micro pressure sensor
Wind pressure transducer

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

Chip:
The minimum differential pressure is 100Pa;
3-5 times withstand voltage, suitable for dry gas differential pressure measurement;
Zero point, fullness, temperature compensation and 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:
Aluminum alloy oxidation shell; 8mm + m10quick plug process connection;
Small structure, tight wire nut waterproof, electrical connection;
Supporting four / five core shielded cable;

Application:
Pressure measurement and monitoring of negative pressure, dust-free workshop, Department, etc;
Pressure measurement and monitoring of buildings, ventilation, etc;
Pressure measurement and monitoring of dust collection pipeline, waste gas treatment, etc;

Application fields:

Intelligent fire control
Smart city
Natural gas pipeline
Air supply system
Gas supply system
Gas supply pipeline

Product family:

Measuring medium: dry gas
Pressure form: gauge pressure
Range:
0～100、200、300、500、1000（Pa）；
0～1、2、3、5、10、20、30、40、50、70、100（KPa）；
-100KPa～-10KPa～0～100（KPa）；
±500Pa～±100KPa；

withstand voltage: 3～5 times of measuring range
Comprehensive accuracy: ± 0.25% FS; ± 0.5% FS; ± 1% FS
Nonlinearity: ≤ 0.5% FS
Repeatability: ≤ 0.25% FS
Output signal:
Current type: 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, J1939 Protocol)

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

Service life: ≥ 1 million times
Insulation impedance: ≥ 1000 m Ω / 100VDC
Load impedance: current output: ≤ 800 Ω; voltage output: ≥ 50K Ω
Medium temperature: - 20 ～ 70 ℃/
Ambient temperature: - 20 ～ 70 ℃
Compensation temperature: 0 ～ 60 ℃
Response time: ≤ 3MS
Overload pressure: 150% FS
Failure pressure: 3 times of measuring range (less than 40MPa); 2 times of measuring range (measuring range greater than 41mpa)
Electrical connection: Waterproof tight wire nut directly leads out, can be matched with explosion-proof electrical connection
Protection grade: IP65 / IP68
Connecting cable: tightening nut, standard length: 3M
Connection material: aluminum alloy
Process connection: φ 8 quick plug + M10 thread (Universal) Specification can be made by users

Precautions for ordering PT500-802 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;

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 prohibited that the power supply scope of the product exceeds the specified standard of the product;
The measuring medium of the product is: dry gas. It is forbidden to measure liquid, steam or gas medium with high humidity;
It is forbidden to use hard objects (such as: screwdrivers, fingers, nails, etc.) to make the pressure diaphragm output by pressure measurement;
The power supply and signal line should be connected correctly according to the product specification;
When the product is installed, the pressure pipe is made of 8mm hard gas pipe to prevent the expansion of the gas pipe under gas pressure;
It is strictly prohibited that the medium temperature, pressure range and excitation voltage of the measured system exceed the rated range of the transmitter;
Pay attention to protect the outgoing cable of transmitter. When the span is too large, it is recommended to use metal tube for protection or overhead;
Pressure transmitter is a kind of precision measuring instrument. Do not force impact and fall to avoid damaging the core body
The product is installed in a ventilated, dry and non corrosive environment. It is installed in the open air with protective devices to avoid direct sunlight;
Do not let water / water leak / soak into the instrument. Install protective devices in the open air to avoid direct sunlight;

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