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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

PT500-703

Model: PT500-703
Flat film / diaphragm pressure sensing and anti blocking structure design, suitable for melt / fluid medium;
Adopt imported pressure sensitive chip; select the chip technology;
High precision, stable, digital calibration, adjustment, amplification integrated circuit;
Wide range of output signal types, 4-20mA / 0-20mA / 0-5V / 10V / rs485-rtu and low power RS485
Small structure, 27mm diameter, suitable for the installation of small space equipment;
More than 1 million service life;
It can replace the same type of high voltage products abroad;

Common keywords:
Flat film pressure transmitter, flat film pressure sensor, thick film pressure transmitter
Diaphragm pressure transmitter flush membrane pressure sensor anti blocking pressure transmitter
Cavity less pressure transmitter asphalt pressure sensor paint pressure sensor

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

Chip:
Flat film / diaphragm pressure sensing and anti blocking structure design, suitable for melt / fluid medium;
Adopt imported pressure sensitive chip; select the chip technology;
High impedance, high precision and high stability;
Diaphragm structure: thick film piezoresistive, thin film silicon chip, flange type large diaphragm;
More than 1 million service life;
Signal processing and output:
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), 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 32bit microprocessor and 24bit ADC
The transmission protocol adopts the general MODBUS-RTU protocol
Support baud rate: 1200 ~ 57600bps, check bit: none, odd, even
It supports the user's secondary calibration, clearing, anti clearing, factory restoration and other operations
Supports 11 unit switches, floating point, integer, percentage, format output
The acquisition interval of 0-43200 seconds (12 hours) can be set, which can not only continuously acquire, but also meet the occasion of high-speed acquisition, and can trigger acquisition once, minimizing power consumption
Structure:
Thick film structure: deep argon arc welding, connecting elastic material and process joint, high strength, impact resistance, fatigue resistance;
Thin film structure: laser welding, connecting elastic materials and process joints, silicon oil medium transfer pressure, fast response, fatigue resistance, small range;
The overall structure is small and the process connection mode is diversified (m20x1.5, G1 / 2, ZG1 / 2, 1 / 2NPT (thread diameter ≥ 17mm) DN50, etc.);
Process connection material: 304 or 316;
Application:
Melt / fluid / viscous medium pressure measurement and control;
Equipment pressure measurement in industry / power / oil / automation and other fields

Application fields:

Oil pressure system
Metallurgical equipment
petrochemical industry
Petroleum Pipeline
Gas supply pipeline
Hydraulic equipment

Product family:

Technical parameters
Measuring medium: melt, fluid, liquid and gas containing impurities (such as paint, toothpaste, pigment, etc.)
Pressure form: gauge pressure, absolute pressure
Range: 0 ～ 0.6, 1, 2, 5, 10, 15, 20, 25, 30, 40, 50, 60, 100 (MPA);
0～10、20、30、50、100、150、200、300、400、500、600（KPa）；
-100KPa～10KPa～40MPa；
±10KPa～±100KPa；
Comprehensive accuracy: ± 0.25% FS; ± 0.5% FS; ± 1% FS
Non linear: ≤ 0.25% FS
Repeatability: ≤ 0.1% 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
Power supply voltage: 24VDC (9-30vdc)
3.1-6.1vdc (low power rs485-rtu)
5VDC (0.5-4.5vdc output type)
Service life: ≥ 1 million times
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
Failure pressure: 3 times of range (range less than 40MPa); 2 times of range (range greater than 41mpa)
Electrical connection: din43650 Hersman standard electrical connector
Protection grade: IP65
Connecting cable: four core shielded cable, standard length: 3M
Connection material: 304/316L
Process connection: m20x1.5, G1 / 2, ZG1 / 2, 1 / 2NPT, DN50 Specifications can be made by users

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 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;
Low power rs485-rtu output, DC 3.1-6.1vdc;
When output rs485-rtu, please understand the communication protocol first;

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;

Product power supply range, 9-30vdc (low power RS485 output type is 3.1-5vdc);
It is strictly prohibited to use hard objects (such as screwdriver, finger, iron nail, etc.) to make the pressure diaphragm output under pressure measurement;
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 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;
It is strictly prohibited to enter / leak / soak water in the product instrument, and protective devices shall be installed in the open to avoid direct sunlight;

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