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Product description of strain type pressure transmitter:

Model: PT500-590

Imported pressure sensing chip is adopted; Selected patch process;
Integrated pressure and temperature, simultaneous measurement and wheel patrol display;
Pressure and temperature integrated LCD display meter, 5-digit display;
Switching of multiple pressure units; Numerical value display, percentage display;
Power supply mode: 3.6vdc power supply from built-in battery or 5VDC / 24VDC power supply from external power supply;
High precision, stable, digital calibration, adjustment and amplification integrated circuit;
Digital output signal Modbus rs485-rtu communication protocol;
Industrial grade 2088 cast aluminum alloy explosion-proof shell, reliable and solid strength;
It can replace foreign products of the same type;

Common keywords:
Temperature pressure integrated rs485-rtu low power digital display flameproof pressure transmitter
High precision multipoint temperature and pressure compensation battery powered external powered pressure sensor

Chip:
Imported pressure sensing chip is adopted; Selected patch process;
Zero point, full degree, temperature compensation and linear compensation;
High impedance, high precision and high stability;
More than 1 million times of service life;

Signal processing and output:
Adopt advanced 32bit microprocessor and 24bit ADC;
Ultra low power design, ultra low power RS485 design;
Multipoint curve fitting technology;
Battery power collection and management;
Independent dual channel acquisition and integrated design, which can be used as separate pressure, separate temperature and temperature pressure integration;
8-bit LCD 8-segment digital display, ignoring the value error;
Dynamic backlight management, convenient operation to the greatest extent and save power consumption to the greatest extent;
Support user reset, de reset, user calibration, factory recovery and other operations;
The acquisition interval is 0 ~ 65535 seconds, which can be set according to the site conditions to minimize power consumption;
Support the free configuration of Modbus RTU protocol, and users can make private RS485 protocol;

Structure:
Thick film structure: deep argon arc welding, connecting elastic materials and process joints, high strength, impact resistance and fatigue resistance;
PU membrane structure: laser welding, connecting elastic materials and process joints, silicone oil medium to transfer pressure, fast response, fatigue resistance, small range;
Industrial grade 2088 cast aluminum alloy explosion-proof shell, reliable and solid strength;
Small overall structure and diversified process connection modes (m20x1.5, G1 / 2, ZG1 / 2, 1 / 2NPT (thread diameter ≥ 17mm), DN50, etc.);
Process connection material: 304 or 316;

Application:
Oil pressure, water pressure and air pressure measurement and monitoring;
Equipment pressure measurement in industrial / power / Petroleum / automation and other fields;

Application fields:

Intelligent fire control
Smart city
Oil pressure system
Air supply system

Product family:

Specification parameter

Main technical parameters
Measuring medium: liquid, gas, steam, etc
Pressure form: gauge pressure and 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
Nonlinearity: ≤ 0.25% FS
Repeatability: ≤ 0.1% FS

Output signal:
Rs485-rtu (low power consumption) (four wire system)
Lcd5 digit display meter

Supply voltage:
Built in 3.6vdc1200mah battery (14250 specification)
External power supply: 24VDC
External power supply: 5VDC

Acquisition frequency: 1-3600s / time, settable (data update frequency)
Service life: ≥ 1 million times
Insulation impedance: ≥ 1000 m Ω / 100VDC
Power consumption: the standby current is less than 50ua, and the acquisition current is less than 1.5mA
Medium temperature: - 20 ~ 80 ℃
Ambient temperature: - 20 ~ 70 ℃
Temperature compensation: 70 ～ 0 ℃
Response time: ≤ 5ms
Overload pressure: 150% FS
Failure pressure: 3 times the range (the range is less than 40MPa); 2 times the range (the range is greater than 41mpa)
Electrical connection: the waterproof tightening nut directly leads out, which can be matched with explosion-proof electrical connection
Protection grade: IP65
Connecting cable: four core shielded cable, standard length: 3M
Connecting material: 304/316L
Process connection: M20x1.5 G1/2, ZG1/2, 1/2NPT, DN50... Specifications can be formulated by users

Ordering considerations

Precautions for ordering PT500-590 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;
Temperature range: distinguish between measuring temperature and medium. The required product is measuring medium temperature or testing ambient temperature. Explain the situation with the salesperson when ordering;

2. Product power supply and output:
The selection of power supply range is determined according to the output specifications of the product:
A. Built in battery 3.6v1200mah;
B. External 5VDC power supply;
C. External 9-24vdc power supply;
Conventional Modbus rs485-rtu low-power digital output;
5-digit LCD display meter; The default acquisition time is 1s / time;

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;
Installation method: thread, flange and special structure;
Whether the installation space meets the overall dimension of the product;

Precautions for use

Product power supply range, internal battery power supply: 3.6vdc, external power supply 5VDC or 24VDC;

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

The battery installation, external power supply and signal line shall be wired correctly according to the specifications of the ordered products;

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

The pressure transmitter is a precision measuring instrument. Do not impose impact and beating to avoid damaging the core

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

Water / water leakage / soaking is strictly prohibited for product instruments. Protective devices shall be installed in the open air to avoid direct sunlight;

Common problem

Proposal

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