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

Product description of strain type pressure transmitter:

Model:PT500-704S

Imported ceramic piezoresistive core;
The shell material is made of Teflon imported corrosion resistant material;
Four digit display header, decimal places adjustable;
Sample rate of header: 10 times/S;
4-20mA two wire current output;
Special Teflon corrosion proof cable

Common keywords:
Corrosion resistant digital display pressure transmitter corrosion resistant digital display pressure sensor
Corrosion proof digital display pressure transmitter corrosion proof digital display pressure sensor

Chlorine digital display pressure transmitter chlorine digital display pressure sensor

Chip:

Imported ceramic piezoresistive core;
The selected chip technology has zero point, full scale compensation and temperature compensation;
Signal processing and output:
24 bit ADC sampling and processing chip;
DSP digital signal conditioning algorithm;
Multipoint line temperature calibration;
Voltage and current overload protection;
Four digit display meter, adjustable decimal places;
Sampling rate of meter head: 10 times / S;
4-20mA two-wire current output;

Structure:
The shell is made of corrosion-resistant imported PTFE (Teflon);
Din43650 hesman standard electrical connector;
Special Teflon anticorrosion cable

Application:
Liquid level measurement and monitoring of pH value 3-11;
Chemical, chlorine and other corrosive liquid level measurement and monitoring;

Application fields:

Natural gas pipeline
Air supply system
Gas supply system
Gas supply pipeline

Product family:

Specification parameter

Measuring medium: corrosive liquid and gas
Pressure form: gauge pressure (static pressure type)
Range: 0-50kpa ~ 5MPa;
The minimum range is 50kPa and the maximum range is 5MPa;
Comprehensive accuracy: ± 0.25%FS； ± 0.5%FS； ± 1%FS
Nonlinear: ≤ 0.25% FS
Repeatability: ≤ 0.15% FS
Output signal:
4 ～ 20mA two wire system;
Four digit display, display range: - 1999 - 9999
Sampling rate of pressure gauge: 10 times / S
Power supply voltage: 24 VDC (9 ~ 30 VDC) universal type
Insulation impedance: ≥ 1000 m Ω/ 100VDC
Load impedance: current output: ≤ 800 Ω； Medium / ambient temperature: - 20 ~ 80 ℃
Compensation temperature: 0 ~ 70 ℃
Overload pressure: 150% FS
Stability: ≤ ± 0.15% FS / year
Vibration effect: ≤ ± 0.15% FS / year (mechanical vibration frequency 20Hz ~ 1000Hz)
Failure pressure: 3 times of measuring range (measuring range is less than 350Mpa); 2 times of measuring range (measuring range greater than 400MPa)
Electrical connection: din43650 hesman standard electrical connector
Protection grade: IP65
Connecting cable: special Teflon liquid level cable
Process connection: m20x1.5, G1 / 2, M22x1.5, ZG1 / 2, 1 / 2NPT, etc

Connection material: imported PTFE (Teflon)

Ordering considerations

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, DC 12-30vdc power supply;
Display head, four digits, decimal adjustable;

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;

Precautions for use

Precautions for PT500-704S pressure transmitter
Please refer to the product certificate and instructions for power supply. Different output modes and different power supply voltages are required;
It is strictly forbidden to use hard objects (such as: screwdrivers, fingers, nails, etc.) to make the pressure measurement output of the pressure core body;
The power supply and signal lines shall be correctly connected according to the product specifications;
When the product is installed and used, protect the cable air duct, which is strictly prohibited from water entering or blocking;
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;
When measuring the water level of wells, groundwater, rivers and reservoirs, pay attention to the input position of sensors to avoid the height of sludge;
For a large range of water level products, when the cable length is more than 30 meters, the liquid level transformer can not be directly pulled by the cable;
When measuring the water level with rapid water flow, the liquid level transmitter is installed along with the limit pipe to ensure that the product does not float;
In order to reduce the information interference and ensure the measurement accuracy, the installation position of the transmitter should avoid the equipment with large magnetic field change and radiation as far as possible, such as motor, submersible pump, high-voltage cable, etc;
Field installation transmitter, add lightning rod and other protective devices;

Common problem

Proposal

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