GE 125T1783G0001 - PRESSURE TRANSMITTER

GE 125T1783G0001 - PRESSURE TRANSMITTER

Principle of operation

Capacitive: The two pressures of the measured medium are passed into the high and low pressure chamber, and the pressure acts on the isolation diaphragm on both sides of the sensitive element, and then is transmitted to both sides of the measuring diaphragm through the isolation piece and the filling liquid inside the element. Measuring diaphragm and the electrodes on both sides of the insulating film each side of a capacitor, the two sides of the pressure is not the same, the measuring diaphragm displacement, the displacement and the pressure difference is proportional to the diaphragm displacement leads to changes in the capacitor distance between the two plates, so that the two sides of the capacitance is not the same, and finally through the oscillation and demodulation link, the capacitance change into a proportional to the pressure of the electrical signal output.

Piezoresistive: the core of the piezoresistive pressure sensitive element, usually made of semiconductor materials. When the measured pressure acts on the sensitive element, the resistivity of the semiconductor material changes, through the measurement circuit will be converted into electrical signals, generally connected to the sensitive element in the form of a Wheatstone bridge, resistance changes, the bridge output voltage changes accordingly, and then amplify the output signal of the bridge, filtering, correction and other processing, the output of a standard electrical signal to reflect the size of the measured pressure.

Strain type: the metal resistance strain gauge is used as the sensitive element, when the measured pressure acts on the strain gauge, the strain gauge generates strain due to the force, the resistance value of the metal resistance strain gauge is related to its degree of deformation, after the deformation of the strain gauge, its resistance value changes accordingly, the resistance value change is converted into an electrical signal through the measuring circuit, and after subsequent processing and amplification, the standard electrical signal is output, which is proportional to the measured pressure. The signal is proportional to the measured pressure.

Performance characteristics

Highly accurate measurement: It can accurately measure the pressure value and provide accurate data support for industrial process control, and the measurement accuracy can reach ±0.1% - ±0.5% and other different levels, the specific accuracy depends on the specific model and configuration of the product.

Wide measuring range: It can measure different ranges of pressure, from low pressure to high pressure, to meet the needs of various industrial application scenarios, for example, the measuring range can be from a few pascals to hundreds of megapascals.

Strong stability: in the process of long-term operation, can maintain stable performance, not affected by ambient temperature, humidity and other factors, to ensure the reliability of the measurement results, some models of the operating temperature range of up to - 20 ℃ - +85 ℃.

Fast response: with a short response time, can reflect the pressure changes in a timely manner, for some need to quickly monitor the pressure changes in the dynamic process control is critical, the response time is generally in the milliseconds.

Technical parameters

Measuring range: different application scenarios require different measuring ranges, GE 125T1783G0001 pressure transmitter measuring range is generally between 0 - 100kPa and 0 - 100MPa, the specific range can be selected according to the actual needs.

Accuracy level: The accuracy level is usually ±0.1%, ±0.2%, ±0.5%, etc. The high-precision measurement can meet the strict requirements of pressure control occasions.

Output Signal: Common output signals include 4-20mA current signal, 0-5V or 0-10V voltage signal, etc., which are compatible with various control systems and instruments.

Power supply voltage: generally 12 - 36V DC, a wide range of power supply voltage adaptability, can be in different power supply conditions under normal operation.

Application Fields

Petrochemical industry: In the process of petroleum refining and chemical production, it is used to monitor the pressure in pipelines, reactors, storage tanks and other equipment to ensure the safety and stability of the production process, for example, monitoring the pressure of the crude oil distillation tower and controlling the fractional distillation process.

Power industry: Used for pressure monitoring of boilers, turbines, generators and other equipments in power plants to ensure the normal operation of power equipments and improve the efficiency and reliability of power generation, such as monitoring the steam pressure of turbines.

Pharmaceutical industry: In the process of drug production, the pressure of various reactors, storage tanks, etc. is accurately measured and controlled to ensure the quality of drugs and production safety, such as controlling the pressure in the pharmaceutical reactor to ensure the smooth progress of the chemical reaction.

Food and beverage industry: It can be used for pressure monitoring in food processing, such as the pressure monitoring of sterilisation kettle in canning production, and carbon dioxide pressure control in beverage production, etc., to ensure product quality and production safety.