Principle and application of pressure transmitter
This article is edited by Shenzhen Huanan Hengtai Industrial Co., LTD., if reproduced, please indicate the source
The principle and application of the pressure transmitter can be summarized as follows:
principle
The working principle of the pressure transmitter is based on converting the physical pressure parameters of a gas or liquid into a standard electrical signal for remote transmission, monitoring and control. There are two main types of conversion principle:
Piezoresistive: The piezoresistive effect of metal foil is used to measure pressure. When external pressure is applied to the piezoresistor, the resistance value of the metal foil changes. By measuring the change in the resistance value, the pressure can be determined.
Capacitive: Use capacitive effects to measure pressure. It contains two metal electrodes, and when the external pressure changes, the capacitance value also changes. By measuring the change in the capacitance value, the pressure can be determined.
Apply
Pressure transmitters are widely used in a variety of industrial automation environments, including but not limited to the following areas:
Industrial automation: used to monitor the pressure of liquids, gases and other media in the production process to achieve precise control. For example, in the chemical production process, by using pressure transmitters to monitor pressure changes, the working state of production equipment can be adjusted in real time to ensure the safety and stability of production.
Hydraulic engineering: Monitor the pressure inside DAMS, pipelines and other facilities to ensure safe operation.
Energy power: In the field of thermal power generation, nuclear power generation and other fields, responsible for monitoring the pressure parameters of boilers, turbines and other key equipment.
Environmental monitoring: Help environmental protection departments to monitor atmospheric pressure, water level and other environmental parameters in real time to provide data support for environmental protection.
Oil and gas industry: Measure the pressure of Wells, piping systems, and tank levels to ensure the safe production and delivery of oil and gas.
Automotive manufacturing: Measuring the compression cylinder pressure of the engine, hydraulic pressure of the brake system, etc., to ensure the performance and safety of the vehicle.
Medical equipment: Measures and monitors vital parameters such as blood pressure and ventilator pressure to provide accurate diagnosis and treatment support for medical personnel.
To sum up, the pressure transmitter is a powerful sensor that provides important technical support for automated control and safety monitoring in all walks of life through its high-precision and high-reliability pressure measurement and conversion capabilities.
