In the field of industrial automation, pressure transmitters are widely used in various industrial processes as a key measuring element. Flange pressure transmitters have become the first choice of many users due to their convenient installation, compact structure, stable performance and other characteristics. This article will introduce the working principle, application field and purchase precautions of flange pressure transmitters in detail.
Working principle of flange pressure transmitter
Flange pressure transmitter is a sensor that converts pressure signals into standard electrical signal outputs. Its working principle is based on the linear relationship between the deformation of elastic elements and pressure changes. The following is the basic working principle of flange pressure transmitter:
Elastic element: Flange pressure transmitters usually use bellows or diaphragms as elastic elements. When the measured medium acts on the elastic element, the elastic element will produce corresponding deformation.
Sensor: The deformation of the elastic element will cause the resistance strain gauge inside the sensor to deform, thereby changing the resistance value.
Signal processing: After the resistance value change of the resistance strain gauge is amplified, filtered and processed, an electrical signal proportional to the pressure is output.
Output signal: The final output electrical signal can be connected to the industrial control system to achieve real-time monitoring and control of pressure.
Application field of flange pressure transmitter
Flange pressure transmitter has a wide range of applications. The following are several main application scenarios:
Petrochemical: In the oil, natural gas, chemical and other industries, flange pressure transmitters are used to measure the pressure of equipment such as pipelines and containers.
Power industry: In the fields of thermal power generation and hydropower generation, flange pressure transmitters are used to monitor the pressure of equipment such as boilers and pipelines.
Food and beverage: In the production process of food and beverage, flange pressure transmitters are used to monitor pressure to ensure the stability and safety of the production process.
Pharmaceutical industry: In the pharmaceutical industry, flange pressure transmitters are used to monitor the pressure of equipment such as reactors and pipelines to ensure product quality.
Automobile manufacturing: In the automobile manufacturing process, flange pressure transmitters are used to monitor the pressure of equipment such as engines and hydraulic systems.
Precautions for purchasing flange pressure transmitters
Range selection: Select the appropriate range according to the actual application requirements to ensure measurement accuracy.
Material selection: Select the appropriate material according to the characteristics of the measured medium, such as stainless steel, alloy steel, etc.
Installation method: Flange pressure transmitters have two methods of direct installation and plug-in installation. Select the appropriate installation method according to the site conditions.
Protection level: Select the appropriate protection level according to the site environment, such as IP65, IP67, etc.
Output signal: Select the appropriate output signal according to the control system requirements, such as 4-20mA, 0-10V, etc.
Brand and quality: Choose products from well-known brands to ensure product quality and after-sales service.
As an important industrial measuring element, flange pressure transmitters play an important role in various industries. Understanding its working principle, application field and purchase precautions will help users choose the appropriate pressure transmitter and improve production efficiency and product quality. In the purchase process, paying attention to factors such as range, material, installation method, protection level, output signal, brand and quality will help users obtain satisfactory products.