How pressure transmitters are used in the compressor industry? Anyone familiar with the industry knows that pressure transmitters are used to sense the pressure of a fluid (actually, pressure) and can perform remote signal transmission. The signal is sent to a secondary instrument or computer for pressure control or monitoring. Automation control front-end components have a very wide range of applications in the field of industrial control. Domestic pressure transmitters currently used in small-scale automation control are generally based on piezoresistive principle. Simply put, varistors produce resistance changes after they are pressurized. Pressure amplification can be performed by amplifier amplification and standard pressure calibration. The performance of the pressure transmitter depends mainly on pressure sensitive components, amplifier circuits, and calibration and aging processes in production. Eva Stethoscope Storage Bag,Eva Vaccination Supplies Storage Box,Eva Dustproof Travel Storage Bag,Portable Emergency Storage Bag Dongguan Yuanlai Packaging Products Technology Co., Ltd. , https://www.ylevacase.com
The status of the domestic compressor industry in terms of pressure control technology: At present, domestic small compressors generally use low-cost pressure switches for simple pressure control, and their main features are low cost. There are two mechanical and electronic pressure switches, usually only one or several switch points. For mechanical pressure switches, manual adjustment of the pressure switch is required when pressure switch points need to be adjusted. Most of the domestic large compressors and screw compressors use pressure transmitters.
The advantages of using a pressure transmitter for pressure control: to achieve multi-point control, easy to set up, using a pressure transmitter, the detected pressure signal is a continuous signal, so the pressure can be set arbitrarily, and the setting is very convenient, not to adjust the pressure change The transmitter , only need to set the electronic control to achieve advanced control of the compressor operation, to extend the life of the compressor using the pressure transmitter, can achieve advanced compressor operation control, so that the compressor runs more smoothly, and if the application of frequency conversion Technology can greatly reduce the number of compressor start-ups, prolong life, and save energy. At the same time, the sensitive components used in pressure transmitters are non-mechanical, so they basically do not require maintenance, and the damage rate is extremely low. Provides control accuracy and better component reliability. Since the pressure transmitter's detection accuracy is several times higher than the pressure switch, the control accuracy is correspondingly improved.
   The pressure transmitter is mainly composed of three parts: a load cell sensor (also called a pressure sensor), a measurement circuit, and a process connector. Physical parameters of the gas pressure can change the feel of the load cell sensors, liquid, etc. into a standard electrical signal (e.g., 4 ~ 20mADC the like), to indicate an alarm is supplied, recorder, regulators, etc. secondary instrument to measure, indicative of And process adjustments.
   Pressure transmitter can be divided into general pressure transmitter (0.001MPa ~ 35MPa) and micro differential pressure transmitter (0 ~ 1.5kPa) according to the measurement range, three kinds of negative pressure transmitter; classification from the precision point of view, because The accuracy of our national standard is 0.5%. So in recent years it can be divided into high precision pressure transmitter (0.1% or 0.2% or 0.075%) and general pressure transmitter (0.5%)
How does a pressure transmitter apply to the compressor industry?
November 19, 2023