Industrial equipment can not be separated during the manufacturing process and machine performance testing in a variety of mechanical and geometric volume, some industrial equipment in the operation of a variety of volume also often be detected or monitored, including displacement, velocity, acceleration, force, torque , power, pressure, flow, temperature, hardness, density, moisture, specific gravity, viscosity, length, angle, shape, position, surface roughness, surface wave, etc., which belong to the physical quantity.Actual production, living and scientific experiments will encounter chemical, biomass (including medicine), and all this from the perspective of signal engineering point of view, we need through the sensor, which is converted into electrical signals (Modern also converted into an optical signal), and then transmit the signal, processing, storage, display and control, from the perspective of information, these signals together with the source of sound and image information is information, so the sensors and instrumentation, measuring instruments is information Third part of science and technology (information acquisition, information transmission, information processing) an important part.In modern industrial equipment, pressure sensors and instrumentation are an integral part of the reasons, but also consists of two terms, the traditional industrial equipment such as an increase in which the necessary sensors, equipped with sophisticated measurement component, its function and precision can be improved, user-friendly operation and maintenance, security level can be improved, the device can add value;Industrial equipment as the control target automation system or as part of an automated system must be able to part with three automation systems (detection, control and execution) or provide an interface compatible, so that integration as an organic whole, either stand-alone automated or as part of a larger automation devices, we have made use of the industrial equipment to expand. In summary, as industrial equipment itself adding sensors and instrumentation, measuring instruments or provide an interface, is a necessary condition for the upgrading of traditional equipment.Pressure sensor is a non-power into electrical signals to a device, and electronic instrumentation in simulated technical conditions, generally includes a sensor to detect the point of sampling equipment and amplifiers (for immunity processing and signal transmission), and of course power and on-site display section (optional), the amount of electrical signal is generally continuous, discrete amounts of the two, in fact, can also be divided into analog, digital, pulse amount, the analog signal transmission using unified signal (4-20mADC etc.).The digitization process, relatively large changes in instrumentation, through several stages, the recent use of ASIC ASIC, and the sensors and microprocessors and network interface packaged in a device, complete information acquisition, processing, transmission, storage, etc. Features. In the industrial automation instruments instrumentation often called transmitters, such as problem transmitters, pressure transmitter.Because the pressure sensor is used in various industries, coupled with the rapid development in recent years, household appliances, automobiles, information industry in three areas, increase demand for the sensor, the sensor manufacturing industry has developed rapidly, the formation of independent industry, which is boosting the industrial equipment, in particular, the development of semiconductor equipment manufacturing industry, it is necessary to pay special attention so the sensor industry. Pressure Sensor product variety, based on scientific principles and more technology-intensive, with diversity, edge, comprehensive sexual and skills, require a multidisciplinary, with a variety of high-tech.