The accuracy principle of pressure transmitter
Nowadays, the competition in industrial automation is becoming increasingly fierce, the types of pressure transmitters are also ever-changing, and all kinds of pressure transmitters are also coming. No matter how many types of pressure transmitters are available, the most important thing about a really good transmitter is its structure, whether it is suitable for its production operation, and the measurement environment is unreasonable. These are the most important conditions for choosing a pressure transmitter. Therefore, the integrity of industrial production depends entirely on whether the choice of pressure transmitter is reasonable.
Some medium and high-end pressure transmitters on the market have an accuracy of 0.2%, 0.1%, 0.075%, 0.05% or even 0.04%. Now that a high-precision pressure transmitter is selected, we certainly hope that the selected pressure transmitter can also achieve the highest accuracy when in use. High-precision pressure transmitters often also have the characteristics of high turndown ratio. The accuracy and turndown ratio of pressure transmitters are two independent indicators, which seem to be unrelated to each other. When we select a certain manufacturer's certain range code When using a pressure transmitter, its accuracy seems to be as indicated on the selection sample.
When selecting a transmitter, the high sensitivity of the pressure transmitter is trusted by the majority of users. A pressure transmitter with higher sensitivity has a larger pressure value of the corresponding output signal. The quasi-switching of the signal is very advantageous. Of course, the specific directionality of the sensitivity of the pressure transmitter is also worth pondering. The single vector measurement is suitable for pressure transmitters with lower sensitivity, and the multi-dimensional vector is suitable for pressure transmitters with lower cross-sensitivity. To
When pressure transmitters are used in the field, many unrelated external interference factors will affect the measurement of pressure transmitters. Therefore, when selecting a pressure transmitter, its noise prevention function should also be strong, so as to avoid the measurement influence caused by external factors. To
While selecting the sensitivity of the pressure transmitter, the accuracy of the pressure instrument is also an important factor in the selection of the transmitter. It is determined according to the maximum measurement error that can be achieved during the on-site production and operation.
Microcyber Corporation was established in 2003, mainly engaged in temperature transmitters and pressure transmitters, and is a large domestic manufacturer of temperature transmitters. NCS-PT105ⅡS series intelligent pressure transmitter supports HART, FF, PA protocols, can measure pressure, differential pressure, liquid level, flow and other industrial parameters, and can be widely used in petroleum, chemical, electric power, metallurgy and other industries. Product features: High precision: ±0.075% of full scale (within the range of 20℃, turndown ratio of 10:1; long-term stability: ±0.1% of the maximum scale within 12 months; pressure type selection (differential pressure, gauge pressure, absolute pressure) Pressure, differential pressure, high static pressure differential pressure); self-detection function (sensor, memory, communication); automatic compensation function (ambient temperature compensation, sensor input linearization), product installation and operation are simple, pressure transmitter adopts V/I integration Circuit, few peripheral components, simple and easy maintenance, small size, light weight, convenient installation and debugging. The temperature transmitter has a long service life and low power consumption. The products are exported to Europe, America and other countries.
