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Author: Smartweigh–Multihead Weighter
In the industrial production of automation technology and civil electronic weighing equipment, most of the basic pulse signal multihead weighers are used, and the digital analog multihead weighers are reused at this stage. Because of the pulse signal caused by the basic principle of resistor strain force transformation, it must be The pulse signal is converted into a simulated analog working voltage or a simulated analog current according to the smart transmitter. A lot of work experience has been accumulated in the production and processing technology, power circuit compensation and adjustment, pulse modulation and other aspects, so the application is more common. However, its output data signal is small, the transmission distance is short, and the anti-interference performance is poor. The new compensation items are paired with t-test. The power circuit compensation and adjustment processing technology is complicated, which not only takes time and labor, but also has low compensation precision; the weighing display information control instrument is complicated, Congenital shortcomings such as inconvenient installation and adjustment have determined the development trend of digital and analog multihead weighers towards digital display. Only the digital conversion module outside the strain force bridge circuit is parasitic, and the pulse signal is changed to an analog signal.
Therefore, a digital conversion method has emerged. One is to convert the output data signal of the digital analog multihead weigher into an analog signal output according to the data intelligent transmitter installed in it, which is generally called an intelligent multihead weigher. Namely: digital analog multihead weigher + data intelligent transmitter = digital display multihead weigher. The digital display sensor adopts integrated A/D conversion power supply circuit, intelligent data signal transmission and digital filtering technology. The data signal transmission distance of the sensor is far away, and the anti-interference is strong. The shielding case, these two characteristics alone determine the advantages of its anti-interference, and improve the reliability of the inductor to a very large level.
The digital display multihead weigher converts the traditional sensor pulse signal into a high-precision RS485 analog signal, which can eliminate the need for calibration, and can be used in industrial production automatic control systems. The loaded force information content of the applicator is converted into an analog signal. The weighing pull pressure sensor is called the cardiovascular of the weighing equipment, and its characteristics determine the accuracy and reliability of the weighing equipment on a very large level. When designing weighing equipment, it is often difficult to use sensors.
How to use a weight with good characteristics A multihead weigher is actually a device that converts a quality data signal into an electronic signal output that can be accurately measured. When using a sensor, you should first consider the specific office environment where the sensor is located. This is particularly important for the proper use of the sensor. It is related to whether the sensor can work normally, other safety factors and service periods, and even the availability of all electronic components. reliability and reliability. So how to choose a stronger pressure sensor for weighing and pulling? I will give you a detailed introduction below.
Weighing and pulling pressure sensors are widely used in various metal material foil-type resistance strain gauges with a resistance value of 350Ω, so as to make various weighing equipment, which have comprehensive high precision, good reliability and display information in specific applications. convenience and other features. The application environment of the weighing pull pressure sensor: the weighing pull pressure sensor is actually an output device that converts the quality data signal into an electronic signal output device that can be accurately measured. When using a sensor, you must first consider the specific office environment where the sensor is located. This is particularly important for the proper use of the sensor. It is related to whether the sensor can work normally and other safety and use period, and even the trustworthiness of all electronics. security and safety factor.
Under normal circumstances, the high temperature natural environment causes problems such as melting of coating raw materials, spot welding, and structural transformation of polyurethane elastomer thermal stress to the sensor; smoke, dust, humidity and cold cause short-circuit failure of the sensor; in the environment with high corrosion It can cause damage to the polyurethane elastomer of the sensor or cause a short circuit fault condition; the magnetic field will affect the output of the sensor. Under the relative environmental factors, you must choose a matching force measuring multihead weigher before you can consider the necessary weighing regulations.
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