With the development of sensor technology,electronic instrumentation technology,speed sensor and weighing sensor that can output signals quickly replace the corresponding mechanism for mechanical belt scale,do the enlargement processing on the speed and the weight signal,and implementation of various operations can be completed in electronic instrument,the weighing accuracy improves,the scale aircraft structure is simplified,so belt scale rapidly and thoroughly replaced mechanical belt scale.Belt scale industry in our country has experienced the process of introduction,absorption,digestion and improvement,and now the technology is quite mature,so it basically can meet the requirements of industrial production on the measurement,however,the industry is facing a development bottleneck.Where is the future trend of belt scale going?The trends of belt scales will show the following characteristics:

1、more functions
From the eighties of last century,microcomputer digital belt scale began to replace conventional analog belt scale secondary instrument.In addition to its calculation accuracy is much higher than conventional analog belt scale secondary instrument,function is also rich in its main features.

2、real-time online calibration function
Belt scale consists of three independent sets of the scale aircrafts and a based on 32-bit microprocessor-controlled 6000 weighing instrument,In the process of material operation,realize automatic online calibration,online comparison,online zero,make the reliability,stability,weighing control accuracy of the operation of belt scale greatly improved,and solve the problem for many years that belt scale is not easy online real calibration.

3、 the weighing signal digitization
Since the weighing sensor signal is only 0 ~ 30mV,is not conducive to long-distance transmission,and is also susceptible to interference.In order to enhance the anti-interference ability and adapt the requirements of long-distance transmission,it usually uses a digital converter.The digital converter can change the signal of the sensor,and greatly improve the anti-interference ability.

4、intelligent weighing instrument
With the development of electronic technology,the structure of the instrument is more and more precise,the operation is more and more intelligent.The applications of the new speed sensor and weighing sensor with high accuracy and high reliability.