Overview of new functions of valve port scale instrument

Valve port scale instrument belt scale control instrument is a high-performance control instrument specially designed for belt scales. It adopts anti-interference measures and a number of research results of single-chip microcomputer, and has the characteristics of powerful function, small size, high reliability and strong compliance. It is suitable for the control of belt scales of various modes and ranges, and is used for the control of dynamic scales in various modes such as twisted scales, disc scales and rotor scales. The instrument is suitable for the following control systems:

1. High reliability. Software and hardware design. Each design must go through 4 steps of preliminary review, principle review, electromagnetic compatibility, process standard review, etc. A total of more than 200 items are reviewed; product testing. The test content includes functional testing, embedding System inspection, electromagnetic compatibility test, environmental experiment, etc. The test process includes self-test and quality department verification, and the test method includes black box test and white box test.

2.Valve port scale instrumentHigh anti-interference. The small batches of the control instruments of the belt scale have all passed the electromagnetic compatibility level III test, and the local indicators are better than the level III specification.

3. Communication function, in accordance with standard MODBUS protocol, fast communication speed and high reliability. (optional function)

4. Using LCD display. 3. The input and output interface adopts a variety of hardware anti-interference technology.

5. The instrument can be operated through the keyboard, external signal (port) and the host computer.

6.2 rows of LED digital tube display, more convenient to read;

7. A standard RS232\/RS485 serial interface, which can be used for stand-alone or networked data communication, print output;

8. The valve port scale instrument can choose 4-20mA\/0-10V analog output interface board;

9. Remotely control instrument calibration, reset, tare and other functions through PLC, host computer and other methods;

10. The minimum calibration load weight can reach 20% of the full scale, which minimizes the difficulty of debugging and work intensity while ensuring accuracy;

11. Intelligent PID adjustment. And the control cycle can be set arbitrarily.

12. The valve port scale instrument can be connected with the host computer, PLC or DCS through the instrument interface and communication interface.

13. There are two control methods: flow control and quantitative control.

14. The valve port scale instrument has two working forms: speed regulation and constant speed.

15. With cumulative pulse output, the width and equivalent of the pulse (the amount of material represented by each pulse) can be set by parameters.

16. Key parameter setting password maintenance to avoid misuse by non-professionals.

17. Quick parameter backup and recovery function. It can back up all the parameters inside the instrument, and restore it when the instrument parameters have problems.