Several configurations of paperless recorders

Several configurations of paperless recorders With the rapid development of modern industrial control and new technology fields, new types of display recorders based on industrial microprocessor CPUs have been increasingly applied to industrial production and science. The various departments of the study. After entering the 1990s, various industrial automation instrument manufacturers began to develop and introduce new types of display recorders—pen-less, paperless recorders. The CPU uses the liquid crystal display recorder as the core, completely abandons the traditional mechanical transmission of the recorder, paper and pen, directly converts the recording signal into a digital signal, and sends it to the random memory to save it and put it on the large-screen LCD screen. display. Since the recording signal is converted and stored by an industrial microprocessor CPU, the recording signal can be arbitrarily enlarged and displayed on the display screen in a reduced size, bringing great convenience to the observation of the recorded signal state. If necessary, record curves or data can be sent to a printer or sent to a personal computer for storage and further processing. The instrument input signal is diversified and can be used with thermocouples, thermal resistors, radiation thermometers, or other transmitters that generate DC voltage, DC current, frequency, and so on. Digital display, digital recording, alarm, and control of process parameters such as temperature, pressure, flow rate, level, etc., can be configured or programmed to visually display the current measurement value. The configuration methods are mainly the following:

(1) Time and channel configuration. Used to configure or modify dates, clocks, recording points, and sampling cycles.

(2) Configuration of pages and recording intervals. The input signal mode of each channel, range upper and lower limits, upper and lower limits of alarm, filter time constant, and the setting of square root or not. For flow signals, it can also be used to make square, flow accumulation and flow, temperature and pressure compensation.

(3) Due to the large number of engineering units of the input signal, the appropriate engineering unit can be selected through configuration. If you have a PID control module, you can implement a PID control loop.

(4) Configuration of communication information. Used for microcomputer communication address and communication mode settings.

(5) Display screen selects configuration. Paperless recorders can display nine or more screens. You can select the screen that needs to be displayed most by configuration.

(6) Configuration of alarm information. The upper limit, the upper limit, the lower limit and the lower limit alarm contact settings for each channel.