Shanghai Chenzhu Instrument CO., LTD.
Shanghai Chenzhu Instrument CO., LTD.

The Status of Digital Signal Isolators in Industrial Production

Jun 17 , 2025
Table of Content [Hide]

    With the continuous advancement of technology, the market has seen the emergence of many high-performance digital signal isolators. These isolators not only possess the functions of conventional signal isolators but also include CPU control units, featuring field programmability and communication capabilities. In industrial production, digital signal isolators play a crucial role in ensuring the reliability and safety of signal transmission.


    The Basic Functions of Digital Signal Isolators


    In industrial production, various instruments and meters generate and transmit various signals. These signals must be transmitted without distortion to ensure the accuracy and reliability of system debugging. Digital signal isolators effectively remove potential wireless radio frequency and electromagnetic interference during the transmission process by resolving the issue of different ground reference points when devices are interconnected, ensuring signal integrity.


    Applications of Digital Signal Isolators in Interference Prevention


    Ground loop interference


    In industrial production, various instruments are often used to monitor and control the production process. When multiple types of instruments are used, signal transmission can be interfered with. Using digital signal isolators can resolve interference issues in signal transmission through ground loop interference. For example, when some instruments have signals as weak as millivolts and others have signals as high as several thousand or even tens of thousands of volts, the instruments with weak signals experience significant interference. Digital signal isolators effectively resolve this issue by mitigating ground loop interference.


    Natural interference


    Lightning is a common natural phenomenon that can damage building facilities and even pose threats to human safety. Digital signal isolators can effectively avoid losses caused by lightning by isolating and converting input signals, thus protecting equipment from lightning damage.


    Human-caused interference


    With the widespread use of electronic products, electromagnetic pollution has become increasingly serious, posing a threat to human health. Utilizing digital signal isolators can effectively reduce electromagnetic pollution and protect human health. They isolate and convert input signals through optoelectronic or magnetoelectric isolation principles, avoiding electromagnetic interference on equipment and individuals.


    Technical Standards for Choosing Digital Signal Isolators


    Isolation strength


    Isolation strength is one of the important parameters to measure digital signal isolators. It indicates the withstand voltage capability between input and output, input and power, and output and power, measured in volts @1 minute. The higher the value, the stronger the withstand voltage capability and the better the filtering performance. The withstand voltage test applies a 50Hz mains frequency voltage for several minutes to determine the voltage value at which no breakdown occurs between different potential surfaces.


    Accuracy


    Accuracy is the standard for measuring the quality of digital signal isolators. Generally, the industry achieves a range of ±0.2%. High-accuracy signal isolators can ensure signal accuracy during transmission.


    Temperature coefficient


    The temperature coefficient indicates the change in accuracy of the isolator as the ambient temperature changes, usually expressed as a percentage. The smaller the temperature coefficient, the more stable the isolator's performance in different temperature environments.


    Response time


    Response time characterizes the reaction speed of the signal isolator. A fast response time ensures timely signal transmission, meeting the real-time monitoring needs in industrial production.


    Insulation resistance


    Insulation resistance indicates the isolation capability between the internal power supply and the casing. High insulation resistance effectively prevents current leakage and ensures equipment safety.


    Load resistance


    Load resistance reflects the load-bearing capacity of digital signal isolators. High load resistance ensures that the isolator can work stably under high load conditions.


    The Importance of Digital Signal Isolators in Industry


    Digital signal isolators have been widely used in various industries. They not only solve various interference problems in signal transmission but also improve the accuracy and reliability of signal transmission. In the industrial production process, digital signal isolators ensure production safety and efficiency by isolating and converting signals.


    In summary, digital signal isolators play an indispensable role in industrial production. They ensure the integrity and safety of signal transmission by resolving various interference issues, thereby improving production efficiency and equipment reliability. Choosing suitable digital signal isolators can effectively enhance the level of automation and safety in industrial production.

    References
    Products
    We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. By using this site, you agree to our use of cookies. Visit our cookie policy to learn more.
    Reject Accept