Blog - Shanghai Chenzhu Instrument CO., LTD.

Differences and Selection of Power SPDs under Different Power Supply Systems Jul 28 , 2025 Due to the different electricity demands in various scenarios, Power SPDs have given rise to various power systems. In addition to single-phase systems, there are TT systems, TN-C systems, TN-S system...

What Is an Isolator Barrier? FAQ Jul 25 , 2025 Isolator Barrier is mainly composed of a loop energy limiting unit, a signal and power isolation unit, and a signal processing unit. It not only has the function of energy limiting but also has isolat...

Analysis of the Application of Isolator Barriers in the Petrochemical Industry Jul 22 , 2025 Isolator Barrier is widely used in the industrial sites of petrochemical industry. This is because there is a possibility of leakage and explosion of mixed substances during the production process in ...

Application of Signal Isolators in Water Treatment Projects Jul 19 , 2025 In recent years, the increasingly prominent issue of water resource pollution has had a serious impact on people’s normal production and domestic water use, even directly threatening people's hea...

What Is Analog Input Barrier? Jul 16 , 2025 The isolated safety barrier for analog input, referred to as the Analog Input Barrier, is a safety device designed specifically for connecting 2-wire, 3-wire, or 4-wire transmitters in hazardous areas...

How to Use Safety Relays According to Standards IEC62061 and ISO13849 Jul 13 , 2025 Both IEC62061 and ISO13849 in the machinery industry are function safety assessment standards specifically for the machinery industry. These are the standards used for safety relays. Why are there two...

Is the Role of the Power SPD Significant? Jul 10 , 2025 Power SPD mainly functions to protect circuits and equipment from damage caused by overvoltage, overcurrent, power surges, and other sudden electrical events. It can limit the spread of overvoltage an...

Wiring Method of DC Power Surge Protector, Only Five Simple Steps Needed! Jul 07 , 2025 DC Power Surge Protector is a device used to protect DC circuit equipment from lightning strikes and surges. When the circuit is subjected to sudden voltage such as a surge or lightning strike, DC Pow...

Key Points and Precautions for Selecting Safety Relays Jul 04 , 2025 Safety Relays come in many models. Are you feeling overwhelmed about how to choose the right one?Key Points for Choosing Safety RelaysCoil VoltageCommonly/default DC24V. When it comes to safety relays...

A Simple Understanding of the Types and Principles of Safety Relays Jul 01 , 2025 Safety Relay is a specialized relay that has obtained corresponding safety certification under the safety standard system. In the petrochemical industry, it is a relay that meets the IEC 61508 standar...