Signal Isolator: Expert in Lightning Protection, Explosion Protection, and Anti-Interference

Signal Isolators are widely used in the chemical industry. The production processes in the chemical industry often involve the handling and transformation of various hazardous substances, so safety and precision are very important considerations. Signal Isolators can provide electrical signal isolation and conversion, protecting operators and equipment from harmful substances and electrical faults.

The Key Applications of Signal Isolators in Chemical Production

In chemical production processes, signal isolators can be used to monitor and control parameters such as temperature, pressure, and flow. They transmit measurement signals from sensors to the control system while ensuring that the signals are completely isolated from the main power system, preventing any potential electrical interference and hazards.

The Role of Signal Isolators in Multi-Area Signal Transmission

Signal isolators can also be used for signal transmission between different areas in chemical plants. For example, in a chemical plant, there are many distributed control systems that need to communicate with each other, and signal isolators can transmit signals from one area to another, ensuring data accuracy and safety.

Detailed Explanation of the Working Principle of Signal Isolators

First, the signal from a transmitter or instrument is modulated and transformed through semiconductor components, then isolated and converted through a photoelectric coupler, demodulated and transformed back to the original signal before isolation, and finally, the power supply for the isolated signal is treated for isolation. This ensures the absolute independence of the transformed signal, power supply, and ground.

Functions and Advantages of Signal Isolators

Signal isolators play an important role in the chemical industry; they provide safe and reliable signal isolation and conversion functions, ensuring the stability and safety of the chemical production process. Their main functions include:

Signal Isolation 

Signal isolators isolate different input signals through internal isolation circuits, avoiding interference with these signals. Signal isolation can solve issues like ground potential difference interference, surge interference, and more, ensuring the normal operation of the system.

Signal Amplification

Some equipment outputs weak signals, in which case a signal isolator is needed to amplify the signal to ensure stable output within a certain range.

Signal Conversion

Sometimes input signals need to be transformed into other forms of output signals. At this time, signal isolators can achieve this through internal conversion technology, such as converting current signals to voltage signals.

Protection Function

Adding signal isolators can protect important upstream control devices such as PLCs, industrial computers, acquisition cards, instruments, etc. The isolation function of the isolator can protect other valuable devices from damage.

Signal isolators in industrial production can increase instrument load capacity and ensure that instruments connected to the same signal do not interfere with each other, improving electrical safety performance. They collect, amplify, calculate, and perform anti-interference processing on voltage signals, current signals, resistance signals, etc., input to PLC/DCS, and then output isolated voltage signals or current signals, safely transmitting them to secondary instruments or PLC/DCS for use.