07-12-2022,
Introduction
Signal isolator is used to adjust and isolate various signals of field instruments and convert them into standard signals acceptable to computers, DCS, PLC, etc., or special signals designated by users. Isolators are mainly used to electrically isolate telecontrol equipment and operating equipment. They play the role of electrical isolation, protect the next control loop, and also play the role of signal transmission and anti-interference.
Working principle
The principle of the signal isolator is to modulate and convert the signal of the transmitter or instrument through semiconductor devices, and then realize isolation conversion through optical or magnetic sensing devices, and then demodulate and convert back to the signal before isolation. At the same time, the isolated signal and power supply are isolated to ensure the absolute independence between the converted signal, power supply and ground, especially suitable for use with equipment and instruments requiring electrical isolation.
Necessity
There are different automatic instruments, detection equipment, etc. in the industrial field, which constitute large and small detection and control systems, and they need to transmit various signals. In the production process, both the control system and the monitoring system may face interference, short circuit, overvoltage, unknown pulse, signal mismatch, mutual interference between signals and other conditions in a complex environment, which will lead to system instability, misoperation, or even failure to work.
Therefore, it can protect the lower level control circuit, weaken the impact of environmental noise, restrain the grounding or equipment interference, and at the same time, it can limit the current and voltage. The isolator that protects the input and output of the control system and the communication interface becomes an indispensable part of the control system.
Superiority
The signal isolation method used in each process loop can be realized by using DCS or PLC or other isolation cards, or transmitters with isolation on site (some equipment can do this), or by using signal isolators. In comparison, it has the following advantages:
鈼?In most cases, signal isolator+non isolation card is cheaper than isolation card.
鈼?It is superior to the isolation card in isolation capability, anti electromagnetic interference and other aspects.
鈼?It is flexible in application, and has the function of model conversion and signal distribution, making it more convenient to use.
鈼?Generally, there are single channel, dual channel, one in two out and other channel forms. The channels are completely independent of each other, which makes the configuration and daily maintenance of the system more convenient.
Effect
The signal will encounter various interferences in the transmission process. In order to ensure the stability of the signal, signal isolator will be used to isolate the interference and avoid signal distortion. It is widely used in major projects in oil field, petrochemical, manufacturing, electric power, metallurgy and other industries.
1. Eliminate the influence of grounding loop
Due to the potential difference between the signal reference points between the instrument and equipment, a grounding loop will be formed between them, which will often cause interference and distortion in the signal transmission process. To ensure the stable and reliable operation of the system, the "grounding loop" problem must be solved in the process of system signal processing.
2. Eliminate high-frequency electromagnetic interference
To realize monitoring and control in the industrial production process, various automatic instruments, control systems and actuators are required. After the signal transmission between them constitutes a system, it is often found that mutual interference between instruments and equipment causes system instability or even misoperation. Eliminating electromagnetic interference can ensure signal stability.
3. Resolve the signal mismatch problem before the device
Two devices that need channel signal connection can not be connected normally due to different signal output types and received signals. At this time, isolators can be used to achieve signal conversion.
4. One channel signal is distributed to multiple channels
On some occasions, we need to transmit signals to multiple systems, such as control system and display system. At this time, we can choose the function of one in and many out of the isolator to achieve this, which can not only ensure the signal distribution on the site, but also achieve signal isolation, which is simple and convenient without losing accuracy.
Certificate
We implement TQM (Total Quality System) and SOP (Standard Operation Procedure) with ISO 9001:2017 certification, which assures a strong commitment to quality standards and customer satisfaction.
Shipping
We will send the goods to you by DHL, FEDEX, UPS, EMS, AIR, etc. Usually 7-15 working days after receiving your 100% payment. For bulk orders: 15-35 working days after receiving the deposit.
Our service
鈼廠ervice standards: We are committed to providing a high-quality and responsive service to all clients.
鈼廜EM: Available for waveguide series.
鈼廠table quality: Implement the whole process of quality control, meticulous and strict inspection!
鈼廟easonable price: Internal cost control, reducing expenses, benefiting customers!
鈼廝rofessional selection: More than 5 years of professional engineer selection, to provide you with alternative models of each factory, system solutions.
鈼廎ast delivery: Adequate stocking, shortened delivery time!
鈼廌oor-to-door service: We usually send the parcel by DHL, EMS, TNT, etc. The tracking number will be sent to you after delivery. It usually takes 3~5working days to reach from our side to your side, which is very convenient for your business.Customized RF Components
website:http://www.efine-com.com/rf-components/
Signal isolator is used to adjust and isolate various signals of field instruments and convert them into standard signals acceptable to computers, DCS, PLC, etc., or special signals designated by users. Isolators are mainly used to electrically isolate telecontrol equipment and operating equipment. They play the role of electrical isolation, protect the next control loop, and also play the role of signal transmission and anti-interference.
Working principle
The principle of the signal isolator is to modulate and convert the signal of the transmitter or instrument through semiconductor devices, and then realize isolation conversion through optical or magnetic sensing devices, and then demodulate and convert back to the signal before isolation. At the same time, the isolated signal and power supply are isolated to ensure the absolute independence between the converted signal, power supply and ground, especially suitable for use with equipment and instruments requiring electrical isolation.
Necessity
There are different automatic instruments, detection equipment, etc. in the industrial field, which constitute large and small detection and control systems, and they need to transmit various signals. In the production process, both the control system and the monitoring system may face interference, short circuit, overvoltage, unknown pulse, signal mismatch, mutual interference between signals and other conditions in a complex environment, which will lead to system instability, misoperation, or even failure to work.
Therefore, it can protect the lower level control circuit, weaken the impact of environmental noise, restrain the grounding or equipment interference, and at the same time, it can limit the current and voltage. The isolator that protects the input and output of the control system and the communication interface becomes an indispensable part of the control system.
Superiority
The signal isolation method used in each process loop can be realized by using DCS or PLC or other isolation cards, or transmitters with isolation on site (some equipment can do this), or by using signal isolators. In comparison, it has the following advantages:
鈼?In most cases, signal isolator+non isolation card is cheaper than isolation card.
鈼?It is superior to the isolation card in isolation capability, anti electromagnetic interference and other aspects.
鈼?It is flexible in application, and has the function of model conversion and signal distribution, making it more convenient to use.
鈼?Generally, there are single channel, dual channel, one in two out and other channel forms. The channels are completely independent of each other, which makes the configuration and daily maintenance of the system more convenient.
Effect
The signal will encounter various interferences in the transmission process. In order to ensure the stability of the signal, signal isolator will be used to isolate the interference and avoid signal distortion. It is widely used in major projects in oil field, petrochemical, manufacturing, electric power, metallurgy and other industries.
1. Eliminate the influence of grounding loop
Due to the potential difference between the signal reference points between the instrument and equipment, a grounding loop will be formed between them, which will often cause interference and distortion in the signal transmission process. To ensure the stable and reliable operation of the system, the "grounding loop" problem must be solved in the process of system signal processing.
2. Eliminate high-frequency electromagnetic interference
To realize monitoring and control in the industrial production process, various automatic instruments, control systems and actuators are required. After the signal transmission between them constitutes a system, it is often found that mutual interference between instruments and equipment causes system instability or even misoperation. Eliminating electromagnetic interference can ensure signal stability.
3. Resolve the signal mismatch problem before the device
Two devices that need channel signal connection can not be connected normally due to different signal output types and received signals. At this time, isolators can be used to achieve signal conversion.
4. One channel signal is distributed to multiple channels
On some occasions, we need to transmit signals to multiple systems, such as control system and display system. At this time, we can choose the function of one in and many out of the isolator to achieve this, which can not only ensure the signal distribution on the site, but also achieve signal isolation, which is simple and convenient without losing accuracy.
Certificate
We implement TQM (Total Quality System) and SOP (Standard Operation Procedure) with ISO 9001:2017 certification, which assures a strong commitment to quality standards and customer satisfaction.
Shipping
We will send the goods to you by DHL, FEDEX, UPS, EMS, AIR, etc. Usually 7-15 working days after receiving your 100% payment. For bulk orders: 15-35 working days after receiving the deposit.
Our service
鈼廠ervice standards: We are committed to providing a high-quality and responsive service to all clients.
鈼廜EM: Available for waveguide series.
鈼廠table quality: Implement the whole process of quality control, meticulous and strict inspection!
鈼廟easonable price: Internal cost control, reducing expenses, benefiting customers!
鈼廝rofessional selection: More than 5 years of professional engineer selection, to provide you with alternative models of each factory, system solutions.
鈼廎ast delivery: Adequate stocking, shortened delivery time!
鈼廌oor-to-door service: We usually send the parcel by DHL, EMS, TNT, etc. The tracking number will be sent to you after delivery. It usually takes 3~5working days to reach from our side to your side, which is very convenient for your business.Customized RF Components
website:http://www.efine-com.com/rf-components/