1、 The function and working principle of a flow signal isolator:

The main function of the communication signal isolator is to protect the lower level control circuit, weaken the influence of environmental noise on the test circuit, suppress the interference of common grounding, frequency converter, solenoid valve and unknown pulse on the equipment, and at the same time, it has the function of limiting voltage and rated current for lower level equipment. It is a faithful protection for transmitters, instruments, frequency converters, solenoid valve PLC/DCS input and output and communication interfaces. ‌

The working principle of communication signal isolators mainly involves signal isolation and conversion. Firstly, the signal of the transmitter or instrument is modulated and transformed through semiconductor devices, then isolated and transformed through optical or magnetic sensing devices, and finally demodulated and transformed back to the original signal before isolation. At the same time, the power supply of the isolated signal is isolated to ensure absolute independence between the transformed signal, power supply, and ground, thereby achieving effective isolation and protection of the signal

2、 Application of LYJ series AC signal isolator:

AC signal isolator, also known as signal isolator, is a key component in industrial control systems. It adopts the principle of linear optocoupler isolation to convert input signals into outputs, achieving mutual isolation between input, output, and working power supply. This isolation technology is particularly suitable for use with equipment and instruments that require electrical isolation, and is an important component of industrial control systems. His application scope is wide, including smelting, water treatment, chemical industry, thermal power, industrial automation and other industries, and has been widely applied and achieved significant results. By using signal isolators, it is possible to effectively overcome frequency converter noise and various high and low frequency pulsation interferences, and improve the overall performance and safety of industrial control systems

3、 Technical parameters of LYJ series AC signal isolators:

1. Output load:<5500 when 4-20mA, voltage type ≥ 250K Ω

2. Basic error: ± 0.2% FS

3. Power supply: 24VDC ± 10%

4. Temperature drift: ≤ 0.01% FS/℃ 5. Insulation resistance: ≥ 100M0/500VDC between power input output

6. Insulation strength: 1000VAC/min

7. Power consumption: One in one out<1.4W, one in two out<2W

8. Working environment: ambient temperature of 0-50 ℃; Relative humidity ≤ 85% RH (avoid strong corrosive gases)

9. Installation method: Rear mounted card (DIN35 rail)

4、 Quality Assurance:

Thank you for your attention and use of Lingyu Technology's products. Our company promises to provide a 24 month warranty service for this product. If any quality problems occur during the warranty period, the product will be repaired or replaced free of charge.