Two-wire transmitters are used more frequently in the industrial automation field. Like other industrial field devices, two-wire transmitters also suffer from interference and interference. According to the dcs analog board interface mode, different isolation distributors are selected. In principle, it is required to provide isolated power to the transmitter, ensure that each transmitter has an independent power supply, and can transmit the transmitter signal to the DCS. .
The plc analog board interface is a two-wire loop power supply mode, and it needs to isolate the signal. How to choose the product?
The two-wire loop power supply mode is a common analog board interface. A product suitable for this interface is called a two-wire loop isolation series. The isolation device inside the isolation transmitter adopts a transformer mode, which transmits the signal on the one hand, and transmits the power of the power supply to the input portion on the other hand, so that various circuits of the input portion can work normally. For example, distribution products such as ph2217.
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