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23 paź 2024 · We mentioned that 4-20mA transducers can be loop-powered. Figure 2 shows a simplified diagram of how this can work. A voltage to current converter converts the sensor output to a 0 to 16mA current. In parallel a fixed 4mA current source provides the power supply via a shunt regulator.
I'd like to run some tests by using 4-20mA sensors outputs, by somehow connecting them to my PC (and eventually run some analysis on the collected data). I'm looking for a converter (that can perhaps be plugged in via USB), or some other interface method to my PC / Laptop.
19 lip 2017 · The most common standard is the 4-mA-to-20-mA current loop, and here we’ll take a look at how it came to be, how it works, and how you can leverage this basic process control...
1 lis 2019 · In this article, Derek helps you gain deeper understanding of 4-20 mA current loop devices and process control systems. He looks at some history, explains why things are the way they are, looks at simple example components of a process control system (sensor, transmitter, receiver) and works through a practical example with working code.
The 4-20 mA current loop has become the standard for signal transmission and electronic control in most analog control systems. A 4-20mA current loop circuit is shown in Figure 1.
Robust Loop Powered Configurable Transmitter Circuit with 4 mA-to-20 mA Output. The design is optimized for precision, low noise and low power industrial process control applications. The circuit can accept 0 V to 5V or 0 V to 10 V input range as a transmitter.
27 maj 2022 · 4-20 mA receiver design is available as printed circuit boards or integrated circuits. Regardless of the design type, the receiver circuit should offer high reliability and high conversion accuracy at low design and manufacturing costs.
