电子工程专辑

传统设备信号如何升级？一文读懂4-20mA电流回路的秘密

4至20mA回路电流(loop current)是过程工业中仪控工程师熟悉的标准信号。现场的压力、温度以及流量变送器会依据量测的过程参数，输出对应的4至20mA电流信号，以实现远程监控与控制。 工厂中的分布式控制系统(DCS)或可编程逻辑控制器(PLC)通常设置于中央控制室 ...
EDN

4-20mA Current Loop Configurations and FAQ’s

Transmitters are available with either floating outputs (typically used in loop-powered applications) or with single-ended outputs (typically used in locally-powered applications). This application ...
OFweek维科网

如何设计高精度可靠的4-20mA通信？

使用4－20mA模拟量进行通信时，无论是发射端还是接收端的电路设计，相对于数字通信都会比较复杂，那为什么还要使用呢？本文将结合设计案例带你了解4－20mA通信。 1、为什么使用4－20mA通信？ 在远距离、复杂的工业现场应用场合常常伴随有较大的干扰源 ...
OFweek维科网

如何设计高精度、可靠的4-20mA通信？

使用4－20mA模拟量进行通信时，无论是发射端还是接收端的电路设计，相对于数字通信都会比较复杂，那为什么还要使用呢？本文将结合设计案例带你了解4－20mA通信。 在远距离、复杂的工业现场应用场合常常伴随有较大的干扰源，磁场辐射干扰、传导干扰等 ...
EDN

Another silly simple precision 0/20mA to 4/20mA converter

A converter that tapers off a 4 mA input to zero, and adds the input and the tapered off 4mA signal to create a 2-wire 4-20 mA output loop.
WGHP

Avimesa validates Compulab IOT Gateway with dual 4-20mA loop interface

High-End loop sensors provide PLC grade sensors to lower cost IoT site installations. SAN DIEGO, CA, UNITED STATES, May 23, 2023/EINPresswire.com/ -- Avimesa ...
Mena FN

Avimesa Validates Compulab IOT Gateway With Dual 4-20Ma Loop Interface

High-End loop sensors provide PLC grade sensors to lower cost IoT site installations. SAN DIEGO, CA, UNITED STATES, May 23, 2023/einpresswire.com / -- avimesa corporation has been working with ...
Hackaday

The 4-20 MA Current Loop

The I/O capabilities built into most microcontrollers make it easy to measure the analog world. Say you want to build a data logger for temperature. All you need to do is get some kind of sensor that ...