Part 4 of this series discussed the issues and requirements involved in the design of a 2-wire sensor transmitter that accepts inputs from an externally powered sensor/source. In this installment, I’ll expand on the concepts presented in that post and…
The previous three parts of this blog series focused on 2-wire 4-20mA sensor transmitter designs composed completely of analog components. While analog signal conditioning is practical for linear sensors, many sensors have nonlinear outputs that can only…
In my previous post, I explained how to design 2-wire, or loop-powered, analog outputs for industrial automation. In this post, with the design and operation of the transmitter in mind, I will talk about how to design circuits to protect these systems…
In the previous posts in the Industrial DACs series we’ve been looking at how to build and protect 3-wire industrial analog outputs. Today, we will change gears and look at 2-wire analog outputs.
Figure 1: Simplified drawing of typical 2-wire …
Part 2 of this blog series derived the basic transfer function for a typical 2-wire transmitter, commonly used in industrial control and automation, and explained the currents flowing inside it. It also explained that connecting the transmitter return…
