Other Parts Discussed in Thread: XTR116
I have a case where I have two full bridge sensors, and the EXC- legs are tied together. The voltage outputs of the 4-20mA readouts are commonly isolated for UL safety reasons, so the negative…
In what applications are 4-20mA transmitters used? What types of end equipment are 4-20mA transmitters a part of?
How do I choose a 4-20mA transmitter? What is the difference between a 2, 3, or 4-wire transmitter and when should I use each?
What is a 4-wire 4-20mA current transmitter?
What is a 2-wire 4-20mA current transmitter? How do I use one?
What is a 4-20mA current transmitter?
The minimum output current of my 2-wire 4-20mA transmitter is greater than 4mA.
Why is that? How can I lower it?
My MCU is MSP430F4152 current consumption 0.5mA use PWM to Iin RC to Iin use 12K resistance ,But i test IO pin current is 4.12mA i change PWM duty cycle but 4.12 is minimum, i do…
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…
In part 5 of this blog series, I discussed the construction of an input-isolated 2-wire sensor transmitter. Input-isolated 2-wire transmitters require isolating the sensor power and data signals from the 2-wire loop supply and 2-wire loop return (RTN…
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…
Part 1 of this blog series provided an overview of the operation and uses of 2-wire 4-20 mA field sensor transmitters and provided a basic example system. The post also introduced the current transmitter compliance voltage, which when violated prevents…
Part 1:
2-wire 4-20 mA sensor transmitters are very common in industrial control and automation. They are popular because they allow a remote process to be monitored with only two analog signal wires. The two wires carry both the power for the sensor…
hi.ti
i have one question about pga309 evm.how to set up PGA309 EVM software to generate 0.5-4.5V voltage with real sensor?
