Hello to all,
I have one application where I created a simple control loop which works very well. Now, I want to increase the availability in the following way. I already have two transmitters that measure the same process variable. One transmitter is used for contrl loop other is used for some signalization purpose. I have only one available analog input for control loop in one microcontroller.
Now I wonder if there is some kind of device that behaves like redundant source of mA so I can use signals from both transmitters to increase availability of the control loop in case one transmitter fails.
What would you suggest? I have already two mA signals but one analog input. It would be ideal if this device takes two current signals and provide only one on its output. In case one signals goes out of the range, it continues to forward the other correct mA signal to the controller. It's something like 1 out of 2 logic in HW.
Thank you!
I have one application where I created a simple control loop which works very well. Now, I want to increase the availability in the following way. I already have two transmitters that measure the same process variable. One transmitter is used for contrl loop other is used for some signalization purpose. I have only one available analog input for control loop in one microcontroller.
Now I wonder if there is some kind of device that behaves like redundant source of mA so I can use signals from both transmitters to increase availability of the control loop in case one transmitter fails.
What would you suggest? I have already two mA signals but one analog input. It would be ideal if this device takes two current signals and provide only one on its output. In case one signals goes out of the range, it continues to forward the other correct mA signal to the controller. It's something like 1 out of 2 logic in HW.
Thank you!