??? 06/06/10 21:06 Read: times |
#176455 - incorrect? Responding to: ???'s previous message |
Michael,
just so we all use the same terminology the 4-20 receiver output a voltage and measure the current consumed the 4-20 sensor varies the amount of current it passes. I believe you are thinking from the wrong end I do not think so. Raghu's description is not exctly crystal clear, but why would you connect anything to an USBport but a receiver. Raghu: please provide datasheet links to the two devices you are using and state which one will have the USB plug. On 4-20mA loop devices it may very well not be correct to show minimum reading on an open and maximum reading on a loop short. There is plenty of opportunity for the 4-20 respondent device to detect < 4mA and report an open condition and > 20mA and show a short or overrange error condition. Maybe I was a bit old fashioned there, what I described was 'voltmeter as output from the receiver' Erik |