Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. grimmer

    Variance in 4-20 mA measurement

    Is this a loop signal isolator/converter? It sounds like you are converting a 4-20mA signal to a 1-5V signal. If that's the case, has it been initially calibrated for this application(if it's new) or has it been calibrated recently to compensate for 'drift'(if it's old)? As crowbar1...
  2. grimmer

    4-20mA sensor measured at two locations

    maddog, I'm kicking myself for not thinking of this sooner..... You didn't mention anything about a budget, but if it's not too tight, consider this option: How about a single loop, using the one sensor, either powered from the measuring device or from a separate power supply, and feed the...
  3. grimmer

    4-20mA sensor measured at two locations

    maddog, I don't think I've been much help here - I just tossed in my two cents worth. I'm not familiar with the type of input you're using. I have seen cases where only part of the range of a 4-20mA input is actually utilized, but what you're suggesting is actually going to be out of range for...
  4. grimmer

    4-20mA sensor measured at two locations

    Maddog, This response is probably way too late, but here goes anyway. The only applications I've seen with 4-20mA loops terminate on a 250 ohm resistor at an input. You can actually measure this resistance at an input with an ohmmeter. Typically, you can have up to three 'devices'(read...
  5. grimmer

    Choosing a PLC Brand...

    cfordyce, I have dealt with systems integrators who have used the Koyo PLC's with success, and I'm still watching one particularly trying installation years later(replaced an existing PLC) - so far so good! They tell me support is just a phone call away, and they are prompt and knowledgable...

Part and Inventory Search

Back
Top