Load cell interface..need help

Discussion in 'General Electronics Chat' started by gotumal, Mar 26, 2008.

  1. gotumal

    Thread Starter Active Member

    Mar 24, 2008
    99
    0
    Hi,
    I have a load cell which is interfaced with instrumentation amplifier in the differential mode. I want to have "sensor open" indication. I got a clue of connecting very high resistance (>1M) as a pull up and pull down to non-inverting and inverting terminals respectively. But didn't work.

    Could anybody give some idea?

    P.S. I am expecting IA to go in to saturation.
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    As long as the inputs are common mode, then there won't be any amplification. You might be able to set up a resistive path to a voltage at just one input, but be careful it doesn't mess with the load cell response.
     
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