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Accuracy of Transducer

  1. Jul 16, 2015 #1
    Hello everyone;

    My transducer manufacturer says that the accuracy of the pressure measurement device is 0.5% in full scale of PSI. However, I don't use Psi but Pascal. Is it the same value for pascal as well? When I make measurement I will get 0.5% error in pascal too?

    Thank you.
  2. jcsd
  3. Jul 16, 2015 #2


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    Science Advisor

    Yes. PSI and Pa are both pressure units so the percentage applies to both. The 0.5% is probably the standard deviation of the gauge.
    But a pressure gauge needs two accuracy specs. One is the zero error, the other is the slope. If the pressure is zero then 0.5% of zero is meaningless and so must be specified in absolute units of psi or Pa or as a percentage of full scale deflection.
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