Accuracy of Transducer

1. Jul 16, 2015

Merttt

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. Jul 16, 2015

Baluncore

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.