Pressure transducer accuracy is expressed within a ± percent of Full-Scale Output (FSO), which represents the variation in the output signal as the transducer performs over its calibrated range [from minimum to maximum pressure at a specified temperature]. Included in this value are the mathematically combined effects of linearity, hysteresis, and repeatability errors.
Resolution refers to the smallest change in pressure that can be detected in the transducer's output. It is commonly expressed within a ± percent of FSO. Resolution is typically not consistent throughout a transducer's range.
The term "zero unbalance" refers to the residual output of an excited transducer that has no pressure applied.