Conceptual
Login

Static Characteristics of Measurement Instruments in Industrial Instrumentation

Static characteristics describe how a measuring instrument behaves under steady-state (time-invariant) conditions, as opposed to dynamic characteristics which govern transient response. These characteristics — span, accuracy, linearity, sensitivity, tolerance, static error, repeatability, resolution, bias, drift, hysteresis, dead zone, and input impedance — are formally defined performance attributes published in an instrument's data sheet and used to classify and evaluate measurement instruments in industrial process control. The concept belongs to the field of industrial instrumentation and measurement science, a subdiscipline of process control engineering concerned with converting physical quantities (pressure, temperature, flow, etc.) into standardized signals for monitoring and control.