Instrumentation Exam 2

measurement range

minimum and maximum operation limits that the sensor is expected to measure accurately

sensitivity

ratio of output change for a given input change

accuracy

difference between the true value and the actual value measured by the sensor

precision

degree of measurement reproducibility under the same conditions

resolution

when the input is increased from some arbitrary nonzero value, the output of a sensor will not change until a certain input increment is exceeded

offset

the output value when input value is zero

reproducibility

how close measurements are when the same input is repeatedly exerted into the same sensor under the same conditions

tolerance

the allowable deviation or variation in a sensor’s specified parameter from its nominal value

response time

the time it takes a sensor to reach a percent of its final steady-state value when the input of the sensor is changed

drift

the change in sensor reading when the input keeps constant

hysteresis

input-output characteristic follows a different nonlinear trend, depending on whether the input increases or decreases