Transducer

device that converts one type

of energy to another

Accuracy

Closeness of the true measured

value to an actual value

Precision

Repeatability,

Cluster

Sensivity

smallest quantity that can

be measured by a system

Resolution

Minimum distance or value

between two readings

where they are still seen

as two values

LabVIEW

Labpratory Virtual Instrument (VI)

Engineering Workbench

data analysis, data acquisition,

data presentation, datastorage,

signal generation, signal processing,

filtering, arithmetic funcGons

High Accuracy, low Precision 

High Precision, low accuracy

Sensitivity

a measure of the smallest

signal the instrument can measure.

Resolution

the smallest amount of

input signal change that the instrument

can detect reliably.

This term is determined by

the instrument noise

USB 6009

14 bit 48 kS/s

Types of Errors

--Systematic (bias) β

--Random (precision) ε

β

Systematic error (bias)

ε

Random error (precision)

δ

error for single measurement xi

When was first SG

Lord kelvin in 1856 resistance goes up

w/ applied strain

1930- fist sg made