Term

Definition
comparison of an unknown quantity with a standard assumed to remain constant 


Term

Definition
characterization of a phenomenon or property in terms of a functional relationship between measured quantities and quantities that are accessible for measurement 


Term

Definition
device that converts one form of energy into an electrical signal
Active (create their own energy)and passive energy drawn from measured system <= 1/100 measuring energy 


Term

Definition
how close a measured value is to the real value 


Term

Definition
how closely a measured value clusters around a best estimate of the real value
small std deviation, but can have low accuracy 


Term

Definition
level or amplitude of the smallest change in measured value
relationship between the minimum instrument step size and the full scale output 


Term

Definition
minimum change in input that causes a change in output 


Term

Definition
agreement between measurements taken under identical conditions
1% of Full Scale output 


Term

Definition
agreement between measurements of the same phenomenum 


Term

Definition
difference in output between measurements of increasing and decreasing input 


Term

Definition
deviation of a response curve (or calibration curve) from a straight line, given in + % FSO 


Term

Definition
degree of correspondence between nonlinear input/output relationship and theoretical curve 


Term

Definition


Term

Definition
Power Source > Amplifiers > Filters 


Term
Power Source Characteristics 

Definition
operating mode (const Voltage or Current) line and load regulation spec. ripple on source (Voltage or Current) zero suppression range loading or stability 


Term
Amplifier Characteristics 

Definition
Input electrical characteristics Design type Dynamic Parameters Max input voltage and gain 


Term
AntiAliasing Filter Characteristics 

Definition
Filter type (BEssel, Butterworth, Chebyshev) Pass band or stop band parameters Dynamic Parameters (settling time, overshoot) 


Term
Analog to Digital Converter (ADC) Characteristics 

Definition
Conversion Technique (Digital Ramp, Successive Approximation or Flash) Conversion Rate (points/sec) Full Scale conversion voltage Resolution (n = # of bits, resolution = (Voltage Difference)/2^n) 


Term
Zero Order Hold Circuitry 

Definition
holds signal constant during time the ADC takes to digitize an analog signal or convert digital to continuous 


Term

Definition
switch to connect N different sensor inputs to one data measuring equipment
Characteristics: Switching rate Crosstalk 


Term

Definition
Intrinsic: inherent within the measurement chain (hysteresis, accuracy, offset, noise, etc.)
Application Related: associated with the use of sensors (Spatial, Interaction, Probe, Temperature effects)
Interface: due to interfacing measurement chain components (Cabling, Loading, crosstalk, etc.)
Sampling and Approximation: due to discretization of analog signals (Finite time sampling, improper sampling rate, stabilization error, approximation error) 


Term
Numerical Integration Approximation 

Definition
Reinmann Sum, Trapezoidal, Simpson 


Term
Trapezoidal Rule Error Bound 

Definition


Term
Midpoint Rule Error Bound 

Definition


Term
Simpson's Rule Error Bound 

Definition


Term
Measurement Error Components 

Definition
Bias Error (related to the mean value or accuracy)
Random Error (related to the variation in data due to precision and resolution) 


Term
Measurement Probability and standard deviation 

Definition
within 1 std deviation = 68.3% within 2 std deviations = 95.4% within 3 std deviations = 99.7% 

