Answer: Sensors are more accurate.
Explanation:
We will begin our analysis of 'Accuracy' by first setting out the factors that
must be taken into account.
Fundamentally, 'Accuracy' simply describes how closely the indicated value
represents the actual measurand being monitored, whilst taking into account
all possible sources of error that are relevant to the application.
It is our experience that accuracy is very often confused with linearity, which
is of course only one source of potential error, albeit quite a significant one.
In fact in the practical world the quoted accuracy of a measurement should
include at least some and possibly all of the following sources of error:
Linearity
Repeatability
Resolution
Hysteresis
Zero temperature coefficient
Gain temperature coefficient
Long term stability
Calibration equipment errors and the calibration standard
Clearly then, accuracy can be closely defined for a given set of operating
conditions but it is vitally important to take into account all contributing
factors if the very best results are required.
Furthermore, it must be remembered that not all manufacturers will define
these parameters in exactly the same way, so choosing the best device for
your job can become quite a challenge.
