Abstract： ASME PTC 2:2001 pdf download.DEFINITIONS AND VALUES. 2.4 INTRINSIC ACCURACY The intrinsic or inherent accuracy iii a measurenient system depends upon for materials, fbi construction, and (c) physical condition at time While the inherent acc...

ASME PTC 2:2001 pdf download.DEFINITIONS AND VALUES.

2.4 INTRINSIC ACCURACY

The intrinsic or inherent accuracy iii a measurenient system depends upon for materials, fbi construction, and

(c) physical condition at time

While the inherent accuracy 01 the first two items can be estimated from published data concerning an individual measuring system

component, the actual accuracy at the time of use must be determined by calibration. For this reason, till significant and jximary measuring system components must be calibrated or checked before and alter PTC tests to establish the effect of their physical

condition on inherent accuracy. unless there is no cause for their calibration to change.

2.3 IN SITU CONDITIONS

The accuracy of a measurement system as used depends upon its ability to

(a) sense the variable to be measured,

(b) transmit energy change.

(c) apply or transduce energy.

(d) display data.

The last two items are essentially independent of use unless environmental conditions such as vibration, temperature, humidity,

etc., are of such magnitude as to prevent normal operation. If care is taken to ensure proper environmental conditions, then the

communication function of accuracy is simply the intrinsic accuracy of the components.

Recommended：