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3-10
IM CA700-01EN
Tolerance for Pass/Fail Judgment
Set the tolerance for making pass/fail judgments on calibration results. The tolerance is set in
reference to the 0% and 100% values described above.
Tolerance = ±((100% value of the measurement function – 0% value of the measurement function)×
tolerance setting/100)
For example, when the calibration target output is 4 mA to 20 mA and this range is assigned to 0 to
100%, if the tolerance range is set to 0.02%, the tolerance is given by
±(20 mA – 4 mA)×0.02/100 = ±0.0032 mA.
Number of Calibration Points (Number Of Points)
Set the number of measurement points between 0% to 100%.
The range is 1 to 10. If you specify 1, the calibration is performed at 0% if the calibration direction
(Direction) is set to Up or Up/Down and 100% if set to Down. If you specify a number between 2 and
10, the calibration is performed for the number of specified points. This includes calibration at 0% and
100%.
The calibration points are at equally divided points between 0% and 100%. For example, if the number
of calibration points is set to 5, the calibration points are 0%, 25%, 50%, 75%, and 100%.
Calibration Direction (Direction)
Set whether to start calibrating from 0% (Up), from 100% (Down), or from 0% to 100% back down to
0% (Up/Down).
Up:
0% to 100%
Down:
100% to 0%
Up/Down:
0% to 100% to 0%
If the calibration direction is Up/Down, the number of calibration points is given by
Number of calibration points = (Number Of Points setting)x2 – 1.
For example, if the number of calibration points is set to 5, the calibration points are 0%, 25%, 50%,
75%, 100%, 75%, 50%, 25%, and 0% (total of 9 points).
3.3 Setting the Device Information and the Calibration Conditions of the Pressure Transmitter