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Documenting Process Calibrator
Calibrating a Process Instrument
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13. Press the Done softkey to accept the calibration
parameters. The display changes as follows:
14. You now have the choice of starting an
automatic test or stepping through the test
points manually. Press the Auto Test softkey to
have the calibrator run through the tests
automatically. (Abort gets you out of the
calibration procedure.) The tests begin at the
zero point, sourcing the correct temperature (a
voltage) and measuring the corresponding
current from the transmitter. As soon as a
measurement has settled and has been
captured, the calibrator moves on to the next
step. Because the calibrator waits for the
measurement to stop changing, the Auto Test
works correctly for instruments with built-in
damping.The error of the expected measured