Pressure Scale/Offset Calibration Utility

For a description of all Scale/Offset Calibration Utilities, see Using the Scale/Offset Calibration Utilities. This utility is available only on single-ended auxiliary axes. To use the Pressure Scale/Offset Calibration Utility:

  1. Choose two axis pressures to use for this calculation. These pressures should be easily measured, easily maintained, and significantly far apart to minimize errors.

  2. Place the cursor in a field under the axis you wish to calibrate.

  3. On the Tools menu, click Scale/Offset Calibration.

  4. Hold the transducer at the first pressure.

  5. Measure the actual pressure at this first pressure in the pressure units that you intend to use (for example, millibars, psi).

  6. Under First pressure, in the Actual pressure box, type the pressure measured to the first point in pressure units.

  7. Under First pressure, click Use Current, which copies the Counts on this axis being calibrated to the Counts box under First pressure. You can also manually type a value in this box, but it is easiest to use the Use Current button.

  8. Ramp the pressure to the second value. You may want to move the Scale/Offset Calibration dialog box out of the way so that you can use the main RMCWin window.

  9. Measure the physical pressure at the second value in the pressure units that you intend to use.

  10. Under Second pressure, in the Actual pressure box, type the pressure measured to the second point in pressure units.

  11. Under Second pressure, click Use Current.

  12. Click Apply, which sets the Scale, Offset, and the Prescale Divisor bits of the Configuration word.

  13. Click Done.

  14. Issue a 'P' command for the axis to have the new parameters take affect.

 


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