Calculate Loop Errors - Intergraph Smart Instrumentation - Help

After you set tags for loop error calculation, use this procedure to do the following:

• Select tags from a given loop for loop error calculation

• Select a loop error calculation method

• Perform the loop error calculation

1. In the Calibration Module window, select Actions > Data Entry .

2. On the Enter Tag Number dialog, select Find to open the Find Tag dialog.

3. Under Search parameters, set conditions to filter the tag display as necessary and select OK.

   

   • To ensure that an instrument tag is included in a loop error calculation, in the Tag Calibration Settings window, you must set Include in loop error for that tag to Yes.

   • For all instrument tags that are included in a loop error calculation, you must specify the Tolerance units of measure value as %.

4. Under Search results, select the tags that you want to include in the loop error calculation, and select OK.

5. In the Calibration Data Entry window, enter the calibration data for the tags that you selected.

6. To navigate among the tags that you selected for error calculation, do one of the following:

   • On the module toolbar, select to open the Tag List pop-up window, and select the tag for which you want to enter calibration data.

   • On the module toolbar, select Next to display the next tag or select Previous to display the previous tag.

   You have to enter the calibration data for all the tags that you want to include in a loop error calculation on the same day that you intend to perform the calculation. If you enter tag calibration data more than once on a calculation day, the calculation is performed using the results that deviated the most from the predefined tolerance.

7. Select Options > Loop Error.

8. If a message appears with a list of tag numbers that are not yet calibrated, do the following:

   1. In the Calibration Data Entry window, enter the calibration data for the required tag numbers.

   2. Select Options > Loop Error.

   3. On the Loop Error Calculation Method message box, select the required calculation method.

      The calculation method that you set here cannot be changed later. Make sure that you set the optimal calculation method for the selected loop.

   4. Select OK.

9. On the Loop Error Result dialog, after you view the results, select Close.