Emerson Micro Motion 3711, Руководство по конфигурации и использованию, Страница: 205 / 234

Configuration and Use Manual 197
Calibration
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B.2.4 Viewing calibration values for analog inputs or RTD
You can view calibration values for specific analog inputs or for the RTD. You can also view AI
calibration data in the event log. See Section 8.4.2 for information on viewing the event log.
To view calibration values:
1. Click Utilities > AI Calibration Values . The dialog box shown in Figure B-3 is displayed.
Example 2 Verify a calibration, using fifteen midpoints. The analog input has a
range of 100 to 500 EUs.
Calculate the EU value to be associated with each midpoint, to
produce a table similar to the following:
Verify the zero point:
1. Enter a value of 100 in the Dead Weight/Tester Value field.
2. Set the input from the test device to 4 mA.
3. View the live reading.
4. Click !Log Verify .
Verify the span:
1. Enter a value of 500 in the Dead Weight/Tester Value field.
2. Set the input from the test device to 20 mA.
3. View the live reading.
4. Click !Log Verify .
For each midpoint:
1. Enter the EU value in the Dead Weight/Tester Value field.
2. Set the input from the test device to the associated mA value.
3. View the live reading.
4. Click !Log Verify .
Midpoint in
mA Midpoint in
EUs Midpoint in
mA Midpoint in
EUs
5 125 13 325
6 159 14 350
7 175 15 375
8 200 16 400
9 225 17 425
10 250 18 450
11 275 19 475
12 300