Emerson Micro Motion 3711, Руководство по конфигурации и использованию, Страница: 204 / 234

196 Micro Motion
®
Model 3711 Gas Flow Computers
Calibration
10. To verify a midpoint value:
a. In the
Dead Weight/Tester
field, enter the midpoint value in EUs.
b. Set the input from the test device to the mA value associated with the midpoint.
c. View the live reading.
d. Click !Log Verify .
11. When you have logged all desired verification points, click
Done
.
12. At the AI Calibration panel, click OK . The calibration is saved and the analog input is
unfrozen and returned to normal operation.
13. Reconnect the RTD input if required.
Example 1 Verify a calibration using the three midpoints that were used during
calibration. The analog input has a range of 0 to 1000 EUs.
Verify the zero point:
1. Enter a value of 0 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 1000 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 .
Verify midpoint 1:
1. Enter a value of 250 in the Dead Weight/Tester Value field.
2. Set the input from the test device to 8 mA.
3. View the live reading.
4. Click !Log Verify .
Verify midpoint 2:
1. Enter a value of 500 in the Dead Weight/Tester Value field.
2. Set the input from the test device to 12 mA.
3. View the live reading.
4. Click !Log Verify .
Verify midpoint 3:
1. Enter a value of 750 in the Dead Weight/Tester Value field.
2. Set the input from the test device to 16 mA.
3. View the live reading.
4. Click !Log Verify .