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200 Micro Motion
®
Series 3000 MVD Transmitters and Controllers
Measurement Performance
2. If possible, shut off the flow. Otherwise, pump the fluid through the sensor at the lowest flow
rate allowed by the process.
3. To ensure stable density, make sure the fluid in the flow tubes remains completely free of gas
bubbles during the calibration.
4. Use any established method to derive an accurate density, in g/cm
3
, for the fluid at line
conditions. If water is the high-density calibration fluid, a value from Table 21-5 can be used
for the density.
5. From the Density menu, select
High Density.
a. Set the
D2 value to the line-condition density in grams per cubic centimeter.
b. Select
Calibrate Density, then press SEL. A “Calibration In Progress” alarm is generated.
6. When the calibration is complete:
• In the active alarm log, the alarm changes from “active” to “inactive but unacknowledged.”
• If the calibration succeeded, a “Success” status is displayed.
• If the calibration failed, a “Failed” status is displayed.
7. Press
EXIT to return to the Density menu.
8. (Optional) To clear the alarm from the active alarm log and the alarm bar at the top of the
display, acknowledge the alarm using the procedures described in Chapter 22.
To perform the D3 calibration (T-Series sensors only):
1. Fill the sensor completely with a fluid of known density.
2. If possible, shut off the flow. Otherwise, pump the fluid through the sensor at the lowest flow
rate allowed by the process.
3. To ensure stable density, make sure the fluid in the flow tubes remains completely free of gas
bubbles during the calibration.
4. Use any established method to derive an accurate density, in g/cm
3
, for the fluid at line
conditions.
5. From the Density menu, select
Density D3.
a. Set the
D3 value to the line-condition density in grams per cubic centimeter.
b. Select
Calibrate Density, then press SEL. A “Calibration In Progress” alarm is generated.
6. When the calibration is complete:
• In the active alarm log, the alarm changes from “active” to “inactive but unacknowledged.”
• If the calibration succeeded, a “Success” status is displayed.
• If the calibration failed, a “Failed” status is displayed.
7. Press
EXIT to return to the Density menu.
8. (Optional) To clear the alarm from the active alarm log and the alarm bar at the top of the
display, acknowledge the alarm using the procedures described in Chapter 22.
To perform the D4 calibration (T-Series sensors only):
1. Fill the sensor completely with a fluid of known density.
2. If possible, shut off the flow. Otherwise, pump the fluid through the sensor at the lowest flow
rate allowed by the process.
3. To ensure stable density, make sure the fluid in the flow tubes remains completely free of gas
bubbles during the calibration.