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104 Micro Motion
®
Model 2400S Transmitters for DeviceNet
™
Measurement Performance
The calibrations that you choose must be performed without interruption, in the order listed here.
Note: Before performing the calibration, record your current calibration parameters. If you are using
ProLink II, you can do this by saving the current configuration to a file on the PC. If the calibration
fails, restore the known values.
You can calibrate for density with ProLink II or a DeviceNet tool.
10.6.1 Preparing for density calibration
Before beginning density calibration, review the requirements in this section.
Sensor requirements
During density calibration, the sensor must be completely filled with the calibration fluid, and flow
through the sensor must be at the lowest rate allowed by your application. This is usually
accomplished by closing the shutoff valve downstream from the sensor, then filling the sensor with
the appropriate fluid.
Density calibration fluids
D1 and D2 density calibration require a D1 (low-density) fluid and a D2 (high-density) fluid. You
may use air and water. If you are calibrating a T-Series sensor, the D1 fluid must be air and the D2
fluid must be water.
For D3 density calibration, the D3 fluid must meet the following requirements:
• Minimum density of 0.6 g/cm
3
• Minimum difference of 0.1 g/cm
3
between the density of the D3 fluid and the density of water.
The density of the D3 fluid may be either greater or less than the density of water
For D4 density calibration, the D4 fluid must meet the following requirements:
• Minimum density of 0.6 g/cm
3
• Minimum difference of 0.1 g/cm
3
between the density of the D4 fluid and the density of the
D3 fluid. The density of the D4 fluid must be greater than the density of the D3 fluid
• Minimum difference of 0.1 g/cm
3
between the density of the D4 fluid and the density of water.
The density of the D4 fluid may be either greater or less than the density of water
10.6.2 Density calibration procedures
To perform a D1 and D2 density calibration:
• With ProLink II, see Figure 10-8.
• With a DeviceNet tool, see Figure 10-9.
To perform a D3 density calibration or a D3 and D4 density calibration:
• With ProLink II, see Figure 10-10.
• With a DeviceNet tool, see Figure 10-11.
CAUTION
For T-Series sensors, the D1 calibration must be performed on air and the D2
calibration must be performed on water.