10.6.1Preparing for density calibration

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.

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.

CAUTION

For T-Series sensors, the D1 calibration must be performed on air and the D2 calibration must be performed on water.

For D3 density calibration, the D3 fluid must meet the following requirements:

•Minimum density of 0.6 g/cm3

•Minimum difference of 0.1 g/cm3 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/cm3

•Minimum difference of 0.1 g/cm3 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/cm3 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

10.6.2Density 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.

104	Micro Motion® Model 2400S Transmitters for DeviceNet™

Emerson Process Management 2400S 10.6.1Preparing for density calibration, Sensor requirements

Models: 2400S