Emerson MICRO MOTION 2700 Manual de Instalação descarregar pdf (Página 179)

Transmitter Configuration and Use: Series 1000 and 2000 Transmitters 169

Configuring the Enhanced Density Application continued

Enhanced Density Model 2500 CIOModel 1500 ANCalibration

D.4.2 Data points

The density curve is defined by “data points,” which are user-specified density values. You must enter

one data point for each intersection of a temperature isotherm with a concentration curve. For

example, Figure D-1 shows 5 concentration curves and 6 temperature isotherms, so 30 data points are

required to define this density curve: Point A1, Point A2, . . . Point E6.

Enter data points in the density unit that is currently configured. If the density unit is changed after

density curves have been configured, the density curves are automatically updated to use the new

density unit.

Note: See Section 6.4 for information on configuring the density unit.

The location of the data points is determined by the values used for the concentration curves and the

temperature isotherms at which the data points were measured. The range of temperature isotherms

should include the value specified for reference temperature.

D.5 Configuration procedure

Follow the instructions in this section to configure the enhanced density application.

D.5.1 Loading a standard or custom curve

Note: If the required curve is already loaded onto your transmitter, skip this step and continue with

Section D.5.2.

If a standard or custom curve has been supplied as a file, you must load it onto the transmitter.

1. Set the transmitter measurement units for density and temperature to the units used by the

curve you are loading.

• For standard curves, see Table D-3 for the units to use.

• For custom curves, see the information provided by Micro Motion.

• For information on configuring the measurement units, see Section 6.4.

2. If you are loading a standard curve, set the derived variable to Mass Conc (Dens). If you are

loading a custom curve, set the derived variable to the derived variable used by the custom

curve.

3. In the

ProLink/Configuration window, click on the ED Setup tab. The window shown in

Figure D-2 is displayed.

4. Use the

Curve being configured dropdown list to specify the slot into which the curve will be

loaded (Density Curve 1–6), and click

Apply.

5. Click the

Load this curve from a file button and specify the curve file to be loaded.

6. Repeat this process to load as many curves as required. Make sure that all loaded curves use

the same derived variable.

Note: Loading a curve that uses a different derived variable will erase all existing curve data.

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Emerson MICRO MOTION 2700 Manual de Instalação Página 179