Analyzer​.Info

The Analyzer.Info menu item opens the Analyzer Information dialog, in which you can edit Analyzer objects.

Analyzer objects

An analyzer object defines which tags are used to measure component information at a given measurement point in the configuration. Each analyzer can contain many component tags, one for each substance that is a measured component at that point. For example, assume an analyzer object called AN1 exists and the analyzer measures 3 components (P_C1 (methane), P_C2 (ethane), P_C3 (propane)). The measurement data for each component is stored in a historian tag. The methane tag of an analyzer object named AN1 might be called AN1_C1, ethane would be AN1_C2 and propane would be AN1_C3. Such tag information comes from a tag which you may view in the Edit Tag Info dialog, and administrators may edit.

Analyzer objects represent a component measurement point along a stream in your plant where a gas or light liquid is analyzed as to its component makeup. It defines which historian tags contain the relevant component analysis laboratory data for that measurement point. We can calculate the density, molecular weight (MW) or heating value from this component data. Different objects can share the same analyzer object, referencing it in place of component tags. For example, the analyzer object AN1 is used for both Stream A and Stream B objects to calculated the MW and heating value for gas, density for light liquid.

Edit your list of analyzers

• Select Tool > Edit Analyzer Info.

Analyzer Information dialog

If you click the right mouse button on the first column, a context menu appears. This menu lets you copy and paste the selections, as well as add and delete analyzer objects and related components.

Properties

The analyzer object has only the following properties.

• Analyzer Name: Analyzer object name

For each component of the analyzer

• Component Name: Indicates the component being measured by the analyzer.

• Tag Name: Tag name for component measurement.

• Eng. Unit: engineering unit such as wt%, mol% or vol% in which the component is measured.

The other column data such as Process Name, RTDB Tag Name, etc. are related to the tag. You cannot edit this information in this dialog. If you click the Tag Name column, a combo box is shown which permits you to select a tag and navigate to the Edit Tag Info dialog directly.

Change a component tag

You can change the tag of a component by selecting a different tag.

1. From the required row, Select ...

   

   The Edit Tag Information window appears.

   

2. Change the tag information related to the object.

   

3. Select OK.

Example

For example, select the AN_C3 tag instead of the AN_C1 tag and then exit by clicking the OK button in the Edit Tag Information dialog box. You will then see the tag for the P_C1 component is changed to AN_C3.

You can also add a component, such as P_C4 (butane), after which you will need to define which tag it should use. You can click the combo box and go to the Edit Tag Info dialog box directly.

Add a tag

If the tag you wish to use is not defined yet as a tag, in the Tag.Info dialog box, you can add a new tag and when you exit, the new tag will be the one that is selected.

The behavior of the File menu items and the other right-click context menu items, such as Copy, Paste, Save As CSV File, Exit behave similarly to the features of the same name on the Edit Tag Information dialog box, which is based on the same type of grid. See Edit Logic Info.