CDP 4 User Manual

Manage Measurement Units

Plugin: Basic Reference Data Module


A measurement unit is a basic definition of what you are measuring with a parameter. Units are expressions of the magnitude of associated physical quantities.

Manage Measurement Units

Open the Measurement Units browser by selecting the Measurement Units img icon on the Reference Data tab. Measurement Units are given with a Short Name, a Name, Type, and Container RDL. Measurement Units can be of the following types1:


Persons with a role that has the permission Modify on the ClassKind Site Reference Data Library are able to access the Basic RDL to create, edit or delete measurement units. The measurement units can be used in the definition of measurement scales.

A description of the available functionalities is given below. Next to these it is possible to use the generic functionality using the Search img and Help img icons. To make sure the latest data is shown in the browser, it is always possible to refresh it using the Refresh img icon. The measurement unit modal dialogs further have the generic functionality on the Aliases, Definitions and HyperLinks tabs, described in the topic standard tabs.

Create Measurement Unit

To create a new Simple Unit, select the Create Measurement Unit img icon or in the context menu select Create a Simple Unit. On the Basic tab, provide the mandatory fields for Name and Short Name. Furthermore, it is required to provide the Container RDL, see the management and usage of RDLs.

After providing further details, click Ok to create the Simple Measurement Unit.

The required fields for the other types of measurement units:




Edit Measurement Unit

To edit a measurement unit, select the Edit Measurement Unit imgicon or in the context menu select Edit. Depending on the type of measurement unit, it is possible to edit all the available fields on the Basic or content-specific tabs, as well as optional items on the other tabs for Aliases, Definitions, and Hyperlinks.

After making the required changes, click Ok.

Please note that editing measurement units should be handled with extreme care, as this will have a large impact on all engineering models that use concepts that depend on it. It is advisable to only edit measurement units to fix apparent mistakes.

The browsers in the CDP™ Client of the user that performed the editing action will be updated immediately. Other CDP™ Clients will be updated with a [refresh][Refresh].

On the Advanced tab, a Revision Number is given; see the description of Revision Number for details.

Inspect Measurement Unit

To inspect a measurement unit, select the Inspect Measurement Unit imgicon or in the context menu select Inspect. In the Inspect modal dialog, all the details can be seen on the Basic or content-specific tabs, as well as optional tabs for Aliases, Definitions, and Hyperlinks. Additionally the status of the measurement unit is given by the check box for Deprecated, see the description of Delete below.

The Advanced tab provides information that may be useful mostly to CDP™ database administrators. Given are the UniqueID and the Revision Number.

Delete Measurement Unit

A measurement unit should not be deleted from the CDP™.

To delete a measurement unit, select the Delete Measurement Unit imgicon or in the context menu select Delete. Items from the CDP™ are never completely deleted, but they are marked as Deprecated. This Deprecated status is an indication to users that it should not be used anymore.

Export Measurement Units

To export measurement units, select the Export Measurement Units img icon or in the context menu select Export.

Related Topics

  1. Source ECSS-E-TM-10-25-Annex-A, v2.4.1, ToC Reference Manual, section 4.57 

Last modified 11 months ago.

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