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CAS: Working with Measurement Units

A list of pre-defined constants and measurement units is available in the Catalog. You can also create your own units.

Note: If you know a unit’s name, you can type the unit directly. For example, you can type _qt to specify quarts. To type the underscore symbol on the handheld, press / _.

CAS: Converting Between Measurement Units

You can convert a value between any two units within the same category (such as length).

Example: Using the Catalog, convert 12 meters to feet. The desired expression is 12·_m¢_ft.

1. Type 12 on the entry line.
2. On the Utilities tab, click to show the unit conversions.

Handheld: Press k 3.

3. Click the Length category to expand the list of pre-defined length units.

Handheld: Scroll to the Length category, and press ·.

4. Scroll to meter.

Handheld: Scroll to _m (noting the meter hint in the Help window).

5. Press · to paste _m to the entry line.

6. Click the Conversion Operator (¢) at the top of the Units list, and press · to paste it to the entry line.

7. Select _ft from the Length category, and press ·.

8. Press · to evaluate the expression.

CAS: Creating a User-defined Unit

As with the pre-defined units, user-defined unit names must begin with an underscore symbol.

Example: Using the pre-defined units _ft and _min, define a unit named _fpm that lets you enter velocity values in feet per minute and convert velocity results to feet per minute.

Now you can use the new velocity unit _fpm.

 

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