Title: Conversion Editor
1Conversion Editor
- U.S. Nuclear Regulatory Commission
- Rockville, Maryland
- Pacific Northwest National Laboratory
- November 15-17, 2005
2(Units) Conversion Editor
3To Existing Measures,Edit Existing Unit
Conversions andAdd New Unit Conversions
4(Units) Conversion Editor
A Green text box identifies user-defined input
5Example 1
Define the new Unit ft (for feet) as a function
of the Base Unit m (for meters) ft
independent variable m dependent variable y
ft 3.2802 (x m)
Factors
ft
Unit
Using the equation of a straight line y mx b
Slope
Y-Int
Unit
Base Unit
Base Unit Value
Unit Value
3.2808
3.2808
0
m
ft
1
Meaning
equals
1
m
ft
3.2808
6Example 2
Define the new Unit F as a function of the Base
Unit C C independent variable F dependent
variable y F 1.8 (x C) 32
Factors
F
Unit
Using the equation of a straight line y mx b
Slope
Y-Int
Unit
Base Unit
Base Unit Value
Unit Value
212
1.8
32
C
F
100
Meaning
equals
1
C
F
33.88
7Edit Degrees F, and Input Correction
Incorrect conversion, so Edit
8There are 33.8 F to one C
User-defined
F 9/5 C 32
9Example 3
Define the new Unit nm (for nanometers) as a
function of the Base Unit cm (for
centimeters) cm independent variable nm
dependent variable y nm 107 (x cm)
Factors
nm
Unit
Using the equation of a straight line y mx b
Slope
Y-Int
Unit
Base Unit
Base Unit Value
Unit Value
1.0E07
1.0E07
0
cm
nm
1
Meaning
equals
1
cm
nm
1.0E07
10Add the Conversion nm
11There are 107 nm to one cm
User-defined
12Example 4
Define the new Unit K as a function of the Base
Unit C C independent variable K dependent
variable y K x C 273
Factors
K
Unit
Using the equation of a straight line y mx b
Slope
Y-Int
Unit
Base Unit
Base Unit Value
Unit Value
274
1
273
C
K
1
Meaning
equals
1
C
K
274
13Add the Conversion degrees Kelvin K
14There are 274 K to one C
User-defined
K C 273
15Add New Measures (e.g., Energy)andUnit
Conversions (e.g., Joules, Calories, etc.)
16Example 5 Add the Measure of Energy
Add Energy
17Add a Measure of Energy with a Base Unit of
Joules
18Add Units of Calories cal
191 cal 4.184 J or 1 J 0.239 cal
20ProblemAdd the following Energy Units
- 1 J 0.239 cal 6.238E18eV 9.869E-03 lit-atm
- 0.738 ft-lbs 9.483E-4 BTU
- 1 cal 4.184 J 2.61E19 eV 4.129E-2 lit-atm
- 1 BTU 778.3 ft-lbs 1054.5 J
- 1 BTU equals how many calories?
21Relationship Between BTU and Joules
1 BTU 1054.5 J or 1 J 9.48317E-4 BTU
Note the difference in significant figures