conversion editor u.s. nuclear regulatory commission rockville, maryland pacific northwest national...
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Conversion EditorConversion EditorConversion EditorConversion Editor
U.S. Nuclear Regulatory CommissionRockville, Maryland
Pacific Northwest National LaboratoryNovember 15-17, 2005
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(Units) Conversion Editor
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To Existing Measures,To Existing Measures,Edit Existing Unit Conversions Edit Existing Unit Conversions
andandAdd New Unit ConversionsAdd New Unit Conversions
To Existing Measures,To Existing Measures,Edit Existing Unit Conversions Edit Existing Unit Conversions
andandAdd New Unit ConversionsAdd New Unit Conversions
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Using the equation of a straight line: y = mx + b
Meaning:
equals 1 Independent variable Dependent variableGrayed out value
Grayedout value =
User-definedslope +
User-definedy-intercept
Independentvariable
Dependentvariable
User-defined value forindependent variable
Slope Y-IntUnit Base Unit
Factors
Unit Dependent unit goes here
Base Unit ValueUnit Value
(Units) Conversion Editor
A Green text box identifies user-defined input
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Using the equation of a straight line: y = mx + b
Meaning:
equals 1 m ft3.2808
3.2808 = 3.2808 + 0mft 1
Slope Y-IntUnit Base Unit
Factors
Unit ft
Define the new Unit “ft” (for feet) as a function of the Base Unit “m” (for meters)ft = independent variablem = dependent variabley ft = 3.2802 (x m)
Base Unit ValueUnit Value
Example 1Example 1Example 1Example 1
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Define the new Unit “F” as a function of the Base Unit “C”C = independent variableF = dependent variabley F = 1.8 (x C) + 32
Using the equation of a straight line: y = mx + b
Meaning:
equals 1 C F33.88
212 = 1.8 + 32CF 100
Slope Y-IntUnit Base Unit
Factors
Unit F
Base Unit ValueUnit Value
Example 2Example 2Example 2Example 2
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Edit Degrees F, and Input Correction
Incorrect conversion, so “Edit”
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There are 33.8 F to one C
User-defined
F = 9/5 C + 32
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Using the equation of a straight line: y = mx + b
Meaning:
equals 1 cm nm1.0E+07
1.0E+07 = 1.0E+07 + 0cmnm 1
Slope Y-IntUnit Base Unit
Factors
Unit nm
Define the new Unit “nm” (for nanometers) as a function of the Base Unit “cm” (for centimeters):
cm = independent variablenm = dependent variabley nm = 107 (x cm)
Base Unit ValueUnit Value
Example 3Example 3Example 3Example 3
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Add the Conversion “nm”Add the Conversion “nm”Add the Conversion “nm”Add the Conversion “nm”
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There are 107 nm to one cm
User-defined
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Define the new Unit “K” as a function of the Base Unit “C”C = independent variableK = dependent variabley K = x C + 273
Using the equation of a straight line: y = mx + b
Meaning:
equals 1 C K274
274 = 1 + 273CK 1
Slope Y-IntUnit Base Unit
Factors
Unit K
Base Unit ValueUnit Value
Example 4Example 4Example 4Example 4
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Add the Conversion degrees Kelvin “K”Add the Conversion degrees Kelvin “K”Add the Conversion degrees Kelvin “K”Add the Conversion degrees Kelvin “K”
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There are 274 K to one C
User-defined
K = C + 273
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Add New Add New Measures Measures (e.g., Energy)(e.g., Energy)
andandUnit Conversions Unit Conversions (e.g., Joules, Calories, etc.)(e.g., Joules, Calories, etc.)
Add New Add New Measures Measures (e.g., Energy)(e.g., Energy)
andandUnit Conversions Unit Conversions (e.g., Joules, Calories, etc.)(e.g., Joules, Calories, etc.)
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Example 5Add the Measure of Energy
Add Energy
Add a Measure of “Energy” with a Base Unit of “Joules”
Add Units of Calories “cal”
1 cal = 4.184 J or 1 J = 0.239 cal
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ProblemAdd the following Energy Units
ProblemAdd the following Energy Units
1 J = 0.239 cal = 6.238E+18eV = 9.869E-03 lit-atm = 0.738 ft-lbs = 9.483E-4 BTU1 cal = 4.184 J = 2.61E19 eV = 4.129E-2 lit-atm 1 BTU = 778.3 ft-lbs = 1054.5 J1 BTU equals how many calories?
Relationship Between BTU and Joules
1 BTU = 1054.5 J or 1 J = 9.48317E-4 BTU
Note the differencein significant figures