How to Publish a Calculator on PumpCalcs.com
By Robert X. Perez and Bill Stark of PumpCalcs.com
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The Steps to Calculator Publication
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PumpCalcs.com welcomes users to submit calculators for publication on the website. No programming is required by users. We do it all. E-mail the editor for initial approval of your calculator concept. Determine if your calculator is a Basic or Expert Calculator Submit all the calculator requirements to the editor. (See slides #4 through #7 for the Basic Calculator and the slides #8 and #9 for Expert Calculators.) Work with editor to ensure all your information has been inputted properly and that you calculator is working properly.
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Basic or Expert?
Basic calculators are based on simple equations that can be solved explicitly for all variables. Slide 4 shows you an example of a Basic calculator equation Expert calculators 1) guide the user to conclusions or recommendations using built-in logical statements based on industry experience and/or 2) have multiple results.
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Basic Calculator Requirements
First you need to document the formula that your basic calculator is based on. Short form equation
Example:
N s (US )
N (rpm) Q ( gpm) H 3 / 4 ( ft)
Long form equation
Example:
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Basic Calculator Requirements (cont.)
Next, provide all possible variations of your equation, i.e. solve for all variables
Example:
Here we solved for N, the rotation speed You also would need to provide short and long forms equations solving for Q and H.
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Basic Calculator Requirements (cont.)
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The following is required for each calculator variable:
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3. 4. 5.
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Long description Equation symbol Base unit, i.e what units are used in your original formula? All possible conversion units Multipliers required for your unit conversions Statement if a variable unitless
The next slide shows you an example unit details table.
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Base Unit Long Description Flow Flow Flow Flow Equation Symbol Q Q Q Q To convert from this gallons/minute gallons/minute gallons/minute gallons/minute Multiplier by 0.1336806 0.002228009 0.003785412 3785.412 To Convert To cubic feet/minute cubic feet/second meters^3/minute centimeter^3/minute
Flow
Flow Flow Flow Flow Flow Flow Flow Flow Flow Break Horsepower Break Horsepower Break Horsepower
Q
Q Q Q Q Q Q Q Q Q BHP BHP BHP
gallons/minute
gallons/minute gallons/minute gallons/minute gallons/minute gallons/minute gallons/minute gallons/minute gallons/minute gallons/minute horsepower horsepower horsepower
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0.2271247 0.023809524 1.428571429 34.28571429 0.031746032 1.90476 45.71424 227.1247 3.785412 745.6999 0.7456999 33000
gallons/hour
meters^3/hour barrels/minute (petroleum) barrels/hour (petroleum) barrels/day (petroleum) barrels/minute (US) barrels/hour (US) barrels/day (US) liters/hour liters/minute watts kilowatts foot-pounds/minute
Break Horsepower
Break Horsepower Break Horsepower Break Horsepower Specific Gravity Specific Speed Suction Specific Speed
BHP
BHP BHP BHP S.G. N_s N_ss
horsepower
horsepower horsepower horsepower specific gravity specific speed suction specific speed
550
0.7074163 42.44498 2546.699
foot-pounds/second
btu/second btu/minute btu/hour unitless unitless
7 unitless
Expert Calculator Requirements
Expert calculators should be provided in an Excel spreadsheet format. Logical statements and look-ups should be already built-in to the spreadsheet. (See slide #9.) Note if any tables, graphs, or figures links are required. Also, provide at least one example problem in Word format with explanations
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Here’s an example of a Excel spreadsheet that was converted into an Expert Calculator
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The Steps to Calculator Publication
Don’t hesitate asking questions. We want your calculator to be successful. Direct all your questions to Robert Perez at rxperez@pumpcalcs.com Good luck with your submission!
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