Instrucalc IV

INSTRUCAL

INSTRUCAL

FGI ANNULAR PILOT TUBE. INTEGRAL ORIFICE. TARGET AND ELBOW FLOWMETERS. GAS AND LIQUID FLOW.

Fixed Geometry1 Help Contents

This is a program for calculating the size of Integral Flow Orifice Assemblies, Target Meters, Elbow Flow Elements and Annubar Pitot Tubes

For help on each screen: Press F1.

Overview

Program Features

Calculation Menu

Program Lead Sheet

Annubar Size Calculation for liquids

Integral Flow Orifice Meter Size Calculation for liquids

Target Meter Size Calculation for liquids

Elbow Meter Size Calculation for liquids

Calculation Engineering Units for liquids

Material selection

Calculation Printout

Data Sheet

Annubar Size Calculation for Gases

Integral Flow Orifice Meter Size Calculation for Gases

Target Meter Size Calculation for Gases

Elbow Meter Size Calculation for Gases

Summary Printout

Calculation Engineering Units for Gases

Calculation Routines

Program Data File Specification

Importing Data into a Calculation

Pipe Size Data

FIXED GEOMETRY1 Flow Devices -- Program Overview

Version 5. An option has been added to calculate the system losses from a known source pressure to provide the flow meter inlet pressure. The accuracy of this pressure has a considerable impact on the accuracy of the flow measurement. To use the pressure in the vessel which is the source of the flow can cause considerable error because of head and system losses. The fluid density of gases vary considerably with pressure and liquids may have vapor pressure problems or require a specific gravity correction for pressure.

FG1PROG is a program for calculating the size of --

Integral Flow Orifice Assemblies

Target Meters

Elbow Flow Elements

Annubar Pitot Tubes

Programs are provided for liquid and gas

The Integral Flow Orifice Assembly is a device for measuring small flows. The assembly is available in pipe sizes of 1/2, 1, and 1 1/2 inches, with orifices ranging from 0.002 to 1.249 inches. Calculations are available for the square edge, quadrant edge and jewel design, each with options for calculating the orifice size, flowrate or differential range. The program can calculate the discharge coefficient.

The Target Flow Meter is a disk supported in the center of the pipe to provide an annular orifice. The square root of force on the disk is proportional to the flowrate. It has the advantage of having no dam affect and does not require any external piping. The meters are available in line sizes of 1/2 to 4 inches with different size targets for each meter. The program can select the sizes which are applicable to the application.

The Elbow Flow Element is a standard short or long radius elbow, with taps at 45 degrees on the inside and outside of the bend, to measure the differential created by the centrifugal force of the fluid flowing round the bend. The square root of the differential is proportional to the flowrate. The program will calculate either the differential range or the flowrate. It will provide the data for standard or accept data for non standard elbows.

Annubar is a registered trademark of Dover Industries Incorporated. It is a pitot tube device for insertion in pipe, it produces a differential, the square root of which is proportional to flowrate. They are available for all sizes of pipe and have the same characteristics as orifice plates. The advantages are low pressure loss and low installed cost. The disadvantages are a fixed and sometimes low differential and because it may be a long slender column and be subject to vibration and structural problems. The program has options to select the model or calculate the flowrate.

These programs are suitable for use with all gaseous and liquid fluids that are clean, single phase, homogenous and Newtonian. All gases, most liquids and most dense phase fluids associated with the petroleum petrochemical and natural gas industries are Newtonian.

General

If changes are made to data recalled from file, the data will be displayed in the color selected for changed data. This will assist in recognising the affect the changes make to other calculations and the data sheet.

FIXED GEOMETRY Program Features

Programs will --

Perform sizing calculations

Calculate either.-- Element size, Flow rate or Differential range

Calculate permanent pressure and power loss

Calculate accuracy percentage

Supply fluid properties at flow conditions

Supply steam data

Supply pipe sizes

Provide material selection

Use English or SI engineering units in any mixture

Use mass or volume flow units

Import process data

Print a calculation sheet using the Windows Print Manager

Save the data

Prepare instrument data sheets

WUSIWUG style

Initially general- sheets for bid purposes

Supply data base of standard specification items

After vendor selection, revise for permanent records

Print a data sheet using the Windows Print Manager

Save the data

Print a summary of saved items

Print all records

Print selected records

Print only records having required characteristics

FG1 Program Menu Options

New calculation

Select the required calculation option and the fluid option, then select OK

(or doubleclick if at least one of the options is already selected).

File

Default files

Recalls file data using the files in the default drives and paths.

Other files

Recalls file data using the Windows file selection procedure.

Data file maintenance

Edit Tag Numbers

Provides the facility to change the Tag Numbers on file.

Or delete records from file.

Sort data file

Rearrange the Tag Numbers in ascending order.

Delete the items marked if the edit was saved.

(Verion 5.0)Data files

Path for the default calculation data files.

User units

Path for the user selection set of engineering units.

Headings

Path for the printout headings.

There are three paths. If a Drive and Path different from the Default Path and Drive provided in the initial Set Up Procedure was used, the program will update them to the Drive and Path which was installed. They are saved in sequential file FG1CALC.DRV which resides with the programs. To check or change the paths, either call up the Drive and Path for edit or use a text editor to or change the file contents.

Convert V3 file stage

InstruCalc version 3 file conversion to Windows format.

Exit

Exits from InstruCalc to Windows Program Manager.

Edit Tables

(Version 5.0)

InstruCalc uses Data Tables for Gas, Liquid,Pipe Size and Material properties, these contain data from which exact properties for the flow conditions are calculated. It also has tables for IFOA, Annubar and Elbow data. These option provides an easy means of customizing them. Items can be added, inserted, deleted and changed. Restrictions are built into the Materials Coefficient of Expansion table on insertion and deletion because the row number is used to save data in the calculations.

Each program can edit the tables used in the program. Take note that some, such as the Gas, Liquid and Pipe Size are used by other programs and may include data required only by them.

Editing is performed by either clicking the appropriate line in the Grid or entering the line number in Row to Edit and clicking Recall Row. Edit the data and Load Row to the Grid. When a box in the edit line is clicked, information on the data required is displayed above. Save Grid overwrites the old file. A backup file is recommended before you start. The file name is in the heading of the Edit Form and the files are in the program directory.

Note that data cannot be edited directly in the grid.

Color

Provides color options for InstruCalc displays, using the Windows palette.

Note that colors for scroll bars, command buttons, disabled text, borders etc., are selected through the Windows Control Panel

Print Summary

Goes to the print summary program.

Fixed Geometry1 Program Lead Sheet

The program will only stop at the Lead Sheet if it fails to find the default paths file.

To continue, type in the paths and save the file.

The Data Files are specific to a project and an instrument type

The Units File may be common for all projects and specific for an instrument type

The Headings File may be specific for a project and common for all instruments

FG1 Annubar Flow Element Liquid Calculation.

Annubar is a trademark of Dover Industries Incorporated.

Version 5. Option added. If the exact inlet pressure is not known, but a source pressure is known then use the option to calculate the flow element inlet pressure. First use an approximate inlet pressure and calculate the flow element to set up the variables, take the option and calculate the system losses, three cases are available. Transfer the selected case to the flow element calculation, re-select the fluid properties and recalculate the flow calculation. Light hyrocarbons may require a specific gravity correction. Volatile liquids may have a vapor pressure problem.

The magnitude of the differential produced by an Annubar is a function of the pipe size and the model selected. The differential is fixed by the design. For a specified flow rate the transmitter will need to be calibrated to the differential produced by the design selected. There is a maximum differential range, above which there is a danger of structural problems where it may fail because of vibration. There are five designs of increasing ruggedness, four of which have options for support on both sides of the pipe. They are either thread mounted or flange mounted, the thread mounted being the most rugged because it has a shorter length.

Model Features

ModelPipe size rangeSupportMountingMaximum Differential

101/2to2inchesOne sideThread1500to260inH2O

101/2to2inchesOne sideFlange1500to260inH2O

152to5inches One sideFlange87to23inH2O

152to5inchesOne sideThread630to124inH2O

162to

5inchesBoth sidesEither720to164inH2O

254to42inchesOne sideFlange142to4inH2O


264to42inchesBoth sidesEither1010to28inH2O







Engineering Units.

There are four standard unit sets and one user selected set available --

Mass Flow - English units.Pounds per hour and degrees Fahrenheit.

Volume Flow - English Units.US gallons per minute and degrees Fahrenheit.

Mass Flow - SI Units.

Kilograms per second and degrees Centigrade.

Volume Flow - SI Units.

Litres per second and degrees Centigrade.

User Units.

A set of units selected from the Liquid Flow Engineering Unit screen

To make or change a User Unit set select the option Review units.

The Liquid Flow Engineering Unit screen will be displayed. It shows the available options and the current unit selection.

Select the required units and save the User file.

Unit Selection.

A new calculation loads the default units, which can be any of the five available options. It is set up by selecting the required units under the Engineering Units menu, then going back into the same menu and saving it as the default. Two defaults are available, one for liquids, set in the liquid calculation and one for gas, set in the gas calculation.

If process data is downloaded to a calculation which is displaying the wrong units, any of them can be overwritten with any of the five standard unit options without converting any of the data. To do this, under the Engineering Units menu, select the option Change units, no conversion , this will then allow one selection from the menu without conversion and then revert to normal operation.

The Unit Selection can be made at any time. The input data will be converted to the new units. If a volumetric flow unit set is selected and the specific gravity at base conditions is not available the flow is set to zero. Units for any individual input entry can be changed by the selecting the Review Units option and choosing from the Liquid Flow Engineering Unit screen.

Fluid Properties.

The Fluid properties option is enabled when the pressure and temperature are entered. The properties required for a calculation are available for pure liquids and mixtures and are provided in the selected units. Caution should be used for mixtures of dissimilar fluids because the mixture law may not apply.

For a pure liquid find the name and select (or double-click) the name, the fluid properties will be entered.

For a mixture select the first component. In the component box, enter the percentage. Continue until the remaining percentage equals zero, then select calculate in the component box and the program will calculate and enter the mixture values. The fluid properties data base is user updateable.

Base Conditions

The Base Conditions option will display the current values of base pressure, base temperature and the barometric pressure. They should be checked and modified and saved to suit the operating conditions. ISO specifies a base temperature of 14.696 psia (101.325 kilopascals) and 59 degF (15 degC). AGA specifies a base pressure of 14.73 psia for natural gas, 14.696 for liquids with a vapor pressure equal or less than one atmosphere, and a base temperature of 60 degF

Calculation options are --

Auto Select Model.

Manual Select Model

Flowrate.

Select the calculation option and the necessary input data is enabled. The required variable will be disabled and will receive the calculated value.

The Auto Select will start at the model 10 and find a size, the manual select will calculate for the selection and Calculate Flowrate will calculate the flow for your selection of all other data.

Pipe ID

To look up the pipe dimensions, click the meter tube button.

The pipe sizes screen will be displayed.

Enter the nominal pipe size.

Click the Search button to display the available sizes.

Select the required inside diameter(Double-click or click OK).

Material Selection.

Click the Element material to display the materials screen.

On the materials screen, select the required material.

Repeat for the Pipe material.

Input Data

The options selected enable the input boxes of the data required for the calculation and disable the input boxes for the calculated outputs and the data not required.

The maximum flow rate is the upper range value.

The normal flow will be the point of greatest accuracy.

The Specific gravity at base conditions is only required for volumetric flow

Calculate

Click the Calculate button.

The program will validate the input data.

If not valid it will display the unsatisfactory data.

If valid it will --

Calculate the output data.

Display the results.

Enable the calculation printout.

Enable the data sheet option.

Calculation Results

The output data should be examined for adequacy.

The Auto select model only finds the smallest model. It may not be your preferred choice, try other options with Manual select

Change data as required and recalculate.

Filing and Moving On

The options in the File menu are --

Program menu -- Clears the calculation and returns to the main menu.

Prepare data sheet --Is enabled after a calculation is made, it displays the screen to prepare a data sheet form for the calculated item.

New - Clears the screen for a new calculation.

Save - Using the default path, it saves a new record if not previously saved or saves changes to an existing record.

Save New.-.Using the default path, it saves an existing record as a new record ( Used to duplicate similar items. i.e. Recall an existing record. Edit as required and Save New).

Save As.... - Uses the Windows file access system. Saves to a file anywhere.

Import data - Select the units and read Input data supplied in sequential files.

File default path - Changes the default paths for the calculation records.

The default paths are --

The Data Files. (FG1DAT.TAG and FG1DAT.DAT).

The User Unit Files. (FG1DAT.UNS).

The Printout Headings File (HEADINGS.DAT).

Print calculation - Is enabled after a calculation is made. It displays the screen to print a calculation.

Exit -- Leaves the program and returns to the Windows Program Manager.

FG1 Integral Flow Orifice Assembly Liquid Calculation.

These are available in 1/2 inch 1 inch and 11/2 inch pipe sizes with standard orifice plates ranging from 0.002 to 1.249 inches diameter. Schedule 40 meter runs are available with precision bored pipe. The 1/2 inch is bored to 0.66 inch (16.76 mm), the 1 inch to 1.093 inch (27.76 mm) and the 11/2 to 1.561 inch (39.65 mm). Orifice plate design can be sharp edge, quadrant edge or jewel.


Engineering Units.








User Units.





Unit Selection.




Fluid Properties.




Base Conditions



Orifice size

Flowrate

Differential range

It is a good idea to use standard size orifice plates where possible. Select the Differential range and the necessary input data is enabled. The required variable will be disabled and will receive the calculated value.

Orifice Design

Square edge

Quadrant edge

Jewel

The Square edge option covers for most flows, the Quadrant edge is for small flows and the Jewel is for very small flows

Pipe ID






Material Selection.



The Element material option is disabled for a jewel orifice plate.


Input Data





Double click the Orifice diameter text box to display the Standard Orifice sizes.

Calculate




If valid it will --





Calculation Results


If the differential range is not suitable select a different orifice size

Special sizes are available if absolutely necessary.


















FG1 Target Meter Liquid Calculation.

Taget meters are available in sizes 1/2 inch to 4 inches, sizes over 1 inch have two target sizes. They are calibrated by selecting a force on the target as the upper range value. This calibration adjustment and the different body and target sizes ensure that all desired intermediate ranges can be covered.

Th program starts at the minimum size and finds a combination suitable for the application.


Engineering Units.



Volume Flow - English Units.US gallons per minute per minute and degrees Fahrenheit




Litres per second per second and degrees Centigrade.

User Units.





Unit Selection.



The Unit Selection can be made at any time. The input data will be converted to the new units. If a volumetric flow unit set is selected and the specific gravity at standard conditions is not available the flow is set to zero. Units for any individual input entry can be changed by the selecting the Review Units option and choosing from the Liquid Flow Engineering Unit screen.

Fluid Properties.

The Fluid properties option is enabled when the pressure and temperature are entered. The properties required for a calculation are available for pure liquid and mixtures and are provided in the selected units. Caution should be used for mixtures of dissimilar fluids because the mixture law may not apply.



Base Conditions


Material Selection.

Click the Target material to display the materials screen.



Input Data



Calculate




If valid it will --





Calculation Results



















FG1 Elbow Flow Meters Liquid Calculation.

Elbow meters can be useful for a quick way of measuring flow in an existing line, find an elbow and install pressure taps on the inside and outside of the taps, connect a differential pressure instrument and you can measure flow. The differential range is non adjustable and not very large Accuracy in the range 4 to 5 percent can be expected.

Engineering Units.








User Units.





Unit Selection.




Fluid Properties.




Base Conditions



Flowrate

Differential range

Pipe ID






Material Selection.

Click the Meter Tube material to display the materials screen.


Elbow Mean Radius

Select either the Short Radius or Long Radius for automatic determination or enter the radius in the text box.

Input Data





Calculate




If valid it will --





Calculation Results



















FG1 Liquid Engineering Units

The screen shows the process variables used in a liquid calculation and list the available options. To assure full coverage each (Except Flow Time Base) has an Other option. This is a user defined unit. Double click the option and it will display the name and multiplier to convert it to the standard units. The standard unit is always the first item in the list.

The screen shows the current selection. Any unit may be chosen and will be used in the calculation if OK is selected.

To create a User File for the User File Unit option in the calculation, select the desired units and click the save button

A double click on any unit option selects that option and returns to the calculation.

Data conversion

For all items except flow, the unit change represents only a multiplier to convert the input data and the data is always converted. The Flow Quantity option has Mass and Volume options. The relationship between mass flow and volume flow is a multiplier and the specific gravity of the fluid. It is conventional when measuring flow by volume that it be at a standard temperature (Usually 60 degrees Fahrenheit). Two specific gravity values are necessary for a volumetric flow calculation, mass flow cannot be converted to volume flow until the specific gravity at standard conditions is available.

Conversion factors and units are based on API 2564

Definition of units

Mass flow units :

lb = pounds

kg = kilograms

tonne = 1000 kg = 1Mg

g = gram

UKton = 2240 lb

USton = 2000 lb

Other = user defined mass unit

Volume flow units :

USgal = US gallons

litre = litres

ft3 = cubic feet

UKgal = UK gallons

m3 = cubic metres

bbl = barrels (42 US gallons)

cm3 = cubic centimetres

Other = user defined volumetric unit

Flow time base :

/s = per second

/m = per minute

/h = per hour

/d = per day

Gauge pressure :

psig = pounds per square inch gauge

kPag = kiloPascals gauge

atg = atmospheres gauge

inhgg = inches of mercury gauge

MPag = megaPascals gauge

inH2Og = inches of water gauge

mmhgg = millimetres of mercury gauge

barg = bars gauge

kg/cm2g = kilograms per square centimetre gauge

Other = user defined gauge pressure unit

Absolute pressure :

psia = pounds per square inch absolute

kPaa = kiloPascals absolute

inhga = inches of mercury absolute

mmhga = millimetres of mercury absolute

Other = user defined absolute pressure unit

Temperature :

degF = degrees Fahrenheit

degF = degrees Centigrade

degR = degrees Rankine

degK = degrees Kelvin

Other = user defined temperature unit

Viscosity :

cp = centipoises

Pa.s = Pascal seconds

cs = centistokes

kPa.s = kiloPascal seconds

Other = user defined viscosity unit

Differential pressure :

inH2O = inches of water

kPa = kiloPascals

inhg = inches of mercury

mmH2O = millimetres of water

mBar = millibars

Other = user defined differential

Pipe and orifice diameter :

in = inches

mm = millimetres

cm = centimetres

ft = feet

m = metres

Other = user defined size

Fixed Geometry1 Material Selection

The Drop Down Menu displays the material options. The temperature thermal expansion coefficients are selected with the material. A thermal correction for both pipe and flowmeter is made

Either make a new selection (Double click or click then click OK).

Or click Cancel to return with no change.

The program will return to the calculation.

FG1 Calculation Data Printout

This program will print the input and output calculation data and one associated comment. The comment is included in the data sheet for reference purposes

It also creates the default printout headings. The headings are printed at the top of all printouts. They are saved in the HEADINGS.DAT file. This is the third default path. If all programs are set to the same path, this becomes the default headings for all program printouts

Save. Saves the headings

Cancel. Returns to the calculation form without printing

OK. Prints the headings and calculation using the Windows Print Manager, then returns to the calculation form

Fixed Geometry1 Data Sheet

The first use of the data sheet is to obtain competitive bids. It should initially emphasize the engineering requirements and be fairly general regarding the details. When a vendor is selected it should be updated to the exact details so that the data sheet is a record of the instrument purchased.

The relevant data from the calculation is automatically displayed. Minor editing , such as rounding can be performed. Major editing should be done in the calculation routine in order to preserve the integrity of the calculation

A user defined data base is available to enter data for those inputs which have a limited number of options. To activate this, double click the input box, the data on file is displayed. Double click the required option and the data is transferred to the data sheet form.

The data base should be customized for the project requirements. To edit the data; click the selected item. Edit the data in the active top line, select Replace, continue with the edit and Save on completion. The Input data menu option has option to enter either the first or the second item in the list for all items. If the data base is constructed so that the first item is the first standard selection and the second item is the second standard selection then two standard data sheets are available for a single keystroke. This feature only enters data into empty input boxes.

Some input boxes require unique data which is typed in

Space is provided to enter information for non standard options. Enter the title and data , it will be saved with the other data.

Three lines of notes of special instructions are available at the bottom of the data sheet.

The input data is limited to 25 characters and 60 characters for each of the notes.

The data sheet is saved along with the other data in the calculation options.

File options

Print data sheet Prints the data sheet using the Windows Print Manager. Refer to Windows Help

Go to calculation. Returns to the calculation form using the same record

Update headings Overwrites the headings with the current default set

Select font Uses the Windows Font Style system

Select printer Uses the Windows Print System

FG1 Annubar Flow Element Gas Calculation.

Annubar is a trademark of Dover Industries Incorporated.

The magnitude of the differential produced by an Annubar is a function of the pipe size and the model selected. The differential is fixed by the design. For a specified flow rate the transmitter will need to be calibrated to the differential produced by the design selected. There is a maximum differential range, above which there is a danger of structural problems where it may fail because of vibration. There are five designs of increasing ruggedness, four of which have options for support on both sides of the pipe. They are either thread mounted or flange mounted, the thread mounted being the most rugged because it has a shorter length.

Version 5. Option added. If the exact inlet pressure is not known, but a source pressure is known then use the option to calculate the flow element inlet pressure. First use an approximate inlet pressure and calculate the flow element to set up the variables, take the option and calculate the system losses, three cases are available. Transfer the selected case to the flow element calculation, re-select the fluid properties and recalculate the flow calculation. Gases will require a density correction.

Model Features

ModelPipe size rangeSupportMountingMaximum Differential

101/2to2inchesOne sideThread1500to260inH2O

101/2to2inchesOne sideFlange1500to260inH2O

152to5inches One sideFlange87to23inH2O


162to

5inchesBoth sidesEither720to164inH2O










Engineering Units.



Volume Flow - English Units.Standard cubic feet per minute and degrees Fahrenheit



Volume Flow - SI Units.Standard cubic decimeters per second and degrees Centigrade

User Units.

A set of units selected from the Gas Flow Engineering Unit screen


The Gas Flow Engineering Unit screen will be displayed. It shows the available options and the current unit selection.


Unit Selection.



The Unit Selection can be made at any time. The input data will be converted to the new units. If a volumetric flow unit set is selected and the molecular weight is not available the flow is set to zero. Units for any individual input entry can be changed by the selecting the Review Units option and choosing from the Gas Flow Engineering Unit screen.

Fluid Properties.

The Fluid properties option is enabled when the pressure and temperature are entered. The properties required for a calculation are available for pure gas and mixtures and are provided in the selected units. Caution should be used for mixtures of dissimilar fluids because the mixture law may not apply.

For a pure gas find the name and select (or double-click) the name, the fluid properties will be entered.


Base Conditions

The Base Conditions option will display the current values of base pressure, base temperature and the barometric pressure. They should be checked and modified and saved to suit the operating conditions. ISO specifies a base temperature of 14.696 psia (101.325 kilopascals) and 59 degF (15 degC). AGA specifies a base pressure of 14.73 psia for natural gas, 14.696 for liquid with a vapor pressure equal or less than one atmosphere, and a base temperature of 60 degF


Auto Select Model.

Manual Select Model

Flowrate.

Select the calculation option and the necessary input data is enabled. The required variable will be disabled and will receive the calculated value.

The Auto Select will start at the model 10 and find a size, the manual select will calculate for the selection and Calculate Flowrate will calculate the flow for your selection of all other data.

Pipe Inside Diameter






Material Selection.




Input Data




If Density is to be calculated, the critical pressure and temperature is required.

Calculate




If valid it will --





Calculation Results


The Auto select model only finds the smallest model. It may not be your preferred choice, try other options with Manual select


















FG1 Integral Flow Orifice Assembly Gas Calculation.

These are available in 1/2 inch 1 inch and 11/2 inch pipe sizes with standard orifice plates ranging from 0.002 to 1.249 inches diameter. Schedule 40 meter runs are available with precision bored pipe. The 1/2 inch is bored to 0.66 inch (16.76 mm), the 1 inch to 1.093 inch (27.76 mm) and the 11/2 to 1.561 inch (39.65 mm). Orifice plate design can be sharp edge, quadrant edge or jewel.


Engineering Units.






Volume Flow - SI Units.Standard cubic decimeters per second and degrees Centigrade.

User Units.





Unit Selection.




Fluid Properties.




Base Conditions



Orifice size

Flowrate

Differential range

It is a good idea to use standard size orifice plates where possible. Select the Differential range and the necessary input data is enabled. The required variable will be disabled and will receive the calculated value.

Orifice Design

Square edge

Quadrant edge

Jewel

The Square edge option covers for most flows, the Quadrant edge is for small flows and the Jewel is for very small flows

Pipe Inside Diameter






Material Selection.



The Element material option is disabled for a jewel orifice plate.


Input Data




Double click the Orifice diameter text box to display the Standard Orifice sizes.

Calculate




If valid it will --





Calculation Results


If the differential range is not suitable select a different orifice size

Special sizes are available if absolutely necessary.


















FG1 Target Meter Gas Calculation.

Taget meters are available in sizes 1/2 inch to 4 inches, sizes over 1 inch have two target sizes. They are calibrated by selecting a force on the target as the upper range value. This calibration adjustment and the different body and target sizes ensure that all desired intermediate ranges can be covered.

Th program starts at the minimum size and finds a combination suitable for the application.


Engineering Units.







User Units.





Unit Selection.




Fluid Properties.




Base Conditions


Material Selection.

Click the Target material to display the materials screen.



Input Data



Calculate




If valid it will --





Calculation Results



















FG1 Elbow Flow Meters Gas Calculation.

Elbow meters can be useful for a quick way of measuring flow in an existing line, find an elbow and install pressure taps on the inside and outside of the taps, connect a differential pressure instrument and you can measure flow. The differential range is non adjustable and not very large Accuracy in the range 4 to 5 percent can be expected.


Engineering Units.



Volume Flow - English Units.Standard cubic feet per minute and degrees Fahrenheit.




User Units.





Unit Selection.




Fluid Properties.

The Fluid properties option is enabled when the pressure and temperature are entered. The properties required for a calculation are available for pure gases and mixtures and are provided in the selected units. Caution should be used for mixtures of dissimilar fluids because the mixture law may not apply.



Base Conditions



Flowrate

Differential range

Pipe ID






Material Selection.

Click the Meter Tube material to display the materials screen.


Elbow Mean Radius

Select either the Short Radius or Long Radius for automatic determination or enter the radius in the text box.

Input Data





Calculate




If valid it will --





Calculation Results



















Fixed Geometry1 Summary

The program will provide a printout summary of data sheet records on file.

It can provide a printout of either --

All fields

Selected fields

Fields equal to

Fields not equal to

Fields equal to or less than

Fields equal to or greater than

Fields less than

Fields more than

Procedure for a new Summary

Select Options

Clear checks

Clears all check on the form

Clear Other Data Clears all other data on the form

Make new field selections

Each field has four boxes--

A check box to select the field

A box to specify the field width

A box to enter data to compare

A box to specify the compare method (Double click for data)

Select data relationship

And or or

Click Print to print using Windows Print Manager

File Options

Save print options

Saves a standard printout

Go to Program Menu Form

Returns to program menu for further work on this module

Exit

Returns to the Windows Program Manager

Procedure for a standard printout

Select Options

Recall saved options

Print

Procedure to print all fields

Select Options

Check all

Print

Other Options

Select font

Windows font selection procedure

Select Printer

Windows Print manager

FG1 Gas Engineering Units

The screen shows the process variables used in a liquid calculation and list the available options. To assure full coverage each (Except Flow Time Base) has an Other option. This is a user defined unit. Double click the option and it will display the name and multiplier to convert it to the standard units. The standard unit is always the first item in the list.

The screen shows the current selection. Any unit may be chosen and will be used in the calculation if OK is selected.

To create a User File for the User File Unit option in the calculation, select the desired units and click the save button

A double click on any unit option selects that option and returns to the calculation.

Data Conversion

For all items except flow, the unit change represents only a multiplier to convert the input data and the data is always converted. The Flow Quantity option has Mass and Volume options. The relationship between mass flow and volume flow is a multiplier and the molecular weight of the gas, conversion can only be made when the molecular weight has been entered.

Conversion factors and units are based on API 2564

Definition of units

Mass flow units :

lb = pounds

kg = kilograms

tonne = 1000 kg = 1Mg

g = gram

UKton = 2240 lb

USton = 2000 lb

Other = user defined mass unit

Volume flow units :

sft3 = standard cubic feet

sdm3 = standard cubic decimetres

sm3 = standard cubic metres

Msft3 = million standard cubic feet

Other = user defined volume unit

Time base :

/s = per second

/m = per minute

/h = per hour

/d = per day

Gauge pressure :

psig = pounds per square inch gauge

kPag = kiloPascals gauge

atg = atmospheres gauge

inhgg = inches of mercury gauge

MPag = megaPascals gauge

inH2Og = inches of water gauge

mmhgg = millimetres of mercury gauge

barg = bars gauge

kg/cm2g = kilograms per square centimetre gauge

Other = user defined gauge pressure unit

Absolute pressure :

psia = pounds per square inch absolute

kPaa = kiloPascals absolute

ata = atmospheres absolute

bara = bars absolute

Mpaa = megaPascals absolute

kg/cm2a = kilograms per square centimetre absolute

inhga = inches of mercury absolute

mmhga = millimetres of mercury absolute

Other = user defined absolute pressure unit

Temperature :

degF = degrees Fahrenheit

degF = degrees Centigrade

degR = degrees Rankine

degK = degrees Kelvin

Other = user defined temperature unit

Viscosity :

cp = centipoises

Pa.s = Pascal seconds

cs = centistokes

kPa.s = kiloPascal seconds

Other = user defined viscosity unit

Differential pressure :

inH2O = inches of water

kPa = kiloPascals

inhg = inches of mercury

mmH2O = millimetres of water

mBar = millibars

Other = user defined differential

Pipe and orifice diameter :

in = inches

mm = millimetres

cm = centimetres

ft = feet

m = metres

Other = user defined size

Density

lb/ft3 = pounds per cubic foot

kg/m3 = kilograms per cubic metre

g/cm3 = grams per cubic centimetre

lb/in3 = pounds per cubic inch

Other = user defined density unit

FIXED GEOMETRY1 Data Files

INSTRUCALC V4 Random access file specification for FG1 flow elements FG1DAT.Dat.

Tag Numbers are stored in the sequential file FG1DAT.TAG. Its number in the file is the record number in the random access file.

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Type FileData

'Calculation info

ProgNum As Integer

2 bytes.Program number Liq20

ElemMatlNom As Integer2 bytes.Element material number

PipeMatlNum As Integer

2 bytes Pipe material

FloBasis As String * 3

3 bytes."Mas" denotes a mass calculation, "Vol" a volume

Code As String * 3

3 bytes. "Yes" or "No" for drainhole

FS(1 To 15) As Single

60 bytes.Units conversion factor

GS(1 To 20) As Single

80 bytes.Variable data

UnS(1 To 15) As String * 8120 bytes.Unit Name

'Data sheet info

SdS(1 To 7) As Single

28 bytes.

AraS(1 To 22) As String * 25550 bytes.Data sheet array selections

Txt1(1 To 3) As String * 2575 bytes.Data sheet service,line num, fluid

Txt2(1 To 3) As String * 60180 bytes.Data sheet notes

TXT3(1 To 7) As String * 1070 bytes.Data sheet num,spec,rev,date,req,by,appr

End Type

Record len=1175

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Common to all Elements

ElemMatlNom and PipeMatlNum

If material number = 1 Then Material = "301 stainless steel"






If material number = 7 Then Material = "Aluminum bronze"

If material number = 8 Then Material = "Beryllium copper"

If material number = 9 Then Material = "Carbon steel"

If material number = 10 Then Material = "Copper"

If material number = 11 Then Material = "Cupronickel"

If material number = 12 Then Material = "Hastelloy B"

If material number = 13 Then Material = "Hastelloy C"

If material number = 14 Then Material = "Haynes stellite 25"

If material number = 15 Then Material = "Inconel X"

If material number = 16 Then Material = "K - Monel"

If material number = 17 Then Material = "Nickel"

If material number = 18 Then Material = "Pyrex glass"

If material number = 19 Then Material = "Tantalum"

If material number = 20 Then Material = "Titanium"

FloBasis"Mas" denotes a mass calculation, "Vol" a volume

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Liquid

_______________________________________________________

If ProgNum = 2 Then Program = "Integral flow orifice meter - liquid"

If Code = "CSq" then Orifice = Calculated discharge coefficient - Square edge

If Code = "CQu" then Orifice = Calculated discharge coefficient - Quadrant edge

If Code = "CJe" then Orifice = Calculated discharge coefficient - Jewel

If Code = "ESq" then Orifice = Entered discharge coefficient - Square edge

If Code = "EQu" then Orifice = Entered discharge coefficient - Quadrant edge

If Code = "EJe" then Orifice = Entered discharge coefficient - Jewel

GS(1) = Maximum flow

FS(1)UnS(1)

GS(2) = Flow temperature

UnS(2)

GS(3) = Inlet pressure

FS(3)UnS(3)

GS(4) = Differential range

FS(4)UnS(4)

GS(5) = Specific gravity at flow conditions

GS(6) = Specific gravity at standard conditions

GS(7) = Viscosity

FS(7)UnS(7)

GS(8) = Pipe inside diameter

FS(8)UnS(8)

GS(12) = Orifice size

FS(12)UnS(12)

GS(13) = Base pressure

FS(13)UnS(13)

GS(14) = Base temperature

UnS(14)

GS(15) = Barometric pressure

FS(15)UnS(15)

GS(16) = Discharge coefficient

GS(18) = Normal flow

FS(1)UnS(1)

SDS(1) = Normal flow differential

FS(4)UnS(4)

SDS(2) = Nominal pipe size

UnS(8)

SDS(3) = Plate thickness

FS(12)UnS(12)

SDS(4) = Beta ratio

SDS(5) = Chart multiplier

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If ProgNum = 3 Then Program = "Target flow meter - liquid"


FS(1)UnS(1)


UnS(2)


FS(3)UnS(3)

GS(4) = Minimum range

FS(1)UnS(1)



GS(7) = Viscosity

FS(7)UnS(7)

GS(12) = Target diameter

FS(12)UnS(12)


FS(13)UnS(13)


UnS(14)


FS(15)UnS(15)

GS(18) = Maximum range

FS(1)UnS(1)


UnS(8)


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If ProgNum = 4 Then Program = "Elbow flow meter - liquid"


FS(1)UnS(1)


UnS(2)


FS(3)UnS(3)


FS(4)UnS(4)



GS(7) = Viscosity

FS(7)UnS(7)


FS(8)UnS(8)

GS(12) = Elbow mean radius

FS(12)UnS(12)


FS(13)UnS(13)


UnS(14)


FS(15)UnS(15)


FS(1)UnS(1)


FS(4)UnS(4)


UnS(8)


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If ProgNum = 6 Then Program = "Annubar pitot tube - liquid"

If Code = "Thr" then Mount="Thread"

If Code = "Fla" then Mount="Flange"


FS(1)UnS(1)


UnS(2)


FS(3)UnS(3)


FS(4)UnS(4)



GS(7) = Viscosity

FS(7)UnS(7)


FS(8)UnS(8)

GS(12) = Model number


FS(13)UnS(13)


UnS(14)


FS(15)UnS(15)


FS(1)UnS(1)


FS(4)UnS(4)


UnS(8)


_________________________________________

Gas

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If ProgNum = 22 Then Program = "Integral flow orifice meter - gas"

If Code = "CSq" then Orifice = Calculated discharge coefficient - Square edge

If Code = "CPU" then Orifice = Calculated discharge coefficient - Quadrant edge

If Code = "Cue" then Orifice = Calculated discharge coefficient - Jewel

If Code = "Esq." then Orifice = Entered discharge coefficient - Square edge

If Code = "ECU" then Orifice = Entered discharge coefficient - Quadrant edge

If Code = "Edge" then Orifice = Entered discharge coefficient - Jewel


FS(1)UnS(1)


UnS(2)


FS(3)UnS(3)


FS(4)UnS(4)

GS(5) = Molecular weight

GS(6) = Ratio of specific heats

GS(7) = Viscosity

FS(7)UnS(7)


FS(8)UnS(8)

GS(9) = Density

FS(9)UnS(9)

GS(10) = Critical pressure

FS(10)UnS(10)

GS(11) = Critical temperature

UnS(11)

GS(12) = Orifice size

FS(12)UnS(12)


FS(13)UnS(13)


UnS(14)


FS(15)UnS(15)

GS(16) = Discharge coefficient


FS(1)UnS(1)


FS(4)UnS(4)


UnS(8)

SDS(3) = Plate thickness

FS(12)UnS(12)

SDS(4) = Beta ratio


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If ProgNum = 23 Then Program = "Target flow meter - gas"


FS(1)UnS(1)


UnS(2)


FS(3)UnS(3)

GS(4) = Minimum range

FS(1)UnS(1)



GS(7) = Viscosity

FS(7)UnS(7)

GS(9) = Density

FS(9)UnS(9)


FS(10)UnS(10)


UnS(11)

GS(12) = Target diameter

FS(12)UnS(12)


FS(13)UnS(13)


UnS(14)


FS(15)UnS(15)

GS(18) = Maximum range

FS(1)UnS(1)


UnS(8)


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If ProgNum = 24 Then Program = "Elbow flow meter - gas"


FS(1)UnS(1)


UnS(2)


FS(3)UnS(3)


FS(4)UnS(4)



GS(7) = Viscosity

FS(7)UnS(7)


FS(8)UnS(8)

GS(9) = Density

FS(9)UnS(9)


FS(10)UnS(10)


UnS(11)

GS(12) = Elbow mean radius

FS(12)UnS(12)


FS(13)UnS(13)


UnS(14)


FS(15)UnS(15)


FS(1)UnS(1)


FS(4)UnS(4)


UnS(8)


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If ProgNum =26 Then Program = "Annubar pitot tube - gas"

If Code = "Thr" then Mount="Thread"

If Code = "Fla" then Mount="Flange"


FS(1)UnS(1)


UnS(2)


FS(3)UnS(3)


FS(4)UnS(4)



GS(7) = Viscosity

FS(7)UnS(7)


FS(8)UnS(8)

GS(9) = Density

FS(9)UnS(9)


FS(10)UnS(10)


UnS(11)

GS(12) = Annubar Model number


FS(13)UnS(13)


UnS(14)


FS(15)UnS(15)


FS(1)UnS(1)


FS(4)UnS(4)

SDS(2) =

Instrucalc IV

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Transcript of Instrucalc IV