GOST Compressibility Program€¦ · The GOST Compressibility program enables a FloBoss 103 to calculate compressibility and create and store historical values using the GOST 30319-96

Flow Computer Division

GOST Compressibility Program (For the FloBoss 103)

User Manual

(QER 05Q040)

D301832X012

Form A6193

July 2006

GOST Compressibility Program User Manual

Revised Jul-06 ii

Revision Tracking Sheet

July 2006

This manual may be revised periodically to incorporate new or updated information. The revision date of each page appears at the bottom of the page opposite the page number. A change in revision date to any page also changes the date of the manual that appears on the front cover. Listed below is the revision date of each page (if applicable):

Page Revision All pages Jul-06 All pages Oct-05

FloBoss and ROCLINK are marks of one of the Emerson Process Management companies. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their respective owners.

Fisher Controls International, LLC. 2005-2006. All rights reserved. Printed in the U.S.A. www.EmersonProcess.com/flow While this information is presented in good faith and believed to be accurate, Fisher Controls does not guarantee satisfactory results from reliance upon such information. Nothing contained herein is to be construed as a warranty or guarantee, express or implied, regarding the performance, merchantability, fitness or any other matter with respect to the products, nor as a recommendation to use any product or process in conflict with any patent. Fisher Controls reserves the right, without notice, to alter or improve the designs or specifications of the products described herein.


Revised Jul-06 iii

Table of Contents

Page

1 INTRODUCTION ................................................................................................................................. 1 1.1 Scope and Organization ........................................................................................................... 1 1.2 Product Overview .................................................................................................................... 1 1.3 Program Requirements ............................................................................................................. 2

2 INSTALLATION .................................................................................................................................. 3 2.1 Downloading the Program ....................................................................................................... 3

3 CONFIGURATION ............................................................................................................................... 7 3.1 Device Information Screen ...................................................................................................... 7 3.2 Meter Setup Screen – Gas Quality Tab .................................................................................... 8 3.3 Meter Setup Screen – Advanced Tab ....................................................................................... 9 3.4 GOST Properties Data Screen ............................................................................................... 10

3.4.1 GOST Properties Data Screen – Setup Tab ............................................................ 12 3.4.2 GOST Properties Data Screen – Calculated Results Tab ....................................... 16

3.5 Saving the Configuration ....................................................................................................... 18

4 REFERENCE ....................................................................................................................................... 20 4.1 GOST Compressibilities Property Task Limits of Use.......................................................... 20 4.2 Point Type 30: GOST Compressibility .................................................................................. 21


Revised Jul-06 1

1 INTRODUCTION 1.1 Scope and Organization This document serves as the user manual for the GOST Compressibility User Program (QER 05Q040), which is intended for use in a FloBoss™ 103. This manual describes how to download and configure this program (referred to as the “GOST Compressibility program” or “the program” throughout the rest of this manual). You access and configure this program using ROCLINK 800 Configuration Software (version 1.60 or greater) loaded on an IBM-compatible personal computer running Windows 98, NT 4.0 (with Service Pack 6), 2000 (with Service Pack 2), or XP. The sections in this manual provide information in a sequence appropriate for first-time users. Once you become familiar with the procedures and the software running in a FloBoss 103, the manual becomes a reference tool. This manual has the following major sections:

Section 1 – Introduction Section 2 – Installation Section 3 – Configuration Section 4 – Reference

This manual assumes that you are familiar with the FloBoss unit and its configuration. For more information, refer to the FloBoss 103 and 104 Flow Managers Instruction Manual (Form A6114) or the ROCLINK 800 Configuration Software User Manual (Form A6121). 1.2 Product Overview The GOST Compressibility program enables a FloBoss 103 to calculate compressibility and create and store historical values using the GOST 30319-96 (compressibility) standard. This program replaces the AGA8 compressibility calculation. It uses AGA structures where possible and provides a program-specific GOST Properties Data screen (see Figure 12) for entering additional program-specific parameters. With the program installed, the FloBoss 103 performs—at a scan period you define—a GOST 30319 compressibility calculation. The GOST compressibility calculation provides a value for gas compressibility at flowing conditions and base conditions. (The fluids and composition ranges for which the program is designed are natural gas and other related hydrocarbons, as defined in GOST 30319.2-96.) You configure the program using (where possible) the AGA interface and a program-specific GOST Properties Data screen. You retrieve calculated values through the same screens. The program supports a choice of three algorithms:

VNIC (for natural gas density 0.668 to 1.00 kg/m3) NX19 (for natural gas density 0.668 to 0.70 kg/m3) GERG-91 (for hydrogen sulfide free gas density 0.668 to 0.70 kg/m3)

VNIC requires the full gas composition. NX19 and GERG-91 require N2, CO2, and density at contract conditions.


Revised Jul-06 2

Refer to GOST 30319.1, GOST 30319.2, and GOST 30319-3 for specific details on the compressibility calculations and equations. 1.3 Program Requirements You download the GOST Compressibility program to—and then run it from—the Flash and RAM memory on the FloBoss 103. The GOST Compressibility program is compatible only with firmware version 2.12 (or greater) of the FloBoss 103. Download and configure the program using the ROCLINK 800 Configuration software (version 1.60 or greater). The downloadable program is: File Name Unit Task Code Data UDPs

GostProperties.bin FloBoss 103 User 2 7B0000-BFFFF 470000-470FFF 30

Note: You must connect a PC to the FloBoss unit’s LOI port before starting the download. For information on viewing the memory allocation of user programs, refer to the ROCLINK 800 Configuration Software User Manual (Form A6121).


Revised Jul-06 3

2 INSTALLATION This section provides instructions for installing the GOST Compressibility program into FloBoss memory. Read Section 1.3 of this manual for program requirements. 2.1 Downloading the Program

This section provides instructions for installing the user program into FloBoss memory. To download the user program using ROCLINK 800 software:

1. Connect the FloBoss to your computer using the LOI port.

2. Start and logon to ROCLINK 800.

3. Select ROC > Direct Connect to connect to the FloBoss unit.

4. Select Utilities > User Program Administrator from the ROCLINK menu bar. The User Program Administrator screen displays (see Figure 1):

Figure 1. User Program Administrator

5. Click Browse in the Download User Program File frame. The Select User Program File screen displays (see Figure 2).

6. Select the path and user program file to download from the CD-ROM (program files are typically located in the Program Files folder on the CD-ROM). As Figure 2 shows, the screen lists all valid user program files with the .BIN extension:


Revised Jul-06 4

Figure 2. Select User Program File

7. Click Open to select the program file. The User Program Administrator screen displays. As shown in Figure 3, note that the Download User Program File frame identifies the selected program and that the Download & Start button is active:



Revised Jul-06 5

8. Click Download & Start to begin loading the selected programs. The following message displays:

Figure 4. Confirm Download

9. Click Yes to begin the download. During the download, the program performs a Warm Start, creates an event in the Event Log, and—when the download completes—displays the following message:

Figure 5. ROCLINK 800 Download Confirmation

10. Click OK. The User Program Administrator screen displays (see Figure 6). Note that:

The User Programs Installed in Device frame identifies the loaded program. The Status field in that frame shows the device status as “ON” (indicating a successful Warm

Start). The Memory Usage frame indicates the memory the program uses.


Revised Jul-06 6


11. Click Close. The ROCLINK 800 screen displays and the download is complete.

Figure 7. ROCLINK 800


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3 CONFIGURATION

After you have loaded the GOST Compressibility program, you configure it using the ROCLINK 800 software. To do this, you use two standard ROCLINK 800 screens (Device Information and Meter Setup) and one program-specific screen (GOST Properties Data):

Use the Device Information to select Metric engineering units.

Use the Gas Quality and Advanced tabs on the Meter Setup screen to identify parameters affected by the GOST compressibility program.

Use the GOST Properties Data screen to set the program-specific parameters.

3.1 Device Information Screen

Use this screen to review the default units.

1. From the ROCLINK 800 screen, select ROC > Information. The Device Information screen displays.

Figure 8. Device Information

2. Review—and change as necessary—the value in the following field: Field Description

Units Sets the engineering units the program uses. Metric is the required value for this program.

3. Click Apply if you changed the value in this field.

4. Click OK to return to the ROCLINK 800 screen.


Revised Jul-06 8

3.2 Meter Setup Screen – Gas Quality Tab

Use the Gas Quality tab on the Meter Setup screen to provide values for the VNIC gas compressibility and density calculations.

Note: Complete this screen only if you intend to use the VNIC algorithm. Otherwise, proceed to section 3.3 to complete the Advanced tab, which affects all compressibility algorithms.

1. From the ROCLINK 800 screen, select Meter > Setup. The Meter Setup screen displays.

2. Select the Gas Quality tab.

Figure 9. Meter Setup Gas Quality Tab

3. Review—and change as necessary—the content of the following fields: Field Description

Nitrogen through Hydrogen

Sets, by mole percentage, the amount of a particular gas in the total gas mixture. Default values are 96% Methane, 3% Ethane, and 1% Nitrogen. The program maintains a running total of all percentages and displays that total in the Total Mole % field.

Note: If your total does not equal 100%, the program adjusts the Methane value to meet that 100%.

Log Methane Adjust Indicates whether the program logs the Methane adjustment event. The default is Enabled; click Disabled to prevent the system from logging the event.

4. Click Apply to save the changes. Go to Section 3.3.


Revised Jul-06 9

3.3 Meter Setup Screen – Advanced Tab

Use the Advanced tab on the Meter Setup screen to identify base pressure, base temperature, and pressure tap type and location the program uses to calculate absolute pressure.

In order to provide program-specific options, the GOST Compressibility program overrides the FPV Method parameters on the Advanced tab. Changing the FPV on this screen has no effect on the compressibility calculations.

Additionally, the GOST program now calculates two parameters—Viscosity and Specific Heat Ratio—that you previously entered.

To access this screen:

1. Select the Advanced tab from the Meter Setup screen.

Figure 10. Meter Setup Advanced Tab

2. Review—and change as necessary—the content of the following fields: Field Description

Atmospheric Pressure

Indicates how the program calculates atmospheric pressure. Valid values are Calculate (use other parameters for the calculation) or Enter (use specific entered values for the calculation).

Note: If you click Enter, you must also provide a value (in kPa) in the associated field.

Base Pressure Identifies, in kPa, the base pressure for the compressibility calculation.

Base Temperature Identifies, in degrees Centigrade, the base temperature for the compressibility calculation.

Pressure Tap Identifies the type and location of the pressure tap. Click the appropriate radio buttons.


Revised Jul-06 10

3. Click Apply to save the changes. Go to Section 3.4.

3.4 GOST Properties Data Screen

The GOST Properties Data screen enables you to enter program-specific calculation parameters. It also displays calculated values for GOST compressibility.

To access this screen:

1. Click User Program > GOST Properties > Display #30, GOST Properties Data from the ROCLINK configuration tree:

Figure 11. ROCLINK 800

2. Double-click #1. The GOST Properties Data screen displays (see Figure 12):


Revised Jul-06 11

Figure 12. GOST Properties Data

The GOST Properties Data screen has two tabs, Setup and Calculated Results. You use the Setup tab to configure the GOST program and the Calculated Results tab to view calculated GOST results.


Revised Jul-06 12

3.4.1 GOST Properties Data Screen – Setup Tab

The Setup tab displays when you first access the GOST Properties Data screen. Use it to define basic program parameters.

Figure 13. GOST Properties Data Setup Tab

1. Complete the screen fields based on your organization’s requirements. Field Description

Point Number Identifies the iteration (“logical”) of this screen. 1 is the only valid value, since the FloBoss 103 permits only one meter run.

Limit Check Enables the GOST Compressibility program to use limits of use checks on the process data the compressibility calculations define. Refer to section 4.1 for the specific limit values.

Note: If you enable limit checks but do not satisfy them, the program raises an alarm and halts all calculations.

Softpt Enable Enables a host to access data from a softpoint if it cannot access the data through other means. Valid values are 0 (disable the access) or 1 through 16 (enable the access and indicate the softpoint to use).

For VNIC, enabling softpoints activates the following datapoints:

1 Contract (Base) Compressibility (Zb)

2 Flow Compressibility (Zf)

3 Compressibility Coefficient (K)

4 Reduced Density Iterations


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Field Description

Softpt Enable (cont.) 5 PfAvg (MPa)

6 TfAvg (K)

7 Pseudo Density (Ropk)

8 Gas Constant (R)

9 Reduced Pressure (Pp)

10 Initial Molar Density (rom0)

11 Iterated Molar Density (rom)

12 Molecular Weight

13 In Use Base Density (kg/m3)

17 Flowing Density (kg/m3)

18 Specific Heat Ratio

19 Dynamic Viscosity (uPa.s)

20 Velocity of Sound (m/s)

For GERG-91, enabling softpoints activates the following datapoints:




4 Molar Fraction of Equivalent Hydrocarbon

5 A0

6 A1

7 A2

8 Me

9 B

10 Bm

11 Cm





For NX19, enabling softpoints activates the following datapoints:




4 Ta

5 Ta2

6 Pa


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Field Description

Softpt Enable (cont.) 7 dTa2

8 musor

9 mus_i

10 mus_j

11 F

12 Q1

13 Q0

14 fB1

15 fB0

16 fB2





Error Code This read-only field shows any errors the program may have encountered during calculations. Most errors occur as a result of failed input data when limit checking is enabled. The program raises an alarm to indicate an error condition. For NX-19 or GERG-91, possible error codes include:

0 OK – No calc error or limit encountered

102 Pressure Low

103 Pressure High

104 Temperature Low

105 Temperature High

106 Base Density Low

107 Base Density High

108 Carbon Dioxide Low (<0%)

109 Carbon Dioxide High (>15%)

110 Nitrogen Low (<0%)

111 Nitrogen High (>15%)

For VNIC only, possible error codes include:

112 Methane Low (<65%)

113 Methane High (>100%)

114 Ethane Low (<0%)

115 Ethane High (>15%)

116 Propane Low (<0%)

117 Propane High (>3.5%)

118 Butane Low (<0%)


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Field Description

119 Butane High (>1.5%)

120 Hydrogen Sulphide Low (<0%)

121 Hydrogen Sulphide High (>30%)

122 Other Components Low (<0%)

123 Other Components High (>1%)

Compressibility Calculation

Selects the compressibility calculation the program uses. VNIC requires the full gas composition. GERG-91 and NX19 require N2, CO2, and density at base conditions. GERG-91 has been modified for base temperature 20°C.

VNIC For natural gas density 0.668 to 1.00 kg/m3 Temperature 270 to 340°K (–3.15 to 66.85°C) Pressure 0 to 12 MPa (–1.0325 to 118.98675 barg)

GERG-91 For hydrogen sulfide free gas density 0.668 to 0.70 kg/m3 Temperature 250 to 330°K (–23.15 to 56.85°C) Pressure 0 to 12 MPa (–1.0325 to 118.98675 barg)

NX19 Mod For natural gas density 0.668 to 0.70 kg/m3 Temperature 250 to 290°K (–23.15 to 16.85°C) Pressure 0 to 3 MPa (–1.0325 to 28.98675 barg)

Force Recalculation Forces the program to immediately execute the compressibility calculations rather than waiting for the regular re-calculation period. Select Set to immediately execute the program calculations. Clear indicates the calculations occur during the regular re-calculation period.

Note: After you change data on this screen, you must force calculations in order to re-calculate compressibility.

Base Density Sets (in kg/m3 at 20°C and 1.01325 bara) the base density value the program uses with GERG-91 and NX19 Mod compressibility calculations.

Note: This field is available only if you selected either GERG-91 or NX19 as a compressibility calculation. VNIC calculates its own value.

N2 Content Sets, as a mole percentage, the nitrogen content for the GERG-91 or NX19 compressibility calculation.

Note: This field is available only if you selected either GERG-91 or NX19 as a compressibility calculation. For VNIC, the program reads this value from the Gas Quality tab on the Meter Setup screen.

CO2 Content Sets, as a mole percentage, the carbon dioxide content for the GERG-91 or NX19 compressibility calculation.

Note: This field is available only if you selected either GERG-91 or NX19 as a compressibility calculation. For VNIC, the program reads this value from the Gas Quality tab on the Meter Setup screen.

2. Click Apply to save any changes you have made to this screen.

3. Proceed to section 3.4.2 to review calculated GOST results.


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3.4.2 GOST Properties Data Screen – Calculated Results Tab

The Calculated Results tab displays calculated GOST values. To access this screen:

1. Select the Calculated Results tab from the GOST Properties Data screen.

Figure 13. GOST Properties Data Setup Tab

2. Review the screen’s contents. Field Description

Point Number Identifies the iteration (“logical”) of this screen. 1 is the only valid value, since the FloBoss 103 permits only one meter run.

Base Pressure This read-only field shows the base pressure, as entered on the Meter Setup screen’s Advanced tab.

Base Temp This read-only field shows the base temperature, as entered on the Meter Setup screen’s Advanced tab.

Flow Pressure This read-only field shows the pressure at which the program calculates flowing compressibility.

Flow Temp This read-only field shows the temperature at which the program calculates the flowing compressibility.

Base Compressibility This read-only field shows the gas compressibility calculated at base conditions (20°C and 1.01325 bara) (Zb).

Flow Compressibility This read-only field shows the gas compressibility calculated at flowing conditions (Zf).

Compress Coeff (K) This read-only field shows the gas compressibility coefficient (K = Zf / Zb).


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Field Description

Base Density This read-only field shows the base density value the program uses with GERG-91 and NX19 Mod compressibility calculations.

Note: VNIC calculates its own value.

Flow Density This read-only field shows the gas density calculated at flowing conditions.

Isentropic Exp This read-only field shows the calculated isentropic exponent (specific heat ratio) of the fluid at flowing conditions.

Viscosity This read-only field shows the calculated viscosity of the fluid at flowing conditions.

Speed of Sound This read-only field shows the velocity of sound in meters per second. The program uses this value only for diagnostic purposes.

3. Click Close to close this screen.

4. Proceed to section 3.5 to save the configuration.


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3.5 Saving the Configuration

Whenever you modify or change the configuration, save the final configuration to memory. To save the configuration:

1. Select ROC > Flags on the ROCLINK 800 menu bar. The Flags screen displays:

Figure 13. Flags

2. Click Save Configuration. A verification message displays:

Figure 14. Save Verification


Revised Jul-06 19

3. Click Yes. When the save process completes, a confirmation message displays:

Figure 15. Confirmation

Note: Depending on the size and complexity of the user program, this process may take several minutes. When the process ends, the Status field on the Flags screen displays Completed.

4. Click Update on the Flags screen. This completes the process of saving your new configuration.

Note: For archive purposes, you should also save this configuration to your PC’s hard drive or a removable media (such as a diskette or a flash drive) using the File > Save Configuration option on the ROCLINK 800 menu bar.


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4 REFERENCE

This section provides additional information related to the GOST program.

4.1 GOST Compressibilities Property Task Limits of Use

The GOST Compressibility calculations are valid for the following conditions. You enable checks by selecting the Limit Check checkbox on the GOST Properties Data screen’s Setup tab: VNIC

12.0 MPa Pressure (p) 0.01 MPa 340 K Temperature (t) 270 K 15.0% Carbon Dioxide (CO2) 0.0% 15.0% Nitrogen (N2) 0.0%

100.0% Methane (CH4) 65% 15.0% Ethane (C2H6) 0.0%

3.5% Propane (C3H8) 0.0% 1.5% Butane (C4H10) 0.0%

30.0% Hydrogen Sulfide (H2S) 0.0% 1.0% Other Components 0.0%

GERG-91

12.0 MPa Pressure (p) 0.01 MPa 330 K Temperature (t) 250 K

0.70 kg/m3 Base Density 0.668 kg/m3 15.0% Carbon Dioxide (CO2) 0.0% 15.0% Nitrogen (N2) 0.0%

NX19

3.0 MPa Pressure (p) 0.01 MPa 290 K Temperature (t) 250 K

0.70 kg/m3 Base Density 0.668 kg/m3 15.0% Carbon Dioxide (CO2) 0.0% 15.0% Nitrogen (N2) 0.0%


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4.2 Point Type 30: GOST Compressibility Point type 30 holds local data the GOST Compressibility program uses. The program maintains one logical (iteration) of this point type, and saves point type 30 to internal configuration memory.

Parm #

Name Access Data Type

Range Default Version Description of functionality and meaning of values

0 Calculation Type R/O AC10 All ASCII Char 'VNIC' 1.00 Text string identifying calculation in use 1 Compress Calc (0-2) R/W UINT8 0-2 0 1.00 0: VNIC

1: GERG-91 2: NX19

2 Base Compressibility R/O Float 01 1 1.00 Calculated value (Zb) 3 Flowing Compressibility R/O Float 01 1 1.00 Calculated value (Zf) 4 Compressibility Coeff (K) R/O Float 01 1 1.00 = Zf / Zb 5 Base Density (kg/m3) R/W Float 01000.0 1 1.00 Calculated by VNIC; entered for GERG & NX19 6 Flowing Density (kg/m3) R/O Float 01000.0 1 1.00 Calculated value 7 Force Recalc = 1 R/W UINT8 01 0 1.00 Forces the calculations to run immediately 8 Softpoint Enable R/W UINT8 016 0 1.00 Enter softpoint no. to show internal calc values 9 LimCheck (1=Yes,0=No) R/W UINT8 01 1 1.00 Enable/Disable the input data checking

10 Base Press (bara) R/O Float 0120 1.01325 1.00 Converted input value used by calculation 11 Base Temp ('C) R/O Float -2570 15 1.00 Converted input value used by calculation 12 Flowing Press (bara) R/O Float 0120 1.01325 1.00 Converted input value used by calculation 13 Flowing Temp ('C) R/O Float -2570 15 1.00 Converted input value used by calculation 14 Speed of Sound (m/s) R/O Float 01 0 1.00 Calculated value 15 Error Code R/O UINT16 0100 0 1.00 Indication of why the calculation is failing


Revised Jul-06 22

If you have comments or questions regarding this manual, please direct them to your local sales representative or contact: Emerson Process Management Flow Computer Division Marshalltown, Iowa 50158 USA Houston, TX 77065 USA Pickering, North Yorkshire UK Y018 7JA Website: www.EmersonProcess.com/flow

Documents

GOST Compressibility Program€¦ · The GOST Compressibility program enables a FloBoss 103 to calculate compressibility and create and store historical values using the GOST 30319-96