seal calculationiom.invensys.com/en/publishingimages/brands/foxboro… · xls file · web...

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Customer: SNC-Lavalin Legend:Customer Site: Project Rhourde Nouss QH formulasInstrument Tag Number: none pick list

data entryPressure or Level Measurement Using IASPT Transmitters With Pressure SealDetermine calibrated range (for level) and estimate performance

EGU Distance Temp.Measurement Engineering Units mmH2O Meters Deg CMeasurement Range DataApplication Pressure (absolute or gauge)Enter Upper Range Value 6000 mmH2OEnter Lower Range Value 0 mmH2OVertical distance between sensor and seal, 0 Meters

1 0.9072

Process Temperature Range, deg C High sideMaximum 300 Max temperature exceeds fluid capability. Select another fluid

Normal 250Minimum 250

Ambient Temperature Range, deg C High sideMaximum 40

Normal (or temp. when xmtr is zeroed) 10Minimum -35

ConfigurationHigh side Seal Type and Size Dimensional Print

Capillary Length, ft 0 High side PSFLT-.3, Flush 3" direct conn. Flange mount seal dp_020-342_b.pdfFill Fluid DC200, 3CSTCapillary Internal Diameter, inches 0.027 Linls to Dimensional PrintsTransmitter IDP10Span Code C

Results BelowLegend:formulas

Fluid Vapor pressure @ max. temp. pick list1284.89392 mm Hg, abs. data entry

Calibrated Range: 840 in H2ONotes: mmH2O 0 0

Nominal specific gravity of meas. Fluid, GL

Specific gravity of seal fill fluid, GS

pss_2a-1z11a_a.pdf

PIC W35FF, Flush Mount seal for 3" flange connection, direct connected to IDP10, IGP20

The minimum process pressure must be above the fill fluids vapor pressure at the maximum temperature.

HW @ min. level, or LRV,

B16

Fill fluid SG is calculated at the normal ambient temp. value entered below.

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Customer: SNC-Lavalin Legend:mmH2O 6000 ###

Performance Estimates:Temperature effects from normal process and ambient temperatuesto the respective maximum and minimum temperatures.

Process Temp. Effect Ambient Temp. Effectfor given temp. range for given temp. range chg. over distance d

mmH2O % of Span mmH2O % of Span mmH2O % of Span mmH2O % of SpanTo Max. Temp 15.19 0.25 3.15 0.05 0.00 0.00 18.34 0.31To Min. Temp 0.00 0.00 -4.73 -0.08 0.00 0.00 -4.73 -0.08

Response Time Estimates:

Ambient Temp, deg C -35 10 4090% response time, seconds 0.00 0.00 0.00Time constant, seconds 0.00 0.00 0.00

Estimates are for 316ss diaphragms - other materials may have ambient and process temp. errors as much as 3X greater.

HW @ max. level, or URV,

Head Effect for GS Total Seal SystemTemp. Effect

Response values are calculated using nominal values for capillary ID and fluid viscosity. Actual times could be as much as 2 X greater or 1/2 X less than shown because of tolerances for capillary ID & viscosity

Seal Selection Summary

Customer SNC-LavalinSite Project Rhourde Nouss QHInstrument Tag number none

Selected Configuration

Transmitter IDP10Span Code CFill Fluid DC200, 3CSTCapillary Length, ft 0Capillary Internal Diameter, inches 0.027Seal Selected PSFLT-.3, Flush 3" direct conn. Flange mount seal


Measurement Range Lower Range Value 0 mmH2OUpper Range Value 6000 mmH2O

Fluid Vapor pressure @ max. temp. 1284.8939 mm Hg, abs.

Warnings:Max temperature exceeds fluid capability. Select another fluid



Process Conditions and Effects on Performance Output ShiftProcess Temperature Range, deg C mmH2O % of SpanMaximum 300 15.19 0.25Normal 250 Reference ReferenceMinimum 250 0.00 0.00

Ambient Temperature Range, deg C mmH2O % of SpanMaximum 40 3.15 0.05Normal (or temp. when xmtr is zeroed) 10 Reference ReferenceMinimum -35 -4.73 -0.08

Head Effect From Fill Fluid Density ChangeVertical distance between sensor and seal, 0Meters mmH2O % of SpanMaximum 40 0.00 0.00Normal (or temp. when xmtr is zeroed) 10 Reference ReferenceMinimum -35 0.00 0.00

Total Seal SystemTemp. Effect mmH2O % of SpanMax. process & ambient 18.34 0.31Normal operating temperatures Reference ReferenceMin. process & ambient -4.73 -0.08

Response Time Estimates:Ambient Temp, deg C

-35 0.00 0.0010 0.00 0.0040 0.00 0.00

Seal Displacement at Hot and Cold Temperature Extremes

Seal Displacement, Hot, in^3 0.057Seal Displacement, Cold, in^3 , incl. full scale stroke 0.038Max. positive (hot) displacement for seal selected, in^3 0.29Max. negative (cold) displacement for seal selected, in^3 -0.1

90% response time, seconds

Time constant, seconds

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Pressure and Level Measurement Using an IASPT DP Transmitter With Pressure Seal(s)Determine calibrated range (for level) and estimate performance

EGU Distance Temp.Measurement Engineering Units mmH2O mm Deg CMeasurement Range DataApplication Level, Closed TankLiquid Level Span, X 6000 mmLiquid Level Offset, Y 0 mm Legend:Vertical distance between seals, d, 0 mm formulas

1 pick list0.9072 data entry

Process Temperature Range, deg C High side Low SideMaximum 300 300 Temperature exceeds fluid capability. Try another fluid or for assistance contact Foxboro

Normal 200 200Minimum 200 200

Ambient Temperature Range, deg C High side Low SideMaximum 40 40

Normal (or temp. when xmtr is zeroed) 10 10Minimum -35 -35

ConfigurationHigh side Low Side Seal Type and Size Dimensional Print

Capillary Length, ft 0 25 High side PSFLT-.3, Flush 3" direct conn. Flange mount seal dp_020-342_b.pdfFill Fluid DC200, 3CSTCapillary Internal Diameter, inches 0.027Transmitter IDP10Span Code D Dimensional Print

Low side PSFPS-.3, 3" Flush mount (pancake) remote seal dp_020-343_b.pdf

Results Below

Fluid Vapor pressure @ max. temp. Legend: Linls to Dimensional Prints1284.89392 mm Hg, abs. formulas

pick listdata entry

Calibrated Range: 8400 in H2ONotes: mmH2O 0 0

mmH2O 6000 ###

Performance Estimates:Temperature effects from normal process and ambient temperatuesto the respective maximum and minimum temperatures.

Process Temp. Effect Ambient Temp. Effectfor given temp. range for given temp. range chg. over distance d

mmH2O % of Span mmH2O % of Span mmH2O % of Span mmH2O % of Span +/- mmH2OTo Max. Temp 1.08 0.02 -8.88 -0.15 0.00 0.00 -7.79 -0.13 8.48To Min. Temp 0.00 0.00 13.32 0.22 0.00 0.00 13.32 0.22 3.61

* Tolarance for process and ambient temp. effects due to residual variation in seal characteristics.Response Time Estimates:

Ambient Temp, deg C -35 10 4090% response time, seconds 0.31 0.09 0.05Time constant, seconds 0.13 0.04 0.02

Nominal specific gravity of meas. Fluid, GL

Specific gravity of seal fill fluid, GS

pss_2a-1z11a_a.pdf


PIC W35FP, Flush Pancake (paddle) seal for 3" flange connection. Previously known as the MP type seal. Best price/performance selection.


dp_020-342_b.pdfdp_020-343_b.pdfdp_020-345_a.pdfdp_020-346_a.pdf

HW @ min. level, or LRV, dp_020-347_a.pdf

Estimates are for 316ss diaphragms - other materials may have ambient and process temp. errors as much as 3X greater.

HW @ max. level, or URV, dp_020-348_a.pdfdp_020-349_a.pdfdp_020-350_a.pdfdp_020-351_a.pdf

Head Effect for GS Total Seal SystemTemp. Effect

Tolerance of Estimate*

Response values are calculated using nominal values for capillary ID and fluid viscosity. Actual times could be as much as 2 X greater or 1/2 X less than shown because of tolerances for capillary ID & viscosity

B16

Fill fluid SG is calculated at the normal ambient temp. value entered below.


Customer SNC-LavalinSite Project Rhourde Nouss QHInstrument Tag number none

Selected Configuration

Transmitter IDP10Span Code DFill Fluid DC200, 3CSTHigh Side Capillary Length, ft 0Low Side Capillary Length, ft 25Capillary Internal Diameter, inches 0.027Seal Selected, High Side PSFLT-.3, Flush 3" direct conn. Flange mount sealPIC W35FF, Flush Mount seal for 3" flange connection, direct connected to IDP10, IGP20

Seal Selected, Low Side PSFPS-.3, 3" Flush mount (pancake) remote seal

Measurement Range Lower Range Value 0 mmH2OUpper Range Value 6000 mmH2O

1284.8939 mm Hg, abs.

Warnings:At maximum process temperature: Temperature exceeds fluid capability. Try another fluid or for assistance contact FoxboroAt minimum process temperature:At maximum ambient temperature:At minimum ambient temperature:

PIC W35FP, Flush Pancake (paddle) seal for 3" flange connection. Previously known as the MP type seal. Best price/performance selection.

Seal fill fluid vapor pressure at maximum temperature



Process Conditions and Effects on Performance High Side Low Side Output ShiftProcess Temperature Range, deg C mmH2O % of Span

Maximum 300 300 1.08 0.02Normal 200 200 Reference Reference

Minimum 200 200 0.00 0.00

Ambient Temperature Range, deg C mmH2O % of SpanMaximum 40 40 -8.88 -0.15

Normal (or temp. when xmtr is zeroed) 10 10 Reference ReferenceMinimum -35 -35 13.32 0.22

Head Effect From Fill Fluid Density ChangeVertical distance between seals, d, 0mm mmH2O % of Span

To Maximum Ambient Temperature 0.00 0.00Normal (or temp. when xmtr is zeroed) Reference ReferenceTo Minimum Ambient Temperature 0.00 0.00

Tolerance of EstimatemmH2O % of Span +/- mmH2O

Max. process & ambient -7.79 -0.13 8.48Normal operating temperatures Reference Reference ReferenceMin. process & ambient 13.32 0.22 3.61

Response Time Estimates:Ambient Temp, deg C

-35 0.31 0.1310 0.09 0.0440 0.05 0.02

Seal Displacement at Hot and Cold Temperature ExtremesHigh side Low side

Seal Displacement, Hot, in^3 0.057 0.059Seal Displacement, Cold, in^3 , incl. full scale stroke 0.029 0.020

Max. positive (hot) displacement for seal selected, in^3 0.29 0.29Max. negative (cold) displacement for seal selected, in^3 -0.1 -0.12

Estimated Total Seal SystemTemperature Effect

90% response time, seconds

Time constant, seconds

Viscosity correction constantsConstants for vapor

Model Code Fill Fluid Thrmal xpan Constants for SG calc pressure calculation Temperature Rangesuffix m b A B Minimum Maximum

1 DC200, 10CST 0.0006 ### ### -0.0006 0.983 8.721047 3830.092 -40 4503 DC200, 3CST 0.000628 ### ### -0.0006 0.9372 8.63331 3165.506 -40 3008 DC550 0.00042 12634.45078249 7.97E-09 -0.00038 1.1 11.81275 6461.023 -40 5804 DC704 0.000486 ### ### -0.0005 1.1078 11.025 5570 32 5802 FC77 0.0008 ### ### -0.0014 1.877 8.0915 1928 -75 1807 Halocarbon, 4.2 0.00055 4799.561387933 0.0014713497 -0.0009 1.942 8.08 2625 -40 4006 Halocarbon, 6.3 0.00055 5418.016434141 0.00074970751 -0.0009 1.962 7.898 2586.62 -40 4005 Neobee M20 0.000513 4365.418994842 0.00300883089 -0.0004 0.9519 9.12E+00 3918.322 0 4009 Syltherm 800 0.0006 4117.924810096 0.00434935458 -0.0006 0.96 6.716326 1828.304 -40 450

Vapor pressure estimatelog p = A-(b/(t+273))

Solve for Coefficients A and B when vapor pressure is known at 2 temperatures

T low, C 40 0.002114164905 2.850989 coef B 133.322T hi, C 200 0.003194888179 0.875098 -1828.304 -0.000547 1000Vp@Tlow 7.5006375542 mm Hg coef A 6.716326 7.500638Vp@Thi 709.56031263 mm Hg 3.89E+00Coef B = 1828.3044178 1527.423638827 0.657349 4.543062Coef A = 6.716326352 -0.993374 0.101537

Note: Coeffecients are calculated in terms of degrees Kelvin.

Temperature Correction for Absolute Viscosity Andrades equation

0.5649720.534759

u1= 24369.4 0.030213u2= 133.5 0.000275

T1, F = -20.2 0.056498T2, F = 77 0.000514

7.9650137E-09 459.6712634.450782

Note: Coeffecients are calculated in terms of degrees Rankine. 1.00042*1.068

125133.5

in3/in3/degF BL AL

u = AL exp BL/T

From two known values of viscosity constants AL and BL can be determined

BL = (T1 * T2 * ln(u1/u2))/(T2 - T1)

AL = u1/exp (BL/T1)

AL =BL =

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