Supplement to User Manual - ENGLISH

Supplement to User Manual - ENGLISH

SUFLUXUS_HPIV1-0, 2011-08-23 27

Supplement to User Manual - ENGLISHFLUXUS HPI

FLUXUS HPI

FLUXUS HPI Supplement to User Manual - ENGLISH

28 SUFLUXUS_HPIV1-0, 2011-08-23

Table of Contents

1 Introduction ......................................................................................................................................................... 27

1.1 Functions of the FLUXUS HPI .............................................................................................................................. 27

1.2 Selection of the HPI Option ................................................................................................................................... 27

2 Functional Principle of the FLUXUS HPI ........................................................................................................... 28

2.1 Volumetric and Mass Flow Rate ........................................................................................................................... 28

2.2 Medium Identification (Multi Product) .................................................................................................................... 28

2.3 Sound Speed at TB (All Options) .......................................................................................................................... 29

2.4 Detection of Interfaces Between Media (All Options) ............................................................................................ 29

2.5 Density .................................................................................................................................................................. 30

3 Measurement Preparation .................................................................................................................................. 31

3.1 Installation and start-up of the transducers, probes and transmitter ..................................................................... 31

3.2 Activation of the Additional HPI Functions ............................................................................................................ 31

3.3 Setting the Units of Measurement ......................................................................................................................... 31

3.4 Parametrization of the Measuring Channels ......................................................................................................... 32

3.5 Parametrization of the Outputs ............................................................................................................................. 36

3.6 Definition the Output Options ................................................................................................................................ 38

4 HPI Settings ......................................................................................................................................................... 42

4.1 Activation of the Additional HPI Functions ............................................................................................................ 42

4.2 Selection of the Medium ........................................................................................................................................ 42

4.3 Selection of the HPI Quantity to be Used for the Output ....................................................................................... 43

5 Measurement ....................................................................................................................................................... 44

Supplement to User Manual - ENGLISH FLUXUS HPI

SUFLUXUS_HPIV1-0, 2011-08-23 29

Regarding this SupplementThis supplement has to be used together with the user manual of the ultrasonic flowmeterFLUXUS. Make sure you have read and understood this supplement, the user manual andthe safety instructions before using FLUXUS HPI.

Always observe the safety instructions!


1 IntroductionThe FLUXUS HPI is a flowmeter designed for the hydrocarbon processing industry (HPI). In addition to the flow measure-ment, the flowmeter has a number of additional functions and is available in the options Interface only, Single Product andMulti Product.

1.1 Functions of the FLUXUS HPIThe following functions are available:

* Note: Unlike the HPI options Single Product and Multi Product, the HPI option Interface only does not have any definedparameters for the media. However, if the different media have similar properties, a linear dependence of the density onthe sound speed can be stored in the transmitter. Therefore, besides the detection of interfaces between media and themeasurement of the volumetric flow rate, it is possible to additionally determine the density, the API density and themass flow rate.

1.2 Selection of the HPI OptionThe HPI option is selected according to the application and measuring task.

Example 1: A number of exactly defined media with different sound speeds are flowing in the pipe. The task is to identifythe flowing medium, measure the volumetric flow rate and calculate the standard volumetric flow rate in accor-dance with ASTM D1250, ASTM D4311 or TP25.HPI option: Multi Product

Example 2: A number of not exactly defined media and media mixtures, e.g. different gas mixtures, are flowing in the pipe.The task is to detect the interfaces between the media and to measure the volumetric flow rate.HPI option: Interface only

Example 3: One exactly defined medium, e.g. fuel oil, is flowing in the pipe. The task is to measure the volumetric flow rateand calculate the standard volumetric flow rate in accordance with ASTM D1250, ASTM D4311 or TP25.HPI option: Single product

Function Interface only Single Product Multi Productvolumetric flow and mass flow measurement x* x xcalculation of standard volumetric flow rate - for 1 medium for up to 13 mediamedium identification - - xcalculation of the sound speed at TB x x xdetection of interfaces between media x x xcalculation of the density from the sound speed x* - -output of the density at TB, according to the data set - x xcalculation of the specific gravity and the API gravity x* x x

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2 Functional Principle of the FLUXUS HPIIn the following, the physical quantities of the FLUXUS HPI and their calculation are described.

2.1 Volumetric and Mass Flow RateThe volumetric flow rate is measured using the transit time difference correlation principle. For a detailed description of themeasuring and calculation principle, see user manual UMFLUXUS.

The mass flow rate is calculated from the product of the volumetric flow rate and the density of the medium. With the HPIoption Interface only, the density is calculated from the sound speed of the medium (see section 2.5.1). With the HPI op-tions Single Product and Multi Product, the density is given according to the data sets stored in the transmitter.

2.1.1 Standard Volumetric Flow Rate (Single Product, Multi Product)

The standard volumetric flow rate B is calculated by mutiplying the measured operating volumetric flow rate m by thevolume correction factor VCF:

B = VCF . m

The volume correction factor describes the ratio of the volume of the medium at standard conditions (VB) and the volumeof the same amount of the medium at operating conditions (V):

VCF = VB/V

The volume correction factor is calculated in dependence from the temperature (and pressure, if necessary) from the me-dium data stored in the transmitter in accordance with the standards ASTM D1250, ASTM D4311 and TP25 (dependingon the application).

2.2 Medium Identification (Multi Product)If a number of consecutive media flow in the pipe, they can be identified with the measured sound speed. During the mea-surement, the sound speed, the temperature (and pressure, if necessary) are measured. The sound speed curves in de-pendence of the temperature (and pressure) of up to 13 media are stored in the transmitter. The measured sound speedcm is compared with the sound speeds of the stored media. The medium that matches the sound speed is identified (seeFig. 1).

Fig. 1: Medium identification

V· V·

V· V·

medium 1

medium 2

medium 3

cm

Tm T

c

aound speed curvesof the media

measuredsound speed

SUFLUXUS_HPIV1-0, 2011-08-23 31


2.3 Sound Speed at TB (All Options)The sound speed of hydrocarbons depends on the temperature of the medium. With the defined temperature dependenceof the sound speed, the sound speed cm measured at the operating temperature Tm is normalized to the sound speed cBat standard temperature TB (see Fig. 2).

2.4 Detection of Interfaces Between Media (All Options)Interfaces between consecutive media flowing in the pipe can be detected by using the sound speed at standard tempera-ture. During the measurement, the sound speed of the medium is continuously measured and normalized to the standardtemperature (Sonic ID). Because each medium has its own sound speed, the sound speed changes abruptly within ashort time during the transition between two different media. This change of the sound speed is identified as an interface(see Fig. 3).

Fig. 2: Calculation of the sound speed at TB

Fig. 3: Change of the sound speed during the transition between different media

cm

T

c

cB

TB Tm

dependence of the sound speed on the

temperature of the medium

medium 1 medium 2 medium 3

cB

absolute value of the rate of change(slope) of the sound speed

t

32 SUFLUXUS_HPIV1-0, 2011-08-23


2.5 DensityThe density of the medium can be used to calculate the mass flow rate.

2.5.1 Operating Density (Interface only)

The sound speed of a medium depends on its density. With the measured sound speed and the defined density depen-dence, the density of the medium is calculated (see Fig. 4) and used for further calculations.

2.5.2 Density at Standard Conditions (Single Product, Multi Product)

The transmitter contains a data set for different media and their sound speeds at standard conditions. If the medium flow-ing in the pipe is known or identified, it can be matched to a density at standard conditions which can be used for furthercalculations.

2.5.3 Specific Gravity d

The specific gravity d of a medium is the ratio of the density ρ of the medium to the density ρ0 of water:

d = ρ/ρ0

For the calculation of the density, the same value of the density ρ0 of water is used as for the calculation of the API densityof the medium.

2.5.4 API Gravity

The API gravity ρAPI of a medium is a physical quantity common in the oil industry. It describes the specific gravity of crudeoils compared to the specific gravity of water. The API gravity is calculated as follows:

ρAPI = 141.5/d - 131.5

The API gravity has the unit of measurement "° API". Water has the API gravity 10° API. Media with a higher specificgravity than water (e.g. heavy oil) have an API gravity of < 10° API, media with a lower specific gravity than water (e.g.light oil) have an API gravity of > 10° API.

Fig. 4: Calculation of the density

c

ρ

dependence of the

density and the sound speed

SUFLUXUS_HPIV1-0, 2011-08-23 33


3 Measurement Preparation

In the following, the preparation of the measurement for typical application examples of the 3 HPI options is described indetail. Most steps of the measurement preparation are the same with all options. The differences between the HPI optionsare described accordingly.

If the measurement has already been parametrized and only the HPI parameters are to be modified, see section 4.

Measurement preparation consists of the following steps:

• installation and start-up of the transducers, probes and the transmitter

• activation of the additional HPI functions

• setting the units of measurement to be used

• parametrization of the measuring channels (input of the pipe and medium parameters)

• parametrization of the calculation channel (to calculate the average of the measured values of the measuring channels)

• parametrization of the inputs for the temperature (and pressure, if necessary) measurement for the additional HPI func-tions

• parametrization of the outputs

• definition of the output options for the physical quantities and the HPI quantities

3.1 Installation and start-up of the transducers, probes and transmitterIn order to increase the reliabilty and precision of the measurement, two transducer pairs and two measuring channels areused. The installation and start-up of the transducers, probes and the transmitter is described in the user manual UM-FLUXUS. Observe the notes on the selection of the measuring point.

3.2 Activation of the Additional HPI Functions

3.3 Setting the Units of MeasurementIt is possible to set the units of measurement for the length, temperature, pressure, density, and kinematic viscosity:

Attention! Observe the Safety Instructions for the Use in Explosive Atmo-sphere (see document SIFLUXUS).

Select Special Funct.\SYSTEM settings\Measur-ing\HPI Measuring. Select on to activate the additionalHPI functions, off to deactivate the additional HPI func-tions and work in the normal measuring mode.

Press ENTER.

If off is selected, the transmitter will operate in the normalmeasuring mode. The HPI media will not be available inthe program branch Parameter. Only the media of thenormal measuring mode will be displayed.

If on is selected, the available HPI option will be displayed(here: Interface only).

Press ENTER.

Select Special Funct.\SYSTEM settings\Dia-logs/Menus. Press ENTER until Length unit is dis-played.

Select mm or inch as the unit of measurement for thelength.

Press ENTER.

Select °C or °F as the unit of measurement for the temper-ature.

Press ENTER.

Select bar or psi as the unit of measurement for the pres-sure.

Press ENTER.

Select yes if lb/ft3 is to be used as the unit of measure-ment for the density.

Press ENTER.

HPI Measuringoff >ON<

INFO:HPI-mode is Interface only

Length unit>[mm]< [inch]

Temperature>[°C]< [°F]

Pressure>[bar]< [psi]

Density [lb/ft3] no >YES<

34 SUFLUXUS_HPIV1-0, 2011-08-23


3.4 Parametrization of the Measuring ChannelsIn the following, the parametrization of the measuring point is described, using as an example a measurement with 2transducer pairs on 2 measuring channels. If the measurement is conducted using only one transducer pair, the measur-ing channel B and the calculation channel will not have to be parametrized.

The measuring channels are parametrized as follows:

Select g/cm3 or kg/m3 as the unit of measurement for thedensity.

Press ENTER.

This display will only be indicated if lb/ft3 has not beenselected as the unit of measurement for the density.

Select mm2/s or cSt as the unit of measurement for the ki-nematic viscosity.

Press ENTER.

Select the program branch Parameter.

Press ENTER.

Select measuring channel A.

Press ENTER.

Enter the outer pipe diameter.

Press ENTER.

An error message will be displayed if the entered parame-ter is outside of the range. The limit will be displayed.

example: upper limit 1 100 mm for the connected trans-ducers and for a pipe wall thickness of 50 mm

Enter the pipe wall thickness.

Press ENTER.

Select the pipe material.

If the material is not in the scroll list, select Other Mate-rial.

Press ENTER.

If Other Material is selected, the sound speed willhave to be entered. Enter the sound speed of the pipe ma-terial.

Press ENTER.

If the pipe has an inner lining, select yes.

Press ENTER.

If no is selected, the next parameter will be displayed.

Select the lining material.

If the material is not in the scroll list, select Other Mate-rial.

Press ENTER.

If Other Material is selected, the sound speed willhave to be entered. Enter the sound speed of the liningmaterial.

Press ENTER.

Enter the thickness of the liner.

Press ENTER.

Density unit g/cm3 >kg/m3<

Viscosity unit mm2/s >cSt<

>PAR<mea opt sfParameter

Parameter ↕for Channel A:

Outer Diameter100.0 mm

Outer Diameter1100.0 MAXIMAL

Wall Thickness3.0 mm

Pipe Material ↕Carbon Steel

c-Material3230.0 m/s

Liningno >YES<

Lining ↕Bitumen

c-Material3200.0 m/s

Liner Thickness3.0 mm

SUFLUXUS_HPIV1-0, 2011-08-23 35


Enter the roughness of the selected pipe or liner material.

Change the value according to the condition of the innerpipe wall.

Press ENTER.

Select the medium. During the parametrization of the HPImeasurement, only HPI media can be selected.

Press ENTER.

The list item allLiquids (the designation can vary ac-cording to the configuration) is available with the HPI op-tions Interface only and Multi Product. It contains thesound speed/density dependence of all the HPI mediastored in the transmitter.

Interface only: The flow measurement and the calculationof the HPI quantities of the current medium and the detec-tion of interfaces between the media are available.

Multi Product: The flow measurement and the calculationof the HPI quantities of the current medium, the detectionof interfaces between the media and the identification ofmedia are available.

An individual medium (here: Asphalt 980) can be selectedinstead of allLiquids. Individual media are availablewith the HPI options Single Product and Multi Product.

Single Product: If an individual medium is selected, theflow measurement and the calculation of the HPI quantitiesof the current medium will be available.

Multi Product: If an individual medium is selected, the flowmeasurement and the calculation of the HPI quantities ofthe current medium will be available. The identification ofmedia will be deactivated.

Enter the usual operating temperature of the medium. Thevalue must be within the operating temperature range ofthe transducers.

Press ENTER.

Enter the medium pressure.

Press ENTER.

Enter the medium pressure in the supply line.

Press ENTER.

The transducer type recognized by the transmitter is dis-played. Press ENTER to confirm the transducer type.

If the transducers are not connected via the sensor moduleSENSPROM, the transducer type will not be recognizedautomatically and will have to be selected manually. SelectStandard to use the standard transducer parametersstored in the transmitter.

Select Special Version to enter the transducer param-eters. The transducer parameters must be provided by themanufacturer.

Press ENTER.

Roughness0.4 mm

Medium ↕

Medium ↕allLiquids

Medium ↕Asphalt 980

Medium Temperat.20.0 C

Fluid pressure6.01 bar(a)

Inlet pressure6.01 bar(a)

Transducer Type↕Standard

36 SUFLUXUS_HPIV1-0, 2011-08-23


Repeat the steps for measuring channel B, if necessary.

3.4.1 Parameterization of the Calculation Channel

The calculation channel is used to calculate the average from the measured values of the measuring channels A and B. Ifthe transmitter has only one measuring channel, the calculation channel will not have to be parametrized.

3.4.2 Parametrization of the Inputs

For the additional HPI functions, it is necessary to measure the temperature (and pressure, if necessary) of the medium inaddition to the flow rate.

If the temperature is fed into the transmitter via the temperature input, the temperature input will be parametrized as fol-lows:


If the temperature is fed into the transmitter via the current input, the current input will be parametrized as follows:

If Special Version is selected, the 6 transducer param-eters specified by the manufacturer will have to be en-tered.

Press ENTER after each input.

If the transducer cable must be extended, enter the addi-tional cable length (e.g. between the junction box and thetransmitter).

Press ENTER.

Select the program branch Parameter. Select a calcula-tion channel (here: Y).

Press ENTER.

Select the calculation function A (+)/n B.

Press ENTER.

This message will be displayed after the parametrization ofthe calculation channel. The measured values of the calcu-lation channel will be valid if the measured values of atleast one of the measuring channels are valid. If only onemeasuring channel provides valid measured values, itsmeasured values will be used for the calculation channel.

Press ENTER.

Select in Special Funct.\SYSTEM settings\Proc.inputs the list item Link temperature. Press ENTER.

Select the list item No measuring.

Press ENTER.

Select the list item Input T1.

Press ENTER.


Press ENTER.


Press ENTER.

Select in Special Funct.\SYSTEM settings\ Proc.inputs the list item Define ext.meas..

Press ENTER.

Select From input I1.

Press ENTER.

Transd. Data 135.99

Additional cable65.0 m

Parameter ↕for Channel Y:

>ch1< FUNCT ch2↕ A (+)/n B

Y: is valid ifA: OR B: valid

Proc. inputs ↕Link temperature

A:T-Inlet ↕No measuring

A:T-Fluid/Outle↕Input T1

A:T(3) ↕No measuring


Proc. inputs ↕DEFINE EXT.MEAS.

Ext.meas.value ↕From input I1

SUFLUXUS_HPIV1-0, 2011-08-23 37


The pressure input is parametrized as follows (if necessary):

The medium temperature is assigned to the input I1 as follows (only if the medium temperature is fed into the transmittervia the current input):

Select Temperature.

Press ENTER.

Enter the min. value of the input signal (here: 4.00 mA,see technical data of the external measuring instrumentthat is to be connected).

Press ENTER.

Enter the max. value of the input signal (here: 20.00 mA,see technical data of the external measuring instrumentthat is to be connected).

Press ENTER.

Enter the value (here: 10.0 °C) that is to be assigned tothe min. value of the input signal (here: 4.0 mA).

Press ENTER.

Enter the value (here: 100.0 °C) that is to be assigned tothe max. value of the input signal (here: 20.0 mA).

Press ENTER.

Select in Special Funct.\SYSTEM settings\ Proc.inputs the list item Define ext.meas..

Press ENTER.

Select From input I2.

Press ENTER.

Select Pressure.

Press ENTER.

Enter the min. value of the input signal (here: 4.00 mA,see technical data of the external measuring instrumentthat is to be connected).

Press ENTER.

Enter the max. value of the input signal (here: 20.00 mA,see technical data of the external measuring instrumentthat is to be connected).

Press ENTER.

Enter the value (here: 1.0 bar) that is to be assigned tothe min. value of the input signal (here: 4.0 mA).

Press ENTER.

Enter the value (here: 12.0 bar) that is to be assigned tothe max. value of the input signal (here: 20.0 mA).

Press ENTER.

Select in Special Funct.\SYSTEM settings\ Proc.inputs the list item Link temperature.

Press ENTER.


Press ENTER.

I1:Input for ↕Temperature

I1:Sensor MIN4.00 mA

I1:Sensor MAX20.00 mA

I1:MIN(4.0mA)=10.0 C

I1:MAX(20.0mA)=100.0 C

Proc. inputs ↕Define ext.meas.

Ext.meas.value ↕From input I2

I1:Input for ↕Pressure

I1:Sensor MIN4.00 mA

I1:Sensor MAX20.00 mA

I1:MIN(4.0mA)=1.0 bar(g)

I1:MAX(20.0mA)=12.0 bar

Proc. inputs ↕Link temperature

A:T-Inlet ↕No measuring

38 SUFLUXUS_HPIV1-0, 2011-08-23



The medium pressure is assigned to the input I2 as follows:


3.5 Parametrization of the OutputsThe first current output of the transmitter is used for the output of the physical quantity defined in the output options. It isparametrized as follows:

Select the list item Input I1.

Press ENTER.


Press ENTER.


Press ENTER.

Select in Special Funct.\SYSTEM settings\ Proc.inputs the list item Linkage.

Press ENTER.


Press ENTER.

Select the list item Pressure.

Press ENTER.

Select Special Funct.\SYSTEM settings\Proc.outputs.

Press ENTER.

Select the output Current I1.

Press ENTER.

The scroll list contains all available outputs. A tick after alist item indicates that this output has already been in-stalled.

This display will be indicated if the output has not been in-stalled yet. Select yes.

Press ENTER.

If the output has already been installed, select no to recon-figure it or yes to uninstall the output and to return to theprevious menu item to select another output.

Press ENTER.

Select in the scroll list the calculation channel that hasbeen parametrized (here: Y).

Press ENTER.

Select the list item Measuring value.

Press ENTER.

Select the list item actual measure.

Press ENTER.

Select the output range (here: 4/20 mA).

Press ENTER.

A:T-Fluid/Outle↕Input I1



Proc. inputs ↕Linkage

Linkage ↕for Channel A

A:Pressure ↕With input I2

SYSTEM settings↕Proc. outputs

Install Output ↕Current I1 ()

I1 enableno >YES<

I1 disable>NO< yes

I1 Source chan.↕Channel Y:

I1 Source item ↕Measuring value

Measuring value↕actual measure

I1 Output range↕ 4/20 mA

SUFLUXUS_HPIV1-0, 2011-08-23 39


The function of the installed output can now be tested. Connect a multimeter to the installed output.

The second current output is used for the output of the HPI quantities

• Interface only and Multi Product: rate of change of the sound speed• Single Product: sound speed at TBand is parametrized as follows (example, other physical quantities are possible):

Select the list item Other value....

Press ENTER.

Enter the value that is to be used for the output in theevent of an error (here: 3.5 mA). It has to be within thelimits of the output.

The terminals for the connection of the output are dis-played (here: P1+ and P1- for the active current loop).

Press ENTER.

Note! The settings will be stored at the end of the dialog.

The current output is tested in the display. Enter a test val-ue (here: 10 mA). It has to be within the output range.Press ENTER.

If the multimeter displays the entered value, the outputfunctions correctly.

Select yes to repeat the test, no to return to SYSTEMsettings. Press ENTER.

Select Special Funct.\SYSTEM settings\Proc.outputs. Press ENTER.

Select the output Current I2. Press ENTER.

The scroll list contains all available outputs. A tick after alist item indicates that this output has already been in-stalled.

This display will be indicated if the output has not been in-stalled yet. Select yes. Press ENTER.

If the output has already been installed, select no to recon-figure it or yes to uninstall the output and to return to theprevious menu item to select another output. Press ENTER.

Select in the scroll list the calculation channel that hasbeen parametrized (here: Y). If no calculation channel hasbeen parametrized, select the measuring channel. PressENTER.

Select the list item HPI Values. Press ENTER.

Error-value ↕Other value...

Error-value3.5 mA

I1 active loopTerminal:P1+,P1-

I1:Output Test10 mA

I1= 10.0 mAAgain? no >YES<

SYSTEM settings↕Proc. outputs

Install Output ↕Current I2 ()

I1 enableno >YES<

I1 disable>NO< yes


I1 Source item ↕HPI Values

40 SUFLUXUS_HPIV1-0, 2011-08-23


3.6 Definition the Output OptionsExample: during the measurement, the physical quantities

• Interface only: flow velocity and volumetric flow rate

• Single Product and Multi Product: flow velocity and standard volumetric flow rate

are to be used for the output (example, other physical quantities are possible).

The output options of the measuring channels are parametrized as follows:

Select the HPI quantity that is to be used for the output.

• Interface only and Multi Product: Slope soundspeed (rate of change of the sound speed)

• Single Product: Sonic ID: (sound speed at TB)Depending on the HPI option and the application, the fol-lowing HPI quantities are available:• Specific gravity: specific gravity• API-value: API gravity• Density at BC: density at standard conditions• VCF-value: volume correction factor• Slope API-value: rate of change of the API gravity• Current liquid: number of the current liquid

Press ENTER.

Select the output range (here: 4/20 mA).

Press ENTER.

Select the list item Other value....

Press ENTER.

Enter the value used for the output in the event of an error(here: 3.5 mA). It has to be within the limits of the output.

The terminals for the connection of the output are dis-played (here: P1+ and P1- for the active current loop).

Press ENTER.

Select the program branch Output Options.

Press ENTER.


Press ENTER.

Select Flow Velocity as the physical quantity.

Press ENTER.

Select the unit of measurement that is to be used for theoutput of the flow velocity.

Press ENTER.

Select yes.

Press ENTER.

Select yes.

Press ENTER.

Enter the damping factor (here: 20 s).

Press ENTER.

HPI Values ↕Slope soundspeed

I1 Output range↕ 4/20 mA

Error-value ↕Other value...

Error-value3.5 mA

I1 active loopTerminal:P1+,P1-

par mea >OPT< sfOutput Options

Output Options ↕for Channel A:

Physic. Quant. ↕Flow Velocity

Velocity in: ↕m/s

Temperature I1no >YES<

Pressure I2no >YES<

Damping20 s

SUFLUXUS_HPIV1-0, 2011-08-23 41



The calculation channel is parametrized as follows:

Enter the damping factor for the change of rate (here: 20s). If 0 (zero) is entered, the change of rate will not bedamped.

Press ENTER.

The damping factor of the change of rate is used to im-prove the detection of interfaces between media. The cal-culation of the damping factor is described in section 3.6.1.

Select yes to activate the data logger, no to deactivate it.

Press ENTER.

Select yes to activate the online transmission of data, noto deactivate it.

Press ENTER.

Select yes to activate the current loop, no to deactivate it.

Press ENTER.

Select the program branch Output Options.

Press ENTER.

Select the calculation channel Y.

Press ENTER.

Select the physical quantity that is to be used for the out-put.

Interface only: Volume flow

Single Product and Multi Prioduct: Volumen(norm.)

Press ENTER.

Select the unit of measurement that is to be used for theoutput of the volumetric flow rate (here: bbl/h).

Press ENTER.

Enter the value 0 for the cut-off flow.

Press ENTER.

Enter the value 0 for the cut-off flow.

Press ENTER.

Enter the damping factor (here: 20 s).

Press ENTER.

Select yes to activate the data logger, no to deactivate it.

Press ENTER.

Select yes to activate the online transmission of data, noto deactivate it.

Press ENTER.

Select yes to activate the current loop.

Press ENTER.

Select sign if the sign of the measured values is to beconsidered for the output. Select absolut if the sign is notto be considered.

Press ENTER.

Slope damping20 s

Store Meas.Data>NO< yes

Serial Output>NO< yes

Current Loop>NO< yes

par mea >OPT< sfOutput Options

Output Options ↕for Channel Y:

Physic. Quant. ↕Volume flow

Volume in: ↕bbl/h

+Cut-off Flow2.5 cm/s

-Cut-off Flow-2.5 cm/s

Damping20 s

Store Meas.Data>NO< yes

Serial Output>NO< yes

Current Loopno >YES<

Meas.Values>ABSOLUT< sign

42 SUFLUXUS_HPIV1-0, 2011-08-23


Enter the lowest expected measured value. The unit ofmeasurement of the source item will be displayed. Zero-Scale Val. is the measured value assigned to the lowerlimit of the output range.

Press ENTER.

Enter the highest expected measured value. Full-ScaleVal. is the measured value assigned to the upper limit ofthe output range.

Press ENTER.

Enter the error value delay (here: 20 s).

Press ENTER.

Note! If Current liquid is selected during the parametrization of theoutputs, the value 0 should be entered for Zero-Scale Val. andthe number of defined media for Full-Scale Val.. The outputvalues are associated with the media in the coefficient set and cor-respond to the order in which the media are displayed in the menuitem Parameter\Medium during the parametrization of the mea-surement.

Zero-Scale Val.0.00 bbl/h

Full-Scale Val.300.00 bbl/h

Error-val. delay20 s

SUFLUXUS_HPIV1-0, 2011-08-23 43


3.6.1 Calculation of the Damping Factor for the Rate of Change of the Sound Speed

The limit of the rate of change at which an interface between different media is detected is defined on an external analysissystem. The rate of change of the sound speed is defined as

s = Δc/Δt (see Fig. 5)

with

The damping factor for the rate of change (Slope damping) is the time frame over which FLUXUS HPI calculates therate of change of the sound speed. If a value that is too high is entered for Slope damping, the calculated rate of changewill not reach the necessary limit to detect the interface. If a value that is too low is entered, the normal fluctuations of thesound speed occurring in the medium during the measurements can be interpreted as interfaces.

If the approximate usual duration of the transition between two media at the measuring point is known and constant, thedamping factor of the rate of change can be calculated. In this case, the damping factor of the rate of change is 50-90 % ofthe duration of the transition.

If the min. difference Δcmin between the sound speeds of the media flowing in the pipe is known, the max. damping factorof the rate of change can be calculated as follows:

Δtmax = Δcmin/s

s - rate of change of the sound speedΔc - difference between two sound speeds at two different point in timeΔt - time difference, corresponds to the damping factor of the rate of change (Slope damping)

Fig. 5: Damping factor for the rate of change

cB

Δt

Δc

c1

c2

rate of changeof the sound speed

limit of therate of change

medium 1 medium 2

44 SUFLUXUS_HPIV1-0, 2011-08-23


4 HPI SettingsIn this section, the HPI settings are described without reference to the other settings of the transmitter. For a detailed de-scription of the measurement preparation, see section 3.

4.1 Activation of the Additional HPI Functions

4.2 Selection of the MediumSelect the program branch Parameter. Press ENTER until the menu item Medium is displayed.

Select Special Funct.\SYSTEM settings\Measur-ing\HPI Measuring. Select on to activate the additionalHPI functions, off to deactivate the additional HPI func-tions and work in the normal measuring mode.

Press ENTER.

If off is selected, the transmitter will operate in the normalmeasuring mode. The HPI media will not be available inthe program branch Parameter. Only the media of thenormal measuring mode will be displayed.

If on is selected, the available HPI option will be displayed(here: Interface only).

Press ENTER.

Select the medium. During the parametrization of the HPImeasurement, only HPI media can be selected.

Press ENTER.

The list item allLiquids (the designation can vary ac-cording to the configuration) is available with the HPI op-tions Interface only and Multi Product. It contains thesound speed/density dependence of all the HPI mediastored in the transmitter.

Interface only: The flow measurement and the calculationof the HPI quantities of the current medium and the detec-tion of interfaces between the media are available.

Multi Product: The flow measurement and the calculationof the HPI quantities of the current medium, the detectionof interfaces between the media and the identification ofmedia are available.

An individual medium (here: Asphalt 980) can be selectedinstead of allLiquids. Individual media are availablewith the HPI options Single Product and Multi Product.

Single Product: If an individual medium is selected, theflow measurement and the calculation of the HPI quantitiesof the current medium will be available.

Multi Product: If an individual medium is selected, the flowmeasurement and the calculation of the HPI quantities ofthe current medium will be available. The identification ofmedia will be deactivated.

HPI Measuringoff >ON<

INFO:HPI-mode is Interface only

Medium ↕

Medium ↕allLiquids

Medium ↕Asphalt 980

SUFLUXUS_HPIV1-0, 2011-08-23 45


4.3 Selection of the HPI Quantity to be Used for the OutputSelect Special Funct.\SYSTEM settings\Proc. outputs. Press ENTER until the menu item Source chan. isdisplayed.

4.4 Input of the Damping Factor for the Rate of ChangeSelect the program branch Output Options. Press ENTER until the menu item Slope damping is displayed.

Select in the scroll list the calculation channel that hasbeen parametrized (here: Y). If no calculation channel hasbeen parametrized, select the measuring channel. PressENTER.

Select the list item HPI Values. Press ENTER.

Select the HPI quantity that is to be used for the output.Depending on the HPI option and the application, the fol-lowing HPI quantities are available:

• Slope soundspeed: rate of change of the sound speed

• Sonic ID: sound speed at TB

• Specific gravity: specific gravity

• API-value: API gravity

• Density at BC: density at standard conditions

• VCF-value: volume correction factor

• Slope API-value: rate of change of the API gravity

• Current liquid: number of the current liquid

Press ENTER.

Enter the damping factor for the change of rate (here: 20s). If 0 (zero) is entered, the change of rate will not bedamped.

Press ENTER.

The damping factor of the change of rate is used to im-prove the detection of interfaces between media. The cal-culation of the damping factor is described in section 3.6.1.


I1 Source item ↕HPI Values

HPI Values ↕Slope soundspeed

Slope damping20 s

46 SUFLUXUS_HPIV1-0, 2011-08-23


5 Measurement

Repeat the steps for measuring channel B, if necessary. As soon as the measuring channel is parametrized, the measure-ment will be started.

5.1 Display During the MeasurementThe HPI quantities selected in Output Options can be displayed during the measurement:

Select program branch Measuring. Press ENTER.

If this error message is displayed, the parameters are notcomplete. Enter the missing parameters in the programbranch Parameter.

Activate the measuring channels A and B and the calcula-tion channel Y.

: the channel is active

–: the channel is not active

•: the channel can not be activated

Press ENTER.

A value for the number of sound paths corresponding tothe connected transducers and the entered parameterswill be recommended. Change the value, if necessary.

Press ENTER.

A value for the transducer distance is recommended. In-stall the transducers. Adjust the transducer distance.

Press ENTER.

Confirm the adjusted transducer distance.

Press ENTER.

The error message will displayed if the current medium isnot a medium with additional HPI information. A measure-ment is not possible. Select a different medium.

display explanationAPI= API gravity in ° APIVCF= volume correction factorvcp= volume correction factor, calculated from the pressureSID= Sonic ID, sound speed at TB

DBC= density at TB

VSC= kinematic viscosity in mm2/s = cStSpecGr= specific gravity

designation of the selected mediumno liquid detect This error message will be displayed for a measuring channel if no medium is identified, or for a calcula-

tion channel if one of the media

par >MEA< opt sfMeasuring

par >MEA< opt sfNO DATA!

CHANN: MEASUR

>A< B Y Z .

A: 2 NUM

A: Sound Path2 NUM

Transd. DistanceA: 54 mm!

Transd. Distance?(54.0) 54 mm

NO HPI-MeasureINVALID MEDIUM !

SUFLUXUS_HPIV1-0, 2011-08-23 47

Supplement to User Manual - ENGLISH

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