basic service flow aspects - endress

02/05/2020

Products Solutions Services

Basic Service Flow Aspects

Slide 1 / 78 Wissanukorn P.

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Objectives of this training module

• The participant knows where to find information in different manuals

• The participant knows different additional tasks to consider during commissioning of…

• Promag

• Promass

• Prowirl

03_Basic Service Flow Aspects


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Promag Basic Service


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Data sources for service purposes


Provides information about general information like:

• Safety instructions

• Installation

• Wiring

• Operation

• Commissioning

• Maintenance

Provides information about

• Overview of the expert operating menu

• Description of device parameters


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Behaviour of fluids in a closed pipe



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Pipe work: Profile Disturbance


90°-Bend Elbow section

Control valveDouble bend


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Common flow disturbers



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Flow conditioner: a possible solution


Endress+Hauser Mitsubishi Zanker


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Objectives of this training module

The participant understands…

• …special grounding concepts magmeter

• …to perform an application check with Applicator

• …the function and setting of empty pipe detection - EPD

• …the function and setting of Electrode Cleaning Circuit - ECC

• …to check the sensor according the Checklist



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Application check Promag

Grounding:

Perfect measurement is only ensured when the fluid and the sensor have the same electrical

potential.


Exercise: Search in the BA Promag P 200 for this special case:“Pipe with a cathodic protection unit”


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Promag P 200 with a cathodic protection unit


There should be no electrically conductive connection between the pipe and the device. The device is installed potential-free in the pipe.Only the two flanges of the pipe are connected with a ground cable (copper wire, 6 mm² (0.0093 in2)).


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Empty pipe detection – Promag P/W/L/E



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Empty pipe detection – Promag H



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Promag – EPD Adjustment



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Empty pipe detection – Adjustment



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Measuring electrode

Measuring electrode

EPD electrode Empty pipe adjust [Ω]Full pipe adjust [Ω]

Service Code

Ω ?


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Electrode Cleaning Circuit (ECC)

U

Measuring electrode

Reference electrode

Measuring electrode

ECC inhibits the build-up of (conductive) Coating (Magnetite)

ECC is an additional application package for • Promag 100 P/E/H

• Promag 300, 500 P/H• Promag 400 L/W

No measurement during ECC! (Last value)


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Checking Magmeter Tube


• Visual check of liner and

electrodes for corrosion

• Resistance of the coils

• Insulation of coils and

electrodes against the

screening of their cables


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Liner and Electrodes - Example


Damage

• by abrasiveness

• by corrosion

• by diffusion of medium

• by build-up


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Liner and Electrodes - Example


Damage due to wrong sizing:

PU Liner in slurry waste water


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Liner and Electrodes

Damage Improvements:

• by abrasiveness decrease flow velocity

• by corrosion check compatibility

• by diffusion of medium change liner material

• by build-up increase of flow velocity, special electrodes


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Coil Resistance

Short circuitR 0

Over temperature

Medium ingress

Open circuitR

Strong vibrations >2g@2h/d 10..100Hz

Corrosion of Termination

board or inside sensor

casing

Ω


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Promag Service Checklist

Correct data are the key for any repair and troubleshooting:

Provide always all available information

• using the checklist

• Description of the problem

• All available data about the process, installation, media, pictures ….


Checklists are available in MMM: search„Flow, Service Handbook(SH),“


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The values for the measuring period, integration time should not be changed.


Quiz: Please open the Service checklist and find out the measuring period for Promag H 100, DN 25 (1")


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Promag Service Test Adapters


• Test adapters are used to measure the several values to check the integrity of

the sensor according the service checklist:

• Check for open/closed circuit

• Check for short to ground/short-circuit

• Resistance measurement of exciter and sensor coils and temperature sensors

• There are different kinds of adapters depending of the flowmeter.

• To measure resistance values you need a Multimeter

• To measure insulation values you need an insulation tester (500V)


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• Test adapters Promag 100/300/400/500


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• Test adapters Promag 200, 71226598

71226598


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• Coil test adapter 50068803

(new adapter)


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Insulation resistance test


Measure the insulation between

• E1 and S1

• E2 and S2

• coil1 (41) and ground

• coil2 (42) and ground


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Coil resistance test


• Measure the resistance (ohmmeter) with the coil test adapter between Coil 1 (41) and Coil 2 (42)

• Compare the results with the reference values according the checklist.

• Note the temperature of the sensor

• The resistance values refer to a reference temperature of +23 °C (+73.4 °F), the tolerances of ±10 % include a temperature range of 0 to +50 °C (+32 to+122 °F)

• The sensor must be replaced if resistance values are out of tolerance


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Temperature sensor test


• Promag H 100 only; option

• Measure the resistance values of the temperature sensors (TT+/T–) by means of the coil test adapter

• Check the resistance for short circuit or high resistance

• The sensor has to be exchanged if the temperature sensor is defective

Resist. [Ω] Temp [°C]

921,599 -20

960,859 -10

1000,000 0

1039,025 10

1077,935 20

1116,729 30

1155,408 40

1193,971 50

1232,419 60

1270,751 70

1308,968 80


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Thank you very much for your attention

Any Questions ?


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Promass Basic Service


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Objective of this learning module:

The participant understands the…

• … installation restrictions of a Promass

• … use of the zero point adjustment

• … how to use the Service Checklist



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Mounting position


Avoid mounting on the highest point

AB

C

D

Quiz: Which mounting position(s) are correct?


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Mounting position


Avoid it if solid content is present

Avoid it if air bubbles are present


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General requirement for liquid application


• Single phase medium,• System pressure must be sufficient to keep gas content in solution.

System pressure: Vapor pressure + pressure loss + safety factor

Install the pump before the Promass

A B

Quiz: Which mounting position(s) are correct?


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Zero Point adjustment


• The factory defined ZERO point is valid for water under reference condition. Zero Point

adjustment in the field is generally not required.

• Experience shows that zero point adjustment is advisable only in special cases:

• To achieve maximum measuring accuracy even with low flow rates

• Under extreme process or operating conditions (e.g. very high process temperatures or

very high-viscosity fluids).

• If the medium is inhomogeneous, a dynamic adjustment might be required


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Gas Mode


• Select “Gas” as medium

• Select gas type from internal 25 predefined gases

• If selected gas type is “others” then

• enter Reference sound velocity at 0°C in m/s

• (the calculated temperature-dependent sound velocity is used to correct the flow calibration factor)

• enter Temperature coefficient sound velocity in (m/s)/K

• If selected gas type is “Ethylene C2H4” then

• pressure correction of the sound velocity is performed using the operating pressure which is saved in the device or read in via HART

Note: Media with a density > 400g/l are always treated as liquids even if gas is selected


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Gas Mode


• Note:On account of the unfavorable correlation between the low gas density and the possible resolution of the measuring device, the density measurement of gases does not deliver useful results. For the same reason, volume measurement should not be performed since the volume is calculated from the mass and density.

• Note:Use corrected volume flow calculation of gases (fixed or calculated) instead by entering all necessary information:• Reference density (fixed or external)• Reference temperature• Linear expansion coefficient for calculating the reference density• Square expansion coefficient for calculating the reference density


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Service Checklist


Use FieldCare/DeviceCarefor the data andparameters


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Service Checklist – Example Oscillation frequency


Oscillation frequency of the measuring tubes

Use the Oscillation frequency at the calibration of the device to check abrasion or corrosion.


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Source: Supplementary documentationProlinePromassHeartbeat Technology Application PackageSD01153D


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Promass Service Test Adapters


• Test adapter Promass 100/300/500 - 71220349


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Promass Service Test Adapters


• Test adapter Promass 200 - 71226598


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Testprint



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Prowirl Basic Service


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Objective of this learning module:

The participant will understand the…

… difference of Normalized and Standardized flow

… installation restrictions of a Prowirl

… inlet / outlet runs

… mating pipe diameter

… installation factor

… band pass filter settings

… low flow coefficient setting

… wet steam detection and measurement



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Normalized or Standardized flow?

• Difference in the reference conditions

• Normalized refers always to 0°C (32°F) and 1.013 bars abs (14.696 psia)

• Standardized can refer to 15°C (59°F) or 20°C (68°F) and 1.013 bars abs

Always ask for reference conditions!!

1 m

1 m

P = 1013 mbar

T = 0 °C

1 Nm3

5-8%!!!

1 m

1 m

P = 1013 mbar

T = 15°C

1 Sm3


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Check and correct flowmeters reference conditions if necessary!


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Flow profile distorted due to: • pipe diameters not sufficient• Wafer sensor not mounted in the center of the pipe

Min. flow rate not reached: • distortions get evaluated as flow

Vibration present: • possibly not evident to the naked eye

Dual phase fluid: • e.g. due to wet steam or cavitation through pressure loss

Mechanical Installation Vortex


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Pressure Loss in a Vortex Meter

• Lowest pressure at bluff body (dynamic pressure drop)

• Low pressure may cause cavitation

• Permanent pressure loss


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Cavitation

• Caused by dynamic pressure drop

• Audible noise

vaporlossOper PPP 3.16.2


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Prowirl Inlet and Outlet requirements


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Inlet and Outlet compensation Prowirl F 200

Inlet run correction is only possible for the following flow obstructions:1) Reduction by one nominal diameter size2) Single elbow (90° elbow)3) Double elbow (2 × 90° elbows, opposite)4) Double elbow 3D (2 × 90° elbows, opposite, not on one plane)

Inlet run down to 10 x D


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Test results electronic inlet run compensation F 200



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Inlet Run Configuration Prowirl F 200


More Information: SD01226DEN_0113


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Installation of free length

Perforated plate flow conditioner


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Mating Pipe diameter

Diameter mismatch correction

Prowirl 200 can correct shifts in the

calibration factor which are caused, for

example, by diameter mismatch between

the device flange and the mating pipe

internal diameter.


Example:

Influence of the diameter mismatch without

using the correction function:

• Mating pipe DN 100 (4"), schedule 80

• Device flange DN 100 (4"), schedule 40

This installation position results in a diameter

mismatch of 5 mm (0.2 in). If the correction

function is not used, an additional measuring

uncertainty of approx. 2 % o.r. must be

expected.


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Mating Pipe diameter



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Installation factor



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What causes vibrations?

• Most common vibrations in pipe work come from pumps

• Pulsations or sound effects (cavitation)

• Other equipment with motors attached to the same structure might also introduce

vibrations to pipe


Source: sf-gmbh.deSource: chemiereport.at


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Remedies to reduce impact of vibration


• Use a remote version if strong plant vibrations are known to occur (protection of transmitter)

• Fix the pipe near the sensor

• Find another location for the meter

• Sometimes only little movement helps a lot

• Rotate the meter by 90°

• Vibration act on a preferred axis while the meter has a most sensitive axis

• Change or add support points of the pipe work

• Other support points might reduce possible resonance vibrations

• Eliminate the source of the plant vibrations (most likely not possible)

• Change meter settings (Vortex only)

• Adapt the measuring frequency ranges of the High-pass filter and Low-pass filter functions

• Increase the value in the Min. flow coefficient parameter / sensitivity, turndown

• CAREFUL: This will influence low flow performance!


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Min flow rate


Flow rate

Density

Density

Min flow rate


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X = Min flow coefficient


Flow rate

Density

Density

Min flow rate

X = 11 (0..50)

The effect of the min flow coefficient is – compared to amplification factor of 72/73 - inverse

Applicator is currently calculating with x = 6 (highest sensitivity)


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Min. Max. vortex frequency


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Min flow coefficient

Change to 11 in the field if the setting is 6


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Min flow coefficient

• The minimum measurable flow velocity is calculated as follows:

6 V min

sm /189.01000

66 V min

sm /68.25

66 V min

Example: Water

Example: Gas

ρ=density [kg/m3 or g/l ]

11!!11!! 11!!

11!! 11!!

Prowirl 200, Index B:Change to 11 in the field if the setting is 6


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Affecting parameter – Flow signal affected due vibration



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Block diagram of measuring chain


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• Measuring range depending on the nom. diameter is 0.5 to 3100 Hz• The bigger the line size, the smaller the frequencies

• Liquids in general generate much smaller frequencies than gases and steam

• To increase the application robustness of the meter the Vortex shedding frequency

is filtered with a band pass filter

• The filter ranges are automatically set after selecting the medium liquid or

gas/steam depending on DN

• Filters can be used to filter out vibration frequencies as well

• This value is not reset to the factory setting if the device is reset.


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Example for Liquid:


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Thank you very much for your attention

Any Questions?


basic service flow aspects - endress

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