basic service flow aspects - endress
TRANSCRIPT
02/05/2020
Products Solutions Services
Basic Service Flow Aspects
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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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Products Solutions Services
Promag Basic Service
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Data sources for service purposes
03_Basic Service Flow Aspects
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
03_Basic Service Flow Aspects
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Pipe work: Profile Disturbance
03_Basic Service Flow Aspects
90°-Bend Elbow section
Control valveDouble bend
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Common flow disturbers
03_Basic Service Flow Aspects
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Flow conditioner: a possible solution
03_Basic Service Flow Aspects
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
03_Basic Service Flow Aspects
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Application check Promag
Grounding:
Perfect measurement is only ensured when the fluid and the sensor have the same electrical
potential.
03_Basic Service Flow Aspects
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
03_Basic Service Flow Aspects
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
03_Basic Service Flow Aspects
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Empty pipe detection – Promag H
03_Basic Service Flow Aspects
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Promag – EPD Adjustment
03_Basic Service Flow Aspects
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Empty pipe detection – Adjustment
03_Basic Service Flow Aspects
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Empty pipe detection – Adjustment
03_Basic Service Flow Aspects
Measuring electrode
Measuring electrode
EPD electrode Empty pipe adjust [Ω]Full pipe adjust [Ω]
Service Code
Ω ?
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Empty pipe detection – Adjustment
03_Basic Service Flow Aspects
Measuring electrode
Measuring electrode
EPD electrode Empty pipe adjust [Ω]Full pipe adjust [Ω]
Service Code
Ω ?
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03_Basic Service Flow Aspects
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
03_Basic Service Flow Aspects
• 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
03_Basic Service Flow Aspects
Damage
• by abrasiveness
• by corrosion
• by diffusion of medium
• by build-up
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Liner and Electrodes - Example
03_Basic Service Flow Aspects
Damage due to wrong sizing:
PU Liner in slurry waste water
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Checking Magmeter Tube
03_Basic Service Flow Aspects
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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Checking Magmeter Tube
03_Basic Service Flow Aspects
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 ….
03_Basic Service Flow Aspects
Checklists are available in MMM: search„Flow, Service Handbook(SH),“
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Promag Service Checklist
03_Basic Service Flow Aspects
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Promag Service Checklist
The values for the measuring period, integration time should not be changed.
03_Basic Service Flow Aspects
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
03_Basic Service Flow Aspects
• 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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Promag Service Test Adapters
03_Basic Service Flow Aspects
• Test adapters Promag 100/300/400/500
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Promag Service Test Adapters
03_Basic Service Flow Aspects
• Test adapters Promag 200, 71226598
71226598
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Promag Service Test Adapters
03_Basic Service Flow Aspects
• Coil test adapter 50068803
(new adapter)
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Insulation resistance test
03_Basic Service Flow Aspects
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
03_Basic Service Flow Aspects
• 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
03_Basic Service Flow Aspects
• 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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Products Solutions Services
Thank you very much for your attention
Any Questions ?
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Products Solutions Services
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
03_Basic Service Flow Aspects
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Mounting position
03_Basic Service Flow Aspects
Avoid mounting on the highest point
AB
C
D
Quiz: Which mounting position(s) are correct?
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Mounting position
03_Basic Service Flow Aspects
Avoid it if solid content is present
Avoid it if air bubbles are present
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General requirement for liquid application
03_Basic Service Flow Aspects
• 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
03_Basic Service Flow Aspects
• 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
03_Basic Service Flow Aspects
• 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
03_Basic Service Flow Aspects
• 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
03_Basic Service Flow Aspects
Use FieldCare/DeviceCarefor the data andparameters
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Service Checklist – Example Oscillation frequency
03_Basic Service Flow Aspects
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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Service Checklist – Example Oscillation frequency
03_Basic Service Flow Aspects
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Service Checklist – Example Oscillation frequency
03_Basic Service Flow Aspects
Source: Supplementary documentationProlinePromassHeartbeat Technology Application PackageSD01153D
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Promass Service Test Adapters
03_Basic Service Flow Aspects
• Test adapter Promass 100/300/500 - 71220349
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Promass Service Test Adapters
03_Basic Service Flow Aspects
• Test adapter Promass 200 - 71226598
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Testprint
03_Basic Service Flow Aspects
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Products Solutions Services
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
03_Basic Service Flow Aspects
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03_Basic Service Flow Aspects
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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03_Basic Service Flow Aspects
Normalized or Standardized flow?
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03_Basic Service Flow Aspects
Normalized or Standardized flow?
Check and correct flowmeters reference conditions if necessary!
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03_Basic Service Flow Aspects
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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03_Basic Service Flow Aspects
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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03_Basic Service Flow Aspects
Cavitation
• Caused by dynamic pressure drop
• Audible noise
vaporlossOper PPP 3.16.2
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03_Basic Service Flow Aspects
Prowirl Inlet and Outlet requirements
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03_Basic Service Flow Aspects
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
03_Basic Service Flow Aspects
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Test results electronic inlet run compensation F 200
03_Basic Service Flow Aspects
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Inlet Run Configuration Prowirl F 200
03_Basic Service Flow Aspects
More Information: SD01226DEN_0113
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03_Basic Service Flow Aspects
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.
03_Basic Service Flow Aspects
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
03_Basic Service Flow Aspects
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Installation factor
03_Basic Service Flow Aspects
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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
03_Basic Service Flow Aspects
Source: sf-gmbh.deSource: chemiereport.at
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Remedies to reduce impact of vibration
03_Basic Service Flow Aspects
• 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
03_Basic Service Flow Aspects
Flow rate
Density
Density
Min flow rate
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X = Min flow coefficient
03_Basic Service Flow Aspects
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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03_Basic Service Flow Aspects
Min. Max. vortex frequency
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03_Basic Service Flow Aspects
Min flow coefficient
Change to 11 in the field if the setting is 6
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03_Basic Service Flow Aspects
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
03_Basic Service Flow Aspects
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03_Basic Service Flow Aspects
Block diagram of measuring chain
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03_Basic Service Flow Aspects
Min. Max. vortex frequency
• 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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03_Basic Service Flow Aspects
Min. Max. vortex frequency
Example for Liquid:
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Products Solutions Services
Thank you very much for your attention
Any Questions?
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