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sebaKMT UDM-300 User Manual

Ultrasonic flow measurement device
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User Manual
Ultrasonic Flow Measurement Device
UDM-300
Mess- und Ortungstechnik
Measuring and Locating Technologies
Elektrizitätsnetze
Power Networks
Kommunikationsnetze
Communication Networks
Rohrleitungsnetze
Water Networks
Abwassernetze
Sewer Systems
Leitungsortung
Line Locating
Edition: 01 (03/2015) - EN
Art.No.: 84568

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Summary of Contents for sebaKMT UDM-300

  • Page 1 User Manual Ultrasonic Flow Measurement Device UDM-300 Mess- und Ortungstechnik Measuring and Locating Technologies Elektrizitätsnetze Power Networks Kommunikationsnetze Communication Networks Rohrleitungsnetze Water Networks Abwassernetze Sewer Systems Leitungsortung Line Locating Edition: 01 (03/2015) - EN Art.No.: 84568...
  • Page 3 All rights reserved. No part of this handbook may be copied by photographic or other means unless SebaKMT have before-hand declared their consent in writing. The content of this handbook is subject to change without notice. SebaKMT cannot be made liable for technical or printing errors or shortcomings of this handbook.
  • Page 4 SebaKMT. All warranty claims versus SebaKMT are hereby limited to a period of 12 months from the date of delivery. Each component supplied by SebaKMT within the context of warranty will also be covered by this warranty for the remaining period of time but for 90 days at least.
  • Page 5 Die Sprache, in der die Anzeigen auf dem Messumformer erscheinen, kann eingestellt werden (siehe Ab- schnitt 8.5). The transmitter can be operated in the language of your choice (see section 8.5). Il est possible de sélectionner la langue utilisée par le transmetteur à l'écran (voir section 8.5). El caudalímetro puede ser manejado en el idioma de su elección (ver sección 8.5).

  • Page 7: Table Of Contents

    Table of Contents 1 INTRODUCTION Regarding this User Manual Safety Instructions Warranty 2 HANDLING First Inspection General Precautions Cleaning Storage 3 GENERAL PRINCIPLES Measurement System Measurement Principle 3.2.1 Terms 3.2.2 Measurement of the Flow Velocity Measurement Arrangements 3.3.1 Terms and Definitions 3.3.2 Examples 4 DESCRIPTION OF THE TRANSMITTER...
  • Page 8 9.1.4 Pipe Lining 9.1.5 Pipe Roughness Input of the Medium Parameters 9.2.1 Medium Temperature Transducer Selection Defining the Measuring Point Number Defining the Number of Sound Paths Transducer Distance 9.6.1 Fine Adjustment of the Transducer Distance 9.6.2 Consistency Check 9.6.3 Value of the Sound Speed Start of the Measurement Detection of the Flow Direction...
  • Page 9 SUPERUSER MODE 14.1 Activation/Deactivation 14.2 Defining the Flow Parameters 14.2.1 Profile Bounds 14.2.2 Correction of the Flow Velocity 14.3 Limit of the Signal Amplification 14.4 Upper Limit of the Sound Speed 14.5 Detection of Long Measurement Failures 14.6 Number of Decimal Places of the Totalizers 14.7 Manual Reset of the Totalizers 14.8...

  • Page 11: Introduction

    • repair of UDM 300 by unauthorized personnel SEBAKMT assumes no responsibility for injury to the customer or third persons proximately caused by the material owing to defects in the product which were not predictable or for any indirect damages.

  • Page 12: Handling

    Handling First Inspection The measuring instrument has already been tested thoroughly at the factory. At delivery, proceed to a visual control to make sure that no damage has occurred during transportation. Check that the specifications of the measuring instrument delivered correspond to the specifications given on the pur- chase order.

  • Page 13: General Principles

    General Principles For the ultrasonic measurement of the flow rate, the flow velocity of the medium flowing in a pipe is determined. Further physical quantities (e.g., volumetric flow rate, mass flow rate) are derived from the flow velocity and from additional physi- cal quantities, if necessary.

  • Page 14: Measurement Of The Flow Velocity

    Flow velocity v average value of the flow velocities over the cross-sectional pipe area. Acoustic calibration factor k α ----------- - sinα The acoustic calibration factor k is a parameter of the transducer which results from the sound speed c within the trans- ducer and the angle of incidence (see Fig.
  • Page 15 transducer (emitter) transducer (receiver) reduction in distance in the transducer α α α pipe wall β β γ flow direction γ of the medium sound path without flow sound path with flow Fig. 3.2: Sound path of the signal in the flow direction transducer (receiver) transducer (emitter) increase in distance...

  • Page 16: Measurement Arrangements

    Measurement Arrangements 3.3.1 Terms and Definitions Diagonal arrangement The transducers are mounted on the opposite sides of the pipe (see Fig. 3.5). Reflection arrangement The transducers are mounted on the same side of the pipe (see Fig. 3.6). Fig. 3.5: Diagonal arrangement Fig.

  • Page 17: Examples

    Sound plane The plane containing one, two or more sound paths or beams (see Fig. 3.7). 2 sound paths in 1 plane Fig. 3.7: Sound paths in one plane 3.3.2 Examples Diagonal arrangement with 1 beam Reflection arrangement with 1 beam 1 transducer pair 1 transducer pair 1 sound path...

  • Page 18: Description Of The Transmitter

    Description of the Transmitter Construction The cover has to be opened to access the command panel. RS232 interface state indicator "charge state" state indicator 2 x 16-digit LCD display, "power supply" backlift keyboard Fig. 4.1: Command panel of UDM 300 output transducer power supply unit/...

  • Page 19: State Indication

    State Indication The state indicators light only when the transmitter is switched on and the backlight is activated. Tab. 4.1: " State indicator power supply" LED flashes green transmitter is connected to the power supply; battery is charging LED light green transmitter is connected to the power supply;...

  • Page 20: Selection Of The Measuring Point

    Selection of the Measuring Point The correct selection of the measuring point is crucial for achieving reliable measurement results and a high measurement accuracy. A measurement on a pipe is possible if • the ultrasound propagates with a sufficiently high amplitude (see section 5.1) •...
  • Page 21 Tab. 5.1: Recommended transducer position Horizontal pipe Select a measuring point where the transducers can be mounted on the side of the pipe, allowing the sound waves to propagate in the pipe horizontally. Thus, solid at the bottom or gas bubbles at the top of the pipe will not influence the propagation of the signal.

  • Page 22: Undisturbed Flow Profile

    Undisturbed Flow Profile Some flow elements (elbows, slide valves, valves, control valves, pumps, reducers, diffusers, etc.) distort the flow profile in their vicinity. The axisymmetrical flow profile needed for correct measurement is no longer given. A careful selection of the measuring point helps to reduce the impact of disturbance sources. It is most important that the measuring point is chosen at a sufficient distance from any disturbance sources.
  • Page 23 Tab. 5.2: Recommended distance from disturbance sources D – nominal pipe diameter at the measuring point, l – recommended distance disturbance source: T piece supply line: l ≥ 50 D return line: l ≥ 10 D disturbance source: diffu supply line: l ≥ 30 D return line: l ≥...

  • Page 24: Selection Of The Measurement Arrangement Taking Onto Account The Measuring Range And The Measuring Conditions

    Tab. 5.2: Recommended distance from disturbance sources D – nominal pipe diameter at the measuring point, l – recommended distance disturbance source:pump supply line: l ≥ 50 D Selection of the Measurement Arrangement Taking onto Account the Measuring Range and the Measuring Conditions Diagonal arrangement with 1 beam Reflection arrangement with 1 beam •...

  • Page 25: Selection Of The Sound Beam Plane Near An Elbow

    Selection of the Sound Beam Plane Near an Elbow On vertical pipes On horizontal pipes flow direction elbow plane elbow plane flow direction • The sound beam plane (see section 3.3) has an angle • The sound beam plane (see section 3.3) has an angle of 90°...

  • Page 26: Installation Of Udm 300

    Installation of UDM 300 Location Select the measuring point according to the recommendations in chapter 3 and 5. The ambient temperature has to be within the operating temperature range of the transducers (see annex B). Select the location of the flowmeter within cable reach of the measuring point. The ambient temperature has to be within the operating temperature range of the transmitter (see annex B).

  • Page 27: Connection Of The Outputs

    Connection of the Outputs For the connection of the output see Fig. 6.1, Fig. 6.2, Tab. 6.1 and Tab. 6.2. Tab. 6.1: Circuits of the outputs output transmitter external circuit remark internal circuit connection active current loop < 500 Ω Fig.

  • Page 28: Output Adapter (Option)

    Output adapter (Option) binary output current output Fig. 6.3: Output adapter Connection of the Serial Interface RS232 The RS232 interface is located on the front panel of the transmitter (see Fig. 4.1). • Connect the RS232 cable to the transmitter and the serial interface of the PC. If the RS232 cable cannot be connected to the PC, use an RS232/USB adapter.

  • Page 29: Installation Of The Transducers

    Installation of the Transducers • Before starting this chapter, carry out the instruction of chapter 9. The transducers are fixed to the pipe using the supplied transducer mounting fixture. Preparation of the Pipe • The pipe has to be stable. It has to be able to withstand the pressure exerted by the transducer mounting fixture. Rust, paint or other deposits on the pipe absorb the sound signal.

  • Page 30: Mounting Of The Transducers With Transducer Shoe And Ball Chains

    Mounting of the Transducers with Transducer Shoe and Ball Chains • Insert the transducer into the transducer shoe. Turn the screw on the upper side of the transducer shoe by 90° in order to engage and lock its extremity in the groove on top of the inserted transducer. •...

  • Page 31: Start-Up Of The Transmitter

    Start-up of the Transmitter Switching on Press key PWR to switch on the transmitter. The serial number of the transmitter is dis- FLEXIM UDM 300 played for a short time. F 401 -XXXXXXXX Data cannot be entered while the serial number is displayed. the serial number of the transmitter is displayed for a short time.

  • Page 32: Program Branches

    8.3.2 Program Branches • Program branch Parameter input of the pipe and medium parameters • Program branch Measuring processing of the steps for the measurement • Program branch Output Options setting of the physical quantity, the unit of measurement and the parameters for the measured value transmission •...

  • Page 33: Navigation

    8.3.3 Navigation A vertical arrow ↕ will be displayed if the menu item contains a scroll list. The current list item will be displayed in the lower line. Use key to select a list item in the lower line. Press ENTER. SYSTEM settings↕...

  • Page 34: Language Selection

    Language Selection The transmitter can be operated in the languages listed below. The language can be selected with the following Hot- Codes: Tab. 8.1: Language HotCodes 909031 Dutch 909033 French 909034 Spanish 909044 English 909049 German Depending on the technical data of the transmitter, some of the languages might not be implemented. When the last digit has been entered, the main menu will be displayed in the selected language.

  • Page 35: Basic Measurement

    Basic Measurement The pipe and medium parameters are entered for the selected measuring point (see chapter 5). The parameter ranges are limited by the technical characteristics of the transducers and of the transmitter. Note! The parameters will only be stored when the program branch Parameter has been edited in its en- tirety.

  • Page 36: Pipe Lining

    9.1.4 Pipe Lining If the pipe has an inner lining, select yes. Press ENTER. Lining If no is selected, the next parameter will be displayed (see section 9.1.5). >YES< Select the lining material. ↕ Lining If the material is not in the scroll list, select Other Material. Press ENTER. Bitumen If Other Material is selected, the sound speed has to be entered.

  • Page 37: Defining The Measuring Point Number

    Defining the Measuring Point Number Select program branch Measuring. Press ENTER. par>MEA<opt sf Measuring If this error message is displayed, the parameters are not complete. Enter the missing pa- par>MEA<opt sf rameters in the program branch Parameter. NO DATA! If the data logger or the serial interface is activated, the measuring point number has to be entered: Enter the measuring point number.

  • Page 38: Consistency Check

    9.6.2 Consistency Check A consistency check during the measurement is recommended. The transducer distance can be displayed during measurement by scrolling with key The optimum transducer distance (here: 50.0 mm) is displayed in the upper line in paren- L=(50.0) 54.0 mm theses, followed by the entered transducer distance (here: 54.0 mm).

  • Page 39: Detection Of The Flow Direction

    Detection of the Flow Direction The flow direction in the pipe can be detected with the help of the displayed volumetric flow rate in conjunction with the ar- row on the transducers: • The medium flows in the direction of the arrow if the displayed volumetric flow rate is positive (e.g., 54.5 m³/h). •...

  • Page 40: Displaying The Measured Values

    Displaying the Measured Values The physical quantity is set in the program branch Output Options (see section 10.1). During the measurement, the designation of the physical quantity is displayed in the upper line, the measured value in the lower line. The display can be adapted (see section 10.2). 10.1 Selection of the Physical Quantity and of the Unit of Measurement The following physical quantities can be measured:...

  • Page 41: Status Line

    Press key during the measurement to change the display in the upper line, press key to change the display in the lower line. The character * indicates that the displayed value (here: flow velocity) is not the selected Flow Velocity physical quantity.

  • Page 42: Transducer Distance

    10.4 Transducer Distance By pressing key during the measurement, it is possible to scroll to the display of the L=(51.2) 50.8 mm transducer distance. 54.5 m3/h The optimum transducer distance (here: 51.2 mm) is displayed in parentheses in the upper line, followed by the entered transducer distance (here: 50.8 mm).

  • Page 43: Advanced Measuring Functions

    Advanced Measuring Functions 11.1 Command Execution during Measurement Commands that can be executed during a measurement are displayed in the upper line. A command begins with the ar- row →. If programmed, a program code has to be entered first (see section 11.7). Press until the command is displayed.

  • Page 44: Upper Limit Of The Flow Velocity

    Selection of the totalizers for storing It is possible to store only the value of the totalizer that is currently displayed or one value for each flow direction. Select Special Funct.\SYSTEM settings\Storing\Quantity Storage. If one is selected, only the totalizer whose value is changing will be stored. This can apply Quantity Storage to the totalizer for the positive or the negative flow direction.

  • Page 45: Cut-Off Flow

    11.5 Cut-off Flow The cut-off flow is a lower limit for the flow velocity. All measured flow velocities that are lower than the limit and their de- rived values are set to zero. The cut-off flow can depend on the flow direction or not. The cut-off flow is set in Special Funct.\SYSTEM set- tings\Measuring\Cut-off Flow.

  • Page 46: Program Code

    11.7 Program Code An ongoing measurement can be protected from an inadvertent intervention by means of a program code. If a program code has been defined, it will be requested when there is an intervention in the measurement (a command or key BRK).

  • Page 47: Data Logger And Transmission Of Data

    Data Logger and Transmission of Data The transmitter has a data logger in which the measured values are stored during the measurement (see section 12.1). The measured values are transmitted to a PC via the serial interface directly during the measurement (see section 12.2). For the connection of the serial interface see section 6.5 .
  • Page 48 Start of the storing If it is necessary to synchronize the storing of measured values on several transmitters, the starting time of the storing can be set. Select the starting time of the storing of measured values. Start logger ↕ Promptly: Storing will be started immediately.

  • Page 49: Measurement With Activated Data Logger

    12.1.4 Measurement with Activated Data Logger • Start the measurement. Enter the measuring point number. Press ENTER. Meas.Point No.: If arrows are displayed in the lower line on the right, ASCII text can be entered. If digits are xxx (↑↓← →) displayed, only digits, point and hyphen can be entered.

  • Page 50: Transmission Of Data

    12.2 Transmission of Data The measured values can be transmitted to a PC via the serial interface RS232 oder RS485 (optional). 12.2.1 Online Transmission of Data The measured values are transmitted during the measurement. If the data logger is activated, the measured values will also be stored.

  • Page 51: Transmission Parameters

    12.2.4 Transmission Parameters • the transmitter sends CRLF-terminated ASCII • max. line length: 255 digits RS232 • default: 9600 bits/s, 8 data bits, even parity, 2 stop bits, protocol RTS/CTS (hardware, handshake) The transmission parameters of the RS232 interface can be changed: Enter HotCode 232-0- (see section 8.4).

  • Page 52: Offline Transmission Of Data To A Terminal Program

    12.2.6 Offline Transmission of Data to a Terminal Program • Start the terminal program. • Enter the transmission parameters into the terminal program (see section 12.2.4). The transmission parameters of the terminal program and of the transmitter have to be identical. Select Special Funct.\Print Meas.Val..
  • Page 53 Transmission of Data Select the menu: DUT > Receive measuring values. Wait until the data are transmitted. Stop of the transmission of data Select the menu: File > Save. Select the series of measurement to be stored. Click on OK. Select the path on which the data should be stored.

  • Page 54: Structure Of The Data

    12.2.8 Structure of the Data The header is transmitted at the beginning of the measurement. The first 4 lines contain general information about the transmitter and the measurement. The following lines contain the parameters. Example: \DEVICE : F401-XXXXXXXX \MODE : ONLINE DATE : 2014-01-09 TIME...

  • Page 55: Settings

    Settings 13.1 Time and Date The transmitter has a battery-powered clock. 13.1.1 Time Select Special Funct.\SYSTEM settings\Set Clock. Press ENTER. SYSTEM settings↕ Set Clock The current time is displayed. Select ok to confirm the time or new to set the time. TIME 11:00 Press ENTER.

  • Page 56: Measuring Point Number

    During the next scroll through the program branch Parameter, the outer pipe diameter Outer Diameter that corresponds to the entered pipe circumference will be displayed. 57.3 example: 180 mm : π = 57.3 mm Note! The pipe circumference is only edited temporarily. When the transmitter switches back to the display of the pipe circumference (internal recalculation), slight rounding errors may occur.

  • Page 57: Setting For The Medium Pressure

    Select bar or psi as the unit of measurement for the pressure. Press ENTER. Pressure >[bar]< [psi] Select yes if lb/ft3 is to be used as the unit of measurement for the density. Density [lb/ft3] Press ENTER. >YES< Select g/cm3 or kg/m3 as the unit of measurement for the density. Press ENTER. Density unit This display will only be indicated if lb/ft3 has not been selected as the unit of measure- g/cm3...

  • Page 58: Setting The Contrast

    Select on to keep the previous totalizer values after a restart of the measurement. Quantity recall Select off to reset the totalizers to zero after a restart of the measurement. >ON< Note! All changes will be stored at the end of the dialog. 13.4 Setting the Contrast Select Special Funct.\SYSTEM settings\Miscellaneous to set the contrast of...

  • Page 59: Superuser Mode

    SuperUser Mode The SuperUser mode offers the possibility of an advanced analysis of the signal and the measured values as well as the definition of additional parameters adapted to the measuring point, in order to achieve better measuring values or during experimental work.

  • Page 60: Correction Of The Flow Velocity

    Example: profile bound for the laminar flow: 1 500 profile bound for the turbulent flow: 2 500 At Reynolds numbers < 1 500, the flow during the measurement is regarded as laminar for the calcu- lation of the physical quantity. At Reynolds numbers > 2 500, the flow is regarded as turbulent. The range 1 500...2 500 is the transition range between laminar and turbulent flow.

  • Page 61: Limit Of The Signal Amplification

    14.3 Limit of the Signal Amplification In order to prevent disturbing and/or pipe wall signals (e.g., if the pipe has run empty) from being interpreted as useful sig- nals, it is possible to define a max. signal amplification. If the signal amplification is greater than the max. signal amplifica- tion, •...

  • Page 62: Number Of Decimal Places Of The Totalizers

    14.6 Number of Decimal Places of the Totalizers The values of the totalizers can be displayed with up to 11 places, e.g., 74890046.03. In the SuperUser mode, it is pos- sible to define the number of decimal places. Select Special Funct.\SYSTEM settings\Measuring\Miscellaneous. Press ENTER until the menu item To- tal digits is displayed.

  • Page 63: Display Of The Sum Of The Totalizers

    14.8 Display of the Sum of the Totalizers The sum of the totalizers for the two flow directions can be displayed in the upper line during the measurement. Select Special Funct.\SYSTEM settings\Measuring\Miscellaneous. Press ENTER until the menu item Show ΣQ is displayed. Select on to activate the display of the sum of the totalizers, off to deactivate it.

  • Page 64: Outputs

    Outputs If the transmitter is equipped with outputs, they have to be installed and activated before they can be used: • assign the physical quantity (source item) to be transmitted to the output and the properties of the signal • define the behavior of the output in case no valid measured values are available •...

  • Page 65: Output Range

    15.1.1 Output Range During the configuration of an analog output, the output range is defined. Select a list item I1 Output range↕ or other range... to enter the output range manually. 4/20 mA If other range... has been selected, enter the values Output MIN and Output MAX. I1 Output MIN ↕...
  • Page 66 Tab. 15.3: Examples for the error output list item for the error output output signal I [ m A ] Error-value ↕ Minimum (4.0mA) Error-value ↕ I [ m A ] Hold last value Error-value ↕ I [ m A ] Maximum (20.0mA) Error-value ↕...

  • Page 67: Function Test

    15.1.3 Function Test The function of the installed output can now be tested. Connect a multimeter with the installed output. Test of the analog output The current output is tested in the display. Enter a test value. It has to be within the output I1:Output Test range.

  • Page 68: Measuring Range Of The Analog Output

    15.3.1 Measuring Range of the Analog Output After an analog output has been activated in the program branch Output Options, the measuring range of the source item has to be entered. Select sign if the sign of the measured values is to be considered for the output. Meas.Values Select absolut if the sign is not to be considered.

  • Page 69: Activation Of A Binary Output As An Alarm Output

    Enter the pulse value. The unit of measurement will be displayed according to the current Pulse Value physical quantity. 0.01 When the totalized physical quantity reaches the pulse value, a pulse will be emitted. Enter the pulse width. Pulse Width The range of possible pulse widths depends on the specification of the measuring instru- ment (e.g., counter, PLC) that is to be connected to the output.

  • Page 70: Setting The Limits

    15.5.2 Setting the Limits If the switching condition MAX or MIN is selected in the scroll list func, the limit of the output will have to be defined: Select in the scroll list Input the physical quantity to be used for the comparison. The fol- R1 Input: ↕...

  • Page 71: Defining The Hysteresis

    15.5.3 Defining the Hysteresis A hysteresis can be defined for the alarm output R1 to prevent a constant triggering of the alarm due to small fluctuations of the measured values around the limit. The hysteresis is a symmetrical range around the limit. The alarm will be activated if the measured values exceed the up- per limit and deactivated if the measured values fall below the lower limit.

  • Page 72: Alarm Output During The Measurement

    15.6.4 Alarm Output During the Measurement An alarm output with switching condition MAX or MIN will be updated max. once per second to avoid humming (i.e. fluctua- tion of the measured values around the value of the switching condition). An alarm output of the type NON-HOLD will be activated if the switching condition is met. It will be deactivated if the switch- ing condition is no longer met.

  • Page 73: Deactivation Of The Output

    Tab. 15.6: Pictograms for the alarm state indication current func mode (switching condition) (holding behavior) (switching function) state NON-HOLD NO Cont. closed HOLD NC Cont. open +→- -→+ QUANT. ERROR Example: R1 = 15.6.6 Deactivation of the Output If the programmed output is no longer required, it can be deactivated. The configuration of a deactivated output is stored and will be available if the output is activated again.

  • Page 74: Troubleshooting

    Check if the battery is inserted and charged. Connect the power supply. If the power supply is ok, the transducers or an in- ternal component of the transmitter are defective. The transducers and the transmitter have to be sent to SEBAKMT for repair.

  • Page 75: Selection Of The Measuring Point

    The flow is in the transition range between laminar and turbulent flow where flow measurement is difficult Calculate the Reynolds number of the flow at the measuring point with the program FluxFlow (free download: www.flex- im.com). Contact SEBAKMT. 16.5 Large Deviations of the Measured Values...

  • Page 76: Problems With The Totalizers

    The defined upper limit of the flow velocity is too low All measured flow velocities that are greater than the upper limit will be ignored and marked as invalid. All quantities de- rived from the flow velocity will also be marked as invalid. If several correct measured values are ignored, the totalizer val- ues will be too low.

  • Page 77: Menu Structure

    Menu Structure INIT- resistant Program Branch Parameter main menu: selection of the program branch Parameter >PAR< mea opt sf Parameter input of the outer pipe diameter Outer Diameter 100.0 mm input of the pipe circumference Pipe Circumfer. 314.2 mm This display will only be indicated if Special Funct.\SYSTEM settings\Dialogs/Menus\Pipe Circ umfer.
  • Page 78 INIT- resistant Program Branch Measuring main menu: selection of the program branch Measuring par >MEA< opt sf Measuring input of the measuring point number Meas.Point No.: xxx (↑↓← →) This display will only be indicated if Output Options\Store Meas.Data and/or Serial Output are activated. activation/deactivation of the flow profile correction PROFILE CORR.
  • Page 79 INIT- resistant Current Loop activation of a current output Current Loop I1: no >YES< This display will only be indicated if the current output has been installed in Special Funct.\SYSTEM settings\Proc. outputs. selection whether the sign of the measured values is to be considered for the Meas.Values output >ABSOLUT<...
  • Page 80 INIT- resistant input of the lower limit of the physical quantity to be monitored Low Limit: -10.00 m3/h This display will only be indicated if Alarm Output has been activated and MIN has been selected as the switching condition. input of the limit for the totalizer of the physical quantity to be monitored Quantity Limit: 1.00 This display will only be indicated if Alarm Output has been activated and...
  • Page 81 INIT- resistant activation of the display of the alarm state during the measurement SHOW RELAIS STAT >ON< selection of the unit of measurement for the length Length unit >[mm]< [inch] selection of the unit of measurement for the temperature Temperature >[°C]<...
  • Page 82 INIT- resistant input of the cut-off flow for positive measured values +Cut-off Flow cm/s range: 0...12.7 cm/s (0.127 m/s) default: 2.5 cm/s (0.025 m/s) This display will only be indicated if Cut-off Flow = sign and Cut-off Flow = user have been selected. input of the cut-off flow for negative measured values -Cut-off Flow -2.5...
  • Page 83 INIT- resistant activation of the display of the sum of the totalizers. Show ΣQ >ON< This display will only be indicated if the SuperUser mode is activated. activation of the display of the last valid measured value Keep display val >ON<...
  • Page 84 INIT- resistant SYSTEM settings\Miscellaneous selection of the display for the setting of the contrast SYSTEM settings↕ Miscellaneous setting of the contrast of the display SETUP DISPLAY ← CONTRAST → confirmation that a HotCode has to be entered Input a HOTCODE >YES<...

  • Page 85: Technical Data

    Technical Data 18.1 Flow Transmitter UDM 300 measurement measurement principle transit time difference correlation principle flow velocity 0.01...25 m/s resolution 0.025 cm/s repeatability 0.25 % of reading ±0.01 m/s medium water and acoustically similar liquids with < 6 % gaseous or solid content by volume accuracy - volumetric flow rate ±2 % of reading ±0.01 m/s...

  • Page 86: Transducers

    18.2 Transducers transducer 500 kHz 2 MHz transducer frequency MHz 0.5 inner pipe diameter d min. extended min. recommended max. recommended 3100 pipe wall thickness min. max. material housing PEEK with stainless steel cap 316Ti (1.4571) PEEK with stainless steel cap 316Ti (1.4571) contact surface PEEK PEEK...

  • Page 87: Units Of Measurement

    Units of Measurement Length/roughness Temperature unit of measurement description unit of measurement description millimeter °C degree Celsius inch °F inch degree Fahrenheit Pressure unit of measurement description bar (absolute) bar(a) bar(g) bar (relative) psi(a) pound per square inch (absolute) pound per square inch (relative) psi(g) Density unit of measurement...
  • Page 88 Volumetric flow rate Volume (totalized) unit of measurement description unit of measurement cubic meter per day m3/d cubic meter per hour m3/h m3/min cubic meter per minute m3/s cubic meter per second km3/h 1000 cubic meters per hour ml/min milliliter per minute l or m3* liter per hour l or m3*...
  • Page 89 Mass flow rate Mass (totalized) unit of measurement description unit of measurement metric ton per hour metric ton per day kg/h kilogram per hour kg/min kilogram per minute kg/s kilogram per second gram per second lb/d pound per day pound per hour lb/h lb/m pound per minute...
  • Page 90 Flow Nomogram (Metrical) volumetric flow rate volumetric flow rate V o l u m e V o l u m l 0 0 0 / l 0 / l flow velocity [m/s] S t r ö m u n g s g e s c h i t (...
  • Page 91 Flow Nomogram (Imperial) volumetric flow rate volumetric flow rate V o l u m e V o l u m e n 1 0 0 1 0 0 flow velocity [m/s] S t r ö m u n g s g e s c h w i n d i g k e i t ( f t / s )

  • Page 92: Reference

    Reference The following tables provide assistance for the user. The accuracy of the data depends on the composition, temperature and processing of the material. SEBAKMT does not assume liability for any inaccuracies. 20.1 Sound Speed of Selected Pipe and Lining Materials at 20 °C (68 °F) The values of some of these materials are stored in the internal database of the transmitter.

  • Page 93: Typiacal Roughnesses Of Pipes

    20.2 Typiacal Roughnesses of Pipes The values are based on experience and measurements. material absolute roughness [mm] drawn pipes of non-ferrous metal, glass, plastics and light metal 0…0.0015 drawn steel pipes 0.01…0.05 fine-planed, polished surface max. 0.01 planed surface 0.01…0.04 rough-planed surface 0.05…0.1 welded steel pipes, new...

  • Page 94: Properties Of Water At 1 Bar And At Saturation Pressure

    20.3 Properties of Water at 1 bar and at Saturation Pressure medium temperature medium pressure density specific [°C] [bar] [kg/m heat* [kJ/kg/K 999.8 4.218 999.7 4.192 998.3 4.182 995.7 4.178 992.3 4.178 988.0 4.181 983.2 4.184 977.7 4.190 971.6 4.196 965.2 4.205 1.013...
  • Page 95 Tento symbol indikuje, že výrobek nesoucí takovéto označení nelze likvidovat společně s běžným domovním odpadem. Jelikož se jedná o produkt obchodovaný mezi podnikatelskými subjekty (B2B), nelze jej likvidovat ani ve veřejných sběrných dvorech. Pokud se potřebujete tohoto výrobku zbavit, obraťte se na organizaci specializující se na likvidaci starých elektrických spotřebičů...

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