Ultraflux Uf 811 User Manual
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Ultraflux Uf 811 User Manual

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Uf 811
(full pipe)
User manual
Bâtiment Texas – Éragny Parc
9, Allée Rosa Luxemburg
95610 ÉRAGNY SUR OISE, FRANCE
Tel.: 33 (0)1 30 27 27 30
Fax: 33 (0)1 30 39 84 34
2012 ULTRAFLUX S.A.
All rights reserved. No part of this document may be reproduced without prior written authorisation from
ULTRAFLUX S.A. ULTRAFLUX, Uf 811 are registered trademarks of ULTRAFLUX S.A.
NT UF 811 CP GB (e) / June 2015

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Summary of Contents for Ultraflux Uf 811

  • Page 1 Fax: 33 (0)1 30 39 84 34 2012 ULTRAFLUX S.A. All rights reserved. No part of this document may be reproduced without prior written authorisation from ULTRAFLUX S.A. ULTRAFLUX, Uf 811 are registered trademarks of ULTRAFLUX S.A. NT UF 811 CP GB (e) / June 2015...

  • Page 2: Table Of Contents

    4.2 Choosing the measurement location _______________________________________________ 29 4.3 Choosing the probe location _____________________________________________________ 32 4.4 Installing probes and connectors __________________________________________________ 35 A detailed table of contents is provided at the end of the manual. NT UF 811 CP GB (e) / June 2015...
  • Page 3 CHAPTER 5: USING AND CONFIGURING THE Uf 811 ____________________ 38 5.1 Using the Uf 811 ______________________________________________________________ 39 5.2 Main configuration elements _____________________________________________________ 40 5.3 Configuring the Uf 811 __________________________________________________________ 40 5.4 SIMPLE configuration ___________________________________________________________ 42 5.5 NORMAL configuration __________________________________________________________ 54 5.6 ADVANCED configuration ________________________________________________________ 58...

  • Page 4: Chapter 1: Overview

    CHAPTER 1: OVERVIEW NT UF 811 CP GB (e) / June 2015...

  • Page 5: Converter Overview

    IP 67: Total protection against dust; protection against immersion for 30 minutes under 1m of water. This protection is only valid if the installation has been carried out or audited by Ultraflux. This protection is only ensured when the connectors are connected or capped (where the connector is not in use).

  • Page 6: Power Supply

    1.6 Communication The Uf 811 has a serial link which can be wired using RS232 or RS485 mode. It also has a USB interface. For this communication interface, the standard protocol chosen is the Slave JBUS (MODBUS). This enables the device to be connected to an instrumentation and control system or to a computer.

  • Page 7: Inputs/Outputs

     After powering on the Uf 811, the screen displays the page which has been selected as priority. To choose this "default" screen, select and validate it by pressing the "B" key in measurement mode.

  • Page 8: Operating Lamps

    To change a row, select it using  or  and change the value using  or .  If no key is pressed for approximately one minute, the Uf 811 automatically returns to "measurement" mode and to the display chosen as priority using "B".

  • Page 9: Functions

    In the context of decree no. 2005-829 dated 20 July 2005 relating to the collection, treatment and disposal of electrical and electronic equipment in France, Ultraflux delegates the responsibility for financial and also logistical recovery to the user, who will manage their own waste.

  • Page 10: Ce Marking

    Immunity to radiated electromagnetic fields Criterion A EN 61000-4-4 Immunity to rapid transients in bursts Criterion B EN 61000-4-5 Immunity to shock waves Criterion B EN 62311 Human exposure to electromagnetic fields NT UF 811 CP GB (e) / June 2015...

  • Page 11: Chapter 2: Safety Instructions

    CHAPTER 2: SAFETY INSTRUCTIONS NT UF 811 CP GB (e) / June 2015...

  • Page 12: Using The Flow Meter

    Should the temperature of the unit rise abnormally, it is recommended to power off the flow meter and call Ultraflux for expert advice. In the event of a fire inside the flow meter, power it off without opening or touching it, then call the competent services in order to secure the premises.

  • Page 13: Contact Address

    For any requests for information, please contact us at: ULTRAFLUX 9, Allée Rosa Luxemburg 95610 ERAGNY FRANCE http://www.ultraflux.net E-mail : ultraflux@ultraflux.fr Tel.: 33 (0)1 30 27 27 30 Fax: 33 (0)1 30 39 84 34 2012 ULTRAFLUX S.A. NT UF 811 CP GB (e) / June 2015...

  • Page 14: Chapter 3: Installation And Wiring

    CHAPTER 3: INSTALLATION AND WIRING NT UF 811 CP GB (e) / June 2015...

  • Page 15: Wall Attachment

    It is recommended to follow the assembly method described below in order to avoid any risk of injury. Assembly must be carried out or inspected by Ultraflux to ensure the unit is leakproof and will operate correctly.

  • Page 16: Wiring Instructions

    It is sometimes necessary to protect the inputs/outputs, the power supply and the ultrasonic chords. You are strongly recommended to contact Ultraflux to obtain a diagnosis on this point. Ultraflux accepts no responsibility in the event of the incorrect use of the flow meter, and in such cases, the Ultraflux guarantee would not be valid.

  • Page 17: Communication Connector

     The serial link is electrically insulated.  If the UF 811 is the last device on the RS485 network, a termination resistance of 120 Ohm must be added to the connector between pins A and B.  Only one of the two interfaces may be in operation at any one time.
  • Page 18 Fit the armour, the packing and the ring clip. Turn the set screw to fasten the cable in place. Screw down the conductor wires. Fit the connector. Firmly tighten the set screw. NT UF 811 CP GB (e) / June 2015...

  • Page 19: Input/Output Connectors

    3.3.2 Input/output connectors The Uf 811 can contain up to 4 single I/O modules or 2 double I/O modules. 2 connectors (I/O 1 & I/O 2) are provided for connection. Their wiring depends on the type and location of the modules determined when the order is placed.

  • Page 20: Wiring Of The Relay Modules

    A wire 2 current B wire 1 current B wire 2 4) Wiring of the voltage input modules The pins have the following functions: Function voltage A(+) voltage A(-) voltage B(+) voltage B(-) NT UF 811 CP GB (e) / June 2015...

  • Page 21: Wiring Of The Temperature Modules

    Important: For 2- or 3-wire cables, just use "bridging" to make up for the missing wires. In the 3-wire version, a white wire is missing: simply bridge the two white wire terminals 1 and 2, and place the white cable on the "white wire" pin. NT UF 811 CP GB (e) / June 2015...

  • Page 22: Example Of A Module Configuration

    5 I/O 2 red wire 1 probe 1 6 I/O 2 white wire 1 probe 1 7 I/O 2 red wire 2 probe 1 8 I/O 2 white wire 2 probe 1 NT UF 811 CP GB (e) / June 2015...

  • Page 23: Plug Fitting Instructions

    Fit the armour, the packing and the ring clip. Turn the set screw to fasten the cable in place. Screw down the conductor wires. Fit the connector. Firmly tighten the set screw. NT UF 811 CP GB (e) / June 2015...

  • Page 24: Probe And Chord Connector

    The flow meter may be configured with only one probe per connector, but the number of possible chords is then divided by two. You are recommended to contact Ultraflux in order to define the best configuration for your application.

  • Page 25: Power Supply Connector

    1. Install the protective grounding braid on the dedicated screw. 2. Install the V+, 0V and ground wires on the connector. NT UF 811 CP GB (e) / June 2015...
  • Page 26 Fit the armour, the packing and the ring clip. Turn the set screw to fasten the cable in place. Screw down the conductor wires. Fit the connector. Firmly tighten the set screw. NT UF 811 CP GB (e) / June 2015...

  • Page 27: Ground Connection

    Screw the connector to the cable using the torque intended for the connector. Note: If a connection is not used, cap it off at the Uf 811 in order to maintain IP67 leaktightness. NT UF 811 CP GB (e) / June 2015...

  • Page 28: Chapter 4: Installing A Measuring Point

    CHAPTER 4: INSTALLING A MEASURING POINT NT UF 811 CP GB (e) / June 2015...

  • Page 29: Composition Of A Measuring Point

    Apart from the electronic converter (the unit), a measuring point includes the following components:  1 to 2 pairs of probes  1 to 4 special cables for the probes (provided by Ultraflux) 4.2 Choosing the measurement location It is essential to follow the instructions given in our document “Ultrasonic ".
  • Page 30 NT UF 811 CP GB (e) / June 2015...

  • Page 31: Multichord Measurement

    Vertical pipes with rising flow Low points of horizontal pipes Siphon mounting for pipes with a slight slope Locations not recommended Vertical pipe with downflow, particularly in the case of free flow. High points NT UF 811 CP GB (e) / June 2015...

  • Page 32: Choosing The Probe Location

    For each chord, enter the length (in meters) between the faces of the two probes. To help you, read our document “Ultrasonic transit time flowmeter”. Also enter the projected length (Daxe) of this measurement relative to the axis of the pipe. NT UF 811 CP GB (e) / June 2015...
  • Page 33 4.3.2 External probes (clamp-on) External probes may be mounted in several configurations depending on the number of ultrasound wave reflections on the wall of the pipe: Direct or / configuration: Reflex or V configuration: NT UF 811 CP GB (e) / June 2015...
  • Page 34 On the other hand, the ultrasound echo will be weaker the longer the distance and therefore difficult to measure. A compromise must therefore be found between accuracy and ease of finding the ultrasounds. This compromise depends on the application (fluid, quality of the wall, diameter, etc.). NT UF 811 CP GB (e) / June 2015...

  • Page 35: Installing Probes And Connectors

    - "traditional" gel for temporary measurements at ambient temperature and without too much humidity, - high temperature gel (<300°C), - grease in the case of high humidity (quality depending on temperature). NT UF 811 CP GB (e) / June 2015...

  • Page 36: Installing The Probe

    (the coupling medium film could be altered/broken). 4.4.3. Inserted probes Preliminary comment: before you do anything, you must check with Ultraflux whether your probes can be extracted under load or not. Whether an inserted probe may be extracted under load or not is determined by the probe used and the application conditions of your measuring point (pressure, fluid measured, etc.).

  • Page 37: Screw Probes

    2) Screw probes step: Check the position of the bosses relative to the drawing provided by Ultraflux step: Check the state of the seal face which must be free of irregularities and dirt. Seal faces which are rusted, battered or generally in a bad state of repair must not be used.

  • Page 38: Chapter 5: Using And Configuring The Uf 811

    CHAPTER 5: USING AND CONFIGURING THE Uf 811 NT UF 811 CP GB (e) / June 2015...

  • Page 39: Using The Uf 811

    5.1 Using the Uf 811 The Uf 811 has a screen and a keypad which can be used to configure and view the measurements as they are taken. LEDs indicate the status of the measurement and of the flow meter communication.

  • Page 40: Main Configuration Elements

    Advanced: mode allowing the complete adjustment of the flow meter settings. This mode is reserved for users with detailed knowledge of the transit time difference flow measuring technique and with some idea of hydraulic concepts. NT UF 811 CP GB (e) / June 2015...

  • Page 41: Flow Meter Menu ("Settings" Mode)

    ADVANCED CONFIGURATION: settings of the simulation mode, the special probes, the specific codes for ultrasonic treatment, etc.  ECHO DISPLAY: display of the echo signals of the ultrasonic probes.  FIRMWARE UPDATE: update of the firmware NT UF 811 CP GB (e) / June 2015...

  • Page 42: Simple Configuration

    This command reinitialises the flow meter (to factory configuration). 3) Confirmation (of reinitialisation) Reinitialisation of the flow meter requires the user to enter a field requiring confirmation (protection against handling errors). NT UF 811 CP GB (e) / June 2015...

  • Page 43: Configuration

    Each flow meter can be assigned a label with up to 8 characters (registration number). The position of the current character is chosen using the ▼ and ▲ keys. To scroll through the characters, use the < and > keys. NT UF 811 CP GB (e) / June 2015...

  • Page 44: Back Light

    3) Flow graph The flow graph is one of the Measurement screens. This shows the changes in a particular magnitude in the form of a curve (see the possible magnitudes below). NT UF 811 CP GB (e) / June 2015...

  • Page 45: Chord Settings

    5) Type of fluid In "simple" configuration mode, the fluid must be water at ambient temperature (cannot be modified). 6) Definition of the pipe The pipe diameter, thickness and material must be defined. NT UF 811 CP GB (e) / June 2015...

  • Page 46: Totalizer Configuration" Menu (If Enabled)

    Resetting totalizers is inhibited when the flow meter leaves the factory. On request and before shipping, it is possible to authorise the resetting of totalizers. On site, only an Ultraflux operative will be able to reset the totalizers. To reset a totalizer (if authorised): 1.

  • Page 47: Inputs/Outputs" Menu (If Enabled)

    Relay. The menu only appears if inputs or outputs are installed on the flow meter. To install additional inputs/outputs, please contact Ultraflux to find out the specifications of all available inputs/outputs. 1) Current input and voltage input module The possible options are: ...

  • Page 48: Temperature Input Module

    The possible options are:  OFF: disabled,  PT100-PT1000 mode 2-, 3- or 4-wire (for further details, contact Ultraflux). Define: the type of sensor, Pt 100 or Pt 1000, the type of assembly, 2-wire, 3-wire or 4-wire, the value of the filter and the memory, any offset.

  • Page 49: Relay Output Module

    Closed:  The relay is on if the Uf 811 is powered on, and off if it is not powered on. This choice therefore allows the relay to be used to detect the presence of the power supply (positive safety).
  • Page 50 Select the magnitude that you wish to associate with the output using the chapter headers (function) and the chapter items (value). the value relating to 0 hertz. the value relating to 1 Khertz. the value if a fault occurs. NT UF 811 CP GB (e) / June 2015...

  • Page 51: Logger Settings" Menu (If Enabled)

    10 mins, 15 mins, 30 mins, 1 hr, 2 hrs, 6 hrs, 12 hrs and 24 hrs. 6) Logger autonomy This field, which cannot be changed, shows the remaining autonomy of the logger. NT UF 811 CP GB (e) / June 2015...

  • Page 52: Logger Variables

    Flow measurement Logger Time (s) The vertical lines (blue) show when logger recording is triggered. If the variation of the flow is greater than the configured threshold, the logger forces a recording. NT UF 811 CP GB (e) / June 2015...

  • Page 53: Echo Display" Menu

    The measurement is carried out on the first movement to 0 of the cycle which crosses this threshold. On the bottom left is shown the travel time difference of ∆ the ultrasounds (does not include T0). NT UF 811 CP GB (e) / June 2015...

  • Page 54: Normal Configuration

    Then the flow metering system faults itself if there are still no new valid flow rate measurements. Time Configured storage time NT UF 811 CP GB (e) / June 2015...

  • Page 55: Filter

    20 seconds, give the time constant a value of 40 or 60 s. However, you must ensure that the time constant is not too large, since this would risk masking significant events. NT UF 811 CP GB (e) / June 2015...

  • Page 56: Delta T0 And Auto Zero

    - change the Delta C to widen or shorten the search window. If the echo is on the right, the value of C must be lowered. Conversely, if the echo is on the left, the value of C must be increased. NT UF 811 CP GB (e) / June 2015...

  • Page 57: Deletion Rate (Qeff)

    6) Deletion rate (Qeff) The deletion rate is the flow rate below which the flow meter will display 0. This gives you a clear indication of a flow rate considered to be null. NT UF 811 CP GB (e) / June 2015...

  • Page 58: Advanced Configuration

    In Advanced mode, you can define the wall through 3 different materials/layers. If no material shown in the list is the same as that making up your pipe, select "OTHER": you will then be able to define the appropriate celerity for the sound. NT UF 811 CP GB (e) / June 2015...

  • Page 59: Laminar/Turbulent Transition

    Using the maximum gain setting, you can reject measurements if the gain exceeds the value entered in the flow meter. Important: You are strongly advised to contact Ultraflux before modifying these settings. NT UF 811 CP GB (e) / June 2015...

  • Page 60: Weighting Coefficients Of The Chords

    + and – 0.8090 0.1382 Please feel free to contact Ultraflux to determine the value of the weighting coefficients. 5.6.2 "Linearisation settings" menu One last action possible on the flow is the linearisation of the result. Depending on the flow, the flow is corrected by X% based on a pre-defined table: The parameter Q ref defines the maximum flow used for the linearisation.

  • Page 61: Advanced Settings" Menu

    0 and 2 times the indicated value. 2) Special probes It may be necessary in certain cases to define a probe which is not referenced in the list of Ultraflux probes. Before using this option, you are strongly recommended to contact Ultraflux.

  • Page 62: Measurement" Mode

    (the higher the gain, the more difficult it is to obtain a measurement),  IQ quality index (100% indicates a very good measurement, 0% indicates that the measurement is not possible). NT UF 811 CP GB (e) / June 2015...

  • Page 63: Totalizers

    This page shows the status of the logger and the last recording made. 7) Events These pages are used to find out whether there is a problem on the flow meter and to localize it in order to resolve it. NT UF 811 CP GB (e) / June 2015...

  • Page 64: Distance Between Probes

    The information from the various pages in the "measurement" mode allow you to check whether your measurements are consistent. The gain and IQ (Quality Index) values also provide you with information on the quality of your measurement. NT UF 811 CP GB (e) / June 2015...

  • Page 65: Chapter 6: Function Engine

    CHAPTER 6: FUNCTION ENGINE NT UF 811 CP GB (e) / June 2015...

  • Page 66: Principle

    6.1 Principle Each Uf 811 includes a miniature PLC. This PLC allows Ultraflux to easily install additional features for this flow meter. On request, Ultraflux can quickly integrate a new feature for your Uf 811. 6.2 Application examples 6.2.1 Water temperature calculation The water temperature can be determined from its celerity (via a calculation).

  • Page 67: Chapter 7: Pc Software

    CHAPTER 7: PC SOFTWARE NT UF 811 CP GB (e) / June 2015...

  • Page 68: Introduction

    The program is run by double-clicking the icon associated with the software and placed on the desktop, or by selecting the program via Start \ Programs \ Ultraflux \ software corresponding to your flow meter. NT UF 811 CP GB (e) / June 2015...

  • Page 69: Connecting The Flow Meter To The Pc

    7.1.2 Connecting the flow meter to the PC To connect the Uf 811 to the PC, you must connect the lead provided (serial link or USB cable). The exchanges are made in the JBus/ModBus protocol, the PC being the master and the Uf 811, identified by its number, being the slave.

  • Page 70: Configuration Window

    (Excel by default, if this is installed on your computer). It also includes a "Autosearch" button used to automatically detect the presence of an Ultraflux flow meter. Comment: To use the serial link, the transmission speed can be set from 300 to 115,200 bauds, the fastest speed being preferable, especially for data-logger downloads.

  • Page 71: File Menu

    7.1.6 File menu The File menu allows you to open a saved file ("Open" command), or prepare a settings file offline ("New" command). Once the file is saved, you can export it to a Uf 811. 7.1.7 Measurement window The measurement window is opened using the Dialogue/Measurement command.

  • Page 72: General" Tab

    2) "General" tab This tab displays the main information about the measurement: graphic display of the measurement, instant values of the flow rate and flow velocity, totalizers. NT UF 811 CP GB (e) / June 2015...

  • Page 73: Qa" Tab (Flow Rate)

    This tab displays the main information concerning the measurement channel: graphic display of the measurement, instant values of the flow rate and flow velocity and KH; information related to the measuring chords. Comment: There are as many tabs as there are pipes configured. NT UF 811 CP GB (e) / June 2015...

  • Page 74: Inputs/Outputs" Tab

    "Function" tab: definition of the engine input constants accessible to the user (when a function is located in the engine). "Advanced" tab: definition of the Advanced operating mode. "Inputs/outputs" tab: definition of the configuration of the inputs and outputs. NT UF 811 CP GB (e) / June 2015...

  • Page 75: General" Tab (In The "General" Drop-Down Menu)

    The software allows the date and time of the Uf 811 to be synchronized with those of the host PC: select the option "Synchronise with PC time" before saving the settings on the flow meter.

  • Page 76: Logger" Tab (In The "General" Drop-Down Menu)

    4) "Totalizers" tab (in the "General" drop-down menu) The screenshot below shows an example of settings in Advanced mode. All the settings displayed below have been described previously in this document (see section 5.4.3). NT UF 811 CP GB (e) / June 2015...

  • Page 77: Inputs/Outputs" Tab (In The "General" Drop-Down Menu)

    The screenshot below shows an example of settings in Advanced mode. All the settings displayed below have been described previously in this document (see section 5.4.4). You can choose whether or not to activate the Totalizer, Logger and Input/output functions resources. NT UF 811 CP GB (e) / June 2015...

  • Page 78: Control" Tab (In The "Control" Drop-Down Menu)

    7) "Definition of chords" tab (in the "Pipe" drop-down menu) The screenshot below shows an example of settings in Advanced mode. All the settings displayed below have been described previously in this document (see section 5.4.2). NT UF 811 CP GB (e) / June 2015...

  • Page 79: Linearisation" Tab (In The "Control" Drop-Down Menu)

    8) "Linearization" tab (in the "Pipe" drop-down menu) The screenshot below shows an example of settings in Advanced mode. All the settings displayed below have been described previously in this document (see section 5.6.2). NT UF 811 CP GB (e) / June 2015...

  • Page 80: Archiving, Processing And Printing Of Saved Files

    You can then freely modify this data. 7.3 Settings files The Uf 811 has 11 spaces in its free memory for the storage of configurations (see part 5.4.1): you can therefore recall or save your selections.

  • Page 81: Appendix I: Characteristic Echo Signals

    Appendix I: Characteristic echo signals NT UF 811 CP GB (e) / June 2015...
  • Page 82 Comment: The signals observed are often longer than the one shown above. This is completely normal, the important criterion being the velocity of the signal rise above the threshold.  Slowly rising signal:  Signal distorted by an incorrect positioning of the probes: NT UF 811 CP GB (e) / June 2015...
  • Page 83 (pollution on the surface of the probe).  Presence of electromagnetic interference Comment: in this case, move the cables (in particular the probe cables) away from the power cables. Check the ground connections and the shielding. NT UF 811 CP GB (e) / June 2015...

  • Page 84: Appendix Ii: Speed Of Sound In Water

    Appendix II: Speed of sound in water NT UF 811 CP GB (e) / June 2015...
  • Page 85 (°C) C (m/s) t (°C) C (m/s) 1422.8. 1506.4. 1426.5. 1520.1. 1447.6. 1529.2. 1466.3. 1536.7. 1482.7. 1542.9. 1497 — — Approximate value: C = 1557 – 0.0245.(74 – t)2 Celerity (m/s) Temperature (C°) NT UF 811 CP GB (e) / June 2015...

  • Page 86: Appendix Iii Troubleshooting

    Appendix III Troubleshooting III.1 Diagnostic indications III.2 Description of fault bits III.3 Fault grid NT UF 811 CP GB (e) / June 2015...

  • Page 87: Iii.1 Diagnostic Indications

    Probes excessively clogged. Fluid too absorbent, too much slurry, excessively aerated. Contact us and we will work with you to find the best solution. Probes defective or Uf 811 malfunctioning. Contact us if your checks result in this conclusion. ...
  • Page 88 The message "open loop" appears permanently when setting a current output Cause: Break in the loop.  The message "outside limits" appears permanently or intermittently when setting an analogue input Cause: Current or voltage outside the range of use. NT UF 811 CP GB (e) / June 2015...

  • Page 89: Iii.2 Description Of Fault Bits

    Fault on an input/output module. Internal clock The clock time must be set correctly. Fault on the Qb pipe. Fault on the Qa pipe. Fault on the total flow. QT not valid Total flow invalid. NT UF 811 CP GB (e) / June 2015...
  • Page 90 Voltage A input value The measurement of voltage A is outside the authorized range. outside range Voltage B input value The measurement of voltage B is outside the authorized range. outside range NT UF 811 CP GB (e) / June 2015...
  • Page 91 Flow calculation Chord taken into account in the flow calculation. Fault Fault on a chord. Not valid Chord not valid. Function fault BIT No. FUNCTION NAME DESCRIPTION Fault Function output fault. NT UF 811 CP GB (e) / June 2015...

  • Page 92: Iii.3 Fault Grid

    The non-volatile memory is faulty; measurement is possible but not archiving by the logger. Contact Ultraflux. logger The logger data cannot be used or is corrupt. Contact Ultraflux. h/w I/O One of the inputs/outputs is no longer responding. Contact Ultraflux.

  • Page 93: Appendix Iv: Link Protocol Of The Uf 811

    Appendix IV: Link protocol of the Uf 811 IV.1 Serial link characteristics IV.2 Reading of N words (with N ≤ 125) IV.3 Modbus/Jbus table IV.4 CRC16 calculation algorithm NT UF 811 CP GB (e) / June 2015...

  • Page 94: Iv.1 Serial Link Characteristics

    For FLOAT type information, it must be possible to read two consecutive words (or 4 bytes). The format complies with the IEEE standard. For LONG type information, two consecutive words (or 4 bytes) must be read. NT UF 811 CP GB (e) / June 2015...

  • Page 95: Iv.2 Reading Of N Words (With N ≤ 125)

    2 bytes Response Data Slave no. number of bytes read value 1st word ….. value last word CRC16 Size 1 byte 1 byte 1 byte 2 bytes ….. 2 bytes 2 bytes NT UF 811 CP GB (e) / June 2015...

  • Page 96: Iv.3 Modbus / Jbus Table

    Height / Channel Description Point (2) FLOAT 0231 0431 1073 Water Height (2) FLOAT 0233 0433 1075 Water Height Max. Delta (2) FLOAT 0235 0435 1077 Fault ULONG 0237 0437 1079 0239 0439 1081 NT UF 811 CP GB (e) / June 2015...
  • Page 97 1135 Gain FLOAT 0271 0471 1137 FLOAT 0273 0473 1139 Fault ULONG 0275 0475 1141 Probe Reference USHORT 0277 0477 1143 Distance Between Probes USHORT 0278 0478 1144 0279 0479 1145 NT UF 811 CP GB (e) / June 2015...
  • Page 98 Value FLOAT 02E1 04E1 1249 Fault ULONG 02E3 04E3 1251 02E5 04E5 1253 IO 04B 02E5 04E5 1253 Value FLOAT 02E5 04E5 1253 Fault ULONG 02E7 04E7 1255 02E9 04E9 1257 NT UF 811 CP GB (e) / June 2015...
  • Page 99 0539 1337 Value FLOAT 0339 0539 1337 Fault ULONG 033B 053B 1339 033D 053D 1341 Function output 10 033D 053D 1341 Value FLOAT 033D 053D 1341 Fault ULONG 033F 053F 1343 NT UF 811 CP GB (e) / June 2015...

  • Page 100: Iv.4 Crc16 Calculation Algorithm

    = number of bits poly = calculation polynomial of CRC16 = 1010 0000 0000 0001 (generator polynomial = 2 X the first byte sent is the one with the least significant bits NT UF 811 CP GB (e) / June 2015...
  • Page 101 6) Example of a module configuration _____________________________________________________________________ 22 7) Plug fitting instructions_______________________________________________________________________________ 23 3.3.3 Probe and chord connector ________________________________________________________________ 24 3.3.4 Power supply connector ___________________________________________________________________ 25 3.4 Ground connection _____________________________________________________________ 27 3.5 Connection ___________________________________________________________________ 27 NT UF 811 CP GB (e) / June 2015...
  • Page 102 1) Flanged probes _____________________________________________________________________________________ 36 2) Screw probes ______________________________________________________________________________________ 37 3) Probes with air lock _________________________________________________________________________________ 37 CHAPTER 5: USING AND CONFIGURING THE Uf 811 ____________________ 38 5.1 Using the Uf 811 ______________________________________________________________ 39 5.1.1 Operating mode _________________________________________________________________________ 39 5.1.2 Keypad ________________________________________________________________________________ 39 5.2 Main configuration elements _____________________________________________________ 40...
  • Page 103 7.1.6 File menu ______________________________________________________________________________ 71 7.1.7 Measurement window _____________________________________________________________________ 71 1) List of available tabs _________________________________________________________________________________ 71 2) "General" tab ______________________________________________________________________________________ 72 3) "QA" tab (flow rate) _________________________________________________________________________________ 73 4) "Inputs/outputs" tab ________________________________________________________________________________ 74 NT UF 811 CP GB (e) / June 2015...
  • Page 104 III.1 Diagnostic indications _________________________________________________________ 87 III.2 Description of fault bits ________________________________________________________ 89 III.3 Fault grid ___________________________________________________________________ 92 Appendix IV: Link protocol of the Uf 811 ____________________________ 93 IV.1 Serial link characteristics _______________________________________________________ 94 IV.2 Reading of N words (with N ≤ 125) _______________________________________________ 95 IV.3 Modbus / Jbus table ___________________________________________________________ 96...

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