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- Page 1 (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 NT UF 831 CP GB (f) / June 2015...
- Page 2 ULTRAFLUX S.A. ULTRAFLUX, UF 831 are registered trademarks of ULTRAFLUX S.A. With a view to the constant improvement of its products, Ultraflux reserves the right to modify them without notice. Furthermore, Ultraflux shall not be held responsible for any error which may be present in its documentation despite the care taken in its production.
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Page 3: Table Of Contents
4.3 Choosing the probe location ....................26 4.4 Installing probes and connectors ..................29 CHAPTER 5: USING AND CONFIGURING THE UF 831 ........32 5.1 Using the UF 831 ........................ 33 NT UF 831 CP GB (f) / June 2015... - Page 4 Diagnosis indications ........................ 81 Description of the fault bits ....................... 83 Fault grid ..........................86 Appendix 4: Link protocol of the UF 831 ............87 Serial link characteristics ......................88 Reading of N words (with N ≤ 125) ................... 89 JBUS/MODBUS table .........................
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Page 5: Chapter 1: Overview
CHAPTER 1: OVERVIEW NT UF 831 CP GB (f) / June 2015... -
Page 6: Inputs/Outputs
1.2 Communication with the flow meter UF 831 has a serial link, which can be configured by RS232 or RS485 wiring. For this communication interface, the standard protocol chosen is the Slave JBUS (MODBUS). This is used to connect the flow meter... -
Page 7: Other Functions Available
An inaccuracy on one of these values may compromise the accuracy of the measurement. 1.7 Dimensions and weight Weight: 7 kg (cabinet only) NT UF 831 CP GB (f) / June 2015... -
Page 8: Supply
• The power of the flow meter is less than 40 W. A fuse-type internal protection protects the equipment. If this protection is triggered, the equipment must be returned to Ultraflux, otherwise the guarantee will no longer be valid. The ground must be connected to both the power connector and to the ground connection contact, located alongside the connectors. -
Page 9: Environment For Use Of The Cabinet
Connection and disconnection from the outlets must be carried out with the power off and the • equipment isolated. Ultraflux accepts no responsibility for incidents which may occur following a failure to respect these instructions. Comments: Check the marking on the cabinet to ensure its supply voltage. -
Page 10: Chapter 2: Safety Instructions
CHAPTER 2: SAFETY INSTRUCTIONS NT UF 831 CP GB (f) / June 2015... -
Page 11: Symbols Used On The Flow Meter
It is recommended to follow the assembly method described below in order to avoid any risk of injury. The assembly must be carried out or inspected by Ultraflux to have all the guarantees in terms of protection against dust and immersion, and correct operation. -
Page 12: Wiring
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: Recycling The Flow Meter
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 14: Chapter 3: Installation And Wiring
CHAPTER 3: INSTALLATION AND WIRING NT UF 831 CP GB (f) / June 2015... -
Page 15: Opening The Cabinet
The latches are adjusted in the factory. The guarantee of protection against dust and immersion is dependent upon this adjustment not being modified. Likewise, this guarantee is no longer valid if the Lexan has deteriorated. NT UF 831 CP GB (f) / June 2015... -
Page 16: General Procedures
(take care with cavity walls). The area around the support must be clear in order to allow: the connection of the connectors, • the movement of the latches. • NT UF 831 CP GB (f) / June 2015... -
Page 17: Wiring Of The Connectors
Screw the connector to the cable using the torque intended for the connector. 3.2.3 Connection The connectors of the UF 831 box are installed as shown on the figure below: Comment: The addition of communication modules modifies the layout. Contact us for the details of the changes. -
Page 18: Power Supply Connector (Wiring Diagram In
Y-cable provided with the flow meter in order to separate the two probe cables. The flow meter can be configured to have only one probe per connector, but the number of chords possible is then halved. It is recommended to contact Ultraflux in order to define the most favorable configuration for your situation. -
Page 19: Communication Connector (Wiring Diagram In
Once the cabinet is fixed and the cables installed on the connectors, the probe connectors and the input/output connectors must be installed in order to plug them in at their allocated positions. NT UF 831 CP GB (f) / June 2015... -
Page 20: Analog Inputs/Outputs
1) Analog inputs/outputs The UF 831 allows two types of inputs/outputs to be used: Current inputs/outputs (0-20mA, 4-20mA, 0-24mA) or voltage inputs/outputs (0-10V), • Temperature measurement Pt 100 and Pt 1000 with 2, 3 or 4 wires. • The sensors must be powered externally. The wiring of the analog inputs/outputs is indicated in appendix 5: Wiring of the inputs - outputs. -
Page 21: Installing The Uf 831 Close To A Frequency Converter
3.2.5 Installing the UF 831 close to a frequency converter Important: Avoid installing the UF 831 close to a frequency converter. If this cannot be avoided, interference filters must be installed. It is highly recommended to contact us if this situation arises. -
Page 22: Chapter 4: Implementing A Measuring Point
CHAPTER 4: IMPLEMENTING A MEASURING POINT NT UF 831 CP GB (f) / June 2015... -
Page 23: 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 "Mesure de débit par différence de temps de transit"... - Page 24 NT UF 831 CP GB (f) / June 2015...
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Page 25: 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 831 CP GB (f) / June 2015... -
Page 26: 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 831 CP GB (f) / June 2015... - Page 27 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 831 CP GB (f) / June 2015...
- Page 28 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 831 CP GB (f) / June 2015...
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Page 29: 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 831 CP GB (f) / June 2015... -
Page 30: 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 31: 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 32: Chapter 5: Using And Configuring The Uf 831
CHAPTER 5: USING AND CONFIGURING THE UF 831 NT UF 831 CP GB (f) / June 2015... -
Page 33: Using The Uf 831
5.1 Using the UF 831 The UF 831 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 34: Leds
To modify a line, select it using ▼ or ▲ and modify the value using < or >. If no key is pressed for approximately one minute, the UF 831 automatically returns to measurement mode and to the display chosen as priority using B. -
Page 35: 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 831 CP GB (f) / June 2015... -
Page 36: Flow Meter Menu ("Settings" Mode)
ADVANCED SETTINGS: 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 831 CP GB (f) / June 2015... -
Page 37: 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 831 CP GB (f) / June 2015... -
Page 38: Settings
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 831 CP GB (f) / June 2015... -
Page 39: 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 831 CP GB (f) / June 2015... -
Page 40: 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 831 CP GB (f) / June 2015... -
Page 41: Totalizer Settings" 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 42: Input/Output Settings" 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: OFF: disabled, •... -
Page 43: Temperature Input Module
2) 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 44: Relay Output Module
Open: The relay remains constantly off. • Closed: The relay is on if the UF 831 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 45 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 831 CP GB (f) / June 2015...
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Page 46: 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 831 CP GB (f) / June 2015... -
Page 47: 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 831 CP GB (f) / June 2015... -
Page 48: 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 831 CP GB (f) / June 2015... -
Page 49: 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 831 CP GB (f) / June 2015... -
Page 50: 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 831 CP GB (f) / June 2015... -
Page 51: 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 831 CP GB (f) / June 2015... -
Page 52: Calibration (Cutoff Q)
6) Calibration (CutOff Q) The calibration 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 831 CP GB (f) / June 2015... -
Page 53: Advanced Configuration
All type of material/layers can be used as long as they can transmit ultrasounds. If you cannot find your material in the predefined list, select OTHER and enter in addition of the thickness your material’s speed of sound. NT UF 831 CP GB (f) / June 2015... -
Page 54: 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 831 CP GB (f) / June 2015... -
Page 55: 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 "Linearization settings" menu One last action possible on the flow is the linearization 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 linearization. -
Page 56: 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 57: 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 831 CP GB (f) / June 2015... -
Page 58: 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 831 CP GB (f) / June 2015... -
Page 59: 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 831 CP GB (f) / June 2015... -
Page 60: Chapter 6: Function Engine
CHAPTER 6: FUNCTION ENGINE NT UF 831 CP GB (f) / June 2015... -
Page 61: Principle
6.1 Principle Each UF 831 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 831. 6.2 Application examples 6.2.1 Water temperature calculation The water temperature can be determined from its celerity (via a calculation). -
Page 62: Chapter 7: Pc Software
CHAPTER 7: PC SOFTWARE NT UF 831 CP GB (f) / June 2015... -
Page 63: 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 831 CP GB (f) / June 2015... -
Page 64: Connecting The Flow Meter To The Pc
7.1.2 Connecting the flow meter to the PC To connect the UF 831 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 831, identified by its number, being the slave. -
Page 65: 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 66: 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 831. 7.1.7 Measurement window The measurement window is opened using the “Dialogue/Measurement” command. -
Page 67: General" Tab
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 831 CP GB (f) / June 2015... -
Page 68: Input/Output" 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 831 CP GB (f) / June 2015... -
Page 69: General" Tab (In The "General" Drop-Down Menu)
The software allows the date and time of the Uf 831 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 70: 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 831 CP GB (f) / June 2015... -
Page 71: Input/Output" 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 831 CP GB (f) / June 2015... -
Page 72: Control" Tab (In The "Pipe" Drop-Down Menu)
7) "Chord" 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 831 CP GB (f) / June 2015... -
Page 73: Linearisation" Tab (In The "Pipe" Drop-Down Menu)
8) "Linearisation" 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 831 CP GB (f) / June 2015... -
Page 74: Archiving, Processing And Printing Of Saved Files
You can then freely modify this data. 7.3 Settings files The UF 831 has 11 spaces in its free memory for the storage of configurations (see page 34 – point 8): you can therefore recall or save your selections. -
Page 75: Appendix 1: Characteristic Echo Signals
Appendix 1: Characteristic echo signals NT UF 831 CP GB (f) / June 2015... - Page 76 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 831 CP GB (f) / June 2015...
- Page 77 (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 831 CP GB (f) / June 2015...
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Page 78: Appendix 2: Speed Of Sound In Water
Appendix 2: Speed of sound in water NT UF 831 CP GB (f) / June 2015... - Page 79 (°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) Celerity (m/s) Temperature (C°) NT UF 831 CP GB (f) / June 2015...
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Page 80: Appendix 3: Troubleshooting
Appendix 3: Troubleshooting Diagnosis indications Description of the fault bits Fault grid NT UF 831 CP GB (f) / June 2015... -
Page 81: Diagnosis Indications
Fluid too absorbent, too much slurry, excessively aerated. Consult us and we can work together to find the best solution. Faulty probes or failure of the UF 831. Contact us if your verifications lead to this conclusion. Problem on the level measurement. - Page 82 The message "open loop" appears permanently when setting a current output • Cause: Break in the loop. The message "out of bands" appears permanently or intermittently when setting an • analog input Cause: Current or voltage outside the range of use. NT UF 831 CP GB (f) / June 2015...
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Page 83: Description Of The 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 831 CP GB (f) / June 2015... - Page 84 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 831 CP GB (f) / June 2015...
- Page 85 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 831 CP GB (f) / June 2015...
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Page 86: Fault Grid
The non-volatile memory is faulty; the measurement is possible but not the archiving by the logger. Contact Ultraflux. logger The data of the logger cannot be used or is false. Contact Ultraflux. h/w I/O One of the inputs/outputs is no longer responding. Contact Ultraflux. -
Page 87: Appendix 4: Link Protocol Of The Uf 831
Appendix 4: Link protocol of the UF 831 Serial link characteristics Reading of N words (with N ≤ 125) JBUS/MODBUS table CRC16 calculation algorithm NT UF 831 CP GB (f) / June 2015... -
Page 88: Serial Link Characteristics
Parity: None, • Number of stop bits: 1. • Comment: To ensure that an automaton can take measurement recordings, contact Ultraflux to obtain the measurement variables description table in the JBUS/MODBUS protocol. 23 mantissa bits 8 exponent bits 1 sign... -
Page 89: Reading Of N Words (With N ≤ 125)
2 bytes 2 bytes 2 bytes Response Slave no. number of bytes read value 1st word value last word CRC16 1 byte 1 byte 1 byte 2 bytes 2 bytes 2 bytes NT UF 831 CP GB (f) / June 2015... -
Page 90: Jbus/Modbus Table
KH (1) FLOAT 0229 0429 1065 Reynolds (1) FLOAT 022B 042B 1067 Surface FLOAT 022D 042D 1069 Level (2) FLOAT 022F 042F 1071 Height / Channel Description FLOAT 0231 0431 1073 NT UF 831 CP GB (f) / June 2015... - Page 91 0269 0469 1129 Average V FLOAT 0269 0469 1129 FLOAT 026B 046B 1131 DeltaT FLOAT 026D 046D 1133 FLOAT 026F 046F 1135 Gain FLOAT 0271 0471 1137 FLOAT 0273 0473 1139 NT UF 831 CP GB (f) / June 2015...
- Page 92 FLOAT 02A9 04A9 1193 FLOAT 02AB 04AB 1195 DeltaT FLOAT 02AD 04AD 1197 FLOAT 02AF 04AF 1199 Gain FLOAT 02B1 04B1 1201 FLOAT 02B3 04B3 1203 Fault ULONG 02B5 04B5 1205 NT UF 831 CP GB (f) / June 2015...
- Page 93 02E1 04E1 1249 IO 07 02E1 04E1 1249 Value FLOAT 02E1 04E1 1249 Fault ULONG 02E3 04E3 1251 02E5 04E5 1253 IO 08 02E5 04E5 1253 Value FLOAT 02E5 04E5 1253 NT UF 831 CP GB (f) / June 2015...
- Page 94 030D 050D 1293 Value FLOAT 030D 050D 1293 Fault ULONG 030F 050F 1295 0311 0511 1297 IO 19 0311 0511 1297 Value FLOAT 0311 0511 1297 Fault ULONG 0313 0513 1299 NT UF 831 CP GB (f) / June 2015...
- Page 95 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 831 CP GB (f) / June 2015...
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Page 96: 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 831 CP GB (f) / June 2015... -
Page 97: Appendix 5: Wiring
Wiring of the serial link in RS232 mode Wiring of the serial link in RS485 mode Supply wiring Pin function for the 110-240 VAC supply Pin function for the DC supply NT UF 831 CP GB (f) / June 2015... -
Page 98: Wiring Of Ultrasonic Probes
B probe downstream wire A probe downstream wire B Diameter of shield ≤ 3.5 mm Total length of stripping Wrop shield with copper-tape Bare shielding Shorten shield Hexagon not added NT UF 831 CP GB (f) / June 2015... -
Page 99: Wiring Of The Inputs - Outputs
(-) Wiring of the current input modules The pins have the following functions: Pins Functions current A wire 1 current A wire 2 current B wire 1 current B wire 2 NT UF 831 CP GB (f) / June 2015... -
Page 100: Wiring Of The Voltage Input Modules
Important: For 2- or 3-wire wiring, simply produce "bridging" to make up for the missing wires. In the 3- wire version, a white wire is missing: simply bridge the two white wire 1 and 2 terminals, and place the white cable on the "white wire" pin. NT UF 831 CP GB (f) / June 2015... -
Page 101: Wiring Of The Communication Port
Wiring of the serial link in RS485 mode The pins have the following functions: Pins Functions Jumper between To activate the 2 and 3 terminating resistance 1, 5, 6, 7 Not used NT UF 831 CP GB (f) / June 2015... -
Page 102: Supply Wiring
The pins have the following functions: Pins Functions phase not connected neutral protective ground Pin function for the DC supply The pins have the following functions: Pins Functions Vin + not connected Vin - protective ground NT UF 831 CP GB (f) / June 2015... - Page 103 2) On/Off inputs/outputs (relay) ....................20 3) Serial link ..........................20 4) Connection to the PC ......................20 3.2.5 Installing the UF 831 close to a frequency converter ..........21 3.2.6 Power supply wiring ....................21 NT UF 831 CP GB (f) / June 2015...
- Page 104 1) Flanged probes ........................30 2) Screw probes ........................31 3) Probes with air lock ....................... 31 CHAPTER 5: USING AND CONFIGURING THE UF 831 ........32 5.1 Using the UF 831 ........................ 33 5.1.1 Operating mode ......................33 5.1.2 Keypad ......................... 33 5.1.3 LEDs ..........................
- Page 105 1) Flow ............................. 57 2) Pipe measurements ....................... 57 3) Specific information relating to the chords ................57 4) Totalizers ..........................58 5) Date and time ........................58 6) Info. logger ........................... 58 NT UF 831 CP GB (f) / June 2015...
- Page 106 7) "Chord" tab (in the "Pipe" drop-down menu) ................72 8) "Linearisation" tab (in the "Pipe" drop-down menu) ..............73 7.2 Archiving, processing and printing of saved files ..............74 7.3 Settings files ........................74 NT UF 831 CP GB (f) / June 2015...
- Page 107 Diagnosis indications ........................ 81 Description of the fault bits ....................... 83 Fault grid ..........................86 Appendix 4: Link protocol of the UF 831 ............87 Serial link characteristics ......................88 Reading of N words (with N ≤ 125) ................... 89 JBUS/MODBUS table .........................
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