Ultraflux Uf 821 User manual

NT UF 821 CO GB (a) / April 2014
Uf 821 CO & RV
(open channel or river)
User manual
9, Allée Rosa Luxemburg
95610 ÉRAGNY, FRANCE
Tél : [phone]
Fax : [phone]
2014 ULTRAFLUX S.A.
All rights reserved. No part of this document may be reproduced without prior written authorisation from
ULTRAFLUX S.A. ULTRAFLUX, Uf 821 are registered trademarks of ULTRAFLUX S.A.

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NT UF 821 CO GB (a) / April 2014
TABLE OF CONTENTS
Note: A detailed table of contents is provided at the end of the manual.
Important: If you are unfamiliar with the transit time difference measuring technique, we recommend you start by
reading our training manual "Ultrasonic transit time flowmeter".
CHAPTER 1: OVERVIEW___________________________________________4
1.1 General view of the converter _____________________________________________________ 5
1.2 Nature of the equipment _________________________________________________________ 7
1.3 Dimensions and weight __________________________________________________________ 7
1.4 Operating environment __________________________________________________________ 7
1.5 Physical protection ______________________________________________________________ 7
1.6 Power supply __________________________________________________________________ 8
1.7 Communication ________________________________________________________________ 8
1.8 Inputs/Outputs_________________________________________________________________ 9
1.9 Ultrasound chords ______________________________________________________________ 9
1.10 Navigation keys _______________________________________________________________ 9
1.11 Operating lights ______________________________________________________________ 10
1.12 Screen _____________________________________________________________________ 10
1.13 Functions ___________________________________________________________________ 11
1.14 Performance of the flow meter __________________________________________________ 11
1.15 Cleaning the flow meter________________________________________________________ 11
1.16 Recycling the flow meter _______________________________________________________ 12
1.17 CE marking__________________________________________________________________ 12
CHAPTER 2: SAFETY INSTRUCTIONS________________________________13
2.1 Using the flow meter ___________________________________________________________ 14
2.2 Equipment connected to the flow meter ____________________________________________ 15
2.3 Symbols used on the flow meter __________________________________________________ 15
2.4 Maintenance work on the flow meter ______________________________________________ 16
2.5 Contact address _______________________________________________________________ 17
CHAPTER 3: INSTALLATION AND WIRING ___________________________18
3.1 General______________________________________________________________________ 19
3.2 Wall mounting and space requirement _____________________________________________ 19
3.3 Using the cabinet ______________________________________________________________ 20
3.4 Using the lid stay ______________________________________________________________ 21
3.5 Tool-free removal of the lid ______________________________________________________ 21
3.6 Wiring instructions _____________________________________________________________ 22
3.7 Connection to the protective ground (to be carried out first)____________________________ 22
3.8 Wiring the Terminals ___________________________________________________________ 22
3.9 USB Connection _______________________________________________________________ 27

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CHAPTER 4: IMPLEMENTING A MEASURING POINT ____________________28
4.1 Choosing the measurement location _______________________________________________ 29
4.2 Installing the probes ___________________________________________________________ 29
4.3 Measurements to be taken on site ________________________________________________ 30
4.4 Analysing and processing data measured on site _____________________________________ 30
4.5 Transferring the data collected to the converter______________________________________ 31
CHAPTER 5: USING AND CONFIGURING THE Uf 821 ____________________32
5.1 Using the Uf 821 ______________________________________________________________ 33
5.2 Main configuration elements _____________________________________________________ 36
5.3 Configuring the Uf 821__________________________________________________________ 39
5.4 SIMPLE configuration mode______________________________________________________ 40
5.5 NORMAL configuration mode_____________________________________________________ 58
5.6 ADVANCED configuration________________________________________________________ 61
5.7 "Measurement" mode __________________________________________________________ 64
CHAPTER 6: FUNCTION ENGINE ___________________________________67
6.1 Principle _____________________________________________________________________ 68
6.2 Application example____________________________________________________________ 68
CHAPTER 7: PC SOFTWARE _______________________________________69
7.1 Introduction __________________________________________________________________ 70
7.2 Archiving, processing and printing of saved files _____________________________________ 84
7.3 Settings files__________________________________________________________________ 84
Appendix I: Characteristic echo signals______________________________85
Appendix II: Speed of sound in water _______________________________88
Appendix III Troubleshooting _____________________________________90
III.1 Diagnostic indications ______________________________________________________ 91
III.2 Description of fault bits_____________________________________________________ 93
III.3 Fault grid _________________________________________________________________ 96
Appendix IV: Link protocol of the Uf 821 ____________________________97
IV.1 Serial link characteristics____________________________________________________ 98
IV.2 Reading of N words (with N ≤ 125) __________________________________________ 99
IV.3 Modbus / Jbus table _______________________________________________________ 100
IV.4 CRC16 calculation algorithm________________________________________________ 104

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CHAPTER 1: OVERVIEW

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1.1 General view of the converter
1.1.1 Unit closed
Screen
Navigation
keys
Chord 1
Chord 4
Eight cable glands for
the four chords
Two cable glands for
the inputs/outputs and
the serial link
Cable gland
for the power
supply
2
.
3
.
Control indicator lights
Lid
hinge
Wall
mounting
plate
Retaining
screw
Seal
Lid
Safety earth
connection
Protective earth
connection

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1.1.2 Unit open
USB connector
Ultrasonic
chord
connections
110-240V ac
power supply
connection
10-32V dc
power supply
connection
Ribbon cable
Display / keyboard
Input-output
connections
Serial link
connection
RS232/485
Jumpers for
cable shield
earthing
Protective cover
Mains area
Cable
hooks
Metalwork set back
to allow for
bending the cables
Display
assembly
Protective earth
connection
Lid
stay

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1.2 Nature of the equipment
The Uf 821 is an ultrasonic flow meter used to measure free surface flows using the transit time difference
method.
The measurement can be taken using an installation with up to 4 ultrasonic measurement chords. (One
chord designates the acoustic path between two probes, each alternating between emitting and receiving.
The use of several chords is above all required when the hydraulic conditions are poor and high accuracy is
required).
1.3 Dimensions and weight
Height: 100 mm
Width: 290 mm
Depth: 290 mm (with cable glands)
Weight: 3 kg (without wall mounting plate)
1.4 Operating environment
For internal or external use
Maximum altitude: 2,000 metres
Temperature: -20°C to +60°C
Hygrometry: 80 % maximum
Ventilation: no specific precautions
Weight: 3 kg (without wall mounting plate)
1.5 Physical protection
IP 67: Total protection against dust; protection against immersion for 30 minutes under 1m of water. This
protection is only valid if installation is done or audited by Ultraflux.
Sealing is only effective when the glands and/or grommets are in place and secured (tightening torque
checked).
Tightening torque for glands:
PG11 (cable diameters: 5 to 10 mm): 6 Nm
PG13.5 (cable diameters: 6 to 12 mm): 8 Nm

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1.6 Power supply
Range: from 10 to 32 VDC, or from 110 to 240 VAC 50-60Hz
Typical average consumption: < 6 W
Peak power consumption: < 15 W
Protection against polarity reversal
Transient overvoltage: overvoltage category II
Protection through resettable fuse
Overvoltage protection in accordance with standard EN 61000-4-5
Important safety-related notes:
A bipolar isolating switch with visible 2 A cut-off upstream of the device's power supply must be
installed. It is also recommended to install lightning arrestors on each of the unit's inputs/outputs
(requires specialist advice).
Whatever the means of power supply to the unit, it is recommended to install an isolating
mechanism close to it (emergency stop or other).
The flow meter is designed for fixed installation and must not be connected to the mains with a
plug-in cable (risk of an unidentified or poorly identified phase on a mains socket). It must be
connected to a terminal board on which the phase is correctly identified.
Crimp wiring lugs must be fitted on the exposed ends of the cable used to connect the mains to
the terminal board provided for this purpose (Ground + phase + neutral).
The terminal boards must only be connected or disconnected with the power off and the
equipment isolated.
During maintenance or installation operations, the protective ground (external ground connection
on the box) must be connected first and disconnected last.
Ultraflux accepts no responsibility for incidents which may occur following a failure to respect these
instructions.
1.7 Communication
The Uf 821 has a serial link which can be wired using RS232 or RS485 mode, as well as a USB port. For
this communication interface, the standard protocol chosen is the Slave JBUS (MODBUS). This enables the
unit to be connected to an instrumentation and control system or to a computer. Ultraflux provides PC
software compatible with Windows (XP or later) which is used to configure the machine, unload the logger
data and display the various values measured.
Please refer to the appendices for the JBUS/MODBUS configuration.
Note:
The 120 Ohm "termination" resistance is provided in the electronic card to connect the RS485 A/+
and B/- signals. To connect it, a jumper (strap) should be fitted to the serial link terminal board as
indicated on the label describing the connection.
A USB interface allows a computer to be connected for configuration. This may be accessed by
opening the flow meter cover.

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1.8 Inputs/Outputs
The Uf 821 provides the following options:
Up to 4 input/output single modules (or 2 double modules), made by Ultraflux in the factory only
(in accordance with the customer order).
Insulation of all the inputs and outputs. There is therefore no requirement for additional insulation
for the external equipment connected to them.
The Uf 821 allows 6 types of inputs/outputs to be used (maximum values in brackets):
Single module 1 active 4-20 mA insulated analogue output: current from 0 to 24 mA (24 V
maximum),
Single module 2 passive 4-20 mA insulated analogue inputs: 0 to 24 mA (50 mA maximum),
Single module 2 passive 0-10 V insulated analogue inputs (15 V maximum),
Single module 2 on/off outputs that can be used as frequency outputs (50 V - 10 mA maximum),
Single module 2 on/off inputs (5 V maximum),
Double module 2 PT100/PT1000 temperature inputs; 2-, 3- or 4-wire.
Notes:
Please refer to the descriptive sheet for each module for more details.
The probes (inputs) on the 4-20 mA loop must be powered from an external power supply.
1.9 Ultrasound chords
The Uf 821 enables the control of a maximum of 4 ultrasonic chords, or 8 probes. 8 cable glands are
provided to pass the probe cables through.
In principle, only ultrasonic probes supplied by Ultraflux may by used with the Uf 821. Ultraflux accepts no
responsibility for damage or incidents which may occur following a failure to respect these instructions. It is
however possible to use other makes of probe after consulting Ultraflux.
1.10 Navigation keys
The "Fn" (Function) key is used to go from one menu to another. This is used in particular to enter
the different "configuration" menus. The and keys are used to browse through the menus of
this mode.
Holding down the Fn key, or allowing approximately 1 minute to pass without using the keypad,
returns you to "measurement" mode.
Within any one menu, the and keys are used to change page. These keys may also have a
contextual function. If this is the case, a reminder of this function will be provided at the bottom of
the screen page, such as the choice of screen in measurement mode, which is displayed by default.
After powering on the Uf 821, the screen displays the page that has been selected as priority. To
choose this default screen, position yourself on it and define it by default by pressing on the "B"
key.

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To scroll through the measurement screens, use the and keys.
To access the other menus, press the "Fn" key, then successively press the key, or browse using
the and keys.
To enter a menu, press or .
To change page, press "A" or "B".
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 821 automatically returns to
"measurement" mode and to the display chosen as priority using "B".
For a given parameter, the value to be applied is defined using the (increase) and (decrease)
keys. Pressing and holding one of these two keys accelerates the increase or decrease.
1.11 Operating lights
Two LEDs are present on the front panel:
Blue measurement LED: indicates
whether or not the flow meter is in
measurement mode (as opposed to
configuration mode).
A flashing LED indicates normal operation.
An LED which is fixed on or off indicates abnormal or
interrupted operation.
Warning: the flow meter may be in measurement mode (inputs-outputs, function loggers) without the
probes being connected.
Red, orange or green
Communication LED: indicates the
status of the external communication
of the flow meter (serial link or USB).
Flashing green light for each dialogue on the serial link.
Long red flashing light on each dialogue error on the serial
link.
Fixed orange light when the flow calculation is in degraded
mode or when a related function is faulty.
Fixed red light when the flow calculation is faulty.
1.12 Screen
LCD: graphic (14 rows x 20 characters).
Backlighting: permanent or timed.

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1.13 Functions
Data recording: The flow meter is used to record the data measured (logger function). Up to 30
variables can be recorded (for example: average flow, minimum flow, maximum flow, water level).
A total of 530,000 readings can be recorded. The frequency and sequencing of the recordings can
be adjusted.
Echo display: It is possible to display the measurement echo for each chord, which allows you in
particular to check the quality of the measurement and directly view the effect of certain corrective
actions (positioning and alignment of the probes, adjustment of the settings, cleaning of the
probes, etc.).
Four flow volume totalisers which can count the positive flows, negative flows or total flows,
regardless of their sign.
Filtering of the measurement using a first-order filter allowing non-significant flow fluctuations
to be smoothed.
Storage of the measurement in memory in the event of a momentary loss of the echo (due, for
example, to the passing of air bubbles) or other faults (adjustable storage interval).
Deletion of the bottom of the scale if the flow is below a programmed value,
Zero readjustment if you have a full pipe with a strictly nil flow.
Function engine.
1.14 Performance of the flow meter
Uncertainty over measured speed: up to ±0.5 %.
Repeatability: up to 0.1 %.
Linearity: up to 0.1 %.
Typical uncertainty on the flow rate calculation: from 0.5 to 5 % depending on the application and
the number of chords.
Important: The accuracy of the measurement also depends on the accuracy with which the geometry of
the measuring point is measured, the dimensions of the probe pairs, the distance between the probes and
the length the wave has to travel between two probes. An inaccuracy on one of these values may
compromise the accuracy of the measurement.
1.15 Cleaning the flow meter
The box may be cleaned with water, diluted alcohol or detergent using a sponge or a soft cloth. Do not use
abrasive materials or solvents.

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1.16 Recycling the flow meter
In the context of decree no. 2005-829 dated 20 July 2005 and decree no. 2009-1139 dated 22 September
2009 relating to the collection, treatment and disposal of electrical and electronic equipment, batteries and
accumulators in France, Ultraflux delegates the responsibility for financial and also logistical recovery to the
user, who will manage their own waste. The separate collection and recycling of your waste at the time of
its disposal will help to preserve natural resources and guarantee recycling that is least harmful to the
environment and human health. For further information on the closest recycling centre to your site, contact
the local authority or disposal service for the waste material in question.
1.17 CE marking
The Uf 821 complies with CE certifications:
EN 55016-2-1
Measurement of conducted emissions Criterion A
EN 55016-2-3
Measurement of radiated emissions from 30 MHz –6 GHz
EN 61000-4-6
Immunity to induced conducted disturbances Criterion B
EN 61000-4-2
Immunity to electrostatic discharges Criterion B
EN 61000-4-3
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
IEC 60529
Degree of protection provided by enclosures (IP)
IEC 61010-1 (2010)
Electrical Safety –Low voltage directive (DBT)

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CHAPTER 2: SAFETY INSTRUCTIONS

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2.1 Using the flow meter
The flow meter, equipped with ultrasonic probes, is used to measure the flow of fluid (gas or liquid) in a
pipe. It is important to configure the flow meter correctly for its measurement results to be correct. You are
recommended to call on qualified staff from Ultraflux to ensure this is the case. This is strongly advised if
your equipment is used to regulate a process, intervene in a monitoring system, or in the case of other
applications for which an incorrect flow measurement could lead to risks.
In normal operation, the flow meter must not heat up to a level liable to cause burns. It is not necessary to
take any particular precautions to allow it to cool. 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.
The flow meter must not be used beyond the possibilities and specifications given in this manual. The flow
meter must be stored in a dry place, with the packaging provided by Ultraflux in order to protect the parts
liable to be damaged by a shock. It is advised to wear PPE (personal protective equipment) suitable for
handling and installing the apparatus.
The flow meter must only be modified or disassembled by Ultraflux personnel. Ultraflux accepts no
responsibility should this rule not be respected.
The connectors must only be connected or disconnected with the power off and the equipment isolated.
For wiring and unwiring operations relating to function or maintenance, the protective
ground must be connected first and disconnected last.
Where the unit is installed with a 90-260V ac power supply, the mains terminal block
protective cover should be closed and the two retaining screws tightened. The purpose of
this cover is to prevent any risk of electric shock in the event that the unit is handled when
live with the lid open (for example when a USB cable is connected for configuring or
reading data).
The flow meter is designed for fixed installation and must not be connected to the mains
with a plug-in cable (risk of an unidentified or poorly identified phase on a mains socket). It
must be connected to a terminal board on which the phase is correctly identified.
Ultraflux accepts no responsibility for incidents which may occur following a failure to respect these
instructions.

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2.2 Equipment connected to the flow meter
Any equipment connected to the unit must comply with its associated standard with regard to safety and
have SELV circuits (double insulation between primary and secondary). All equipment connected to the flow
meter must be disconnected before its protective ground is disconnected.
2.3 Symbols used on the flow meter
Symbols shown on the outside of the unit (labels or on the keyboard side):
User manual must be read before use.
The flow meter must be disconnected and the power switched off before opening the unit or
connecting or disconnecting inputs and outputs.
EC marking indicates compliance with European Community requirements.
Dangerous voltages in the unit.
Hazard risk; please refer to the precautions in these user instructions.
The unit's protective ground must be connected.
Do not throw in the bin. Follow the recycling procedure indicated in these instructions.

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Symbols marked on the internal panelling (labels):
Ground marking, Phase (L) and Neutral (N) on the protective cover of the mains terminal
board.
Positive, negative and Ground terminals near to the low voltage power supply connection
terminal board.
COM terminal board label: RS232 and RS485 wiring.
Descriptive label of terminals for connecting the probes:
S1 - S3 - S5 - S7: upstream chords; S2 - S4 - S6 - S8: downstream
chords.
Descriptive label of internal input and output module terminal
connections (according to the optional modules ordered by the
customer).
See paragraphs 3.6 & 3.8 on wiring of the above terminal boards.
2.4 Maintenance work on the flow meter
Work relating to maintenance on the flow meter must only be carried out by Ultraflux staff (SAV) and using
only parts supplied by Ultraflux (*).
Only operations relating to installation and start-up may be carried out without the intervention of Ultraflux:
-attachment (to wall) of the flow meter,
-connection of the equipment ground,
-connection of the probes,
-wiring of the inputs and outputs (**),
-wiring of the COM port (RS232 / RS485),
-connection of power supply,
-communication of the unit via its USB port.
(*) Except for consumables used to attach to the wall (bolting), the connection of external items connected
to the unit (cables and support brackets, apart from the probe cables as these are supplied with the probes
delivered by Ultraflux).
(**) The number and type of inputs and outputs available correspond to the optional modules fitted during
production of the Uf 821 by Ultraflux, depending on the options ordered by the customer.

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2.5 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 : ultrafl[email protected]
Tel.: [phone]
Fax: [phone]
2014 ULTRAFLUX S.A.

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NT UF 821 CO GB (a) / April 2014
CHAPTER 3: INSTALLATION AND WIRING

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3.1 General
The Uf 821 casing presents no particular danger to the user. Depending on the environment where the unit
is installed, it is however recommended that you wear personal protection equipment during installation,
including: gloves, safety boots, impact-resistant glasses.
It is recommended that you follow the installation method below, to avoid any risk of injury.
Installation must be done by or inspected by Ultraflux to ensure that the unit is water-tight and will operate
correctly.
Important: Avoid installing the Uf 821 close to a frequency converter. If this cannot be avoided,
interference filters must be installed. It is highly recommended that you contact us if this situation arises.
It is also recommended that you separate the measurement and power cable trays.
3.2 Wall mounting and space requirement
Make fixing holes in the wall which should be of sufficiently solid construction. First, attach the wall plate
supplied with the unit. The Uf 821 is then mounted on this plate, using the notches provided. Finally, lock
the unit vertically against the lower return on the wall plate, using the M4 screw supplied.
The dimensions shown are the drilling centres. Use 4 to 5 mm diameter screws and plugs suitable for the
type of material.
Locking screw
(M4)
Enclosure
retaining
pads

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NT UF 821 CO GB (a) / April 2014
Overall depth, including wall-mounting plate: 100 mm.
120 mm of clear space must be left below the glands to allow for connecting the cables.
3.3 Using the cabinet
The Uf 821 enclosure was designed for installation on a wall only, where wiring operations are simpler, and
following the order of work given below:
-Start by fixing the wall mounting plate.
-Attach the flow meter to it before opening the enclosure to do the wiring.
-First of all, connect the protective earth.
-Remove the lid screws and open the enclosure to the desired angle (the return spring on the lid stay
will hold it in position).
-Pass the various cables through the cable glands.
-Connect the cables to the various terminal blocks (disconnect them to make the work easier).
-Secure the cables using ties attached to the inside of the metalwork.
-Close the lid and tighten the fixing screws (tightening torque recommended to obtain an IP67 seal:
200 Nxcm.
-Tighten the cable glands to the torque indicated in section 1.4 "Sealing".