Xylem NiCaVis 705 IQ Operating Manual
OPERATING MANUAL
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NiCaVis 705 IQ
OPTICAL SENSOR FOR NITRATE AND CARBON SUM PARAMETERS
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NiCaVis 705 IQ
Copyright © 2017 Xylem Analytics Germany GmbH
Printed in Germany.
NiCaVis 705 IQ Contents
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Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 How to use this component operating manual . . . . . . . . . . . . . 5
1.2 Field of application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Measuring principle of the sensor NiCaVis 705 IQ . . . . . . . . . . 6
1.4 Structure of the sensor NiCaVis 705 IQ . . . . . . . . . . . . . . . . . . 7
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.1 Safety information in the operating manual . . . . . . . . . 8
2.1.2 Safety signs on the product . . . . . . . . . . . . . . . . . . . . . 8
2.1.3 Further documents providing safety information . . . 8
2.2 Safe operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.2 Requirements for safe operation . . . . . . . . . . . . . . . . . 9
2.2.3 Unauthorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 IQ SENSOR NET system requirements . . . . . . . . . . . . . . . . . . . 10
3.2 Scope of delivery of the NiCaVis 705 IQ . . . . . . . . . . . . . . . . . 10
3.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3.1 Mounting the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3.2 Mounting the shock protectors . . . . . . . . . . . . . . . . . . 13
3.3.3 Connecting the sensor to the IQ S
ENSOR NET . . . . . . 14
3.4 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.4.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.4.2 Sensor structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.4.3 Settings for the main sensor . . . . . . . . . . . . . . . . . . . . 18
3.4.4 Settings for virtual sensors . . . . . . . . . . . . . . . . . . . . . 21
4 Measurement / Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1 Determination of measured values . . . . . . . . . . . . . . . . . . . . . 23
4.2 Measurement operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3.2 User calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.3.3 Sensor check/
Zero adjustment
. . . . . . . . . . . . . . . . . . 31
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5 Maintenance and cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
5.2 Sensor cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.2.1 Cleaning agents and accessories . . . . . . . . . . . . . . . . 37
5.2.2 General steps to be taken . . . . . . . . . . . . . . . . . . . . . . 38
5.2.3 Basic cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
5.2.4 Cleaning the measuring gap . . . . . . . . . . . . . . . . . . . . 40
6 Spare parts, maintenance equipment, accessories . . . . . . . . 41
7 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
8.1 Measurement characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 46
8.2 Application characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8.3 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8.4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
9 Indexes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
9.1 Explanation of the messages . . . . . . . . . . . . . . . . . . . . . . . . . .50
9.1.1 Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
9.1.2 Informative messages . . . . . . . . . . . . . . . . . . . . . . . . . 53
9.2 Status info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
10 Appendix: Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
NiCaVis 705 IQ Overview
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1 Overview
1.1 How to use this component operating manual
Structure of the
IQ SENSOR NET
operating manual
Fig. 1-1 Structure of the
IQ SENSOR NET operating manual
The IQ SENSOR NET operating manual has a modular structure like the IQ SENSOR NET
itself. It consists of a system operating manual and the operating manuals of all
the components used.
Please file this component operating manual into the ring binder of the system
operating manual.
IQ Sensor Net Operating Manual
System
Operating
Manual
(Ring Binder)
IQ Sensor
Operating
Manual
MIQ Module
Operating
Manual
MIQ Terminal
Operating
Manual
Component Operating Manuals
Overview NiCaVis 705 IQ
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1.2 Field of application
The NiCaVis 705 IQ is an online sensor for the on-site determination of nitrate
and carbon sum parameters in waste water treatment plants.
The range of application comprises control, feedback control and monitoring.
Measuring location
Ultrasound cleaning
system
The ultrasound cleaning system ensures low maintenance and long-term reliable measurement operation.
The ultrasound source integrated in the sensor excites the measurement
windows to produce vibrations in the ultrasound range. The
movement of the surface as a result of this prevents the growth of
pollution in almost all cases and, thus, ensures reliable measured
values during continuous operation.
Compressed air
cleaning (option)
The sensor is designed to be equipped with an additional compressed air-driven
cleaning system, which supports the ultrasound cleaning system as necessary.
1.3 Measuring principle of the sensor NiCaVis 705 IQ
The sensor operates according to the measuring principle of UV-VIS- spectrometry.
Any substance present in a measuring solution attenuates a light beam that
penetrates the measuring solution. The attenuation (absorbance) of the light
beam is measured for individual wavelengths.The wavelength dependent distribution produces the absorbance spectrum.
The wavelength range where an absorbance occurs is characteristic of the
substance.The extent of the absorbance depends on the amount of the
substance.
The influence of typical interference matrix variants occurring at municipal waste
water treatment plants can be eliminated by including the entire absorbance
spectrum.
With this measuring principle, measuring does not take place continuously but
at intervals.
NiCaVis 705 IQ Outlet
NiCaVis 705 IQ Overview
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1.4 Structure of the sensor NiCaVis 705 IQ
The sensor has a light source (1), a measuring gap (3) to enable the contact of
light with the measuring solution, and a detector (5) to measure the attenuated
light beam.
The sender of the optical system (2) directs a light beam, the measuring beam
(6), through the measuring solution and a second light beam, the reference
beam (8), over a distance without measuring solution. The test sample is
between both measurement windows (3) in the measuring gap.
The receiver of the optical system (4) directs the measuring beam and reference
beam to the detector. In the detector, the light is received by fixed photo diodes.
Fig. 1-2 Structure of the sensor
1 Light source
2 Sender of the optical system
3 Measuring gap between the measurement windows
4 Receiver of the optical system
5 Detector
6 Measuring beam
7 Reference beam
8 Connection for the optional compressed air cleaning system
7
6
34
8
21 5
Safety NiCaVis 705 IQ
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2 Safety
2.1 Safety information
2.1.1 Safety information in the operating manual
This operating manual provides important information on the safe operation of
the product. Read this operating manual thoroughly and make yourself familiar
with the product before putting it into operation or working with it. The operating
manual must be kept in the vicinity of the sensor so you can always find the information you need.
Important safety instructions are highlighted in this operating manual. They are
indicated by the warning symbol (triangle) in the left column. The signal word
(e.g. "CAUTION") indicates the level of danger:
NOTE
indicates a situation where goods might be damaged if the actions mentioned
are not taken.
2.1.2 Safety signs on the product
Note all labels, information signs and safety symbols on the product. A warning
symbol (triangle) without text refers to safety information in this operating
manual.
2.1.3 Further documents providing safety information
The following documents provide additional information, which you should
observe for your safety when working with the measuring system:
Operating manuals of other components of the IQ S
ENSOR NET system
(power packs, controller, accessories)
Safety datasheets of calibration and maintenance equipment (e.g. cleaning
solutions).
WARNING
indicates a possibly dangerous situation that can lead to serious (irreversible) injury or death if the safety instruction is not
followed.
CAUTION
indicates a possibly dangerous situation that can lead to slight
(reversible) injury if the safety instruction is not followed.
NiCaVis 705 IQ Safety
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2.2 Safe operation
2.2.1 Authorized use
The authorized use of the NiCaVis 705 IQ consists of its use as a sensor in the
IQ S
ENSOR NET. Only the operation and running of the sensor according to the
instructions and technical specifications given in this operating manual is authorized (see chapter 8 T
ECHNICAL DATA). Any other use is considered unauthor-
ized.
2.2.2 Requirements for safe operation
Note the following points for safe operation:
The product may only be operated according to the authorized use specified
above.
The product may only be supplied with power by the energy sources men-
tioned in this operating manual.
The product may only be operated under the environmental conditions men-
tioned in this operating manual.
The product may not be opened.
2.2.3 Unauthorized use
The product must not be put into operation if:
it is visibly damaged (e.g. after being transported)
it was stored under adverse conditions for a lengthy period of time (storing
conditions, see chapter 8 T
ECHNICAL DATA).
Commissioning NiCaVis 705 IQ
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3 Commissioning
3.1 IQ SENSOR NET system requirements
Software versions of
the controller and
terminal
components
The operation of the NiCaVis 705 IQ requires the following software versions in
the IQ S
ENSOR NET:
For cleaning with
compressed air via
a relay
3.2 Scope of delivery of the NiCaVis 705 IQ
The following parts are included in the scope of delivery:
SensorNiCaVis 705 IQ
Sensor sleeve
Shock protectors
Operating manual
DIQ/S 28X Controller software: Version 3.72 or higher
DIQ/S 182 Controller software: Version 3.45 or higher
MIQ/MC3 Controller software: Version 3.72 or higher
MIQ/MC2 Controller software: Version 3.72 or higher
MIQ TC 2020 XT Controller software: Version 3.72 or higher
DIQ/S 28X Controller software: Version 3.72 or higher
DIQ/S 182 Software version: Version 3.45 or higher
MIQ/CR3 Software version: Version 2.90 or higher
MIQ/R6 Software version: Version 2.90 or higher
MIQ/CHV PLUS Software version: Version 2.90 or higher
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3.3 Installation
3.3.1 Mounting the sensor
NOTE
The sensor is an optical precision instrument that should be protected against
shocks. Make sure that the distances to the wall, bottom and other installation
surroundings are sufficient. If necessary, protect the sensor from hitting with the
protective ring provided. Mount any fixing elements only on the stable metal
shaft.
NOTE
Always make sure the surface of the enclosure is not damaged by sharp-edged
objects. The enclosure of the sensor may not touch any metallic objects in order
to prevent contact corrosion.
NOTE
Do not suspend the sensor on the sensor connection cable. Risk of cable break
and water penetration at the cable gland.
A wide range of mounting accessories is available for the installation of the
NiCaVis 705 IQ (see chapter 6 S
PARE PARTS, MAINTENANCE EQUIPMENT, ACCES-
SORIES). Thus, all prevalent ways of mounting are possible.
Generally, observe the following general rules
when mounting the sensor at the
measuring location:
Horizontal
installation
When mounting the sensor horizontally, the measuring gap opening should be
on the side. Thus, any air bubbles can escape upward after cleaning and no sediment can collect in the measuring gap. The sensor should be aligned in parallel
with the flow direction.
Fig. 3-1 Horizontal installation
Measuring gap opening
Flow direction
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Vertical installation For vertical installation, mount the sensor in a position that allows interfering ele-
ments in the measuring gap to escape with the current. In the case of vertical
installation, the minimum flow rate is 0.2 m/s so the measuring gap is kept clean
optimally.
Fig. 3-2 Vertical installation
Protection against
shocks
When installing the sensor, always make sure it cannot knock against a wall or
another obstacle. Make sure the safety margins are sufficient (e. g. with suspended mounting).
Mount the enclosed shock protectors (see section 3.3.2). Their soft rubber compound absorbs hard impacts.
Fig. 3-3 Sensor with mounted shock protectors
Flow direction
Measuring gap opening
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3.3.2 Mounting the shock protectors
The shock protectors consist of two rings, a cap and four cable ties. To mount
the shock protectors, proceed as follows:
Fig. 3-4 Mounting the shock protectors
1. Plug the cap (pos. 2 in Fig. 3-4) on one of the two rings (pos.1).
2. Put the assembled unit on the sensor end and fix it with 2 cable
ties (pos. 3) as shown in Fig. 3-4.
3. Put the second ring on the cable end of the sensor and fix it
with the remaining two cable ties in the same way.
1
3
2
Sensor with mounted
shock protectors
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3.3.3 Connecting the sensor to the IQ SENSOR NET
Connection cable A sensor connection cable of the SACIQ or SACIQ SW type is required to
connect the sensor. The cable is available in different lengths. Compared to the
standard model SACIQ, the SACIQ SW sensor connection cable is optimized
regarding its corrosion resistance in seawater and brackish water and adapted
for use in conjunction with the NiCaVis 705 IQ. Information on this and other
IQ S
ENSOR NET accessories is given in the WTW catalog and on the Internet.
Are the plug
connections dry?
Before connecting the sensor and sensor connection cable, please make sure
the plug connections are dry. If moisture gets into the plug connections, first dry
the plug connections (dab them dry or blow them dry using compressed air).
NOTE
Do not suspend the sensor on the sensor connection cable but use the suitable
mounting equipment. Information on this and other IQ S
ENSORNET
accessories
is given in the WTW
catalog and on the Internet.
How to connect the SACIQ (SW) sensor connection cable to the terminal strip of an MIQ module is described in chapter 3 I
NSTALLATION
of the IQ S
ENSOR NET system operating manual.
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Connecting the
sensor to the sensor
connection cable
Fig. 3-5 Connect the sensor
1. Take the protective caps off the plug connections of the sensor and the
SACIQ (SW) sensor connection cable and keep them safe.
2. Plug the socket of the SACIQ (SW) sensor connection cable onto the
plug head connector of the sensor. At the same time, rotate the socket
so that the pin in the plug head connector (1) clicks into one of the two
holes in the socket.
3. Then screw the coupling ring (2) of the sensor connection cable onto
the sensor up to the stop.
SACIQ (SW)
1
2
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3.4 Initial commissioning
3.4.1 General information
Measuring location The sensor is prepared for operation in the outlet of the waste water treatment
plant and calibrated in the factory.
The sensor is immediately ready to measure.
Use calibration after
initial ommissioning
On the basis of a reference measurement ("laboratory value"), check whether
the default settings deliver sufficiently accurate measured values or whether you
want to carry out a user calibration (see section 4.3 C
ALIBRATION).
CAUTION
Never look into the measuring window or put objects into the
measuring window during operation! The emitted UV radiation
can damage the eyes!
In the case of authorized use, inadvertent eye contact with the
light beam is not possible.
How to adjust the settings is described in the following section (section 3.4.3).
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3.4.2 Sensor structure
The physical sensor is the sensor with the instrument or model designation,
NiCaVis 705 IQ. The physical sensor processes the measurement signal
(absorbance spectrum) and supplies up to 5 measurement results to the
IQ S
ENSOR NET. The measurement results are administrated like 5 sensors that
differ in hierarchy as follows:
Main sensor The sensor for nitrate measurement is the main sensor.
It registers on the system under the designation, NiCaVis 705 IQ and the series
number of the physical sensor.
Virtual sensors All other sensors for carbon measurement are virtual sensors.
You register on the system under the designation, NiCaVis 705 IQ and the
series number of the physical sensor.
Sensor overlapping
settings and
functions
Some settings and functions are sensor overlapping. Sensor overlapping settings are generally edited in the setting menu of the main sensor.
These are the most important sensor overlapping settings and functions:
Measuring location
Times of the measuring cycle
(
Meas. interval, Cleaning duration Air, Adjustment phase
etc.)
Signal smoothing
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3.4.3 Settings for the main sensor
Measuring cycle A measuring cycle consists of the cleaning procedure, the adjustment time for
the measuring system and the determination of the measured value. The following graphic demonstrates the relevant settings:
Fig. 3-6 Measuring cycle of the sensor
Carrying out
settings
Using <S>, switch from the measured value display to the main menu of the
settings. Then navigate to the setting menu (setting table) of the sensor. The
procedure is described in detail in your IQ S
ENSOR NET system operating
manual.
Default values are marked in bold.
Time
Adjustment time
Measurement
Measuring
cycle
Measuring interval
Cleaning
A change of the following settings will take some time (up to a few
minutes) until it can be seen in the measured value display:
Measuring mode
Measuring location
Number of N-sensors
Number of C-sensors
Further changes can only be made when the last changes are visible in the measured value display.
Menu item Settings Explanations
Measuring mode
NO3-N
NO3
The measured parameter is displayed
in the selected citation form.
When changing the
Measuring mode
setting, always check the
Measuring
location
setting.
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