wtw visoturb 700 iq User manual

TetraCon®700 IQ
ba55322e03 12/2002
Operating Manual
IQ SENSOR NET conductivity sensor
Luggage Point WRP Water Reclamation (TetraCon 700 IQ) Vendor Manual
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Active: 04/02/2008
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Accuracy when going to
press The use of advanced technology and the high quality standard of our instruments are the result of continuous development. This may result
in differences between this operating manual and your instrument.
Also, we cannot guarantee that there are absolutely no errors in this
manual. Therefore, we are sure you will understand that we cannot
accept any legal claims resulting from the data, figures or descriptions.
Note
The latest version of the present operating manual can be found in the
Internet under www.WTW.com.
Copyright ©Weilheim 2002, WTW GmbH & Co. KG
Reprinting - even as excerpts - is only allowed with the explicit written
authorization of WTW GmbH & Co. KG, Weilheim.
Printed in Germany.
Luggage Point WRP Water Reclamation (TetraCon 700 IQ) Vendor Manual
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TetraCon® 700 IQ List of contents
0 - 1
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1 How to use this component operating manual . . . . . . . . 1-1
1.2 Structure of the TetraCon® 700 IQ conductivity sensor . 1-2
1.3 Recommended fields of application . . . . . . . . . . . . . . . .1-2
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . .2-2
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
3.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.3 Commissioning / Getting the sensor ready for
measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.4 Carrying out the settings for the sensor on the
terminal of the IQ SENSOR NET system . . . . . . . . . . . . .3-3
4 Measuring / Operation . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 Application-dependent settings . . . . . . . . . . . . . . . . . . .4-2
4.2.1 General information . . . . . . . . . . . . . . . . . . . . . . 4-2
4.2.2 Determining the cell constant in a user-specific
measuring environment . . . . . . . . . . . . . . . . . . . 4-3
5 Maintenance, cleaning, disposal,
and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
5.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.3 Recommended accessories . . . . . . . . . . . . . . . . . . . . . .5-2
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.1 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
7.2 Measurement conditions . . . . . . . . . . . . . . . . . . . . . . . .7-1
7.3 Characteristic data on delivery . . . . . . . . . . . . . . . . . . . . 7-2
8 Indexes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1 Explanation of the messages . . . . . . . . . . . . . . . . . . . . .8-1
8.1.1 Error messages . . . . . . . . . . . . . . . . . . . . . . . . .8-1
8.2 Status info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
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List of contents TetraCon®700 IQ
0 - 2
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TetraCon®700 IQ Overview
1 - 1
1Overview
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 operatingmanualhas a modular structure like the
IQ SENSOR NET system itself. It consists of a system operating manual
and the operating manuals of all the components used.
Please file this component operating manual in the ring binder of the
system operating manual.
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Overview TetraCon®700 IQ
1 - 2
1.2 Structure of the TetraCon®700 IQ conductivity sensor
Fig. 1-2 Structure of the TetraCon® 700 IQ conductivity sensor
1.3 Recommended fields of application
The TetraCon®700 IQ conductivity sensor is suitable for stationary
measurements in water/wastewater applications.
Characteristics
of the sensor
TetraCon®700 IQ
The principle of the measurement method makes it possible to avoid
influences from primary or secondary polarization effects, which ensu-
res a high degree of measuring accuracy.
Amodernepoxy sealingtechniquereducesthechancesofbreakageof
the sensor in the rough industrial environment.
1 Shaft
2 Plug head connector
3 Voltage electrodes
4 Temperature sensor
5 Current electrodes (ring)
2
3
54
5
1
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TetraCon®700 IQ Safety
2 - 1
2 Safety
This component operating manual contains special instructions that
must be followed during the operation of the TetraCon®700 IQ conduc-
tivity sensor. Thus, it is essential to read this component operating
manual before carrying out any work using this sensor. In addition to
this manual, the SAFETY chapter of the IQ SENSOR NET system opera-
ting manual must be followed.
Always keep this component operating manual together with the sys-
tem operating manual and all other component operating manuals in
the vicinity of the IQ SENSOR NET system.
Special user
qualifications The sensor was developed for applications in online measuring techno- logy-essentiallyinthefieldofwastewatertreatment.Thus,weassume
that the operators are familiar with the necessary precautions to take
when dealing with chemicals as a result of their professional training
and experience.
General safety
instructions The individual chapters of this operating manual use the following safety labels to indicate different levels of danger:
Warning
indicatesinstructionsthatmustbefollowedpreciselyinordertoprevent
serious dangers to persons.
Caution
indicates instructions that must be followed precisely in order to avoid
slight injuries or damage to the instrument or the environment.
Other labels
Note
indicates instructions that draw your attention to special features.
Note
indicates cross-references to other documents, e.g. operating manu-
als.
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Safety TetraCon®700 IQ
2 - 2
2.1 Authorized use
The authorized use of the TetraCon®700 IQ comprises its use as a
conductivity sensor in the IQ SENSOR NET.
The technical specifications given in chapter 7 TECHNICAL DATA must
be observed. Only operation according to the instructions in this opera-
ting manual is authorized.
Any other use is considered to be unauthorized. Unauthorized use
invalidates any claims with regard to the guarantee.
Caution
Only connect and operate the sensor together with IQ SENSOR NET
accessories.
2.2 General safety instructions
The sensor left the factory in a safe and secure technical condition.
Function and
operational safety The failure-free function and operational safety of the sensor is only guaranteed if the generally applicable safety measures and the special
safety instructions in this operating manual are followed during its use.
The failure-free function and operational safety of the sensor is only
guaranteed under the environmental conditions that are specified in
chapter 7 TECHNICAL DATA.
The specified temperature range (chapter 7 TECHNICAL DATA) must be
maintained during the application and transport of the sensor. Protect
the sensor, particularly against frost or overheating.
Caution
The sensor may only be opened by specialists authorized by WTW.
Luggage Point WRP Water Reclamation (TetraCon 700 IQ) Vendor Manual
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TetraCon®700 IQ Safety
2 - 3
Safe operation If safe operation is no longer possible, the sensor must be taken out of
operation and secured against inadvertent operation.
Safe operation is no longer possible if the sensor:
lhas been damaged in transport
lhas been stored under adverse conditions for a lengthy period of
time
lis visibly damaged
lno longer operates as described in this manual.
If you are in any doubt, contact the supplier of your sensor.
Obligations of the
operator The operator of the sensor must ensure that the following rules and regulations are followed when dealing with hazardous substances:
lEEC directives for protective labor legislation
lNational protective labor legislation
lSafety regulations
lSafety data sheets of the chemical manufacturer.
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Safety TetraCon®700 IQ
2 - 4
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TetraCon®700 IQ Commissioning
3 - 1
3 Commissioning
3.1 Scope of delivery
lTetraCon®700 IQ
lThe sensor is fitted with protective caps
lOperating manual.
3.2 Installation
Connection cable The SACIQ sensor connection cable is requiredto connect the sensor.
Information on this and other IQ SENSOR NET accessories is given in
the WTW catalog and in the Internet.
Note
How to connect the SACIQ sensor connection cable to the terminal
strip of an MIQ module is described in chapter 3 INSTALLATION of the
IQ SENSOR NET system operating manual.
Are the plug
connections dry? Before connecting the sensor and sensor connection cable, please make sure that 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. Use a sen-
sor holder or armature.
Information on this and other IQ SENSOR NET accessories is given in
the WTW catalog and in the Internet.
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Commissioning TetraCon®700 IQ
3 - 2
Connecting the sensor
to the sensor
connection cable
Fig. 3-1 Connecting the sensor
3.3 Commissioning / Getting the sensor ready for measu-
ring
1Take the protective caps off the plug connections of the sensor
and the SACIQ sensor connection cable and keep them safe.
2 Plug the jack of the SACIQ sensor connection cable onto the
plug head connectorof the sensor. Atthe same time, rotate the
socket so that the pin in the plug head connector (1) clicks into
one of the two holes in the jack.
3Then, screw the coupling ring (2) of the sensor connection
cable onto the sensor up to the stop.
1Pull the protective cap off the sensor.
2 Enter a name for the sensor on the terminal of the measuring
systemin theEditlistofsensorsmenu (seechapterOPERATION
of the system operating manual).
3Carry out the settings for the sensor on the terminal of the
measuring system (see section 3.4).
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TetraCon®700 IQ Commissioning
3 - 3
3.4 Carrying out the settings for the sensor on the
terminal of the IQ SENSOR NET system
The following settings can be carried out for the sensor:
Menu item Possible settings Explanations
Measuring mode lConductivity
lSalinity Measuredvariableon the measured value
display.
Measuring range at
Measuring mode
Conductivity
l0 ... 500 mS/cm
l0 ... 200.0 mS/cm
l0 ... 20.00 mS/cm
l0 ... 2000 µS/cm
l0 ... 200.0 µS/cm
l0 ... 20.00 µS/cm
lAutoRange
These measuring ranges are available for
selection. If the AutoRange menu item is
selected, the measurement range selec-
tion and switchover is made automatically.
Measuring range in
Measuring mode
Salinity
0..70 The measuring range is permanently set.
Temperature mode l°C
l°FUnit of the measured temperature values
(Celsius, Fahrenheit).
Temp.
compensation
lnone
lnonlinear
llinear with setting
lFor natural waters (groundwater, sur-
face water, drinking water),
salinity (seawater) according to IOT
lOther aqueous measuring mediums
Temp.
compensation linear 0.5 ... 3.0 %/K Factor for the linear temperature compen- sation. This menu item only appears if the
linear temperature compensation is set.
Reference temp. lTref20 (20 °C)
lTref25 (25 °C) The reference temperature is the basis for
calculating the temperature compensa-
tion.
Cell constant 0.825 ... 1.009 cm-1 Here you can set the cell constant if this is
necessary for a special application, e.g.
when using a flow-thru vessel.
Temp. adjustment l-1.5 ... +1.5 K Here you can balance the temperature
sensor in the sensor against a reference
temperature measurement.
Luggage Point WRP Water Reclamation (TetraCon 700 IQ) Vendor Manual
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Commissioning TetraCon®700 IQ
3 - 4
Carrying out settings
Fig. 3-2 140 - Settings of sensors and diff. sensors
Save and quit The system confirms the saving of the set-
tings and the display switches to the next
higher level.
Quit The display switches to the next higher
level without saving the new settings.
1Switch to the measured value display with m.
2 Open the Settings menu with s.
3Select and confirm the menu item Settings of sensors and diff.
sensors -> column Measuring range with dand g.
4 Select an entry with d.
5Confirm the selection with g.
The settings of the sensor are displayed.
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TetraCon®700 IQ Commissioning
3 - 5
Fig. 3-3 Settings menu TetraCon®700 IQ
6Make the sensor settings with dand confirm them with g.
7 Select the Save and quit menu item with dand confirm g.
The new settings are stored in the sensor.
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Commissioning TetraCon®700 IQ
3 - 6
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TetraCon®700 IQ Measuring / Operation
4 - 1
4 Measuring / Operation
4.1 Measuring
Warning
Contact with the sample can lead to danger to the user! Depending on
the type of sample, suitable protective measures must be taken (pro-
tective clothing, protective goggles, etc.).
Note
Please make sure that the sensor is surrounded by a gap of at least
5 cm at the base and sides (boundary fields) when measuring at the
electrodes. If the gap is less than that, the cell constant changes. This
leads to inexact measurement results.
Fig. 4-1 Distance of the sensor from the edge
1Immerse the sensor in the measuring medium.
2 Read the measured value.
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Measuring / Operation TetraCon®700 IQ
4 - 2
Fig. 4-2 Example of the display for the measured value display
4.2 Application-dependent settings
4.2.1 General information
The TetraCon®700 IQ conductivity sensor is stable over the long term.
When being used for the authorized use of the sensor in water/waste-
water applications, it is immediately ready for use.
Note
Normally, the conductivity measuring cell does not age. Special
measuring mediums (e.g. strong acids and bases, organic solvents) or
temperatures that are too high may considerably reduce its lifetime or
lead to damage. No warranty claims can be made for mechanical
damage or any failure caused by these types of measuring mediums.
Adapting the cell
constant to the
installation location
In the case of special installation conditions, it may be necessary to
adapt the cell constant (due to the influence of the measuring environ-
ment, e.g. of boundary fields).
Note
The cell constantis stored in the controller. It is automatically allocated
to the substitute sensor when the sensor is exchanged.
Cell constants with
WTW installation
accessories
In chapter 7 TECHNICAL DATA of this operating manual you will find the
correctvaluestoset for someproductsoftheWTW accessoryprogram
that require a correction of the cellconstant (if it is possible to give fixed
valuesatall).Ifnecessary,specialinstallationrecommendationsforthe
TetraCon®700 IQ can be found in the accessory operating manual. In
case of doubt it is necessary to determine the cell constant according
to section 4.2.2.
Luggage Point WRP Water Reclamation (TetraCon 700 IQ) Vendor Manual
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TetraCon®700 IQ Measuring / Operation
4 - 3
Note
The setting of the cell constant is made in the setting menu of the sen-
sor according to section 3.4.
4.2.2 Determining the cell constant in a user-specific measuring
environment
1Immerse theoperable conductivity sensor in the test sample in
the measuring environment and wait until the measured value
is stable.
2 Read the conductivity on the display and note it down (-> S
SS
SD).
3Take a representative sample simultaneously with the conduc-
tivity measurement and from the immediate vicinity of the sen-
sor if possible.
4 Determine the conductivity of the sample without the influ-
ence of boundary fields (-> S
SS
SX). The measurement can, for
example, be performed as follows:
lMeasuring in the laboratory using a laboratory conductivity
measuring cell
lMeasuring using the TetraCon®700 IQ while observing the
bottom and lateral distances according to section
4.1 MEASURING.
Attention: Set the same procedure for the temperature com-
pensation as for measuring the S
SS
SD!
5Read and note down the currently set cell constant in the set-
ting menu of the sensor (see section 3.4) (-> KA).
6 Calculate the new cell constant KNaccording to:
7Set and store the new cell constant KN(see section 3.4).
KN=(SX/SD)·KA
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Measuring / Operation TetraCon®700 IQ
4 - 4
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