wtw FDO 70x IQ Series User manual

ba75586e05 12/2011
FDO®70x IQ (SW)
Operating manual
Optical IQ SENSOR NET D.O. sensors
FDO®700 IQ
FDO®701 IQ
FDO®700 IQ
FDO®701 IQ SW

Copyright © 2016 Xylem Analytics Germany GmbH
Printed in Germany.

FDO®70x IQ (SW) Contents
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FDO®70x IQ (SW) - Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1 How to use this component operating manual . . . . . . . . 1-1
1.2 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.3 Recommended fields of application . . . . . . . . . . . . . . . . 1-3
1.4 Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
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 IQ SENSOR NET system requirements . . . . . . . . . . . . . . 3-1
3.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.4 Commissioning / Getting the instrument ready for
measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.5 FDO®70x IQ (SW) setting table . . . . . . . . . . . . . . . . . . 3-4
4 Measuring / Operation . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 Function check and user calibration . . . . . . . . . . . . . . . . 4-1
4.2.1 General information . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2.2 Function check . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.2.3 User calibration . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.2.4 Calibration history . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.2.5 Reactivating previous calibration data . . . . . . . 4-7
5 Maintenance, cleaning, replacement parts . . . . . . . . 5-1
5.1 General maintenance instructions . . . . . . . . . . . . . . . . . 5-1
5.2 Handling of the sensor cap . . . . . . . . . . . . . . . . . . . . . . 5-2
5.3 Exchanging the sensor cap . . . . . . . . . . . . . . . . . . . . . . 5-2
5.4 Cleaning the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.4.1 Exterior cleaning . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.4.2 Interior cleaning of sensor cap and
sensor head . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.5 Replacement parts and accessories . . . . . . . . . . . . . . . 5-5
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Contents FDO®70x IQ (SW)
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7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.1 General measurement characteristics . . . . . . . . . . . . . .7-1
7.2 Application conditions . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
7.3 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2
7.4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3
7.5 Technical data of the SC-FDO®700 . . . . . . . . . . . . . . . .7-4
7.6 Technical data of the SC-FDO®701 . . . . . . . . . . . . . . . .7-5
8 Indexes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1 Explanation of the messages . . . . . . . . . . . . . . . . . . . . .8-1
8.1.1 Error messages . . . . . . . . . . . . . . . . . . . . . . . . .8-1
8.1.2 Info messages . . . . . . . . . . . . . . . . . . . . . . . . . .8-3
8.2 Status info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-4

FDO®70x IQ (SW) Overview
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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 operating manual has 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 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 FDO®70x IQ (SW)
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1.2 Models
The FDO®70x IQ (SW) consists of a sensor basis equipped with differ-
ent sensor cap types, depending on the model:
Models
* Designation on the name plate in the plug head connector
The sensor cap primarily determines the measuring characteristics of
the sensor as a whole. Thus the sensor can be adapted to the measur-
ing job by exchanging the type of sensor cap. The specifications of the
individual sensor cap types are given in chapter 7 TECHNICAL DATA.
SW models Compared to the standard models, the sea water models of the sen-
sors (SW models) are optimized concerning their resistance to corro-
sion in sea water and brackish water.
FDO 700 IQ
®
SC-FDO 700
®
SC-FDO 701
®
Sensor basis
Sensor basis
Sensor cap:
FDO 700 IQ SW
®
Sensor model Sensor basis * Sensor cap
FDO®700 IQ FDO® 700 IQ SC-FDO®700
FDO®700 IQ SW FDO® 700 IQ SW SC-FDO®700
FDO®701 IQ FDO® 700 IQ SC-FDO®701
FDO®701 IQ SW FDO® 700 IQ SW SC-FDO®701

FDO®70x IQ (SW) Overview
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1.3 Recommended fields of application
Sensor model Recommended field of application.
FDO®700 IQ
FDO®
701IQ
Stationary measurements in water/wastewa-
ter applications.
FDO®700 IQ SW
FDO®701 IQ SW
Stationary measurements in seawater,
aquaculture.
The FDO®70x IQ SW is equipped with a
protective hood that is prepared for the con-
nection of the MSK FDO®CS cleaning set
for compressed air-driven sensor cleaning
(order information, see section
5.5 REPLACEMENT PARTS AND ACCESSORIES).

Overview FDO®70x IQ (SW)
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1.4 Structure
Structure
Fig. 1-2 Structure of the D. O. sensor (example: FDO®70x IQ)
Sensor cap with
memory chip
A memory chip is integrated in the sensor cap. The following data is
stored on the memory chip:
Type designation of the sensor cap
Series number
Data of the factory calibration
Intelligent membrane
(IQMC technology)
For each membrane the individual calibration values are determined by
a factory calibration and stored on the memory chip of the sensor cap,
ensuring maximum accuracy over the whole lifetime of the sensor.
1Shaft
2Plug head connector
3Fixing ring
4Sensor membrane
5Sensor cap with memory chip
6Gold-plated contact pins for memory chip
7Measurement window
8Temperature sensor and locking device
9Sensor head
67
8453
9
12

FDO®70x IQ (SW) Safety
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2 Safety
This component operating manual contains special instructions that
must be followed during the operation of the FDO®70x IQ (SW) D.O.
sensor. Thus, it is essential to read this component operating manual
before carrying out any work using this sensor. In addition to this man-
ual, the SAFETY chapter of the IQ SENSOR NET system operating man-
ual must be followed.
Always keep this component operating manual together with the sys-
tem operating manual and any other component operating manuals in
the vicinity of the IQ SENSOR NET system.
General safety
instructions
Safety instructions in this operating manual are indicated by the warn-
ing symbol (triangle) in the left column. The signal word (e.g. "CAU-
TION") indicates the danger level:
WARNING
indicates instructions that must be followed precisely in order to
prevent serious dangers to personnel.
CAUTION
indicates instructions that must be followed precisely in order to
avoid slight injuries to personnel or damage to the instrument or
the environment.
Other labels
Note
indicates notes that draw your attention to special features.
Note
indicates cross references to other documents, e. g. operating manu-
als.

Safety FDO®70x IQ (SW)
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2.1 Authorized use
The authorized use of the FDO®70x IQ (SW) comprises its use as a
D.O. sensor in the IQ SENSOR NET.
The technical specifications according to chapter 7 TECHNICAL DATA
must be observed. Only operation according to the instructions in this
operating 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 (chapter 7 TECHNICAL DATA) must be main-
tained during the operation 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. The only exceptions to this are the activities described in
chapter 5 MAINTENANCE, CLEANING, REPLACEMENT PARTS.

FDO®70x IQ (SW) Safety
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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:
has been damaged in transport
has been stored under adverse conditions for a lengthy period of
time
is visibly damaged
no 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 reg-
ulations are followed when dealing with hazardous substances:
EC directives for protective labor legislation
National protective labor legislation
Safety regulations
Safety data sheets of the chemical manufacturer.

Safety FDO®70x IQ (SW)
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FDO®70x IQ (SW) Commissioning
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3 Commissioning
3.1 Scope of delivery
Sensor, consisting of sensor basis and sensor cap
Operating manual.
3.2 IQ SENSOR NET system requirements
Software statuses of the
controller and terminal
components
The operation of the FDO®70x IQ (SW) requires the following software
versions in the IQ SENSOR NET:
Note
Operation with the SC-FDO®701 sensor cap requires software version
2.15 on the FDO®70x IQ (SW).
3.3 Installation
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. Com-
pared 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 FDO 70x
IQ SW. Information on this and other IQ SENSOR NET accessories is
given in the WTW catalog and on the Internet.
Note
How to connect the SACIQ (SW) sensor connection cable to the termi-
nal strip of an MIQ module is described in chapter 3 INSTALLATION of the
IQ SENSOR NET system operating manual.
MIQ/C184 (XT) Controller software: Version 2.66 or higher
Terminal software: Version 2.66 or higher
MIQ/MC Controller software: Version 2.66 or higher
MIQ/T 2020
(PLUS)
Terminal software: Version 2.66 or higher
IQ software pack Software version: 4.10 or higher

Commissioning FDO®70x IQ (SW)
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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. Use a sen-
sor holder or armature. Information on this and other IQ SENSOR NET
accessories is given in the WTW catalog and on the Internet.
Connecting the sensor
to the sensor
connection cable
Fig. 3-1 Connecting the sensor
1Take the protective caps off the plug connections of the sensor
and the SACIQ (SW) sensor connection cable and keep them
safe.
2 Plug the jack 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.
3Then screw the coupling ring (2) of the sensor connection
cable onto the sensor up to the stop.
SACIQ
1
2

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3.4 Commissioning / Getting the instrument ready for
measuring
Identification in the
IQ SENSOR NET
Both the sensor cap and sensor basis (sensor without cap) have a
series number of their own. The sensor has to be equipped with a sen-
sor cap for a successful login to the IQ SENSOR NET. The operable sen-
sor is displayed as follows in the list of sensors:
Commissioning steps
Model: Model designation of the sensor cap
(="SC FDO 70x")
Ser. no.: Series number of the sensor cap
Sensor name: The series number of the sensor basis is preset
here. You can change this entry as necessary by
entering a user-defined name.
1Pull the protective cap off the sensor.
2 If required, assign a user-defined name to the sensor (see rel-
evant IQ SENSOR NET system operating manual).
3When using IQ SENSOR NET without automatic air
pressure compensation the mean air pressure value or the
location altitude has to be entered (for more detailed informa-
tion see the relevant IQ SENSOR NET system operating man-
ual).
4 Set the sensor (see section 3.5).

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3.5 FDO®70x IQ (SW) setting table
Setting Selection/values Explanation
Measuring mode Concentration
Saturation
Unit of the measured value on the measured
value display.
Measuring range
Concentration
0 ... 20.00 mg/l
0 ... 20.00 ppm
These measuring ranges are available for
selection.
Measuring range
Saturation
0 ... 200.0 % The measuring range is set permanently.
Response time t90
 150 .. 300 s
(with SC-FDO®700)
or
 60 ... 300 s
(with SC-FDO®701)
Response time of the signal filter.
Depending on the sample matrix, the mea-
sured values may fluctuate more or less.
A signal filter in the sensor reduces the fluc-
tuation range of the measured value. The
signal filter is characterized by the Response
time t90. This is the time after
which 90 % of a signal change is displayed.
The setting range depends on the sensor
cap type.
Calibration Factory
calibration
 User calibration
 active
 abort
Determines which calibration data the mea-
sured value calculation will be based on. The
active calibration is displayed in the calibra-
tion history.
The selection, User calibration is only dis-
played if valid data of a User calibration is
stored in the sensor.
active indicates that the sensor is being cali-
brated.
If abort is selected, the active calibration is
canceled the next time the setting table is
quit with Save and quit.
Test
 active
 abort
active indicates that the sensor is being
checked.
If abort is selected, the active check is can-
celed the next time the setting table is quit
with Save and quit.
Temperaturmodus °C
°F
Unit of the measured temperature value
(Celsius, Fahrenheit).

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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 exact procedure is given in the relevant IQ SENSOR NET
system operating manual.
Temp. adjustment -1.5 K ... +1.5 K The temperature compensation enables the
temperature display to be balanced (shifting
of the zero point by ±1.5K).
Notes:
Due to the thermal capacity of the sensor,
it is necessary to place it in a container
with at least 2 liters of water.
Leave the sensor in this container for at
least 15 minutes while stirring
occasionally until the balancing can be
performed.
With temperature differences between the
water and sensor > 10 °C, leave the
sensor for at least 1 hour in this container
while stirring occasionally until the
balancing can be performed.
Salinity On
Off
Determines whether the entered salinity
should be taken into account.
Salinity input 2.0 ... 70.0 The entry of the salinity enables a salt con-
tent correction that compensates for the
effect of salt contents > 0.1 % on the oxygen
measurement.
The salt content correction is recommended
for measurements in salt-contaminated
wastewater (salinity ≥2.0 corresponding to a
conductivity of ≥3.4 mS/cm at a reference
temperature TREF = 20 °C).
Sensor cap data Do not download
Transmit to log
book
Generates a log book message with all data
stored in the sensor cap when the settings
are quit with Save and quit (see section 1.2).
When opening the menu again the setting is
reset to Do not download.
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.
Setting Selection/values Explanation

Commissioning FDO®70x IQ (SW)
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Note
For information on oxygen measurement in solutions containing salt,
see WTW application report no. 1193118.

FDO®70x IQ (SW) Measuring / Operation
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4 Measuring / Operation
4.1 Measuring
WARNING
Contact with the sample can be dangerous for the user!
Depending on the type of sample, suitable protective measures
must be taken (protective clothing, protective goggles, etc.).
Note the data given in section 7.2 APPLICATION CONDITIONS, especially
the minimum immersion depth of the sensor (> 50 mm). The measured
value is available immediately on submersing.
Note
If keeping the sensor clean is a problem, we recommend using the
compressed air-driven cleaning system with the CH cleaning head (see
section 5.5 REPLACEMENT PARTS AND ACCESSORIES).
4.2 Function check and user calibration
4.2.1 General information
Factory calibration The FDO®70x IQ (SW) is factory calibrated. In the recommended
application (see section 1.3 RECOMMENDED FIELDS OF APPLICATION), the
measuring characteristics of the sensor cap remain stable for the spec-
ified service life. Thus, a user calibration is not usually required.
When does a function
check or user calibration
make sense?
A function check or user calibration can be useful in the following spe-
cial cases:
If the measured values appear to be implausible and it is assumed
that the service life of the sensor cap is over
Routinely within the framework of the company quality assurance.
Check or calibration
medium
Select one of the following two variants depending on the air tempera-
ture at the calibration site:
With air temperatures over 5 °C, the function check and user calibra-
tion ideally take place in water vapor-saturated air. To do so, posi-
tion the sensor approx. 2 cm above a water surface, for example in
a narrow bucket or similar container with water. The membrane
must be clean and dry for this.

Measuring / Operation FDO®70x IQ (SW)
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With air temperatures under 5 °C we recommend performing the
function check and user calibration not in air but in air-saturated
water that has a higher temperature. You obtain air-saturated water
by pouring water several times in and out of two vessels so that it
sparkles.
4.2.2 Function check
A function check is the simplest way to determine whether the sensor
needs to be cleaned or user-calibrated.
Principle The function check can either be done in water vapor-saturated
air or in air-saturated water (see CHECK OR CALIBRATION MEDIUM on
page 4-1).
Steps Generally, a check on the IQ SENSOR NET is carried out as follows. Sys-
tem specific details are given in the respective IQ SENSOR NET system
operating manual.
2cm
1Switch to the measured value display with mand select the
FDO®70x IQ (SW) sensor.
2Press
c.
The next step switches on the maintenance condition for the
sensor. A corresponding message appears on the display.
3Confirm the note with g.
The maintenance condition is active.
4 Select the TEST procedure and press g.
5Put the sensor into the calibration position (water vapor-satu-
rated air or air-saturated water - see section 4.2.1).