YSI IQSENSORNET User Manual
IQ SENSOR NET
VARiON
Operating manual
®Plus
700 IQ
ba76000e01 01/2012
IQ SENSOR NET
Modular combination sensor
for ammonium and nitrate
VARiON
®Plus
700 IQ
Note
For the most recent version of the manual, please visit www.ysi.com
.
Contact YSI
1725 Brannum Lane
Yellow Springs, OH 45387 USA
Tel: +1 937-767-7241
800-765-4974
Email: environmental@ysi.com
Internet: www.ysi.com
Copyright © 2012 Xylem Inc.
2
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VARiON
®Plus
700 IQ Contents
VARiON
®Plus
700 IQ - Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1 How to use this component operating manual . . . . . . . . 1-1
1.2 Structure of the combination sensor
VARiON
1.3 Recommended fields of application . . . . . . . . . . . . . . . . 1-4
®Plus
700 IQ . . . . . . . . . . . . . . . . . . . . . . 1-2
2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 2-2
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1 Scopes of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2 IQ S
3.3 Notes on the handling of the electrodes . . . . . . . . . . . . . 3-3
3.4 Preparing the sensor for measurement . . . . . . . . . . . . . 3-5
3.5 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
ENSOR NET system requirements . . . . . . . . . . . . . . 3-2
3.3.1 Reference electrode . . . . . . . . . . . . . . . . . . . . . 3-3
3.3.2 Measurement electrodes and compensation
electrodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.4.1 Equipping the sensor with electrodes . . . . . . . . 3-5
3.4.2 Mounting the protective hood . . . . . . . . . . . . . . 3-7
3.4.3 Connecting the sensor to the IQ S
3.5.1 General information . . . . . . . . . . . . . . . . . . . . . 3-10
3.5.2 Setting table of the VARiON A (ammonium
sensor) . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3.5.3 Setting table of the VARiON N (nitrate sensor) 3-14
3.5.4 Setting table of the VARiON K (potassium
sensor) . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
ENSOR NET .3-8
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4 Matrix adjustment, check and calibration . . . . . . . . . 4-1
4.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 Matrix adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.2.1 General information on matrix adjustment . . . . 4-3
4.2.2 Carrying out the matrix adjustment . . . . . . . . . . 4-3
4.2.3 Result of the matrix adjustment . . . . . . . . . . . . . 4-5
4.2.4 Program extension . . . . . . . . . . . . . . . . . . . . . . 4-7
4.3 Check and calibration in standard solutions . . . . . . . . . . 4-8
4.3.1 General information on checking and
calibrating . . . . . . . . . . . . . . . . . . . . . . . . 4-8
0 - 1
Contents VARiON
4.3.2 Result of the check . . . . . . . . . . . . . . . . . . . . .4-10
4.3.3 Result of the calibration . . . . . . . . . . . . . . . . . .4-11
5 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1 Measuring operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
5.2 Factors affecting the measured value . . . . . . . . . . . . . . .5-1
6 Maintenance and electrode exchange . . . . . . . . . . . . 6-1
6.1 General maintenance notes . . . . . . . . . . . . . . . . . . . . . .6-1
6.2 Exterior cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
6.3 Exchanging the electrodes . . . . . . . . . . . . . . . . . . . . . . .6-5
6.4 Polishing the chloride electrode . . . . . . . . . . . . . . . . . . .6-6
7 Replacement parts and accessories . . . . . . . . . . . . . 7-1
7.1 Electrodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
7.2 General accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
®Plus
700 IQ
8 What to do if ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1 Interpretation of the drift voltage . . . . . . . . . . . . . . . . . . .8-1
8.2 Error causes and remedies . . . . . . . . . . . . . . . . . . . . . . .8-2
9 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
9.1 Measuring characteristics . . . . . . . . . . . . . . . . . . . . . . . .9-1
9.2 Application conditions . . . . . . . . . . . . . . . . . . . . . . . . . . .9-3
9.3 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-4
9.4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-4
9.5 Data of the VARiON
®Plus
electrodes . . . . . . . . . . . . . . .9-5
9.5.1 Response times . . . . . . . . . . . . . . . . . . . . . . . . .9-5
9.5.2 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-5
9.5.3 Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-5
10 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
10.1 Ordering & Technical Support . . . . . . . . . . . . . . . . . . .10-1
10.2 Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
11 Indexes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
11.1 Explanation of the messages . . . . . . . . . . . . . . . . . . . .11-1
11.1.1 Error messages . . . . . . . . . . . . . . . . . . . . . . . .11-1
11.1.2 Info messages . . . . . . . . . . . . . . . . . . . . . . . . .11-2
11.2 Status info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-3
0 - 2
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VARiON
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
®Plus
700 IQ Overview
Structure of the
IQ SENSOR NEToperating
manual
1Overview
1.1 How to use this component operating manual
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Fig. 1-1 Structure of the IQ SENSOR NET operating manual
The IQ SENSOR NET operating manual has a modular structure like the
IQ S
ENSOR NET 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.
1 - 1
Overview VARiON
123 4 5
1.2 Structure of the combination sensor
VARi ON
®Plus
700 IQ
®Plus
700 IQ
Electrodes For a VARiON
Automatic interfering
ions compensation
Fig. 1-2 Structure of the combination sensor VARiON
®Plus
700 IQ
1 Protective hood
2 Temperature probe
3 Electrode support with electrodes (sample equipment)
4 Sensor shaft
5 Plug head connector
®Plus
700 IQ combination sensor ready to measure, a
jointly used reference electrode and at least one ion sensitive electrode
for the main measured parameters (ammonium, nitrate) are required.
The electrodes are screwed into the electrode support. The electrode
support has four receptacles for this.
®Plus
The VARiON
700 IQ enables the automatic interfering ions
compensation for one main measured parameter. Thus the influence of
certain interfering ions due to measuring technique can be
automatically compensated for.
Interfering ions in water / waste water applications are mostly chloride
for nitrate measurement and potassium for ammonium measurement.
To determine the interfering ions concentration, another electrode
(compensation electrode) is mounted into a free receptacle.
Note
Information on the fundamentals of measuring with ion sensitive
electrodes are given in the YSI primer, I
ONLINE ANALYSIS.
Operating modes and
electrode equipment
1 - 2
Due to its modular structure, the VARiON
to various requirements (see table on the following page).
ON SELECTIVE MEASUREMENT IN
®Plus
700 IQ can be adapted
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VARiON
Ref
VARiON
®Plus
NH4
VARiON
®Plus
K
Blind plug
VARiON
®
Ref
(recess)
Ref
VARiON® Ref
VARiON
®Plus
NO3
VARiON
®Plus
Cl
Blind plug
Ref
VARiON® Ref
VARiON
®Plus
NH4
VARiON
®Plus
K
VARiON
®Plus
NO3
Ref
VARiON® Ref
VARiON
®Plus
NO3
VARiON
®Plus
Cl
VARiON
®Plus
NH4
Ref
VARiON
®Plus
NH4
Blind plug
Blind plug
VARiON
®
Ref
Ref
VARiON® Ref
VARiON
®Plus
NO3
Blind plug
Blind plug
Ref
VARiON® Ref
VARiON
®Plus
NH4
VARiON
®Plus
NO3
Blind plug
®Plus
700 IQ Overview
Notes:
The reference electrode has an extra receptacle marked by a recess.
The ion sensitive electrodes can be mounted in the remaining three
receptacles in any order. Empty receptacles have to be closed with the
VARiON
Nitrate measurement,
®
BP blind plug.
Operating mode Electrode equipment
Ammonium
measurement,
compensated
compensated
Ammonium
measurement,
compensated,
plus nitrate
measurement
Nitrate measurement,
compensated
plus ammonium
measurement
Ammonium
measurement
Nitrate measurement
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Ammonium
measurement,
nitrate measurement
1 - 3
Overview VARiON
®Plus
700 IQ
Calibration free
operation
Shielding of the
VARiON
®Plus
700 IQ
The VARiON
®Plus
700 IQ combination sensor is immediately ready to
measure after being equipped with electrodes. For precise
measurements, it is only necessary to adjust the electrodes to the
sample matrix ("matrix adjustment"). In the recommended application
(see section 1.3 R
ECOMMENDED FIELDS OF APPLICATION), the measuring
characteristics of the electrodes remain stable for their entire service
life. Thus, calibration is no longer required.
Possible changes of the sample matrix can be determined by
occasional comparison measurements (e.g. photometer) and
compensated for by a new matrix adjustment. The sensor does not
have to be taken out of the sample for this.
The VARiON
electrodes in conjunction with the
®Plus
700 IQ combination sensor and the corresponding
IQ SENSOR NET system form a
measuring system that is protected to a high degree against low and
high frequency interference as well as against the indirect effects of
lightning strikes.
1.3 Recommended fields of application
The VARiON
®Plus
700 IQ combination sensor is a sensor for the online
determination of ammonium ions and/or nitrate ions in water / waste
water applications. It supplements D. O. measurement in the aeration
tank of waste water treatment plants and enables an efficient process
control of nitrogen removal.
Note
More detailed information on measuring with ion sensitive electrodes is
given in the YSI primer, I
ANALYSIS.
ON SELECTIVE MEASUREMENT IN ONLINE
1 - 4
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VARiON
®Plus
700 IQ Safety instructions
2 Safety instructions
Special user
qualifications
General safety
instructions
This component operating manual contains special instructions that
®Plus
must be followed in the operation of the VARiON
700 IQ
combination 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 S
AFETY chapter of the IQ SENSOR NET
system operating manual must be followed.
Always keep this component operating manual together with the
system operating manual and any other component operating manuals
in the vicinity of the IQ S
The VARiON
®Plus
ENSOR NET system.
700 IQ combination sensor was developed for
applications in online measurement - essentially in the field of
wastewater treatment. Thus, we assume that the operators are familiar
with the necessary precautions to take when dealing with chemicals as
a result of their professional training and experience.
Safety instructions in this operating manual are identified by the
warning symbol (triangle) in the left column. The signal word (e. g.
"Caution") indicates the level of danger:
Warning
indicates instructions that must be followed precisely in order to
prevent serious dangers to persons.
Other labels
Caution
indicates instructions that must be followed precisely in order to
avoid slight injuries or damage to the instrument or the
environment.
Note
indicates notes that draw your attention to special features.
Note
indicates cross-references to other documents, e.g. operating
manuals.
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2 - 1
Safety instructions VARiON
2.1 Authorized use
®Plus
700 IQ
Function and
operational safety
The authorized use of the VARiON
in consists of its use as a sensor within the IQ S
®Plus
700 IQ with the electrodes built
ENSOR NET.
Please observe the technical specifications according to chapter 9
ECHNICAL DATA. Only operation according to the instructions given in
T
this operating manual is considered to be 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.
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 9 T
The specified temperature (chapter 9 T
ECHNICAL DATA.
ECHNICAL DATA) must be
maintained 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 YSI.
2 - 2
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VARiON
®Plus
700 IQ Safety instructions
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
regulations are followed when dealing with hazardous substances:
EEC directives for protective labor legislation
National protective labor legislation
Safety regulations
Safety data sheets of the chemical manufacturer.
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2 - 3
Safety instructions VARiON
®Plus
700 IQ
2 - 4
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VARiON
®Plus
700 IQ Commissioning
3 Commissioning
3.1 Scopes of delivery
YSI supplies the VARiON
®Plus
700 IQ in sets for different measuring
requirements. Each set contains the following components:
Unequipped sensor VARiON
®Plus
700 IQ. The electrode
receptacles are closed with blind plugs
Reference electrode, VARiON
®
Ref
Depending on the set, the suitable selection from the following
measurement and compensation electrodes:
– VARiON
– VARiON
– VARiON
– VARiON
®Plus
NH4 (ammonium electrode)
®Plus
K (potassium electrode for compensation)
®Plus
NO3 (nitrate electrode)
®Plus
Cl (chloride electrode for compensation)
Special socket wrench
Protective hood VARiON
®
700 IQ-SK
Potassium chloride solution for storing the reference electrode
Operating manual and YSI primer, I
ONLINE ANALYSIS.
ON SELECTIVE MEASUREMENT IN
Note
Information on the available sets is given in the YSI catalog and on the
Internet.
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3 - 1
Commissioning VARiON
3.2 IQ SENSOR NET system requirements
®Plus
700 IQ
Software statuses of the
controller and terminal
components
Operation of the VARiON
statuses in the IQ S
®Plus
700 IQ requires the following software
ENSOR NET, depending on the system:
DIQ/S 182 Software: Version 3.21
or higher
MIQ/MC Controller software: Version 2.83
or higher
IQ software pack Software: Version 5.00
or higher
3 - 2
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VARiON
Watering cap
Junction
Reference electrode
Nut
Sealing ring
®Plus
700 IQ Commissioning
3.3 Notes on the handling of the electrodes
Commissioning
The electrodes of the VARiON
®Plus
700 IQ combination sensor were
developed for the rough use in waste water treatment plants. They are,
however, precision parts that can be damaged by inappropriate use.
Therefore, exactly follow the instructions in the two following chapters.
3.3.1 Reference electrode
Fig. 3-1 Reference electrode with storing aids
In the delivery condition, the electrode is equipped with a watering cap
and a nut that protects the screw-in thread. The watering cap contains
3 mol/l potassium chloride solution. Before mounting, unscrew the
watering cap. Then, using the special hexagon key, unscrew the
electrode from the nut. Keep both storing aids in case you want to store
the electrode.
Caution
The junction of the reference electrode must not
dry up (follow notes on storage)
be damaged
be brought into contact with grease.
Notes on storage If you will not use the electrode for a longer period of time, screw the
electrode into the nut as far as it will go. Fill the watering cap to the brim
with 3 mol/l potassium chloride solution and tightly screw the watering
cap on the electrode by hand.
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3 - 3
Commissioning VARiON
Watering cap
Electrode
Nut
Sealing ring
3.3.2 Measurement electrodes and compensation electrodes
Commissioning
Fig. 3-2 Measurement electrode or compensation electrode with storing aids
In the delivery condition, each electrode is equipped with a watering
cap and a nut that protects the screw-in thread. Prior to installation, first
remove the watering cap and, using the special hexagon key, unscrew
the electrode from the nut. Keep both storing aids in case you want to
store the electrode.
®Plus
700 IQ
Caution
The membrane of the electrode must not
dry up (follow notes on storage)
be damaged
be brought into contact with grease.
Notes on storage If you will not use the electrode for a longer period of time, screw the
electrode into the nut as far as it will go. Soak the foam insert in the
®
watering cap with VARiON
/ES-1 standard solution (lower
concentration) and plug the electrode into the watering cap.
Caution
Make sure to use the correct solution for the watering cap
(VARiON
solution of the reference electrode instead the function of the
electrode can be seriously damaged.
®
/ES -1 standard solution). If you use the watering
3 - 4
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VARiON
Measurement and
compensation electrodes
Reference
electrode
Blind plug
Mark for
reference electrode
Special socket wrench
®Plus
700 IQ Commissioning
3.4 Preparing the sensor for measurement
3.4.1 Equipping the sensor with electrodes
Caution
The sensor can be damaged by dirt and moisture. Before
mounting the electrodes make sure the area behind the sealing
ring of the electrodes and the receptacle are dry and clean. The
VARiON
or original blind plugs are mounted.
Note
More detailed information on the electrode equipment for the various
operating modes is given in the table on page 1-3.
®Plus
700 IQ may only be submersed when the electrodes
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Fig. 3-3 Equipping the sensor with electrodes.
All receptacles are closed with blind plugs in the delivery condition.
Screw the electrodes into the receptacles instead of the blind plugs.
When doing so observe the following points:
The receptacle for the reference electrode is marked by a recess. It
extends into the inside of the sensor clearly deeper than the other
three receptacles (see Fig. 3-3).
3 - 5
Commissioning VARiON
The measurement and compensation electrodes can be mounted in
the remaining three receptacles in any order.
During installation make sure the area behind the sealing ring of the
electrode and the receptacle are absolutely dry and clean.
Plug the electrode on the special socket wrench provided and insert
the electrode with the special socket wrench.
Screw until the electrode seats without any gap on the electrode
support. Thus the tightness and electrical contacting are granted.
Note
When mounted, the electrodes can be recognized by the features
described in section 6.3.
®Plus
700 IQ
3 - 6
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VARiON
1
®Plus
700 IQ Commissioning
3.4.2 Mounting the protective hood
CH cleaning head
(option)
Mounting the standard
protective hood
For permanent operation, we recommend to use the CH cleaning head
for compressed air-driven cleaning. It is mounted instead of the
standard protective hood. The compressed air cleaning is started timecontrolled via the IQ S
ENSOR NET system. Information on the required
components is given in the YSI catalog and on the Internet.
If no CH cleaning head is used the standard protective hood should
always be mounted for measuring. It protects the electrodes from rough
mechanical impact.
Cleaning the protective
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hood
Fig. 3-4 Mounting the standard protective hood.
1 Loosen the coupling ring (1) of the protective hood.
2 Push the protective hood on the sensor as far as it will go.
3 Tighten the coupling ring of the protective hood.
The coupling ring of the protective hood can be taken apart for cleaning
purposes (see section 6.2 E
XTERIOR CLEANING).
3 - 7
Commissioning VARiON
SACIQ
1
2
3.4.3 Connecting the sensor to the IQ SENSOR NET
Connection cable The SACIQ sensor connection cable is required to connect the sensor.
Information on this and other IQ S
ENSOR NET accessories is given in
the YSI catalog and on the Internet.
Note
Do not suspend the sensor on the sensor connection cable. Use an
armature or electrode holder. Information on this and other IQ S
N
ET accessories is given in the YSI catalog and on the Internet.
Note
How to connect the SACIQ sensor connection cable to the
ENSOR NET is described in chapter 3 INSTALLATION of the
IQ S
IQ S
ENSOR NET system operating manual.
®Plus
700 IQ
ENSOR
Are the plug
connections dry?
Connecting the sensor
to the sensor
connection cable
Before connecting the sensor and sensor connection cable, 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).
Fig. 3-5 Connect the sensor
1 Take the protective caps off the plug connections of the sensor
and the SACIQ sensor connection cable, and keep them safe.
3 - 8
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VARiON
®Plus
700 IQ Commissioning
2 Plug the socket of the SACIQ 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.
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3 - 9
Commissioning VARiON
3.5 Settings
3.5.1 General information
®Plus
Automatic electrode
recognition
The VARiON
in electrodes and checks the equipment for validity. Depending on the
equipment, the following sensors are displayed in the list of sensors:
Sensor Designation
VARiON
VARiON
®Plus
®Plus
Note
Manually, you can also have the potassium electrode displayed as the
extra sensor, VARiON K.
700 IQ software automatically recognizes the built-
700 IQ Ammonium sensor VARiON A
700 IQ Nitrate sensor VARiON N
®Plus
700 IQ
Sensor Designation
VARiON
®Plus
700 IQ potassium sensor VARiON K
Carrying out settings With <S>, switch to the main settings menu from the measured value
display. Then navigate to the setting menu (setting table) of the sensor.
The exact procedure is described in the relevant IQ S
ENSOR NET
system operating manual.
The setting tables of the sensors are described in the following
chapters.
Sensor overlapping
settings
Certain settings are sensor overlapping and can be made in any one of
the setting tables. The setting is used by all sensors.
The sensor overlapping settings are:
Temperature mode (°C/°F)
Temp. adjustment
3 - 10
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