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: [phone]

800-765-4974
Email: [e-mail]
Internet: www.ysi.com

Copyright © 2012 Xylem Inc.

2

ba76000e01 01/2012

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

ba76000e01 01/2012

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

ba76000e01 01/2012

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

ba76000e01 01/2012

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

ba76000e01 01/2012

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

ba76000e01 01/2012

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

ba76000e01 01/2012

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.

ba76000e01 01/2012

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

ba76000e01 01/2012

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.

ba76000e01 01/2012

2 - 3

Safety instructions VARiON

®Plus

700 IQ

2 - 4

ba76000e01 01/2012

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.

ba76000e01 01/2012

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

ba76000e01 01/2012

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.

ba76000e01 01/2012

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

ba76000e01 01/2012

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

ba76000e01 01/2012

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

ba76000e01 01/2012

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

ba76000e01 01/2012

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

ba76000e01 01/2012

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.

ba76000e01 01/2012

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

ba76000e01 01/2012

VARiON

®Plus

700 IQ Commissioning

3.5.2 Setting table of the VARiON A (ammonium sensor)

Menu item Selection/values Explanations

Measuring mode  NH4-N

 NH4

 mV

Measuring range
(Measuring mode: NH4-N)

 AutoRange

 0.1 ... 100.0 mg/l

 1 ... 1000 mg/l

Measuring range
(Measuring mode: NH4)

 AutoRange

 0.1 ... 130.0 mg/l

 1 ... 1290 mg/l

Measuring range

 -2000 ... 2000 mV Fixed range

(Measuring mode: mV)

VARiON K  hide

 show

Citation form of the mass concentration or
voltage of the electrode.

2 measuring ranges can be selected.
With AutoRange, the instrument
automatically switches to the suitable
measuring range.

2 measuring ranges can be selected.
With AutoRange, the instrument
automatically switches to the suitable
measuring range.

hide (standard setting):
The potassium electrode is not displayed
as an extra sensor in the measured value
display.

show:
If the sensor is equipped with the
potassium electrode, the electrode is
displayed as the extra sensor VARiON K
in the measured value display.
The relevant settings can be done in an
extra setting table (see section 3.5.4).
Note:

If the maximum number of sensors
for the system is exceeded by activating
the sensor, the VARiON K cannot be
activated.

Calib. history K
(only with setting VARiON
K: hide)

ba76000e01 01/2012



Do not download



Transmit to log book

If you select Transmit to log book, a log
book message with the calibration history
of the potassium electrode is generated.
When opening the setting table again the
setting is reset to Do not download.

3 - 11

Commissioning VARiON

Menu item Selection/values Explanations

®Plus

700 IQ

Potassium compens.

(only with setting

VARiON K: hide)

automatic / manual
1 ... 1000 mg/l

automatic

(with a potassium electrode mounted):
When the potassium electrode is
mounted, the potassium compensation
takes places automatically only. The value
of the potassium concentration measured
at the time the setting table was opened is
displayed in the next line (Potassium

conc.).

manual

(without any potassium electrode
mounted):
After determining the potassium content of
the test solution enter the determined
potassium content manually in the next
line (Potassium conc.).
The measured value is accordingly
corrected by the entered potassium
content.
Note:

Detailed information on the subject
of potassium compensation is given in the
YSI primer, I

IN ONLINE ANALYSIS.

ON SELECTIVE MEASUREMENT

Potassium conc.

(only with setting

VARiON K: hide)

1 ... 1000 mg/l With Potassium compens.: automatic:

Display of the potassium measured value.
With Potassium compens.: manual:
Entry of the K value

IQ-LabLink  Not active (not used)

Temperature mode
(only with Measuring mode:



°C

°F

Unit of the measured temperature value
(Celsius, Fahrenheit).



NH4-N or NH4)

3 - 12

ba76000e01 01/2012

VARiON

®Plus

700 IQ Commissioning

Menu item Selection/values Explanations

Temp. adjustment
(only with Measuring mode:
NH4-N or NH4)

-1.5 °C ... +1.5 °C The temperature compensation function

enables the temperature sensor to be
balanced against a reference temperature
measurement (displacement of the zero
point by ±1.5 °C).
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, then carry out the
adjustment.
If the temperature difference of the
water and sensor is > 10°C, leave the
sensor in the container for at least one
hour while stirring occasionally.

Conc. offset -1.0 mg/l ... +1.0 mg/l Constant value, which is added to the

measuered value.

Program level 0 ... 2 Program extension (0 = Off = standard set-

ting).
Refer to section 4.2.4 for details about the

program extension.

Save and quit The system confirms the saving of the

settings and the display switches to the
next higher level.

Quit The display switches to the next higher

level without saving the new settings.

ba76000e01 01/2012

3 - 13

Commissioning VARiON

3.5.3 Setting table of the VARiON N (nitrate sensor)

Menu item Selection/values Explanations

®Plus

700 IQ

Measuring mode  NO3-N

 NO3

 mV

Measuring range
(Measuring mode NO3-N)

 AutoRange

 0.1 ... 100.0 mg/l

 1 ... 1000 mg/l

Measuring range
(Measuring mode: NO3)

 AutoRange

 0.5 ... 450.0 mg/l

 5 ... 4500 mg/l

Measuring range

 -2000 ... 2000 mV Fixed range

(Measuring mode: mV)

Chloride compens. automatic / manual

1 ... 1000 mg/l

Citation form of the mass concentration or
voltage of the electrode.

2 measuring ranges can be selected.
With AutoRange, the instrument
automatically switches to the suitable
measuring range.

2 measuring ranges can be selected.
With AutoRange, the instrument
automatically switches to the suitable
measuring range.

automatic
(with a chloride electrode mounted):
When a chloride electrode is mounted, the
chloride compensation takes places
automatically only. The value of the
chloride concentration measured at the
time the setting table was opened is
displayed in the next line.

manual
(without any chloride electrode mounted):
After determining the chloride content of
the test solution enter the determined
chloride content manually in the next line.
The measured value is accordingly
corrected by the entered chloride content.
Note:

Detailed information on the subject
of chloride compensation is given in the
YSI primer, I

IN ONLINE ANALYSIS.

ON SELECTIVE MEASUREMENT

Chloride conc. 1 ... 1000 mg/l With Chloride compens.: automatic:

Display of the chloride measured value.
With Chloride compens.: manual:
Entry of the Cl value

Calib. history Cl
(only with setting Chloride
compens.: automatic)

Do not download



Transmit to log book

Send to log book generates a log book

message with the calibration history of the
chloride electrode. When opening the



setting table again the setting is reset to
Do not download.

3 - 14

ba76000e01 01/2012

VARiON

®Plus

700 IQ Commissioning

Menu item Selection/values Explanations

IQ-LabLink  Not active (not used)





°C

°F

Unit of the measured temperature value
(Celsius, Fahrenheit).

Temperature mode
(only with Measuring
mode: NO3-N or NO3)

Temp. adjustment
(only with Measuring
mode: NO3-N or NO3)

-1.5 °C ... +1.5 °C The temperature adjustment function

enables the temperature sensor to be
balanced against a reference temperature
measurement (displacement of the zero
point by ±1.5 °C).
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, then carry out the
adjustment.
If the temperature difference of the
water and sensor is > 10°C, leave the
sensor in the container for at least one
hour while stirring occasionally.

Conc. offset -1.0 mg/l ... +1.0 mg/l Constant value, which is added to the

measuered value.

Program level 0 ... 2 Program extension (0 = Off = standard set-

ting).
Refer to section 4.2.4 for details about the

program extension.

Save and quit The system confirms the saving of the

settings and the display switches to the
next higher level.

Quit The display switches to the next higher

level without saving the new settings.

ba76000e01 01/2012

3 - 15

Commissioning VARiON

3.5.4 Setting table of the VARiON K (potassium sensor)

Note

These sensor settings are only available if in the sensor settings for the
VARiON A the VARiON K setting was set to Active (see section 3.5.2).

The basic settings are taken over from the VARiON A sensor but can
be adjusted separately afterwards.

Menu item Selection/values Explanations

®Plus

700 IQ

Measuring mode  K (mg/l)

 mV

Measuring range

 1 ... 1000 mg/l Fixed range

Citation form of the mass concentration or
voltage of the electrode.

(Measuring mode: K (mg/l))

Measuring range

 -2000 ... 2000 mV Fixed range

(Measuring mode: mV)

IQ-LabLink  Not active (not used)

Temperature mode

(only with



°C

°F

Unit of the measured temperature value
(Celsius, Fahrenheit).



Measuring mode: K (mg/l))

Temp. adjustment

(only with

Measuring mode: K (mg/l))

-1.5 °C ... +1.5 °C The temperature compensation function

enables the temperature sensor to be
balanced against a reference temperature
measurement (displacement of the zero
point by ±1.5 °C).
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, then carry out the
adjustment.
If the temperature difference of the
water and sensor is > 10°C, leave the
sensor in the container for at least one
hour while stirring occasionally.

Conc. offset -10 mg/l ... +10 mg/l Constant value, which is added to the

measuered value.

Program level 0 ... 2 Program extension (0 = Off = standard set-

ting).
Refer to section 4.2.4 for details about the

program extension.

3 - 16

ba76000e01 01/2012

VARiON

®Plus

700 IQ Commissioning

Menu item Selection/values Explanations

Save and quit The system confirms the saving of the

settings and the display switches to the
next higher level.

Quit The display switches to the next higher

level without saving the new settings.

ba76000e01 01/2012

3 - 17

Commissioning VARiON

®Plus

700 IQ

3 - 18

ba76000e01 01/2012

VARiON

Start: press

<C>

Electrode

zeroing

Yes/No

Selection of procedure

Matrix adjustment Check Calibration

Procedures for special cases

(see section 4.3)

Calibration free operation

Yes if a new or different electrode is

commissioned

®Plus

700 IQ Matrix adjustment, check and calibration

4 Matrix adjustment, check and calibration

4.1 General information

Calibration free

operation

Steps

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").With 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 as necessary. The sensor
does not have to be taken out of the sample for this. At the same time,
a matrix adjustment provides information on the state of the electrodes.

ba76000e01 01/2012

Fig. 4-1 Schematic diagram

4 - 1

Matrix adjustment, check and calibration VARiON

Drift potential Simultaneously with the matrix adjustment (or calibration), the drift

voltage DV(mV) of the combination electrode is determined. It serves
to evaluate the long-term behavior of the combination electrode. The
drift voltage changes due to the following factors:

 Influences due to the sample composition (matrix)

 Changes of the electrode characteristics.

Electrode zeroing The temporal change of the drift voltage is recorded in the calibration

history so the long-term behavior of a combination electrode can be
evaluated. As a start value, the user has to set the drift voltage to zero
at the beginning of this evaluation period in order to observe changes
in the calibration history.

The electrode zeroing itself is carried out with the matrix adjustment (or
calibration) procedure for the selected combination electrode(s). It
becomes effective if the procedure was successfully carried out.

For each electrode, the user can carry out the electrode zeroing
separately and at any time. We recommend, however, to start the
evaluation period with the commissioning of a new or different
electrode to be able to see the entire operating life of an electrode in
the calibration history.

®Plus

700 IQ

Resetting the slope by

electrode zeroing

Maintenance and

calibration case,

®

VARi O N

Case

It is not possible to zero an electrode with the Check procedure, as this
procedure stores no data in the sensor.

Electrode zeroing with the matrix adjustment procedure resets the
slope to the default setting (+ or - 59.2 mV) at the same time. Electrode
zeroing with the calibration procedure replaces the existing slope with
the newly determined value.

For adjustment, calibration and maintenance activities on site, the
VARiON

®

Case is available. The convenient case provides room for all

required accessories (details, see section 6.1).

4 - 2

ba76000e01 01/2012

VARiON

®Plus

700 IQ Matrix adjustment, check and calibration

4.2 Matrix adjustment

4.2.1 General information on matrix adjustment

This procedure adjusts the value directly measured in the test sample
to an independently determined reference value ("lab value"). To
determine the reference values, a sample is taken from the measuring
solution and the relevant concentrations are measured (e.g.
photometrically).

First select for which of the installed combination electrodes the matrix
adjustment should be carried out. Based on this selection and the
electrode equipment, the sensor software determines the ion types for
which a reference measurement must be carried out. The menu guided
routine adapts itself correspondingly and informs you of all necessary
actions.

4.2.2 Carrying out the matrix adjustment

Note

A chloride electrode should be checked for coatings and polished off as
necessary before the matrix adjustment is carried out (see section 6.4).

Main steps

Step 1: Determination of all combination electrode voltages

("reference voltages"). The sensor is in the sample.
The procedure is started from the measured value display
with <C>. After completion the system returns to the
measured value display.

Step 2: Sampling at the same place and time if possible and

determination of all relevant reference values

Step 3: Entry of the measured reference values. This step is

started by pressing <C> again.

Online help A comfortable, menu guided routine guides you through the matrix

adjustment. All steps are easily and understandably explained on the
display. In addition, you can call up an Online help for each step. To do
so, move the highlighting to the Online help menu item with the arrow
keys <> or the toggle switch <> and press <OK>. A help
text with detailed information on the relevant operating step appears on
the display. It provides, for example, important instructions on how to
keep the correct basic conditions. When <OK> is pressed once again,
the display returns to the current operating step.

Matrix adjustment with

electrode zeroing

ba76000e01 01/2012

After installing a new or different electrode you have to zero the
electrode to facilitate a long-term evaluation. Details on electrode
zeroing, see section 4.1.

4 - 3

Matrix adjustment, check and calibration VARiON

®Plus

Practical instructions  Ammonium and nitrate have to be determined immediately after

taking the sample as the their content changes very quickly due to
the micro organisms that are present. It is best to take the sample
using a syringe filter for transport to the laboratory or to stabilize it
otherwise. When adding stabilizing solutions, the dilution factor has
to be taken into account.

 While determining the reference concentrations in the lab (step 2),

you can use the sensor for control purposes again by switching the
maintenance condition off and thus releasing the linked outputs. The
sensor continues to use the data of the previous matrix adjustment
(or calibration). The reference voltages determined in step 1 will not
be lost. They remain stored until step 3 of the matrix adjustment is
completed. They do not have to be noted and entered again.

 Use the Online help if you are unsure of anything during the matrix

adjustment.

700 IQ

4 - 4

ba76000e01 01/2012

VARiON

Last electrode
zeroing via
matrix adjustment

Chronological list of
the last matrix
adjustments

®Plus

700 IQ Matrix adjustment, check and calibration

4.2.3 Result of the matrix adjustment

Evaluation After the matrix adjustment, the system automatically evaluates the

current condition of the electrode(s) based on the drift voltage. For a
successful matrix adjustment, the drift voltage must be within the range

-45 mV ... +45 mV. The drift voltage is set to 0 mV if you have selected
to zero the electrode.

At the end of the matrix adjustment procedure the drift voltage of all
selected electrodes is shown on the display. The evaluation is
displayed with "+" (successful) or "-" (unsuccessful). Additionally, the
slopes are displayed that are used for the current measured value
calculation. The slopes are marked by a star (*) as they were not
changed by the matrix adjustment.

Taking over the

determined values

History of matrix

adjustments

(only available in the

IQ S

ENSOR NET

system 2020 XT)

For each successfully adjusted electrode you can individually decide
whether the values should be stored for measurement.

Note

If the matrix adjustment was erroneous due to an incorrect
determination or entry of the reference concentration, you can correct
the entry (if necessary several times). If, by doing so, it is not possible
to eliminate the error, the complete matrix adjustment has to be
repeated or discarded for this electrode. If it is discarded, measurement
is continued with the values of the last valid matrix adjustment (or
calibration). Values of successfully adjusted electrodes that were
already stored are retained.

Note

Actions for error elimination are given in the Online help and in chapter
8 W

HAT TO DO IF ....

The history of matrix adjustments can be viewed in the so-called
calibration history.

ba76000e01 01/2012

Fig. 4-2 Calibration history with matrix adjustments (example: VARiON A)

4 - 5

Matrix adjustment, check and calibration VARiON

The history of matrix adjustments contains the following information:

Date Date of the matrix adjustment

S Slope [mV] of the electrode.

The slopes are marked by a star (*) because they were not changed
by the matrix adjustment or reset to the default condition with the
electrode zeroing.

DV Drift voltage [mV]

0 is displayed after an electrode zeroing.

Ref1 Reference concentration [mg/l]

Ref2 This column is of no importance for the matrix adjustment

K+ or Cl- Measured or entered interfering ions concentration [mg/l]

P Procedure (1 = matrix adjustment)

®Plus

700 IQ

T Temperature [°C]

R Evaluation of the matrix adjustment

+ : Matrix adjustment successful.

The sensor measures with the new adjustment data.

? : Matrix adjustment unsuccessful.

Invalid adjustment data was discarded. Measurement is
continued with the last valid values.

Note

If you set the potassium electrode to be displayed as the extra sensor
VARiON K, the calibration history of the potassium electrode can be
viewed under VARiON K. The IQ S
log book for this sensor. Log book messages are displayed with the
main sensor, VARiON A.

For the chloride electrode, or if the potassium electrode is not displayed
as an extra sensor, you can generate a log book message with the
calibration history by means of the menu item, Calib. history Cl (or K)
in the setting table of the relevant sensor. How to do this is described
on page 3-11. The log book message is recorded in the log book of the
relevant main sensor (VARiON A -> message code IC5395 or VARiON
N -> message code IC6396).

ENSOR NET does not keep an extra

4 - 6

ba76000e01 01/2012

VARiON

®Plus

700 IQ Matrix adjustment, check and calibration

4.2.4 Program extension

The simple matrix adjustment, as described in the sections 4.2.2 to

4.2.3, will in most cases lead to precise measurement results. In some
cases, special effects in the matrix can cause the real characteristic
curve of the ISE measurement to deviate very much from the factory
characteristic curve. This can lead to measured values that are not
precise enough.

From sensor software version 3.20, the setting table provides the
Program Level setting, which can be used to enhance the functionality
of the matrix adjustment. Program Level 0 is the simple matrix
adjustment as described in the sections 4.2.2 to 4.2.3. The program
levels 1 and 2 provide tools with which the real characteristic curve of
the ISE measurement can be better approximated.

For more detailed information please address your YSI contact person.

Note

To restore the factory characteristic curve, select Program Level 0 in
the setting table and then quit the menu with Save and quit.

ba76000e01 01/2012

4 - 7

Matrix adjustment, check and calibration VARiON

4.3 Check and calibration in standard solutions

4.3.1 General information on checking and calibrating

In addition to the comparison measurement or matrix adjustment under
real measurement conditions, it is possible to check the function of the
entire sensor in standard solutions. If necessary, you can also take
over to the sensor the slope and potential level of the individual
combination electrodes via an exact calibration in standard solutions.
The slope will be retained with a future matrix adjustment if it is carried
out without zeroing the electrode.

®Plus

700 IQ

When does a check or

calibration make sense?

Caution

The long term stable VARiON
with the recommended application. A check in standard solutions
is only of significance if all basic conditions (cleanness,
conditioning etc.) are strictly kept. Calibration can cause major
measurement errors if the basic conditions are not sufficiently
kept. After calibrating, a matrix adjustment is normally required
additionally
(always with the recommended application). Standard solutions
do not represent any real test sample!

A check or calibration can be useful in the following special cases:

 If the measured values do not appear to be correct even after a

careful matrix adjustment and if you suspect the electrode slopes to
have changed

 If a new application is to be started, the sample composition of which

considerably deviates from that of the recommended application
(see section 1.3 R

ECOMMENDED FIELDS OF APPLICATION)

 Routinely within the framework of the company quality assurance.

®Plus

electrodes are calibration-free

4 - 8

ba76000e01 01/2012

VARiON

®Plus

700 IQ Matrix adjustment, check and calibration

Differences between

check and calibration

The check and calibration are carried out in two separate routines. The
schema is the same with both routines: Two standard solutions with
different concentrations are measured one after the other. The
differences between the check and calibration are as follows:

 For the check, the basic conditions to be kept are less strict. It is

suitable as a quick method to check whether the slope and potential
level of the combination electrodes are within the allowed limits. The
results are just for information. No characteristics or sensor settings
are changed.

 For calibration, the basic conditions must comply with very high

requirements (longer conditioning times, discarding of the
conditioning solution, temperature adjustment etc.).
Correspondingly, it requires more time. During calibration, the slope
and drift voltage are exactly determined and evaluated. If the
calibration was successful, the determined values can be taken over
for measurement. The procedure can, however, be used as a mere
check method. Calibration is documented in the calibration history
and in the log book.

Standard solutions For the check or calibration, the following two YSI standard solutions

are required in this order:

 VARiON

 VARiON

®

/ES-2 (high concentration)

®

/ES-1 (low concentration).

Online help A comfortable, menu guided routine guides you through the procedure.

Calibration with

electrode zeroing

These standard solutions contain all ion types that come into question
(ammonium, nitrate, potassium and chloride) and are especially
adapted to the VARiON

®Plus

700 IQ.

All steps are easily and understandably explained on the display. In
addition, you can call up an Online help for each step. To do so, move
the highlighting to the Online help menu item with the arrow keys
<> or the toggle switch <> and press <OK>. A help text
with detailed information on the relevant operating step appears on the
display. It provides, for example, important instructions on how to keep
the correct basic conditions. When <OK> is pressed once again, the
display returns to the current operating step.

After installing a new or different electrode you have to zero the
electrode to facilitate a long-term evaluation. Details on electrode
zeroing, see section 4.1.

Note

A chloride electrode should be checked for coatings and polished off as
necessary before the check or calibration is carried out (see section

6.4).

ba76000e01 01/2012

4 - 9

Matrix adjustment, check and calibration VARiON

®Plus

700 IQ

Preparations and

instructions on how to

keep the basic

conditions

 Select a place where clean working conditions and a constant,

sufficiently high temperature are granted (a room, e.g. laboratory).
Temperatures under 10 °C extend the conditioning time
considerably.

 Make sure the temperature of all components (sensor, standard

solutions, containers, accessories etc.) is similar and constant. We
recommend to store the standard solutions in the same place where
the check or calibration is carried out.

 Use containers and accessories (beaker, stirring rod) that are

absolutely clean and without detergent residues. Detergent residues
can seriously affect the function of the electrodes.

 Remove the protective hood and clean the sensor thoroughly.

Before the check, rinse the sensor with standard solution VARiON
ES-2.

 Make sure the depth of immersion is sufficient (minimum 5 cm).

 Make sure there are no air bubbles in front of the electrode

membrane.

 Conditioning times: During the conditioning steps, all relevant

combination electrode voltages are indicated on the display. Thus
you can observe the conditioning process.

®

/

 Regular stirring accelerates the conditioning process considerably.

Stirring with a stirring rod or the sensor itself is sufficient.

 For calibration, the standard solution is discarded after conditioning.

This is pointed out by a corresponding note in the calibration routine.
It is essential for an exact calibration result.

 Use the Online help if you are unsure of anything during calibration.

4.3.2 Result of the check

Evaluation At the end of the check, the result for the combination electrodes is

shown on the display with "+" (successful) or "-" (unsuccessful). The
exact check criteria are given in the Online help of the result display. At
the same time the result is entered in the log book as an info message.
There is no

entry in the calibration history.

4 - 10

ba76000e01 01/2012

VARiON

®Plus

700 IQ Matrix adjustment, check and calibration

4.3.3 Result of the calibration

Evaluation With calibration, the system automatically evaluates the condition of a

combination electrode based on the data of its characteristic curve. The
drift potential and slope are evaluated separately. For a calibration
procedure to be valid, the potential level, slope and drift voltage must
be within certain ranges.

Valid ranges for slope and drift potential:

Value of the slope: 50 ... 70 mV

Drift voltage: -45 ... +45 mV

The valid potential levels (MIN, MAX) can be taken from the online help.

Taking over the

determined values

For each successfully calibrated electrode you can individually decide
whether the values should be stored for measurement.

Note

Actions for error elimination are given in chapter 8 W

HAT TO DO IF ....

ba76000e01 01/2012

4 - 11

Matrix adjustment, check and calibration VARiON

Last electrode
zeroing (here, via
calibration)

Chronological list
with the last matrix
adjustments and
calibrations

®Plus

700 IQ

Calibration history

(only available in the

IQ S

ENSOR NET

systems 2020 XT)

Date Date of the calibration or matrix adjustment

S Slope [mV] of the electrode.

In the calibration history, a calibration has the entries ES1 and ES2 in
the Ref1 and Ref2 columns which the matrix adjustment has not:

Fig. 4-3 Calibration history (example: VARiON A)

The calibration history contains the following information:

After a matrix adjustment, the values for the slope are marked

Note:
by a star (*) because they were not changed by this procedure.

DV Drift voltage [mV]

After an electrode zeroing and subsequent calibration or matrix
adjustment, 0 is displayed.

Ref1/Ref2 Depending on the procedure.

Matrix adjustment: Reference concentration [mg/l]
Calibration: Used standard solution

K+ or Cl- Depending on the procedure.

Matrix adjustment: Interfering ions concentration [mg/l]

®

Calibration: Standard solution, VARiON

/ES-2

P Procedure (1 = matrix adjustment, 3 = calibration)

T Temperature [°C]

R Evaluation of the calibration or matrix adjustment

+ : Calibration or matrix adjustment.

The sensor measures with the new calibration or adjustment
data.

? : Calibration or matrix adjustment unsuccessful.

Invalid calibration or adjustment data were discarded.
Measurement is continued with the last valid values.

4 - 12

ba76000e01 01/2012

VARiON

®Plus

700 IQ Matrix adjustment, check and calibration

Note

If you set the potassium electrode to be displayed as the extra sensor
VARiON K, the calibration history of the potassium electrode can be
viewed under VARiON K. The IQ S

ENSOR NET does not keep an extra

log book for this sensor. Log book messages are displayed with the
main sensor, VARiON A.

For the chloride electrode, or if the potassium electrode is not displayed
as an extra sensor, you can generate a log book message with the
calibration history by means of the menu item, Calib. history Cl (or K)
in the setting table of the relevant sensor. How to do this is described
on page 3-11. The log book message is recorded in the log book of the
relevant main sensor (VARiON A -> message code IC5395 or VARiON
N -> message code IC6396).

ba76000e01 01/2012

4 - 13

Matrix adjustment, check and calibration VARiON

®Plus

700 IQ

4 - 14

ba76000e01 01/2012

VARiON

®Plus

700 IQ Measuring

5 Measuring

5.1 Measuring operation

Note the data given in section 9.2 APPLICATION CONDITIONS, especially
the minimum immersion depth of the sensor (> 50 mm with mounted
protective hood).

Note

To keep the sensor clean, we recommend to use the CH cleaning head
(see chapter 7 R

5.2 Factors affecting the measured value

Caution

Greases, oils, certain tensides and similar substances can
shorten the operational lifetime of the electrodes. Therefore, they
should not be present in the test sample.

EPLACEMENT PARTS AND ACCESSORIES).

®Plus

For measurement with the VARiON

700 IQ the following
influencing variables can be important, depending on the measured
parameter:

Measured parameter Influencing variable

Ammonium  pH value

 Potassium ions

Nitrate  Chloride ions

Note

The effects of influencing variables on measurement and
compensating actions are described in detail in the YSI primer, I

SELECTIVE MEASUREMENT IN ONLINE ANALYSIS.

ON

ba76000e01 01/2012

5 - 1

Measuring VARiON

®Plus

700 IQ

5 - 2

ba76000e01 01/2012

VARiON

®Plus

700 IQ Maintenance and electrode exchange

6 Maintenance and electrode exchange

6.1 General maintenance notes

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.).

Maintenance condition We recommend to switch on the maintenance condition each time the

sensor is taken out of the measuring position. This avoids unwanted
reactions of linked outputs. More information on the maintenance

VARi O N

condition is given in the relevant IQ S
manual.

®

/Epack The VARiON®/Epack set with usual replacement parts is available for

maintenance (see chapter 7 R

EPLACEMENT PARTS AND ACCESSORIES).

ENSOR NET system operating

Maintenance and

calibration case,

VARi ON

®

Case

For adjustment, calibration and maintenance activities on site, the
VARiON

®

Case is available. The convenient case provides room for all

required accessories (details, see next page).

ba76000e01 01/2012

6 - 1

Maintenance and electrode exchange VARiON

9

6

7

10

8

11

2
3

4

5

1

ba76000e01 12/2011

VARiON

®

Plus

700 IQ

Operatingmanual

IQSENSOR NET

Modularcombination sensor

forammonium and nitrate

®Plus

700 IQ

Fig. 6-1 Sample equipment of the VARiON® Case calibration and maintenance case

1 Blind plug

2 Special socket wrench

3 Polishing strip

4 Replacement electrodes with watering caps

5 Compartments for various accessories (wiping cloths, sample

6 Recess for sensor

7 Storing solution for reference electrode

bottles, personal protective equipment etc.)

8 Replacement reference electrode with storing aids

9 Calibration standards

10 Operating manual

11 Protective hood

6 - 2

ba76000e01 01/2012

VARiON

®Plus

700 IQ Maintenance and electrode exchange

6.2 Exterior cleaning

Note

To keep the electrodes clean, we recommend to use the CH cleaning
head (see chapter 7 R

EPLACEMENT PARTS AND ACCESSORIES).

With normal operation (e.g. municipal wastewater) we strongly
recommend to clean the outside of the sensor and calibrate:

 when it is strongly contaminated (after visual check)

 if erroneous measured values are suspected

 each time before removing or exchanging an electrode

Caution

Do not use any detergents for cleaning. Detergent residues can
seriously affect the function of the electrodes.

Note

We recommend to clean the sensor shaft and electrodes while the
sensor is still connected to the sensor connection cable. Otherwise,
moisture and/or dirt can get into the plug connection where it can cause
contact problems.

If you would like to disconnect the sensor from the sensor connection
cable, please note the following points:

 Before disconnecting the sensor from the SACIQ sensor connection

cable, remove any larger pieces of contamination from the sensor,
particularly in the area of the plug connection (brush it off in a bucket
of tap water, wash it off with a hose or wipe it off with a cloth).

 Unscrew the sensor from the SACIQ sensor connection cable.

 Always place a protective cap on the plug head of the sensor and on

the SACIQ sensor connection cable so that no moisture or dirt can
get into the contacting surfaces.

 In corrosive environments, close the socket of the sensor

connection cable with the screwable SACIQ-Plug when it is dry in
order to protect the electrical contacts from corrosion. The protective
plug is available as an accessory (see section 7.2 G

ACCESSORIES).

ENERAL

Cleaning the sensor Clean the sensor shaft with tap water and a soft sponge or brush.

Remove the protective hood. The electrodes are best cleaned under
running tap water using a soft toothbrush or brush.

ba76000e01 01/2012

6 - 3

Maintenance and electrode exchange VARiON

1

2

3

®Plus

700 IQ

Cleaning the coupling

ring of the protective

hood

The coupling ring can be unscrewed and dismantled for cleaning as
follows:

Fig. 6-2 Dismantling the coupling ring

1 Remove the retaining ring (pos. 1 in Fig. 6-2).

2 Remove the intermediate ring (pos. 2) and sealing ring (pos.

3).

After the parts have been cleaned, reassemble the coupling ring in
reverse order. When doing so make sure that the tapered side of the
intermediate ring (pos. 2) points towards the sealing ring (pos. 3).

6 - 4

ba76000e01 01/2012

VARiON

®Plus

700 IQ Maintenance and electrode exchange

6.3 Exchanging the electrodes

Caution

The sensor can be damaged by dirt and moisture. Each time
before dismantling an electrode carefully clean the area around
the electrodes (section 6.2). Before mounting an electrode make
sure the area behind the sealing ring of the electrode and the
receptacle are dry and clean. The VARiON
submersed when the electrodes or original blind plugs are
mounted.

Use the special socket wrench provided to dismantle an electrode.
Electrodes are installed as described in section 3.4.1 E

SENSOR WITH ELECTRODES.

®Plus

700 IQ may only be

QUIPPING THE

Recognizing the

electrode type from

outside

When mounted, the electrodes can be recognized by the following
features:

Electrode Hexagon Front

Other features

surface

®

VARiON

Ref black black – Thread at the

hexagon

®Plus

VARiON

NH4 black black – Hexagon

without thread

®Plus

VARiON

VARiON

Kblackwhite

®Plus

NO3 white white – Labeled with the

electrode type

ba76000e01 01/2012

®Plus

VARiON

Cl black black – Larger

membrane

– Membrane flush

with the front
surface

Note

For the correct storage of the electrodes please follow the instructions
in section 3.3 N

OTES ON THE HANDLING OF THE ELECTRODES.

6 - 5

Maintenance and electrode exchange VARiON

SF 300

6.4 Polishing the chloride electrode

Caused by the test medium, a coating can develop on the surface of
the chloride electrode, which reduces the electrode slope. To maintain
a proper chloride compensation the surface must be renewed by
polishing at regular intervals.

Caution

Danger of damaging the electrode. Exclusively use the SF 300
polishing strip. Never use commercial sandpaper or similar.

The polishing can be done while the electrode is mounted (remove the
protective hood as necessary). To polish the electrode, use the SF 300
polishing strip provided with the electrode. Moisten the rough side of
the polishing strip with water and polish off any coatings under slight
pressure.

®Plus

700 IQ

Fig. 6-3 Polishing the chloride electrode

6 - 6

ba76000e01 01/2012

VARiON

®Plus

700 IQ Replacement parts and accessories

7 Replacement parts and accessories

7.1 Electrodes

Exchange electrodes

Storing equipment

Description Model Order no.

®

Reference electrode VARiON

Ammonium electrode VARiON

Nitrate electrode VARiON

Potassium electrode VARiON

Chloride electrode VARiON

Ref 107 042Y

®Plus

NH4 107 044Y

®Plus

NO3 107 045Y

®Plus

K 107 046Y

®Plus

Cl 107 047Y

Description Model Order no.

250 ml potassium chloride

KCl-250 109 705Y
solution for the storage of the
electrode

7.2 General accessories

Standard solutions

for calibration

Maintenance equipment

Protective plugs

Description Model Order no.

®

1 liter combination standard 1

VARiON

/ES-1 107 050Y

(low concentration)

®

1 liter combination standard 2

VARiON

/ES-2 107 052Y

(high concentration)

Description Model Order no.

Polishing film SF 300 203 680Y

Description Model Order no.

Screwable plug for sensor

SACIQ-Plug 480 065Y

connection cable

ba76000e01 01/2012

7 - 1

Replacement parts and accessories VARiON

®Plus

700 IQ

General replacement

parts

Calibration and

maintenance case

Description Model Order no.

®

Protective hood VARiON

Replacement parts set,

VARiON

700 IQ-SK 107 056Y

®

/Epack 107 057Y

comprising
– 1 blind plug for receptacle

– 1 special socket wrench

– 3 replacement sealing rings

for electrodes/blind plugs

– Storing equipment for

electrodes:
1 nut (transparent),
1 watering cap with sponge
1 nut (black)
1 watering cap (without
sponge) for reference
electrode

Description Model Order no.

®

Empty case for the storage of

VARiON

Case 107 058Y
calibration and maintenance
equipment for the

®Plus

VARiON

700 IQ

7 - 2

Components for
cleaning system

Description Model Order no.

Cleaning head CH 900 107Y

Passive valve module DIQ/CHV 472 007Y

Active valve module (does not

MIQ/CHV PLUS 480 018Y

require a free relay output in the

ENSOR NET system)

IQ S

Air compressor supplying the
sensor cleaning system with
cleaning air

Cleaning Air Box
115 VAC
230 VAC

480 017Y
480 019Y

Note

Information on other IQ S

ENSOR NET accessories is given in the YSI

catalog and on the Internet.

ba76000e01 01/2012

VARiON

®Plus

700 IQ What to do if ...

8 What to do if ...

8.1 Interpretation of the drift voltage

The drift voltage is influenced by the potential levels of the
measurement electrode and reference electrode. If the potential levels
shift, e.g. caused by aging, both parts can move into the same direction
or into opposite directions. The comparison of the drift voltages of two
or three electrodes enables to draw conclusions concerning the state
of individual electrodes if a matrix adjustment or calibration resulted in
an invalid or considerably deviating drift voltage.

Assessment aids View the calibration history of the combination electrodes. In the

following cases, assessment is relatively easy:

 If the drift voltages of all combination electrodes show the same

trend, i. e. the drift voltages have shifted in the same direction
(positive or negative) by approximately the same amount, this
indicates that the potential level of the reference electrode has
shifted. The reference electrode is possibly highly contaminated or
at the end of its service life.

 If the drift voltages of all combination electrodes do not show a trend

but shift by different amounts into different directions, the potential
level of the reference electrode has not changed considerably. The
invalid drift voltage is probably caused by a defective measuring
electrode. The measuring electrode is possibly highly contaminated
or at the end of its service life.

ba76000e01 01/2012

8 - 1

What to do if ... VARiON

8.2 Error causes and remedies

®Plus

700 IQ

No measured value

display

Cause Remedy

– Sensor not connected – Connect the sensor

– Incorrect electrode

– Correct electrode equipment

equipment

– Electrode(s) not at all or

incorrectly recognized by the
system

– Check the installation and

contacts of the electrode (gap­free mounting)

– Check electrode receptacle for

moisture

– If necessary, unscrew the

electrode/blind plug and
thoroughly dry the electrode/
blind plug and receptacle

– Unknown – Look for error messages in the

log book

– Liquid in the sensor shaft – Sensor defective, send it back

Measurement provides

implausible measured

values

Cause Remedy

– No matrix adjustment or

calibration carried out

– Adjustment or calibration

error (e.g. incorrect lab
values, contaminated
standard solutions)

– Manual interfering ions

compensation works with an
unsuitable value

– Electrode(s) not at all or

incorrectly recognized by the
system

– Adjust or calibrate the

electrode

– Check the adjustment or

calibration conditions

– Readjust or recalibrate the

electrode

– Determine and enter the

interfering ions compensation
once again, then recalibrate

– Check the installation and

contacts of the electrode (gap­free mounting)

– Check electrode receptacle for

moisture

– If necessary, unscrew the

electrode/blind plug and
thoroughly dry the electrode/
blind plug and receptacle

8 - 2

ba76000e01 01/2012

VARiON

®Plus

700 IQ What to do if ...

Cause Remedy

– Electrode contaminated – Clean the electrode (see

section 6.2)

– Liquid in the sensor shaft – Sensor defective, send it back

Measurement provides

jumping, unstable or

drifting values

Cause Remedy

– Measurement /

compensation electrode:
Electrode membrane not
moistened by measuring
solution, e.g. due to air in
front of the membrane

– Moisten membrane with

deionized water using a wash
bottle. To do so, position the
opening of the wash bottle on
the membrane and splash
against the membrane
vigorously

– Measurement /

compensation electrode:
Air bubble behind the
membrane

– Measurement electrode /

compensation and reference
electrode:
Insufficient electrical contact
in the electrode receptacle

– Hold the electrode in a vertical

position with the membrane
down and knock it on the side
with the special socket wrench

– Check the installation and

contacts of the electrode (gap­free mounting)

– Check electrode receptacle for

moisture

– If necessary, unscrew the

electrode/blind plug and
thoroughly dry the electrode/
blind plug and receptacle

ba76000e01 01/2012

– Reference electrode dried up – Replace reference electrode

– Measurement /

– Replace defective electrode
compensation electrode or
reference electrode leaky or
damaged

– Liquid in the sensor shaft – Sensor defective, send it back

8 - 3

What to do if ... VARiON

®Plus

700 IQ

Faulty result of the

matrix adjustment

Faulty result of

calibration

Cause Remedy

– Error during procedure, e.g.

incorrect lab values

– Check the basic conditions

– Follow the practical notes on

page 4-4 or in the online help

– Recalibrate the electrode

– Reference electrode or

– Replace defective electrode
measurement electrode
defective due to aging (see
section 8.1)

Cause Remedy

– Error during procedure, e.g.

contaminated standard
solutions

– Check the basic conditions

– Follow the practical notes on

page 4-10 or in the online help

– Recalibrate the electrode

– Reference electrode or

– Replace defective electrode
measurement electrode
defective due to aging (see
section 8.1)

8 - 4

ba76000e01 01/2012

VARiON

®Plus

700 IQ Technical data

9 Technical data

9.1 Measuring characteristics

Measuring principle Potentiometric measurement by means of ion sensitive electrodes.

Modular structure with jointly used reference electrode and ion
sensitive electrodes. Integrated microprocessor electronics, screened
2-wire connection for power and data transmission.

Measured parameters

Measuring ranges and

resolution,

Ammonium

measurement

Measuring ranges and

resolution,

Nitrate measurement

Main measured parameters Ammonium and/or nitrate

(depending on the electrode
equipment)

Secondary measured parameter Temperature

Compensation parameters Potassium or chloride

(depending on the electrode
equipment)

Measuring

Measuring range Resolution

mode

NH4-N 0.1 ... 100.0 mg/l

1 ... 1000 mg/l

NH4 0.1 ... 129.0 mg/l

1 ... 1290 mg/l

0.1 mg/l
1 mg/l

0.1 mg/l
1 mg/l

mV -2000 ... +2000 mV 1 mV

Measuring

Measuring range Resolution

mode

NO3-N 0.1 ... 100.0 mg/l

1 ... 1000 mg/l

0.1 mg/l
1 mg/l

Measuring ranges and

resolution,

Potassium

measurement

ba76000e01 01/2012

NO3 0.5 ... 450.0 mg/l

5 ... 4500 mg/l

0.5 mg/l
5 mg/l

mV -2000 ... +2000 mV 1 mV

Measuring

Measuring range Resolution

mode

K 1 ... 1000 mg/l 1 mg/l

mV -2000 ... +2000 mV 1 mV

9 - 1

Technical data VARiON

®Plus

700 IQ

Measuring ranges and

resolution,

Chloride measurement

Interfering ions

compensation

Selectable procedures

for

interfering ions

compensation

Measuring

Measuring range Resolution

mode

Cl 1 ... 1000 mg/l 1 mg/l

mV -2000 ... +2000 mV 1 mV

Main measured parameter Interfering ions that can be

compensated for

+

Ammonium Potassium (K

Nitrate Chloride (Cl

)

-

)

Compensation procedures Description

Automatic up to 1000 mg/l interfering ions

when equipped with the
corresponding compensation
electrode (chloride for nitrate
measurement or potassium for
ammonium measurement)

Temperature

measurement

Temperature

compensation

Manual without compensation electrode

by manual entry of the interfering
ions
concentration
(range 1 ... 1000 mg/l).

Sensing element type integrated NTC

Measuring range - 5 °C ... + 60 °C (23 ... 140 °F)

Accuracy ± 0.5 K

Resolution 0.1 K

Response time t

95

< 20 s

automatic in the range 0 °C ... 40 °C (32 ... 104 °F)

9 - 2

ba76000e01 01/2012

VARiON

®Plus

700 IQ Technical data

9.2 Application conditions

Allowed

Measuring medium 0 °C ... 40 °C (32 ... 104 °F)

temperature range

Storage/transport 0 °C ... 40 °C (32 ... 104 °F)

Allowed pH range of the

4 ... 12

measuring medium

Pressure resistance Sensor with the electrodes or blind plugs screwed in and the SACIQ

sensor connection cable connected:

Max. allowed overpressure 2 x 104 Pa (0.2 bar)

Type of protection Sensor with the electrodes or blind plugs screwed in and the SACIQ

sensor connection cable connected:

IP 68, 0.2 bar (2 x 10

4

Pa)

Depth of immersion min. 50 mm; max. 2 m depth

Operating position Electrode support pointing downward (maximum angle to the plumb

line = 60 °)

Fields of application  Control / monitoring in the aeration tank of a waste water treatment

plant

 Water and waste water monitoring

ba76000e01 01/2012

9 - 3

Technical data VARiON

48 55 40

392

Socket SACIQ...

Minimum immersion
depth 50 mm

9.3 General data

Dimensions

®Plus

700 IQ

Weight (without sensor

approx. 670 g with protective hood

connection cable)

Connection technique Connection via SACIQ sensor connection cable

Material

Shaft V4A stainless steel 1.4571

Protective hood POM

Electrode support POM

Temperature probe V4A stainless steel 1.4571

Plug head connector housing POM

Plug, 3-pole ETFE (blue) Tefzel

Electrodes see section 9.5

Instrument safety

Applicable norms – EN 61010-1

– UL 3111-1

– CAN/CSA C22.2 No. 1010.1

®

9 - 4

9.4 Electrical data

Nominal voltage max. 24 VDC

via the IQ S
chapter
IQ S
manual)

Power consumption 0.2 W

Protective class III

ENSOR NET system operating

ENSOR NET (details see

TECHNICAL DATA of the

ba76000e01 01/2012

VARiON

®Plus

700 IQ Technical data

9.5 Data of the VARiON

®Plus

electrodes

9.5.1 Response times

Response time t

90

Measured at 20 °C (68 °F)
and a concentration change

VARiON

®Plus

NH4 VARiON

< 3min < 3min < 3min < 3min

10 to 100 mg/l
NH4-N

5 to 50 mg/l
NO3-N

®Plus

NO3 VARiON

®Plus

5 to 50 mg/l
K

K VARiON

10 to 100 mg/l
Cl

of ...

9.5.2 Materials

VARiON

®Plus

NH4

VARiON

®Plus

NO3

VARiON

®Plus

K VARiON

®Plus

Cl VARiON® Ref

Electrodes

Housing POM POM POM PVC PVC

Clamping ring POM POM POM - -

®Plus

Cl

Membrane soft PVC with

stainless steel
protective
grating

soft PVC with
stainless steel
protective grating

soft PVC with
stainless
steel
protective

ISE element
(solid body)
in epoxy

-

grating

Junction - - - - Porous

PVDF

Sealing ring FPM (Viton

Connection

gold-plated gold-plated gold-plated gold-plated gold-plated

®

)FPM (Viton®)FPM (Viton

®

)FPM (Viton®)FPM (Viton®)

contacts

Storing equipment

Watering cap POM POM POM POM POM

Nut PMMA PMMA PMMA PMMA POM

9.5.3 Weights

VARiON

®Plus

NH4

VARiON

®Plus

NO3

VARiON

®Plus

K VARiON

®Plus

Cl VARiON® Ref

ba76000e01 01/2012

5g 5g 5g 5g 13 g

9 - 5

Technical data VARiON

®Plus

700 IQ

9 - 6

ba76000e01 01/2012

VARiON

®Plus

700 IQ Contact Information

10 Contact Information

10.1 Ordering & Technical Support

Telephone

: [phone]

[phone]
Monday through Friday, 8:00 AM to 5:00 PM ET

Fax

: [phone]

Email

: [e-mail]

Mail: YSI Incorporated

1725 Brannum Lane
Yellow Springs, OH 45387
USA

Internet

: www.ysi.com

When placing an order please have the following information available:

YSI account number (if available) Name and Phone Number
Model number or brief description Billing and shipping address
Quantity Purchase Order or Credit Card

10.2 Service Information

YSI has authorized service centers throughout the United States and
Internationally. For the nearest service center information, please visit

www.ysi.com

directly at 800-897-4151.

When returning a product for service, include the Product Return form
with cleaning certification. The form must be completely filled out for an
YSI Service Center to accept the instrument for service. The Product
Return form may be downloaded at www.ysi.com
‘Support‘ tab.

and click ‘Support’ or contact YSI Technical Support

and clicking on the

ba76000e01 01/2012

10 - 1

Contact Information VARiON

®Plus

700 IQ

10 - 2

ba76000e01 01/2012

VARiON

®Plus

700 IQ Indexes

11 Indexes

11.1 Explanation of the messages

This chapter contains a list of all the message codes and related
message texts that can occur in the log book of the IQ S

®Plus

system for the VARiON

700 IQ sensor.

Note

Information on

 the contents and structure of the log book and

 the structure of the message code

ENSOR NET

is given in the L

OG BOOK chapter of the IQ SENSOR NET system

operating manual.

Note

The last three digits of the message code identify the source of the
message:

 521 = VARiON+700 IQ (armature / component class, ADA adapters)

 395 = VARiON A (ammonium / potassium sensor)

 396 = VARiON N (nitrate sensor)

11.1.1 Error messages

Message code Message text

EA1395 Meas. range exceeded or undercut

* Check process
* Select other meas. range

EA1396 Meas. range exceeded or undercut

* Check process
* Select other meas. range

EA2521 Sensor temperature too high!

* Check process and application

EA3521 Sensor temperature too low!

* Check process and application

EAN395 Potassium measurement: range exceeded or undercut

* Check process

EAO396 Chloride measurement: range exceeded or undercut

* Check process

ba76000e01 01/2012

11 - 1

Indexes VARiON

Message code Message text

EIA521 Incorrect equipment

* for correct electrode equipment see operating manual

ES1521 Component hardware defective

* Contact service

11.1.2 Info messages

Message code Message text

IC3395 K electrode has been successfully calibrated

* For calibration data, see calibration history

IC4396 Cl electrode has been successfully calibrated

* For calibration data, see calibration history

®Plus

700 IQ

IC5395 (this message contains calibration data of the potassium electrode)

IC6396 (this message contains calibration data of the chloride electrode)

IC7395
IC7396

Sensor could not be calibrated,
Measuring with old calibration values
* Check calibration conditions and calibration standard
* View calibration history
* Service sensor immediately
(see operating manual)

ICA395

Electrode: check successful

ICA396

ICB395 K electrode: check successful

ICC396 Cl electrode: check successful

ICD395
ICD396

Electrode: check unsuccessful
Please follow online help.

ICE395 K electrode: check unsuccessful

Please follow online help.

ICF396 Cl electrode: check unsuccessful

Please follow online help.

IIA521 (This message is generated when the electrode equipment is changed.

It informs you of the new assignment of the electrode receptacles)

IAI397 see VARiON A

11 - 2

ba76000e01 01/2012

VARiON

®Plus

700 IQ Indexes

11.2 Status info

The status info is a piece of coded information about the current state
of a sensor. Each sensor sends this status info to the controller. The
status info of sensors consists of 32 bits, each of which can have the
value 0 or 1.

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Status info,

general structure

VARiON

®Plus

700 IQ

1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (general)

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (internal)

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

The bits 0 - 15 are reserved for general information.
The bits 16 - 21 are reserved for internal service information.

You obtain the status info:

 via a manual query in the menu, Einstellungen/Settings/Service/List

of all components (see system operating manual)

 via an automated query

– of a superordinate process control (e. g. when connected to the

Profibus)

– of the IQ Data Server (see operating manual of the

IQ S

ENSOR NET software pack)

Note

The evaluation of the status info, e.g. in the case of an automated
query, has to be made individually for each bit.

Status bit Explanation

Status info

ba76000e01 01/2012

Bit 0 Component hardware defective

Bit 1-31 -

11 - 3

Indexes VARiON

®Plus

700 IQ

11 - 4

ba76000e01 01/2012

1725 Brannum Lane
Yellow Springs, Ohio 45387 USA
[phone]
800-765-4974 (US)
FAX [phone]
Email: [e-mail]
Internet: www.ysi.com