Xylem Multi-3410 User Manual

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Multi 3410

Operating manual

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Digital pH / D.O. /

conductivity meter

for a digital IDS sensor

Multi 3410

Accuracy when

going to press

The use of advanced technology and the high quality standard of our instruments are the result of a continuous development. This may result in differences between this operating manual and your meter. Also, we cannot guarantee that there are absolutely no errors in this manual. Therefore, we are sure you will understand that we cannot accept any legal claims resulting from the data, figures or descriptions.

Reproduction in whole - or even in part - is prohibited without the express written permission of WTW GmbH, Weilheim. Printed in Germany.

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Multi 3410 Contents

Multi 3410 - Contents

1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.1 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.3 Socket field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.4 Automatic sensor recognition . . . . . . . . . . . . . . . . . . . . . 12

1.5 IDS sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.6 IDS adapter for analog sensors . . . . . . . . . . . . . . . . . . . 13

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 16

3 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.1 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.2 Power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.3 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.3.1 Inserting the rechargeable batteries. . . . . . . . . . 19

3.3.2 Connecting the power pack / charging the

batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.3.3 Switching on the meter. . . . . . . . . . . . . . . . . . . . 21

3.3.4 Setting the date and time . . . . . . . . . . . . . . . . . 22

4 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.1 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.2 Login with a user name. . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.3 General operating principles . . . . . . . . . . . . . . . . . . . . . . 26

4.3.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . 26

4.3.2 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.3.3 Example 1 on navigation: Setting the language. 29

4.3.4 Example 2 on navigation: Setting the date and

time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.4 Sensor-independent settings . . . . . . . . . . . . . . . . . . . . . 33

4.4.1 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.4.2 Data storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4.4.3 Automatic Stability control . . . . . . . . . . . . . . . . . 35

4.4.4 Automatic switch-off . . . . . . . . . . . . . . . . . . . . . . 35

4.4.5 Display illumination . . . . . . . . . . . . . . . . . . . . . . 35

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Contents Multi 3410

4.5 Sensor info. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

4.6 pH value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

4.6.1 General information . . . . . . . . . . . . . . . . . . . . . . 38

4.6.2 Measuring the pH value . . . . . . . . . . . . . . . . . . . 39

4.6.3 Settings for pH measurements . . . . . . . . . . . . . . 41

4.6.4 pH calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.6.5 Calibration interval . . . . . . . . . . . . . . . . . . . . . . . 49

4.6.6 Carrying out an automatic calibration (AutoCal) . 50

4.6.7 Carrying out a manual calibration (ConCal) . . . . 54

4.6.8 Displaying calibration records. . . . . . . . . . . . . . . 58

4.6.9 Continuous measurement control (CMC

function) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

4.6.10 QSC function (sensor quality control) . . . . . . 60

4.7 ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

4.7.1 General information . . . . . . . . . . . . . . . . . . . . . . 63

4.7.2 Measuring the ORP . . . . . . . . . . . . . . . . . . . . . . 63

4.7.3 Settings for ORP measurements . . . . . . . . . . . . 65

4.8 Dissolved oxygen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

4.8.1 General information . . . . . . . . . . . . . . . . . . . . . . 66

4.8.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

4.8.3 Settings for D.O. sensors (menu or measurement and calibration settings) 70

4.8.4 FDO

Check procedure (check of the FDO®

925) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

4.8.5 D.O. calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 74

4.8.6 Displaying calibration records. . . . . . . . . . . . . . . 77

4.9 Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

4.9.1 General information . . . . . . . . . . . . . . . . . . . . . . 78

4.9.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

4.9.3 Temperature compensation . . . . . . . . . . . . . . . . 81

4.9.4 Settings for IDS conductivity sensors . . . . . . . . . 82

4.9.5 Determining the cell constant

(calibration in control standard) . . . . . . . . . . . . . 85

4.9.6 Displaying calibration records. . . . . . . . . . . . . . . 87

4.10 Data storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

4.10.1 Manual storage. . . . . . . . . . . . . . . . . . . . . . . . . . 89

4.10.2 Automatic storage at intervals . . . . . . . . . . . . 89

4.10.3 Editing the measurement data storage. . . . . . . . 92

4.10.4 Erasing the measurement data storage . . . . . . . 93

4.11 Transmitting data (USB interfaces) . . . . . . . . . . . . . . . . . 94

4.11.1 Outputting current measurement data . . . . . . . . 94

4.11.2 Transmitting data (to a PC). . . . . . . . . . . . . . . . . 94

4.11.3 Connecting the PC / USB-B interface (USB

Device) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

4.11.4 Options for data transmission to a PC (USB-B

interface) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

4.11.5 Connecting the USB memory device / USB-A

interface (USB Host) . . . . . . . . . . . . . . . . . . . 96

4.11.6 Data transmission to a USB memory device

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Multi 3410 Contents

(USB-A interface). . . . . . . . . . . . . . . . . . . . . . . . 96

4.12 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

4.12.1 Resetting the measurement settings. . . . . . . . . 97

4.12.2 Resetting the system settings . . . . . . . . . . . . . . 99

5 Maintenance, cleaning, disposal. . . . . . . . . . . . . . . . 101

5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

5.1.1 Replacing the rechargeable batteries . . . . . . . 101

5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

5.3 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

5.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

6.1 General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

6.2 pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

6.3 Dissolved oxygen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

6.4 Conductivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

7 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

7.1 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

7.2 Measuring ranges, resolution, accuracy . . . . . . . . . . . . 110

8 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

9 Appendix: Firmware update. . . . . . . . . . . . . . . . . . . . 115

9.1 Firmware update for the meter Multi 3410 . . . . . . . . . . 115

9.2 Firmware-Update for IDS Sensors . . . . . . . . . . . . . . . . 116

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Contents Multi 3410

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Multi 3410 Overview

1Overview

The compact, digital precision meter Multi 3410 enables you to carry out pH measurements, ORP measurements, conductivity measurements and dissolved oxygen (D.O.) measurements quickly and reliably.

The Multi 3410 provides the maximum degree of operating comfort, reliability and measuring certainty for all applications.

The Multi 3410 supports you in your work with the following functions:

z proven calibration procedures

z automatic stability control (AR),

z automatic sensor recognition,

z CMC (continuous measurement control)

z QSC (sensor quality control).

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1 Keypad

2 Display

3 Socket field

Overview Multi 3410

ARCAL

PRT ESCRCLSTO

ENTER

Multi 3410

CAL

ARAR

The two USB interfaces (USB-A and USB-B) enable you to:

z Transmit data to

– a USB memory device

–a PC

z Update the meter firmware.

1.1 Keypad

In this operating manual, keys are indicated by brackets <..> . The key symbol (e.g. <MENU/ENTER>) generally indicates a short keystroke (under 2 sec) in this operating manual. A long keystroke (approx. 2 sec) is indicated by the underscore behind the key symbol

<F1>: <F2>:

(e.g. <MENU/ENTER

Softkeys providing situation dependent functions, e.g.:

<F1>/[Info]: View information on a sensor

_>).

<On/Off>: Switches the meter on or off

<M>: Selects the measured parameter

<CAL>: <CAL

_>:

Calls up the calibration procedure Displays the calibration data

<AR> Freezes the measured value (HOLD function)

Switches the AutoRead measurement on or off

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Multi 3410 Overview

ENTER

PRT

22.09.2009 08:00Info

<STO>: <STO

_>:

<RCL>: <RCL

_>:

<S><T>: <W><X>:

<MENU/ENTER>: <MENU/ENTER

<PRT>

<PRT

_>:

1.2 Display

Saves a measured value manually Opens the menu for the automatic save function

Displays the manually stored measured values Displays the automatically stored measured values

Menu control, navigation

Opens the menu for measurement settings / Confirms entries Opens the menu for system settings

Outputs stored data to the interface Outputs displayed data to the interface in intervals

1 Status information

2 Measured value (with unit)

3 Measured parameter

4 Continuous measurement control (CMC function)

5 Sensor symbol (calibration evaluation, calibration interval)

6 Measured temperature (with unit)

7 Softkeys and date + time

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Overview Multi 3410

Function display

indicators

AutoCal e.g. TEC

Calibration with automatic buffer recognition, e.g. with the buffer set: Technical buffers

ConCal Calibration with any buffers

Error An error occurred during calibration

AR Stability control (AutoRead) is active

HOLD Measured value is frozen (<AR> key)

Batteries are almost empty

Mains operation

Mains operation with charge function Batteries are automatically charged in the background.

Data are automatically output to the USB-B interface at intervals

Data are output to the USB-A interface (USB flash drive)

Power supply via the USB-B interface Batteries are not being charged

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Multi 3410 Overview

1.3 Socket field

Connectors:

Digital sensors (pH, ORP, conductivity, D.O.)

2 Power pack

3 USB-A (host) interface

4 USB B (device) interface

5 Service interface

CAUTION

Only connect sensors to the meter that cannot return any voltages or currents that are not allowed (> SELV and > current circuit with current limiting). WTW IDS sensors and IDS adapters meet these requirements.

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Overview Multi 3410

1.4 Automatic sensor recognition

The automatic sensor recognition for IDS sensors allows

z to operate an IDS sensor at different meters without recalibration

z to operate different IDS sensors at one meter without recalibration

z to assign measurement data to an IDS sensor

– Measurement datasets are always stored and output with the

sensor name and sensor series number.

z to assign calibration data to an IDS sensor

– Calibration data and calibration history are always stored and

output with the sensor name and sensor series number.

z to activate the correct cell constant for conductivity sensors auto-

matically

z to hide menus automatically that do not concern this sensor

To be able to use the automatic sensor recognition, a meter that supports the automatic sensor recognition (e.g. Multi 3410) and a digital IDS sensor are required.

In digital IDS sensors, sensor data are stored that clearly identify the sensor. The sensor data are automatically taken over by the meter.

1.5 IDS sensors

IDS sensors

z support the automatic sensor recognition

z show only the settings relevant to the specific sensor in the setting

z process signals in the sensor digitally so that precise and interfer-

ence-free measurements are enabled even with long cables

z facilitate to assign a sensor to a measured parameter with differently

colored couplings

z have quick-lock couplings with which to fix the sensors to the meter.

Note

Information on available IDS sensors is given on the Internet and in the WTW catalog, "Laboratory and field instrumentation".

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Multi 3410 Overview

Sensor data from IDS

sensors

IDS sensors transmit the following sensor data to the meter:

z SENSOR ID

– Sensor name

– Sensor series number

z Calibration data

– Calibration date

– Calibration characteristics

– Calibration interval

– Selected buffer set (IDS pH sensors only)

– Cell constant (IDS conductivity sensors only)

– Calibration history of the last 10 calibrations

z Measurement settings (IDS conductivity sensors only)

– The set measured parameter

– The set reference temperature

– The set temperature coefficient

– The set TDS factor

The calibration data are updated in the IDS sensor after each calibration procedure. A message is displayed while the data are being updated in the sensor.

Note

In the measured value display, you can display the sensor name and series number of the selected sensor with the [Info] softkey. You can then display all further sensor data stored in the sensor with the [More] softkey.

1.6 IDS adapter for analog sensors

With the aid of an IDS adapter, you can also operate analog sensors on the Multi 3410. An IDS adapter and analog sensor together behave like an IDS sensor. The measuring electronics with the stored adapter data are in the adapter head. The adapter data correspond to the sensor data.

Note

Information on available IDS adapters is given on the Internet and in the WTW catalog, "Laboratory and field instrumentation". Detailed information on the IDS adapter is given in the operating manual of the adapter.

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Overview Multi 3410

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Multi 3410 Safety

2 Safety

This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the meter. Consequently, all responsible personnel must read this operating manual before working with the meter. The operating manual must always be available within the vicinity of the meter.

Target group The meter was developed for work in the field and in the laboratory.

Thus, we assume that, as a result of their professional training and experience, the operators will know the necessary safety precautions to take when handling chemicals.

Safety instructions Safety instructions in this operating manual are indicated by the warn-

ing symbol (triangle) in the left column. The signal word (e.g. "Caution") indicates the level of danger:

Further notes

WARNING

indicates instructions that must be followed precisely in order to avoid possibly great dangers to personnel.

CAUTION

indicates instructions that must be followed precisely in order to avoid the possibility of slight injuries or damage to the meter 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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Safety Multi 3410

2.1 Authorized use

The authorized use of the meter consists exclusively of the measurement of the pH, ORP, conductivity and dissolved oxygen in a field and laboratory environment. The technical specifications as given in chapter 7 T

ECHNICAL DATA must

be observed. Only the operation and running of the meter according to the instructions given in this operating manual is authorized. Any other use is considered unauthorized.

2.2 General safety instructions

This meter is constructed and tested in compliance with the IEC 1010 safety regulations for electronic measuring instruments. It left the factory in a safe and secure technical condition.

Function and

operational safety

The smooth functioning and operational safety of the meter can only be guaranteed if the generally applicable safety measures and the specific safety instructions in this operating manual are followed during operation.

The smooth functioning and operational safety of the meter can only be guaranteed under the environmental conditions that are specified in chapter 7 T

ECHNICAL DATA.

If the meter was transported from a cold environment to a warm environment, the formation of condensate can lead to the faulty functioning of the meter. In this event, wait until the temperature of the meter reaches room temperature before putting the meter back into operation.

CAUTION

The meter is only allowed to be opened by authorized personnel.

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Multi 3410 Safety

Safe operation If safe operation is no longer possible, the meter must be taken out of

service and secured against inadvertent operation! Safe operation is no longer possible if the meter:

z has been damaged in transport

z has been stored under adverse conditions for a lengthy period of

time

z is visibly damaged

z no longer operates as described in this manual.

If you are in any doubt, please contact the supplier of the meter.

Obligations of the

purchaser

The purchaser of this meter must ensure that the following laws and guidelines are observed when using dangerous substances:

z EEC directives for protective labor legislation

z National protective labor legislation

z Safety regulations

z Safety datasheets of the chemical manufacturers.

CAUTION

In addition to the safety instructions mentioned here, also follow the safety instructions of the sensors used. The operating manuals of the sensors are available on the supplied CD and on the Internet under www.WTW.com.

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Safety Multi 3410

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Multi 3410 Commissioning

3 Commissioning

3.1 Scope of delivery

z Meter Multi 3410

z 4 NiMH rechargeable batteries 1.2 V Mignon type AA

z USB cable (A plug on mini B plug)

z Power pack

z Short instructions

z Detailed operating manual (4 languages)

z CD-ROM

3.2 Power supply

The Multi 3410 is supplied with power in the following ways:

z Battery operation with NiMh rechargeable batteries

z Mains operation with the supplied power pack.

The NiMh rechargeable batteries are automatically charged while the power pack is connected.

z USB operation via a connected USB-B cable.

The inserted NiMh rechargeable batteries are not charged

3.3 Initial commissioning

Perform the following activities:

z Insert the rechargeable batteries and charge them

z Connect the power pack (mains operation / battery charging)

z Switch on the meter

z Set the date and time

3.3.1 Inserting the rechargeable batteries

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1 Unscrew the two screws (1) on the underside of the meter.

2 Open the battery compartment (2) on the underside of the

meter.

Commissioning Multi 3410

3 Place four rechargeable batteries (type Mignon AA) in the bat-

tery compartment.

CAUTION

Make sure that the poles of the rechargeable batteries are positioned correctly. The

± signs on the batteries must correspond to the ± signs in the

battery compartment.

4 Close the battery compartment (2) and tighten the screws (1).

3.3.2 Connecting the power pack / charging the batteries

CAUTION

The line voltage at the operating site must lie within the input voltage range of the original power pack (see section 7.1).

CAUTION

Use original power packs only (see section 7.1).

CAUTION

The batteries in the battery compartment are automatically charged when the power pack is connected. Make sure that only NiMH rechargeable batteries are in the battery compartment. The charging process is optimized for NiMH rechargeable batteries. Other battery types can cause damage during the charging process.

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Multi 3410 Commissioning

1 Connect the plug of the power pack to the socket for the power

pack on the Multi 3410.

2 Connect the original power pack to an easily accessible power

outlet.

During mains operation, one of the following symbols is displayed:

Mains operation with charge function Batteries are automatically charged in the background.

Mains operation

Note

Charge the batteries completely prior to putting the meter into operation for the first time. The charging process takes approx. 10 hours. The

symbol is displayed if the batteries are nearly discharged.

3.3.3 Switching on the meter

1 Press the <On/Off> key.

The meter performs a self-test. The display shows the manufacturer's logo while the self-test is being performed.

2 Connect the sensor.

The meter switches to the measuring mode (measured value display).

Note

The meter has an energy saving feature to avoid unnecessary power consumption during battery operation. The energy saving feature switches off the meter during battery operation if no key is pressed during the adjusted interval. (How to set the switch-off interval, see section 4.4). The switch-off interval of the energy saving feature is not active when the meter is supplied with power via the power pack or the USB-B cable.

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Commissioning Multi 3410

3.3.4 Setting the date and time

3 See section 4.3.4

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Multi 3410 Operation

22.09.2009 08:00Info

4 Operation

4.1 Switching on the meter

Switching on Press the <On/Off> key.

The meter performs a self-test. The display shows the manufacturer's logo while the self-test is being performed. If a sensor is connected, the measured value display appears.

Switching off Press the <On/Off> key.

4.2 Login with a user name

After activation of the user administration by the administrator, measurements are only possible after login with a user name. The user name is documented with the measured values and in records.

All user names entered by the administrator are listed in the User name menu. The administrator determines for each user whether or not a password is required for login to the meter.

If the Password menu item is grayed out, no password is required for login.

1 Switch on the meter with <On/Off>.

The Login dialog box appears.

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Operation Multi 3410

User name Admin Password #### Change password

22.09.2009 08:00

2 , enter the Benutzername menu item and confirm with <MENU/

ENTER>.

The user name is highlighted.

3 <MENU/ENTER>.

Note

The login is done immediately if no password is required. If a sensor is connected the measured value display appears.

4 If a password is required:

Using , enter the Password menu item and confirm with

<MENU/ENTER>.

Note

The user specifies the password when he or she first logs in with a user name. A valid password consists of 4 digits. The user can change the password with the next login.

5 .

. the password was completely entered, confirm with <MENU/ ENTER>. The login takes place. If a sensor is connected the measured value display appears.

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Multi 3410 Operation

Changing the password If the administrator has set up the access with password protection:

1 Switch on the meter with <On/Off>.

The Login dialog box appears.

2 , enter the Benutzername menu item and confirm with <MENU/

ENTER>. The user name is highlighted.

3 <MENU/ENTER>.

4 , enter the Change password<MENU/ENTER>.

5 Enter the old password in the Password and and confirm with

<MENU/ENTER>.

6 Enter the new password in the New password and and con-

firm with <MENU/ENTER>. The password is changed. The login takes place. If a sensor is connected the measured value display appears.

Forgotten the

password?

Contact the administrator.

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Operation Multi 3410

4.3 General operating principles

This section contains basic information on the operation of the Multi 3410.

Operating elements,

display

Operating modes,

navigation

An overview of the operating elements and the display is given in section 1.1 and section 1.2.

An overview of the operating modes and navigation of the Multi 3410 is given in section 4.3.1 and section 4.3.2.

4.3.1 Operating modes

The meter has the following operating modes:

z Measuring

The measurement data of the connected sensor is shown in the measured value display

z Calibration

The course of a calibration with calibration information, functions and settings is displayed

z Storage in memory

The meter stores measuring data automatically or manually

z Data transmission

The meter transmits measuring data and calibration records to a USB-B interface automatically or manually.

z Setting

The system menu or a sensor menu with submenus, settings and functions is displayed

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Multi 3410 Operation

General Interface Clock function Service information Reset

System

22.09.2009 08:00

Language: Deutsch Acoustic signal: Off Volume 9 Illumination: On Brightness: 12 Switchoff time: 1 h Temperature unit: °C Stability control

: On

General

22.09.2009 08:00

4.3.2 Navigation

Measured value display In the measured value display, you can

z open the menu for calibration and measurement settings with

<MENU/ENTER> (short

keystroke)

z open the system menu with the sensor-independent settings by

pressing <MENU/ENTER>Storage & config for a <MENU/

ENTER

_>long keystroke, approx. 2 s).

z change the display in the selected measuring window (e. g. pH ><−

mV) by pressing <M>.

Menus and dialogs The menus for settings and dialogs in procedures contain further sub-

menus. The selection is made with the <S><T> keys. The current selection is displayed with a frame.

z Submenus

The name of the submenu is displayed at the upper edge of the frame. Submenus are opened by confirming with <MENU/ENTER>. Example:

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z Settings

Settings are indicated by a colon. The current setting is displayed on the right-hand side. The setting mode is opened with <MENU/ ENTER>. Subsequently, the setting can be changed with <S><T> and <MENU/ENTER>. Example:

Operation Multi 3410

Calibration record Calibration data storage Buffer: TEC Single-point calibration: Yes Calibration interval: 7 d Unit for slope: mV/pH

[i] 2.00 4.01 7.00 10.01

22.09.2009 08:00

Calibration record Calibration data storage Buffer: TEC Single-point calibration: Yes Calibration interval: 7 d Unit for slope: mV/pH

[i] 2.00 4.01 7.00 10.01

22.09.2009 08:00

z Functions

Functions are designated by the name of the function. They are immediately carried out by confirming with <MENU/ENTER>. Example: Display the Calibration record function.

Messages Information is marked by the [

Example:

Note

The principles of navigation are explained in the two following sections by reference of examples:

z Setting the language (section 4.3.3)

z Setting the date and time (see section 4.3.4).

] symbol. They cannot be selected.

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Multi 3410 Operation

22.09.2009 08:00Info

System Data storage

Storage & config

22.09.2009 08:00

4.3.3 Example 1 on navigation: Setting the language

1 Press the <On/Off> key.

The measured value display appears. The instrument is in the measuring mode.

2 Open the Storage & config menu with <MENU/ENTER_>.

The instrument is in the setting mode.

3 Select the System submenu with <S><T>.

The current selection is displayed with a frame.

4 Open the System submenu with <MENU/ENTER>.

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Operation Multi 3410

General Interface Clock function Service information Reset

System

22.09.2009 08:00

Language: Deutsch Acoustic signal: Off Illumination: On Kontrast: 50 % Switchoff time: 1 h

General

22.09.2009 08:00

Language: Deutsch Acoustic signal: Off Illumination: On Brightness: 50 % Switchoff time: 1 h

General

22.09.2009 08:00

5 Select the General submenu with <S><T>.

The current selection is displayed with a frame.

6 Open the General

submenu with <MENU/ENTER>.

7 Open the setting mode for the Language with <MENU/

ENTER>.

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8 Select the required language with <S><T>.

9 Confirm the setting with <MENU/ENTER>.

The meter switches to the measuring mode. The selected language is active.

4.3.4 Example 2 on navigation: Setting the date and time

The measuring instrument has a clock with a date function. The date and time are indicated in the status line of the measured value display. When storing measured values and calibrating, the current date and time are automatically stored as well.

The correct setting of the date and time and date format is important for the following functions and displays:

Setting the date, time

and date format

z Current date and time

z Calibration date

z Identification of stored measured values.

Therefore, check the time at regular intervals.

Note

After a fall of the supply voltage (empty batteries), the date and time are reset to 01.08.2009 00, 00:00 hours.

The date format can be switched from the display of day, month, year (dd.mm.yy) to the display of month, day, year (mm/dd/yy or mm.dd.yy).

1 In the measured value display:

Open the Storage & config menu with <MENU/ENTER The instrument is in the setting mode.

2 Select and confirm the System / Clock function menu with

<S><T> and <MENU/ENTER>. The setting menu for the date and time opens up.

_>.

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Operation Multi 3410

Date format: dd.mm.yy Date: 30.09.2009 Time: 14:53:40

Clock function

22.09.2009 08:00

3 Select and confirm the Time menu with <S><T> and <MENU/

ENTER>.

The hours are highlighted.

4 Change and confirm the setting with <S><T> and <MENU/

ENTER>. The minutes are highlighted.

5 Change and confirm the setting with <S><T> and <MENU/

ENTER>. The seconds are highlighted.

6 Change and confirm the setting with <S><T> and <MENU/

ENTER>. The time is set.

7 If necessary, set the Date and Date format. The setting is made

similarly to that of the time.

8 If necessary, select and set the Date with <S><T> and

<MENU/ENTER>.

9 To make further settings, switch to the next higher menu level

with <ESC>. or Switch to the measured value display with <M>. The instrument is in the measuring mode.

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4.4 Sensor-independent settings

The Storage & config menu includes the following settings:

z System (see section 4.4.1).

z Data storage (see section 4.4.2)

4.4.1 System

Overview The following sensor-independent meter characteristics can be

adjusted in the Storage & config/System menu:

z Menu language

z Beep on keystroke

z Loudness of the beep

z Illumination

z Brightness

z Interval of the automatic switchoff

z Data interface

z Clock and date function

z Reset of all sensor-independent system settings to the default con-

dition

Settings To open the Storage & config menu, press the <MENU/ENTER

in the measured value display. After completing the settings, switch to the measured value display with <M>. Default settings are printed in bold.

Menu item Setting Description

System / General / Language Deutsch

English

(more)

System / General / Acoustic signal

Beep 1

Beep 2 off

Selects the menu language

Switches on/off the beep on keystroke

_> key

System / General / Volume 0 ... 5 ... 10 Changes the loudness of the

System / General / Illumination Auto

System / General / Brightness 0 ... 10 ... 22 Changes the display bright-

System / General / Switchoff time 10 min ... 1h ... 24 h Adjusts the switch-off time

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beep

Switches the display illumination on/off

ness

Operation Multi 3410

Menu item Setting Description

System / General / Temperature unit

°C

°F

System / General / Stability control on

off

System / Interface / USB Host on

off

System / Interface / Baud rate 1200, 2400, 4800,

9600, 19200

Temperature unit, degrees Celsius or degrees Fahrenheit. All temperatures are displayed with the selected unit.

Switches on or off the automatic stability control during measurement (see section

4.4.3)

Switches on or off the USB Host interface. You can switch off the power supply of the USB Host interface to extend the operating time of the batteries. The USB Host interface has to be switched on in order to transfer data to a USB memory device.

Baud rate of the USB Device interface

System / Interface / Output format ASCII

CSV

Output format for data transmission For details, see section 4.11

System / Interface / Decimal separator

Dot (xx.x) Comma (xx,x)

Decimal separator

System / Interface / Output header Output of a header for Output

format: CSV

System /Clock function Date format

Date

Settings of time and date. For details, see section 4.3.4

Time

System /Service information Hardware version and software

version of the meter are displayed.

System /Reset - Resets the system settings to

the default values. For details, see section 4.12.2

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4.4.2 Data storage

This menu contains all functions to display, edit and erase stored measured values.

Note

Detailed information on the storage functions of the Multi 3410 is given in section 4.10.

4.4.3 Automatic Stability control

The automatic Stability control (AutoRead) function continuously checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of measured values.

You can activate or switch off the automatic Stability control function (see section 4.4).

The measured parameter flashes on the display

z as soon as the measured value is outside the stability range

z when you switch over between the measured parameters with <M>.

z when the automatic Stability control is switched off.

4.4.4 Automatic switch-off

The instrument has an automatic switchoff function in order to save the batteries (see section 4.4.1). The automatic switchoff switches off the measuring instrument if no key is pressed for an adjustable period.

The automatic switchoff is not active

z if the power pack is connected

z if a USB-B cable is connected

z if the Automatic data storage function is active, or with automatic

data transmission

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4.4.5 Display illumination

The meter automatically switches the display illumination to energy saving mode if no key is pressed for 20 seconds. After a further 60 seconds, the meter switches off the display illumination completely. The illumination is switched on with the next keystroke again.

You can also generally switch on the display illumination (see section

4.4.1).

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22.09.2009 08:00

Info

22.09.2009 08:00More

4.5 Sensor info

You can display the current sensor data and sensor settings of a connected sensor at any time. The sensor data are available in the measured value display with the [Info] softkey.

1 In the measured value display:

Display the sensor data (sensor name, series number) with [Info].

2 Display further sensor data (settings) with [More].

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30.09.2009 08:00

Man. temperature: 25 °C pH resolution 0.001 mV resolution 0.1 Buffer TEC Calibration interval 7d Unit for slope mV/pH QSC:

SenTix 940 B092500013

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Operation Multi 3410

4.6 pH value

4.6.1 General information

You can measure the following parameters:

z pH value [ ]

z Sensor voltage [mV]

Note

The sensor connection and the USB-B (device) interface are galvanically isolated. This enables interference-free measurements in grounded measuring media.

Temperature

measurement

For reproducible pH measurements, it is essential to measure the temperature of the test sample. IDS sensors measure the temperature with a temperature sensor integrated in the IDS sensor.

When operating a sensor without integrated temperature sensor, e.g. via an IDS pH adapter, you have to determine and input the temperature of the measuring medium first.

Preparatory activities Perform the following preparatory activities when you want to measure:

1 Connect the IDS pH sensor to the meter.

The pH measuring window is displayed.

2 If necessary, select the measured parameter with <M>.

3 If necessary, calibrate or check the IDS pH sensor.

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4.6.2 Measuring the pH value

1 Perform the preparatory activities according to section 4.6.1.

2 Immerse the IDS pH sensor in the test sample.

Stability control

(AutoRead )

3 Select the pH or mV display with <M>.

The stability control function (AutoRead) continually checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of measured values. The display of the measured parameter flashes until a stable measured value is available.

You can start the Stability control manually at any time, irrespective of the setting for automatic Stability control (see section 4.4.3) in the Sys- tem menu.

1 Freeze the measured value with <AR>.

The [HOLD] status indicator is displayed.

2 Using <MENU/ENTER>, activate the Stability control function

manually. The [AR] status indicator appears while the measured value is assessed as not stable. A progress bar is displayed and the display of the measured parameter flashes. The [HOLD][AR] status indicator appears as soon as a stable measured value is recognized. The progress bar disappears and the display of the measured parameter stops flashing. The current measurement data is output to the interface. Measurement data meeting the stability control criterion is marked by AR.

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Note

You can prematurely terminate the Stability control function manually with <MENU/ENTER> at any time. If the Stability control function is pre- maturely terminated, the current measurement data are output to the interface without the AutoRead info.

3 Release the frozen measured value again with <AR> or <M>.

The [AR] status display disappears. The display switches back to the previous indication.

Criteria for a stable

measured value

The Stability control function checks whether the measured values are stable within the monitored time interval.

Measured

Time interval Stability in the time interval

parameter

pH value 15 seconds

Temperature 15 seconds

Δ pH: Better than 0.01

Δ T (° C): Better than 0.02

The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer.

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4.6.3 Settings for pH measurements

Overview The following settings are possible for pH measurements:

z Calibration record (display)

z Calibration data storage (display)

z Calibration interval

z Buffers for calibration

z Single-point calibration

z Unit for slope

z Resolution

Settings The settings are made in the menu for calibration and measurement

settings of the pH/ORP measurement. To open the settings, display the required parameter in the measured value display and press the <MENU/ENTER> key. After completing the settings, switch to the measured value display with <M>. Default settings are printed in bold.

Menu item Possible setting Description

Calibration /Calibration record - Displays the calibration record of the last cal-

ibration

Calibration /Calibration data storage

Calibration / Calibration data storage / Copy to USB flash

- Displays the last calibration records (max.

10)

- Outputs the calibration data storage to a connected USB flash drive

drive

Calibration / Calibration data storage / Output to RS232/USB

Calibration /Buffer TEC

- Outputs the calibration data storage to the interface

Buffer sets to be used for pH calibration.

NIST/DIN ConCal

For further buffers and details, see section

4.6.4.

...

Calibration /Single-point calibration

yes

Quick calibration with 1 buffer

Calibration /Calibration interval 1 ... 7 ... 999 d Calibration interval for the IDS pH sensor (in

days).

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The meter reminds you to calibrate regularly by the flashing sensor symbol in the measuring window.

Operation Multi 3410

Menu item Possible setting Description

Calibration /Unit for slope mV/pH

Unit of the slope.

The % display refers to the Nernst slope of

-59.2 mV/pH (100 x determined slope/Nernst slope).

QSC /First calibration - Starts the initial calibration with QSC buffers.

This menu item is only available as long as no initial calibration was carried out with the connected IDS sensor.

QSC /Record of first calibration - Displays the calibration record of the QSC ini-

tial calibration

QSC /Control calibration - Starts the control calibration with QSC buf-

fers.

This menu item is only available if an initial calibration was carried out with the connected IDS sensor.

Man. temperature -25 ... +25 ...

+130 °C

Entry of the manually determined temperature

This menu item is only available if an IDS adapter and is connected.

pH resolution 0.001

Resolution of the pH display

0.01

0.1

mV resolution 0.1

Resolution of the mV display

Reset - Resets all sensor settings to the delivery con-

dition (see section 4.12.1)

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4.6.4 pH calibration

Why calibrate? During the operation of an IDS pH sensor, the zero point (asymmetry)

and slope of the sensor change with time.As a result, an inexact measured value is displayed. Calibration determines the current values of the zero point and slope of the pH sensor and stores them in the measuring instrument. Thus, you should calibrate at regular intervals.

When do you have to

calibrate?

Buffer sets for

calibration

z When the calibration interval has expired

You can use the buffer sets quoted in the table for an automatic calibration. The pH values are valid for the specified temperature values. The temperature dependence of the pH values is taken into consideration during the calibration.

No. Buffer set * pH values at

1 ConCal Any Any

2 NIST/DIN

DIN buffers according to DIN 19266 and NIST Traceable Buffers

1.679

4.006

6.865

25 °C

9.180

12.454

3 TEC

WTW Technical buffers

2.000

4.010

25 °C

7.000

10.011

4 Merck 1* 4.000

20°C

7.000

9.000

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5 Merck 2 * 1.000

6.000

8.000

13.000

6 Merck 3 * 4.660

6.880

9.220

7 Merck 4 * 2.000

4.000

7.000

10.000

20°C

Operation Multi 3410

No. Buffer set * pH values at

8 Merck 5 * 4.010

7.000

10.000

9 DIN 19267 1.090

4.650

6.790

9.230

10 Mettler Toledo US * 1.679

4.003

7.002

10.013

11 Mettler Toledo EU * 1.995

4.005

7.002

9.208

12 Fisher 1* 2.007

4.002

7.004

10.002

13 Fluka BS * 4.006

6.984

8.957

25 °C

14 Radiometer * 1.678

4.005

7.000

9.180

15 Baker * 4.006

6.991

10.008

16 Metrohm * 3.996

7.003

8.999

17 Beckman * 4.005

7.005

10.013

18 Hamilton DC * 4.005

7.002

10.013

19 Precisa * 3.996

7.003

8.999

25 °C

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No. Buffer set * pH values at

8 Merck 5 * 4.010

7.000

10.000

9 DIN 19267 1.090

4.650

6.790

9.230

10 Mettler Toledo US * 1.679

4.003

7.002

10.013

11 Mettler Toledo EU * 1.995

4.005

7.002

9.208

12 Fisher 1* 2.007

4.002

7.004

10.002

13 Fluka BS * 4.006

6.984

8.957

25 °C

14 Radiometer * 1.678

4.005

7.000

9.180

15 Baker * 4.006

6.991

10.008

16 Metrohm * 3.996

7.003

8.999

17 Beckman * 4.005

7.005

10.013

18 Hamilton DC * 4.005

7.002

10.013

19 Precisa * 3.996

7.003

8.999

25 °C

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Operation Multi 3410

No. Buffer set * pH values at

20 Reagecon TEC * 2.000

25 °C

4.010

7.000

10.000

21 Reagecon 20 * 2.000

20°C

4.000

7.000

10.000

13.000

22 Reagecon 25 * 2.000

25 °C

4.000

7.000

10.000

13.000

23 Riedel-de Haen * 2.000

20°C

4.000

7.000

10.000

* Brand names or trade names are trademarks of their respective

owners protected by law.

Note

The buffers are selected in the menu, pH / <MENU/ENTER> / Calibra- tion / Buffer (see section 4.6.3).

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Calibration points Calibration can be performed using one to five buffer solutions in any

order (single-point to five-point calibration). The meter determines the following values and calculates the calibration line as follows:

Determined

Displayed calibration data

values

1-point Asy z Zero point = Asy

z Slope = Nernst slope

(-59.2 mV/pH at 25 °C)

2-point Asy

Slp.

3-point to 5-point

Asy Slp.

z Zero point = Asy

z Slope = Slp.

z Zero point = Asy

z Slope = Slp.

The calibration line is calculated by linear regression.

Note

You can display the slope in the units, mV/pH or % (see section 4.6.3).

Stability control The calibration procedure automatically activates the stability control

function. The current measurement with stability control can be terminated at any time (accepting the current value).

Calibration record The new calibration values are displayed when a calibration procedure

is completed.

Display calibration data

and output to interface

You can have the data of the last calibration displayed (see section

4.6.8). Subsequently, you can transmit the displayed calibration data to the interface, e. g. to a PC, with the <PRT> key.

Note

The calibration record is automatically transmitted to the interface after calibrating.

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Operation Multi 3410

Multi 3410 Ser. no. 09250023

CALIBRATION pH Calibration date 31.07.2009 16:13:33 SenTix 940 Ser. no. B092500013

TEC Buffer 1 4.01 Buffer 2 7.00 Buffer 3 10.01 Voltage 1 184.0 mV 24.0 °C Voltage 2 3.0 mV 24.0 °C Voltage 3 -177.0 mV 24.0 °C Slope -60.2 mV/pH Asymmetry 4.0 mV Sensor +++

etc...

Sample record

Calibration evaluation After calibrating, the meter automatically evaluates the calibration. The

zero point and slope are evaluated separately. The worse evaluation of both is taken into account. The evaluation appears on the display and in the calibration record.

Display Calibration

Clean the IDS sensor according to the sensor operating manual

Error Error

Eliminate the error according to chapter 6 W

HAT TO DO IF...

record

Zero point [mV]

Slope [mV/pH]

+++ -15 ... +15 -60.5 ... -58

++ -20 ... +20 -58 ... -57

+ -25 ... +25 -61 ... -60.5

-57 ... -56

- -30 ... +30 -62 ... -61 or

-56 ... -50

< -30 or > 30

... -62 or ... -50

Note

For pH IDS sensors, you can optionally enable a more finely graded calibration evaluation (QSC) (see section 4.6.10).

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Preparatory activities Perform the following preparatory activities when you want to calibrate:

1 Connect the IDS pH sensor to the meter.

The pH measuring window is displayed.

2 Keep the buffer solutions ready.

4.6.5 Calibration interval

The calibration evaluation is displayed as a sensor symbol.

After the QSC function has been enabled the sensor symbol is replaced by the QSC color scale (see section 4.6.10).

After the specified calibration interval has expired, the sensor symbol or the QSC color scale flashes. It is still possible to measure.

Setting the calibration

interval

Note

To ensure the high measuring accuracy of the measuring system, calibrate after the calibration interval has expired.

The calibration interval is set to 7 days (d7) in the factory. You can change the interval (1 ... 999 days):

1 Open the menu for measurement settings with <MENU/

ENTER>.

2 In the Calibration / Calibration interval menu, set the calibration

interval with <S><T>.

3 Confirm the setting with <MENU/ENTER>.

4 Quit the menu with <M>.

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4.6.6 Carrying out an automatic calibration (AutoCal)

Make sure that in the sensor menu, Buffer menu, the buffer set is correctly selected (see section 4.6.3).

Use any one to five buffer solutions of the selected buffer set in ascending or descending order.

Below, calibration with Technical buffers (TEC) is described. When other buffer sets are used, other nominal buffer values are displayed. Apart from that, the procedure is identical.

Note

If single-point calibration was set in the menu, the calibration procedure is automatically finished with the measurement of buffer solution 1 and the calibration record is displayed.

1 In the measured value display, select the measured parameter

pH or mV with <M>.

2 Start the calibration with <CAL>.

The calibration display for the first buffer appears (voltage display).

3 Thoroughly rinse the IDS sensor with deionized water.

4 Immerse the IDS pH sensor in buffer solution 1.

5 For measurements without temperature sensor

(e.g. when using an IDS adapter

Measure the temperature of the buffer manually and enter it with <S><T>.

6 Start the measurement with <MENU/ENTER>.

The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes.

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7 Wait for the end of the measurement with stability control or

accept the calibration value with <MENU/ENTER>. The calibration display for the next buffer appears (voltage display).

8 If necessary, finish the calibration procedure as a single-point

calibration with <M>. The calibration record is displayed.

Note

For single-point calibration, the instrument uses the Nernst slope (-59.2 mV/pH at 25 °C) and determines the zero point of the IDS pH sensor.

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Continuing with two-

point calibration

9 Thoroughly rinse the IDS pH sensor with deionized water.

10 Immerse the IDS pH sensor in buffer solution 2.

11 When measuring without temperature sensor:

Measure the temperature of the buffer manually and enter it with <S><T>.

12 Start the measurement with <MENU/ENTER>.

The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes.

13 Wait for the measurement with stability control to be completed

or terminate the stability control and take over the calibration value with <MENU/ENTER>. The calibration display for the next buffer appears (voltage display).

14 If necessary, finish the calibration procedure as a two-point cal-

ibration with <M>. The calibration record is displayed.

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Continuing with three-

to five-point calibration

15 Thoroughly rinse the IDS pH sensor with deionized water.

16 Immerse the IDS pH sensor in the next buffer solution.

17 When measuring without temperature sensor:

Measure the temperature of the buffer manually and enter it with <S><T>.

18 Start the measurement with <MENU/ENTER>.

The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes.

19 Wait for the measurement with stability control to be completed

or terminate the stability control and take over the calibration value with <MENU/ENTER>. The calibration display for the next buffer appears (voltage display).

20 If necessary, use <M> to finish the calibration.

The calibration record is displayed. or Switch to calibration with the next buffer with <MENU/

ENTER>.

Note

Calibration is automatically completed after the last buffer of a buffer set has been measured. Then the calibration record is displayed.

The calibration line is determined by linear regression.

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4.6.7 Carrying out a manual calibration (ConCal)

Make sure that in the sensor menu, Buffer menu, the ConCal buffer set is correctly selected (see section 4.6.3).

Use any one to five buffer solutions in ascending or descending order.

Note

If single-point calibration was set in the menu, the calibration procedure is automatically finished with the measurement of buffer solution 1 and the calibration record is displayed.

1 In the measured value display, select the measured parameter

pH or mV with <M>.

2 Start the calibration with <CAL>.

The calibration display for the first buffer appears (voltage display).

3 Thoroughly rinse the IDS sensor with deionized water.

4 Immerse the IDS pH sensor in buffer solution 1.

5 For measurements without temperature sensor

(e.g. when using an IDS adapter

Measure the temperature of the buffer manually and enter it with <S><T>.

6 Start the measurement with <MENU/ENTER>.

The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes.

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7 Wait for the measurement with stability control to be completed

or terminate the stability control and take over the calibration value with <MENU/ENTER>. The pH value of the buffer solution is displayed.

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8 Set the nominal buffer value for the measured temperature with

<S><T>.

9 Accept the calibration value with <MENU/ENTER>.

The calibration display for the next buffer appears (voltage display).

10 If necessary, finish the calibration procedure as a single-point

calibration with <M>. The calibration record is displayed.

Note

For single-point calibration, the instrument uses the Nernst slope (-59.2 mV/pH at 25 °C) and determines the zero point of the IDS pH sensor.

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Continuing with two-

point calibration

11 Thoroughly rinse the IDS sensor with deionized water.

12 Immerse the IDS pH sensor in buffer solution 2.

13 When measuring without temperature sensor:

Measure the temperature of the buffer manually and enter it with <S><T>.

14 Start the measurement with <MENU/ENTER>.

The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes.

15 Wait for the measurement with stability control to be completed

or terminate the stability control and take over the calibration value with <MENU/ENTER>. The pH value of the buffer solution is displayed.

16 Set the nominal buffer value for the measured temperature with

<S><T>.

17 Accept the calibration value with <MENU/ENTER>.

The calibration display for the next buffer appears (voltage display).

18 If necessary, finish the calibration procedure as a two-point cal-

ibration with <M>. The calibration record is displayed.

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Continuing with three-

to five-point calibration

19 Thoroughly rinse the IDS pH sensor with deionized water.

20 Immerse the IDS pH sensor in the next buffer solution.

21 When measuring without temperature sensor:

Measure the temperature of the buffer manually and enter it with <S><T>.

22 Start the measurement with <MENU/ENTER>.

The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes.

23 Wait for the measurement with stability control to be completed

or terminate the stability control and take over the calibration value with <MENU/ENTER>. The pH value of the buffer solution is displayed.

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24 Set the nominal buffer value for the measured temperature with

<S><T>.

25 Accept the calibration value with <MENU/ENTER>.

The calibration display for the next buffer appears (voltage display).

26 If necessary, use <M> to finish the calibration.

The calibration record is displayed. or Continue calibrating using the next buffer with <MENU/

ENTER>.

Note

After the fifth buffer has been measured the calibration is automatically finished. Then the calibration record is displayed. The calibration line is determined by linear regression.

Operation Multi 3410

4.6.8 Displaying calibration records

The calibration data can be displayed and then output to the interface.

Displaying the

calibration record

The calibration record of the last calibration is to be found under the menu item, Calibration / Calibration record. To open it in the measured value display, press the <CAL

The calibration records of the last 10 calibrations are to be found in the menu, Calibration / Calibration data storage / Display. To open the Cal- ibration menu, press the <MENU/ENTER> key in the measured value display.

Menu item Setting/

Calibration / Calibration data storage / Display

_> key.

Description

function

- Displays the calibration records.

Further

z Scroll through the calibra-

z Output the displayed cali-

options:

tion records with <W><X>.

bration record to the interface with <PRT>.

Calibration / Calibration data storage / Copy to USB flash drive

Calibration / Calibration data storage / Output to RS232/USB

z Output all calibration

records to the interface with <PRT

z Quit the display with

<ESC> or <MENU/ ENTER>.

z Switch directly to the mea-

sured value display with <M>.

- Outputs the calibration data storage to a connected USB flash drive

- Outputs the calibration data storage to the interface

_>.

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Info

4.6.9 Continuous measurement control (CMC function)

The Continuous Measurement Control (CMC function) facilitates to evaluate the current measured value instantly and definitely.

After each successful calibration the scale of the pH measuring range is displayed in the measured value display. Here you can very clearly see whether or not the current measured value is in the calibrated part of the measuring range.

The following information is displayed:

1 Measuring range for which a valid calibration is available (back-

ground color). Measured values in this range are suitable for documentation.

2 Measuring range for which no valid calibration is available (light

gray). Measured values in this range are not suitable for documentation. Calibrate the meter with buffers covering this measuring range. If the current measured value is not in the calibrated range, the color of this range changes to dark gray. If a measured value is outside the measuring range pH 0 - 14, overflow arrows are displayed at the left or right edge of the measuring range.

3 Currently measured pH value (needle)

4 Marking lines for all nominal buffer values used with the last valid

calibration

The limits of the calibrated range are determined by the buffers used for calibration:

Lower limit: Buffer with lowest pH value - 2 pH units Upper limit: Buffer with highest pH value + 2 pH units

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Info

QSC color scale

The double arrow on the color scale indicates the current sensor evaluation.

4.6.10 QSC function (sensor quality control)

General information

on the QSC function

The QSC function (Quality Sensor Control) is a new sensor evaluation for digital IDS sensors. It evaluates the condition of an IDS pH sensor individually and with a very fine grading.

On the display, the QSC color scale (from green to yellow) indicates the current sensor evaluation by means of a pointer.

In the printout, the sensor evaluation is quoted as a percentage (1-100).

The finely graded sensor evaluation of the QSC function promptly calls your attention to changes of the sensor. Thus you can do what is necessary to restore the optimum measuring quality (e.g. clean, calibrate or replace the sensor).

Sensor evaluation

with / without QSC function

With QSC function Without QSC function (sensor

symbol)

Very fine grading of the sensor evaluation (100 grades)

The reference value is individually determined for each sensor

Rough grading of the sensor evaluation (4 grades)

A theoretical reference value is

used for all sensors during the QSC initial calibration.

Low tolerances for zero point and slope when using QSC buffer solutions

Additional QSC calibration

Greater tolerances for zero point

and slope when using commer-

cial buffer sets

No additional calibration required required (with special QSC buffer set)

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QSC calibration The QSC function is enabled by once carrying out an additional three-

point calibration with special QSC buffer solutions. It covers the measuring range of the sensor from pH 2 to pH 11. The QSC initial calibration determines the actual condition of the sensor and stores it as a reference in the sensor. To meet the high requirements of a QSC initial calibration, the QSC initial calibration should optimally be carried out with the initial commissioning of the sensor.

Carry out the normal calibrations for your special measuring range with your usual standard solutions as previously done.

Note

As soon as the QSC function was enabled for an IDS sensor, it is not possible to return to the sensor evaluation with the sensor symbol for this sensor.

Carrying out a QSC

initial calibration

1 Open the menu for measurement settings with <MENU/

ENTER>.

2 In the QSC menu, select First calibration with <S><T>.

The calibration display appears. AutoCal QSC-Kit is displayed as the buffer. Exclusively use the QSC-Kit for the QSC calibration. If you use other buffers, you will have no valid QSC calibration.

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3 Calibration with the buffers of the QSC-Kit is done like a normal

three-point calibration. Follow the user guide.

Note

Carry out the QSC initial calibration very carefully. It determines the reference value for the sensor. This reference value cannot be overwritten or reset. As soon as the QSC function was enabled, it is not possible to return to the sensor evaluation with the sensor symbol.

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Info

QSC color scale

The double arrow on the color scale indicates the current sensor evaluation.

4 As soon as the three-point calibration has been successfully

carried out you can decide whether to accept or discard the calibration as the QSC initial calibration.

The QSC initial calibration is completed. The sensor is calibrated. If you want to calibrate with special buffers for your measurements, you can subsequently carry out a normal calibration with your buffers. The reference values determined with the QSC calibration are also used for the evaluation of normal calibrations. In the measured value display, the color scale of the QSC function is always displayed. A double arrow on the color scale indicates the current sensor evaluation.

Carrying out a QSC

control calibration

You can carry out QSC control calibrations at greater intervals than normal calibrations. A QSC control calibration can, e.g. be useful if the sensor evaluation noticeably changed (after some normal calibrations).

1 Open the menu for measurement settings with <MENU/

ENTER>.

2In the QSC menu, select Control calibration with <S><T>.

The calibration display appears. AutoCal QSC-Kit is displayed as the buffer. Exclusively use the QSC-Kit for the QSC calibration. If you use other buffers, you will have no valid QSC control calibration.

3 Follow the user guide.

The calibration is carried out like a normal three-point calibration. As soon as the three-point calibration has been successfully carried out you can decide whether to accept or discard the calibration as the QSC control calibration.

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4.7 ORP voltage

4.7.1 General information

You can measure the following parameters:

z ORP [mV]

Note

The sensor connection and the USB-B (device) interface are galvanically isolated. This enables interference-free measurements in grounded measuring media.

Preparatory activities Perform the following preparatory activities when you want to measure:

1 Connect the IDS ORP sensor to the meter.

The ORP measuring window is displayed.

2 Check the meter with the IDS ORP sensor.

4.7.2 Measuring the ORP

Note

IDS ORP sensors are not calibrated. However, you can check IDS ORP sensors using a test solution.

1 Perform the preparatory activities according to section 4.6.1.

2 Immerse the IDS ORP sensor in the test sample.

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3 Select the mV display with <M>.

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Stability control

(AutoRead )

You can start the Stability control manually at any time, irrespective of the setting for automatic Stability control (see section 4.4.3) in the Sys- tem menu.

1 Freeze the measured value with <AR>.

The [HOLD] status indicator is displayed.

2Using <MENU/ENTER>, activate the Stability control function

Criteria for a stable

measured value

Note

3 Release the frozen measured value again with <AR> or <M>.

The [AR] status display disappears. The display switches back to the previous indication.

The Stability control function checks whether the measured values are stable within the monitored time interval.

Measured parameter

ORP voltage 15 seconds

Time interval Stability in the time inter-

val

Δ mV: Better than 0.3

The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer.

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4.7.3 Settings for ORP measurements

Overview The following settings are possible for ORP measurements:

z Resolution

z Automatic stability control

Settings The settings are made in the menu for measuring settings of the ORP

measurement. To open the settings, display the required parameter in the measured value display and press the <MENU/ENTER> key. After completing the settings, switch to the measured value display with <M>. Default settings are printed in bold.

Menu item Possible set-

Description

ting

mV resolution 0.1

Resolution of the mV display

Reset - Resets all sensor settings to

the delivery condition (see section 4.12.1)

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4.8 Dissolved oxygen

4.8.1 General information

You can measure the following parameters:

z D.O. concentration

z D.O. saturation index ("D.O. saturation")

z D.O. partial pressure

Note

The sensor connection and the USB-B (device) interface are galvanically isolated. This enables interference-free measurements in grounded measuring media.

Temperature

measurement

IDS D.O. sensors measure the temperature with a temperature sensor integrated in the IDS sensor.

Preparatory activities Perform the following preparatory activities when you want to measure:

1 Connect the D.O. sensor to the meter.

The D.O. measuring window is displayed.

2 Check or calibrate the meter with the sensor.

Note

The FDO FDO

925 needs to be calibrated in special cases only. Regular

Checks are sufficient.

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4.8.2 Measuring

1 Perform the preparatory activities according to section 4.9.1.

2 Immerse the D.O. sensor in the test sample.

Selecting the

displayed

You can switch between the following displays with <M>:

z D.O. concentration [mg/l]

measured parameter

z D.O. saturation [%]

z D.O. partial pressure [mbar].

Salinity correction When measuring the concentration of solutions with a salt content of

more than 1 g/l, a salinity correction is required. For this, you have to measure and input the salinity of the measured medium first.

When the salinity correction is switched on, the [SAL] indicator is displayed in the measuring window.

Note

You can switch the salinity correction on or off and enter the salinity in the menu for calibration and measurement settings (see section 4.9.4).

Freezing the measured

value (HOLD function)

With the HOLD function, you can freeze the current measured value. The displayed measured value stops changing until you switch the HOLD function off.

1 Freeze the measured value with <AR>.

The [HOLD] status indicator is displayed.

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Note

If the HOLD function is active, you can, e.g. start a manual measurement with stability control.

Operation Multi 3410

2 Release the frozen measured value again with <AR>.

The HOLD function is switched off. The [HOLD] status display disappears.

Stability control

(AutoRead )

You can start a measurement with Stability control manually at any time, irrespective of the setting for automatic Stability control (see section 4.4.3) in the System menu.

1 Freeze the measured value with <AR>.

The [HOLD] status indicator is displayed.

2Using <MENU/ENTER>, activate the Stability control function

Note

3 Using <MENU/ENTER>, start a further measurement with Sta-

bility control. or Release the frozen measured value again with <AR>. The display switches to the measured value display. The [AR][HOLD] status display disappears.

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Criteria for a stable

measured value

The Stability control function checks whether the measured values are stable within the monitored time interval.

Measured

Time interval Stability in the time interval

parameter

D.O. concen-

20 seconds

Δ : better than 0.03 mg/l

tration

D.O. saturation 20 seconds

D.O. partial

20 seconds

Δ : better than 0.4 %

Δ : Better than 0.8 mbar

pressure

The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer.

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4.8.3 Settings for D.O. sensors (menu or measurement and calibration settings)

Overview The following settings are possible for D.O. sensors:

z Calibration record (display)

z Calibration data storage (display)

z Calibration interval

z FDO Check

z Check interval

z Salinity correction

z Salinity (salinity equivalent)

Settings The settings are available in the menu for measurement and calibration

settings. To open the settings, display the required parameter in the measured value display and press the <MENU/ENTER> key. After completing the settings, switch to the measured value display with

<M>.

Menu item Possible

setting

Calibration /Cali-

- Displays the calibration record of the

bration record

Calibration /Cali-

- Displays the last calibration records

bration data storage

Calibration /

- Outputs the calibration data storage to

Calibration data storage / Copy to USB flash drive

Calibration /

- Outputs the calibration data storage to

Calibration data storage / Output to RS232/USB

Calibration /Calibration interval

FDO Check /

1 ... 180 ... 999 d

- Starts the FDO

Start FDO Check

Description

last calibration

(max. 10)

a connected USB flash drive

the interface

Calibration interval for the D.O. sensor (in days).

The meter reminds you to calibrate regularly by the flashing sensor symbol in the measuring window.

Check.

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Menu item Possible

setting

FDO Check / Check interval

1 ... 60 ... 999 d

Sal correction on

off

Salinity 0.0 ...

70.0

Response time

30 ... 300 Response time of the signal filter (in

t90

Description

Interval for the FDO Check (in days).

The FDO Check status display indicator in the measuring window reminds you to check the sensor regularly.

Manual salt content correction for concentration measurements

Salinity or salinity equivalent for the salt content correction.

This function is only available for concentration measurements if the manual salt content correction is switched on.

seconds).

A signal filter in the sensor reduces the fluctuation range of the measured value. The signal filter is characterized by the response time t90. This is the time after which 90 % of a signal change is displayed.

This menu item is only available if sensor and meter support this function. Firmware updates for the IDS sensor and the meter are provided on the internet (see chapter 9).

Reset - Resets all sensor settings to the deliv-

ery condition (see section 4.12.1)

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4.8.4 FDO® Check procedure (check of the FDO® 925)

Why should you check

the sensor?

When should you check

the sensor?

Check procedure Check in water vapor-saturated air.

FDO

Stability control

(AutoRead)

Carrying out the FDO

Check procedure

With the FDO whether the FDO

Check procedure, you can find out in a simple manner

925 D.O. sensor should be cleaned or calibrated.

Checking can be useful in the following cases:

z When the check interval has expired

z If the measured values seem to be implausible

z If you assume that the sensor cap is contaminated or at the end of

its lifetime

z After the sensor cap was exchanged

z Routinely within the scope of company quality assurance measures.

Use the check and storage vessel (FDO

Check) to carry out the FDO®

Check procedure.

The Stability control function (AutoRead) is automatically activated for the FDO

Proceed as follows to carry out the FDO

Check.

Check procedure:

1 Connect the D.O. sensor to the meter.

2 Place the D.O. sensor in the check and storage vessel, FDO

Check.

Note

The sponge in the check and storage vessel must be moist (not wet). Leave the sensor in the check and storage vessel long enough so it can adapt to the ambient temperature.

3 In the measuring menu, start the FDO® Check procedure with

FDO Check / Start FDO Check. The meter switches to the measured parameter, %.

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4 Start the measurement with <MENU/ENTER>.

The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes.

5 Wait for the AutoRead measurement to be completed

([HOLD][AR]) display or accept the measured value with <MENU/ENTER>. The measured value is frozen.

6 Switch to the measured value display with <MENU/ENTER>.

The check measurement is not documented.

Evaluation The evaluation is based on the accuracy required by the user. Together

with the nominal value (100 %), this results in a validity scope for the check.

If the measured value is within the validity scope, no cleaning or user calibration is required.

If the measured value is outside the validity scope, the sensor shaft and membrane should be cleaned, and the check should then be repeated (see section 5.4.1).

Example:

– Required accuracy: ± 2 %.

– In water vapor-saturated air or air-saturated water, the nominal

value for the relative D.O. saturation (abbreviated: saturation) is 100 %.

– Therefore, the validity scope is 98 ... 102 %

– The check resulted in a measured value of 99,3 %

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The measurement error is within the specified validity scope. No cleaning or user calibration is required.

Operation Multi 3410

Multi 3410 Ser. no. 10139695

CALIBRATION Ox Calibration date 30.03.2010 16:13:33 FDO 925 Ser. no. 10146858

SC-FDO 925 10158765 Relative slope 0.98 Sensor +++

4.8.5 D.O. calibration

Why calibrate? D.O. sensors age. This changes the slope of the D.O. sensor. Calibra-

tion determines the current slope of the sensor and stores this value in the instrument.

Note

The FDO

925 D.O. sensor ages so little it does not have to be regularly calibrated. To detect changes of the sensor as early as possible, the FDO procedure can be useful (see section 4.8.4).

When to calibrate? z If your evaluation of the FDO

Check procedure suggests a calibra-

tion

z When the calibration interval has expired

z If your accuracy requirements are especially high

z Routinely within the scope of company quality assurance measures.

Calibration procedures Calibration in water vapor-saturated air.

925 sensor, use the check and storage vessel,

Stability control

(AutoRead)

Display calibration data

and output to interface

To calibrate the FDO

FDO

Check.

In calibration, the Stability control function (AutoRead) is automatically activated.

You can have the data of the last calibration displayed (see section

4.9.6). Subsequently, you can transmit the displayed calibration data to the interface, e. g. to a PC, with the <PRT> key.

Check

Note

The calibration record is automatically transmitted to the interface after calibrating.

Sample record

Calibration evaluation After the calibration, the meter automatically evaluates the current sta-

tus of the calibration. The evaluation appears on the display and in the calibration record.

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Calibration evaluation of

the FDO

925

Calibration in

water vapor-

saturated air

Display Calibration record Relative slope

+++ S = 0.94 ... 1.06

++ S = 0.92 ... 0.94 or

S = 1.06 ... 1.08

+ S = 0.90 ... 0.92 or

S = 1.08 ... 1.10

Error Error

S < 0.90 or

S > 1.10 Eliminate the error according to chapter 6 W

HAT TO DO IF...

Proceed as follows to calibrate the D.O. sensor:

1 Connect the D.O. sensor to the meter.

2 Place the FDO

vessel, FDO

925 D.O. sensor into the check and storage

Check.

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Note

The sponge in the check and storage vessel must be moist (not wet). Leave the sensor in the check and storage vessel long enough so it can adapt to the ambient temperature.

3 Start the calibration with <CAL>.

The last calibration data (relative slope) is displayed.

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4 Start the measurement with <MENU/ENTER>.

The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes.

5 Wait for the AutoRead measurement to be completed

([HOLD][AR]) display or accept the calibration value with <MENU/ENTER>. The calibration record is displayed and output to the interface.

6 Switch to the measured value display with <MENU/ENTER>.

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4.8.6 Displaying calibration records

The calibration data can be displayed and then output to the interface.

Displaying the

calibration record

The calibration record of the last calibration is available under the menu item, Calibration / Calibration record. To open it in the measured value display, press the <CAL

The calibration records of the last 10 calibrations are available in the menu, Calibration / Calibration data storage / Display. To open the Cal- ibration menu, press the <MENU/ENTER value display.

Menu item Setting/

Calibration / Calibration data storage / Display

_> key.

_> key in the measured

Description

function

- Displays the calibration records.

Further

z Scroll through the calibra-

z Output the displayed cali-

options:

tion records with <W><X>.

bration record to the interface with <PRT>.

Calibration / Calibration data storage / Copy to USB flash drive

Calibration / Calibration data storage / Output to RS232/USB

z Output all calibration

records to the interface with <PRT

z Quit the display with

<ESC> or <MENU/ ENTER>.

z Switch directly to the mea-

sured value display with <M>.

- Outputs the calibration data storage to a connected USB flash drive

- Outputs the calibration data storage to the interface

_>.

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4.9 Conductivity

4.9.1 General information

You can measure the following parameters:

z Conductivity

z Specific resistance

z Salinity

z Total dissolved solids (TDS)

Note

The sensor connection and the USB-B (device) interface are galvanically isolated. This enables interference-free measurements in grounded measuring media.

Temperature

measurement

IDS sensors measure the temperature with a temperature sensor integrated in the IDS sensor.

Preparatory activities Perform the following preparatory activities when you want to measure:

1 Connect an IDS conductivity sensor to the meter.

The conductivity measuring window is displayed. The Measuring cell and cell constant for the connected IDS conductivity sensor are automatically taken over.

4.9.2 Measuring

You can carry out conductivity measurements as follows:

1 Perform the preparatory activities according to section 4.9.1.

2 Immerse the IDS conductivity sensor in the test sample.

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Selecting the

displayed

measured parameter

Freezing the measured

value (HOLD function)

You can switch between the following displays with <M>:

z Conductivity [μS/cm] / [mS/cm]

z Resistivity [Ω·cm] / [kΩ·cm] / [MΩ·cm]

z Salinity SaL [ ]

z Total dissolved solids TDS [mg/l] / [g/l]

The factor to calculate the total dissolved solids is set to 1.00 in the factory. You can adjust this factor to meet your requirements in the range of 0.40 to 1.00. The factor is set in the menu for the parameter, TDS.

With the HOLD function, you can freeze the current measured value. The displayed measured value stops changing until you switch the HOLD function off.

1 Freeze the measured value with <AR>.

The [HOLD] status indicator is displayed.

Note

If the HOLD function is active, you can, e.g. start a manual measurement with stability control.

Stability control

(AutoRead )

2 Release the frozen measured value again with <AR>.

The HOLD function is switched off. The [HOLD] status display disappears.

You can start the Stability control function manually at any time, irre- spective of the setting for automatic Stability control (see section 4.4.3) in the System menu.

1 Freeze the measured value with <AR>.

The [HOLD] status indicator is displayed.

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2Using <MENU/ENTER>, activate the Stability control function

Note

Criteria for a stable

measured value

3 Using <MENU/ENTER>, start a further measurement with Sta-

bility control.

or Release the frozen measured value again with <AR>. The display switches to the measured value display. The [AR][HOLD] status display disappears.

The Stability control function checks whether the measured values are stable within the monitored time interval.

Measured

Time interval Stability in the time interval

parameter

Conductivity ϰ 10 seconds

Δ ϰ: better than

0.5% of measured value

Temperature 10 seconds

Δ T (° C): Better than 0.02

The minimum duration until a measured value is assessed as stable is the monitored time interval. The actual duration is mostly longer.

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4.9.3 Temperature compensation

The calculation of the temperature compensation is based on the preset reference temperature, 20 °C or 25 °C. It appears on the display as Tr20 or Tr25.

You can select one of the following temperature compensation methods:

z Nonlinear temperature compensation (nLF) according to EN 27

888

z Linear temperature compensation (lin) with adjustable coeffi-

cients of 0.000 ... 3.000 %

z No temperature compensation (off)

Note

The reference temperature and temperature compensation are set in the menu for the parameter, conductivity (see section 4.9.4).

Application tips Select the following temperature compensations given in the table

according to the respective test sample:

Test sample Temperature compensation Display

indicator

Natural water (ground water, surface

nLF according to EN 27 888

nLF

water, drinking water)

Ultrapure water nLF

nLF

according to EN 27 888

4.9.4 Settings for IDS conductivity sensors

Overview The following settings are possible for IDS conductivity sensors:

z Calibration record (display)

z Calibration data storage (display)

z Calibration interval

z Reference temperature

z Temperature compensation

z TDS factor

z Unit of the temperature

Settings The settings are made in the menu for the measured parameter, con-

ductivity. To open the settings, display the required parameter in the measured value display and press the <MENU/ENTER> key. After completing the settings, switch to the measured value display with <M>. The possible settings are individually displayed for each sensor. Below the setting menu is displayed for two IDS sensors (TetraCon 925, LR325/01). Default settings are printed in bold.

Setting menu of

TetraCon 925

Menu item Possible

setting

Calibration /Cali-

- Displays the calibration record of

bration record

Calibration /Cali-

- Displays the last calibration bration data storage

Calibration /

- Outputs the calibration data sto-

Calibration data storage / Copy to USB flash drive

Calibration /Calibration interval

1 ... 150 ... 999 d

Description

the last calibration

records (max. 10)

rage to a connected USB flash drive

Calibration interval for the IDS conductivity sensor (in days).

The meter reminds you to calibrate regularly by the flashing sensor symbol in the measuring window.

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Menu item Possible

Description

setting

Type Measuring cell used

Cal Measuring cells whose cell con-

stant is determined by calibration in the KCL control standard solution. Calibration range:

0.450 to 0.500 cm

-1

The currently valid cell constant is displayed in the status line.

man Freely adjustable cell constant in

the range 0.450 ... 0.500 cm

Man. cell const. 0.450 ...

0.475 ...

0.500 cm

Temp. comp. (TC) / Method

nLF

lin

The cell constant and be displayed and set here

-1

Procedure for temperature compensation (see section 4.9.3).

off

This setting is only available for the measured parameters, ϰ and

ρ.

-1

Temp. comp. (TC) /

Linear coeff.

0.000 ...

2.000 ...

3.000 %/K

Coefficient of the linear temperature compensation.

This setting is only available when the linear temperature compensation is set.

Temp. comp. (TC) / Reference temp.

20 °C

25 °C

Reference temperature

This setting is only available for the measured parameters, ϰ and

ρ.

TDS factor 0.40 ... 1.00 Factor for TDS value

Reset - Resets all sensor settings to the

delivery condition (see section

4.12.1)

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Setting menu of

LR325/01

Menu item Possible set-

ting

Cell constant 0.090 ... ...

0.100 ...

-1

Temp. comp. (TC) / Method

0.110 cm

nLF

lin

off

Temp. comp. (TC) / Linear coeff.

0.000 ...

2.000 ...

3.000 %/K

Temp. comp. (TC) / Reference temp.

20 °C

25 °C

Description

The cell constant can be displayed and set here

Procedure for temperature compensation (see section

4.9.3).

This setting is only available for the measured parameters, ϰ and

ρ.

Coefficient of the linear temperature compensation.

This setting is only available when the linear temperature compensation is set.

Reference temperature

This setting is only available for the measured parameters, ϰ and

ρ.

TDS factor 0.40 ... 1.00 Factor for TDS value

Reset - Resets all sensor settings to

the delivery condition (see section 4.12.1)

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Multi 3410 Ser. no. 09250023

CALIBRATION Cond Calibration date 31.07.2009 16:13:33 TetraCon 925 Ser. no. 09250033

Cell constant 0.476 1/cm 25.0 °C Sensor +++

4.9.5 Determining the cell constant (calibration in control standard)

Why determine the cell

constant?

Procedure You can determine the actual cell constant of the IDS conductivity sen-

Stability control

(AutoRead)

Display calibration data

and output to interface

Aging slightly changes the cell constant, e. g. due to coatings. As a result, an inexact measured value is displayed. The original characteristics of the cell can often be restored by cleaning the cell. Calibration determines the current value of the cell constant and stores this value in the meter. Thus, you should calibrate at regular intervals (we recommend: every 6 months).

sor cell by calibrating with the control standard in the following range:

z 0.450 ... 0.500 cm

-1

(e.g. TetraCon 925, nominal cell constant 0.475)

The cell constant is determined in the control standard, 0.01 mol/l KCl.

In the delivery condition, the calibrated cell constant of the IDS sensor is set to 0.475 cm

-1

(conductivity measuring cell, TetraCon 925).

In calibration, the Stability control function (AutoRead) is automatically activated.

You can have the data of the last calibration displayed (see section

4.9.6). Subsequently, you can transmit the displayed calibration data to

the interface, e. g. to a PC, with the <PRT> key.

Calibration evaluation After calibration, the meter automatically evaluates the current status of

Sample record

Note

The calibration record is automatically transmitted to the interface after calibrating.

the calibration. The evaluation appears on the display and in the calibration record.

Display Calibration

Cell constant [cm-1]

record

+++ Within the range

0.450 ... 0.500 cm

-1

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22.09.2009 08:00

-1

Display Calibration

Cell constant [cm

]

record

Determining the cell

constant

Error Error

Outside the range

0.450 ... 0.500 cm

-1

Eliminate the error according to chapter 6 W

HAT TO DO IF...

For this calibration procedure, the Type setting must be set to cal . Proceed as follows to determine the cell constant:

1 Connect an IDS conductivity sensor to the meter.

2 In the measured value display, select the conductivity parame-

ter with <M>.

3 Start the calibration with <CAL>.

The cell constant that was calibrated last is displayed.

4 Immerse the IDS conductivity sensor in the control standard

solution, 0.01 mol/l KCI.

5 Start the measurement with <MENU/ENTER>.

The measured value is checked for stability (stability control). The [AR] status indicator is displayed. The measured parameter flashes.

6 Wait for the measurement with stability control to be completed

([HOLD][AR]) display or accept the calibration value with <MENU/ENTER>. The calibration record is displayed and output to the interface.

7 Switch to the measured value display with <MENU/ENTER>.

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4.9.6 Displaying calibration records

The calibration data can be displayed and then output to the interface.

Displaying the

calibration record

The calibration record of the last calibration is to be found under the menu item, Calibration / Calibration record. To open it in the measured value display, press the <CAL

Menu item Setting/

Calibration / Calibration data storage / Display

_> key.

Description

function

- Displays the calibration records.

Further

z Scroll through the calibra-

z Output the displayed cali-

z Output all calibration

options:

tion records with <W><X>.

bration record to the interface with <PRT>.

records to the interface with

<PRT

_>.

Calibration / Calibration data storage / Copy to USB flash drive

Calibration / Calibration data storage / Output to RS232/USB

z Quit the display with

<ESC> or <MENU/ ENTER>.

z Switch directly to the mea-

sured value display with <M>.

- Outputs the calibration data storage to a connected USB flash drive

- Outputs the calibration data storage to the interface

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4.10 Data storage

You can transmit measured values (datasets) to the data storage:

z Manual storage (see section 4.10.1)

z Automatic storage at intervals (see section 4.10.2)

Each storage process transmits the current dataset to the interface at the same time.

Measurement dataset A complete dataset consists of:

z Date/time

z Meter name, series number

z Sensor name, series number

z ID number

z Measured value of the connected sensor

z Measured temperature value of the connected sensor

z AutoRead info: AR appears with the measured value if the Auto-

Read criterion was met while storing (stable measured value). Otherwise, the AR display is missing.

z Calibration evaluation:

- 4 levels (+++, ++, +, -, or no evaluation) or

- QSC (percentage)

Storage locations The Multi 3410 meter has two measurement data memories. The mea-

sured values recorded either manually or automatic are stored separately in individual measurement data memories.

Storage Maximum number of datasets

Manual data storage 500

Automatic data storage 10000

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30.09.2009 11:24:16

pH 7.000 24.8 °C AR +++

ID number: 1 Continue

Manual data storage 4 From 500

22.09.2009 08:00

4.10.1 Manual storage

You can transmit a measurement dataset to the data storage as follows. The dataset is at the same time output to the interface:

1 Press the <STO> key shortly.

The menu for manual storage appears.

2 If necessary, change and confirm the ID number (1 ... 10000)

with <S><T> and <MENU/ENTER>. The dataset is stored. The meter switches to the measured value display.

If the storage is full When all storage locations are occupied, it is not possible to continue

storing. Then you can e.g. transmit the stored data to a PC or a USB flash drive (see section 4.10.3) and subsequently erase the storage (see section 4.10.4).

4.10.2 Automatic storage at intervals

The storage interval (Interval) determines the time interval between automatic storage processes. Each storage process transmits the current dataset to the interface at the same time.

Configuring the

automatic storage

function

1 Press the <STO_> key.

The menu for automatic storage appears.

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ID number 1 Interval 30 s Duration 180 min Continue

0d03h00min

0 1d17h33min

Automatic data storage

22.09.2009 08:00

Set entire storing duration

Max. available storing duration

Graphical display of the storage usage

Settings You can configure the automatic storage function with the following set-

tings:

Starting the automatic

storage function

Menu item Possible

Description

setting

ID number 1 ... 10000 ID number for the dataset series

Interval 1 s, 5 s, 10 s,

Storage interval.

30 s, 1 min, 5min, 10 min, 15 min, 30 min, 60 min

Duration 1min ... x

min

The lower limit of the storage interval can be restricted by the number of free storage locations. The upper limit is restricted by the storage duration.

Storage duration. Specifies after which time the automatic storage should be terminated.

The lower limit of the storage duration is restricted by the storage interval. The upper limit is restricted by the number of free storage locations.

To start the automatic storage function, select continue with <S><T> and confirm with <MENU/ENTER>. The meter switches to the measured value display.

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30.09.2009 08:00

0d03h00min

Remaining storing duration

Graphical display of the storing duration

Stop automatic storage?

Yes No

Warning

22.09.2009 08:00

The active automatic storage function can be recognized by the progress bar in the status line. The progress bar indicates the remaining storing duration.

Note

If the automatic storage function is activated, only the following keys are active: <M>, <STO

_> and <On/Off>. The other keys and the

automatic switch-off function are deactivated.

Terminating the

automatic storage

function prematurely

Proceed as follows to switch off the automatic storage function before the adjusted storage duration has expired:

1 Press the <STO_> key.

The following window appears.

2 Using <S><T>, select yes and confirm with <MENU/

ENTER>. The meter switches to the measured value display. The automatic storage function is terminated.

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4.10.3 Editing the measurement data storage

The contents of the manual or automatic measurement data storage can be shown on the display.

Each of the measurement data storages has a function to erase the entire contents.

Editing the data storage The storage is edited in the menu, Storage & config / Data storage. To

open the Storage & config menu, press the <MENU/ENTER the measured value display.

Open the manual or automatic storage directly with the <RCL> or

<RCL

_> key.

Note

The settings are explained here using the manual storage as an example. The same settings and functions are available for the automatic storage.

_> key in

Settings

Menu item Setting/

function

Data storage / Manual data storage / Display

Data storage / Manual data storage / Copy to USB flash drive

Data storage / Manual data storage / Output to RS232/USB

- Displays all measurement

- Outputs all stored measure-

Description

datasets page by page.

Further options: z Scroll through the data-

sets with <W><X>.

z Output the displayed

dataset to the interface with <PRT>.

z Quit the display with

<ESC>.

ment data to a connected USB flash drive

ment data to the interface

Data storage / Manual data storage / Erase

- Erases the entire manual

measurement data storage.

Note: All calibration data remains stored when this action is performed.

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Manual data storage (500) 3 of 64

30.09.2009 11:24:16 ID number: 1

SenTix 940 B20234008565 pH 7.000 24.8 °C AR Sensor:

+++

22.09.2009 08:00

31.07.2009 09:56:20 Multi 3410 Ser. no. 09250023

SenTix 940 Ser. no. B092500013 ID number 2 pH 6.012 24.8 °C, AR, Sensor: +++ ________________________________________

31.07.2009 10:56:20 Multi 3410 Ser. no. 09250013

SenTix 940 Ser. no. B092500013 ID number 2 pH 6.012 24.8 °C, AR, Sensor: +++ ________________________________________

etc...

Display presentation

of a dataset

Sample printout

Quitting the display To quit the display of stored measurement datasets, you have the fol-

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lowing options:

z Switch directly to the measured value display with <M>.

z Quit the display and move to the next higher menu level with

<ESC>.

4.10.4 Erasing the measurement data storage

How to erase the measurement data memory is described in section

4.10.3 E

DITING THE MEASUREMENT DATA STORAGE.

Operation Multi 3410

4.11 Transmitting data (USB interfaces)

4.11.1 Outputting current measurement data

1 Output the current measurement data to the USB-B interface

with <PRT>.

4.11.2 Transmitting data (to a PC)

The meter has the following interfaces:

z USB-B interface (USB Device)

e.g. to connect a PC

z USB-A interface (USB Host),

e.g. to connect a USB flash drive

Via the USB-B interface (USB Device) you can transmit data to a PC or printer and update the meter software.

Installation of the USB

driver on the PC

Via the USB-A interface (USB Host) it is possible to transfer data to an external USB memory device.

4.11.3 Connecting the PC / USB-B interface (USB Device)

Connect the Multi 3410 to the PC via the USB-B interface.

System requirements of the PC for installation of the USB driver:

z PC with at least one free USB connection and CD-ROM drive

z Windows 2000, Windows XP, Windows Vista or Windows 7.

1 Insert the supplied installation CD in the CD drive of your PC.

2 Install the driver from the CD.

Follow the Windows installation instructions as necessary.

3 Connect the Multi 3410 to the PC via the USB-B interface.

The meter is listed as a virtual COM interface among the connections in the Windows instrument manager.

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4 Set the same transmission data at the connected instrument

(PC):

z Baud rate: to be selected in the range 1200 ... 19200

z Handshake: RTS/CTS

z Set at the PC only:

– Parity: none

– Data bits: 8

– Stop bits: 1

4.11.4 Options for data transmission to a PC (USB-B interface)

Via the USB-B interface you can transmit data to a PC. The following table shows which data are transmitted to the interface in which way:

Data Control Operation / description

Current measured values of all connected sensors

Manual z With <PRT>

z Simultaneously with every

manual storage process (see section 4.10.1)

Automatic, at intervals

z With <PRT

Then you can set the transmission interval

_>.

z Simultaneously with every

automatic storage process (see section 4.10.2)

Stored measured values

calibration records

Note

The following rule applies: With the exception of the menus, shortly pressing the <PRT> key generally outputs the display contents to the interface (displayed measured values, measuring datasets, calibration records).

Manual z Displayed dataset with

<PRT> after calling up from the storage

z All datasets with the Output

to RS232/USB function

For details, see section 4.10.3.

Manual z Displayed calibration record

with <PRT>

z All calibration records with

<PRT

For details, see section 4.11.

Automatic z At the end of a calibration

procedure

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4.11.5 Connecting the USB memory device / USB-A interface (USB Host)

Connect the USB-A interface (USB Host) of the Multi 3410 to a USB flash drive.

1 Connect a USB flash drive to the USB Host interface.

4.11.6 Data transmission to a USB memory device (USB-A interface)

Via the USB-A interface you can transmit data to a USB memory device. The following table shows which data are transmitted to the interface in which way:

Data Control Operation / description

Stored measured values

Manual All datasets with the Output to

RS232/USB function.

For details, see section 4.10.3. Calibration data storage

Manual All stored calibration records of

a sensor with the Copy to USB

flash drive function.

For details, see the menu for

calibration and measurement

settings of the sensor.

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4.12 Reset

You can reset (initialize) all sensor settings and sensor-independent settings separately from each other.

4.12.1 Resetting the measurement settings

Note

The calibration data are reset to the default settings together with the measuring parameters. Recalibrate after performing a reset.

pH The following settings for pH measurements are reset to the default

settings with the Reset function:

Setting Default settings

Buffer AutoCalTEC

Cal. interval 7 d

Unit for slope mV/pH

Measured parameter pH

pH resolution 0.001

mV resolution 0.1

Asymmetry 0 mV

Slope -59.2 mV

Man. temperature 25 °C

Single-point calibration Off

The sensor settings are reset under the Reset menu item in the menu for calibration and measurement settings. To open the settings, display the required parameter in the measured value display and press the

<MENU/ENTER> key.

ORP The following settings for ORP measurements are reset to the default

settings with the Reset function:

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Setting Default settings

mV resolution 0.1

Man. temperature 25 °C

The sensor settings are reset under the Reset menu item in the menu for calibration and measurement settings. To open the settings, display

Operation Multi 3410

the required parameter in the measured value display and press the

<MENU/ENTER> key.

Dissolved oxygen The following settings for D.O. measurements are reset to the default

settings with the Reset function:

Setting Default settings

Cal. interval 180d

Check interval 60 d

Measured parameter D.O. concentration

Relative slope (S

)1.00

Rel

Salinity (value) 0.0

Salinity (function) Off

<MENU/ENTER> key.

Conductivity The following settings for conductivity measurements are reset to the

default settings with the Reset function:

Setting Default settings

Cal. interval 150 d

Measured parameter

Cell constant (c) Depending on the connected

measuring cell:

-1

0.475 cm

0.100 cm

(calibrated)

-1

(set up)

-1

Temperature compensation nLF

Reference temperature 25 °C

Temperature coefficient (TC) of the

2.000 %/K

linear temperature compensation

TDS factor 1,00

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4.12.2 Resetting the system settings

The following system settings can be reset to the default condition:

Setting Default settings

Language English

Acoustic signal On

Volume 6

Baud rate 4800 Baud

Output format ASCII

Decimal separator .

Brightness 15

Illumination Auto

Switchoff time 1 h

Temperature unit °C

USB Host On

Stability control On

The system settings are reset in the menu, Storage & config / System / Reset. To open the Storage & config menu, press the <MENU/

ENTER

_> key in the measured value display.

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100

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Xylem Multi-3410 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1Overview

1.1 Keypad

1.2 Display

1.3 Socket field

1.4 Automatic sensor recognition

1.5 IDS sensors

1.6 IDS adapter for analog sensors

2 Safety

2.1 Authorized use

2.2 General safety instructions

3 Commissioning

3.1 Scope of delivery

3.2 Power supply

3.3 Initial commissioning

3.3.1 Inserting the rechargeable batteries

3.3.2 Connecting the power pack / charging the batteries

3.3.3 Switching on the meter

3.3.4 Setting the date and time

4 Operation

4.1 Switching on the meter

4.2 Login with a user name

4.3 General operating principles

4.3.1 Operating modes

4.3.2 Navigation

4.3.3 Example 1 on navigation: Setting the language

4.3.4 Example 2 on navigation: Setting the date and time

4.4 Sensor-independent settings

4.4.1 System

4.4.2 Data storage

4.4.3 Automatic Stability control

4.4.4 Automatic switch-off

4.4.5 Display illumination

4.5 Sensor info

4.6 pH value

4.6.1 General information

4.6.2 Measuring the pH value

4.6.3 Settings for pH measurements

4.6.4 pH calibration

4.6.5 Calibration interval

4.6.6 Carrying out an automatic calibration (AutoCal)

4.6.7 Carrying out a manual calibration (ConCal)

4.6.8 Displaying calibration records

4.6.9 Continuous measurement control (CMC function)

4.6.10 QSC function (sensor quality control)

4.7 ORP voltage

4.7.1 General information

4.7.2 Measuring the ORP

4.7.3 Settings for ORP measurements

4.8 Dissolved oxygen

4.8.1 General information

4.8.2 Measuring

4.8.3 Settings for D.O. sensors (menu or measurement and calibration settings)

4.8.4 FDO® Check procedure (check of the FDO® 925)

4.8.5 D.O. calibration

4.8.6 Displaying calibration records

4.9 Conductivity

4.9.1 General information

4.9.2 Measuring

4.9.3 Temperature compensation

4.9.4 Settings for IDS conductivity sensors

4.9.5 Determining the cell constant (calibration in control standard)

4.9.6 Displaying calibration records

4.10 Data storage

4.10.1 Manual storage

4.10.2 Automatic storage at intervals

4.10.3 Editing the measurement data storage

4.10.4 Erasing the measurement data storage

4.11 Transmitting data (USB interfaces)

4.11.1 Outputting current measurement data

4.11.2 Transmitting data (to a PC)

4.11.3 Connecting the PC / USB-B interface (USB Device)

4.11.4 Options for data transmission to a PC (USB-B interface)

4.11.5 Connecting the USB memory device / USB-A interface (USB Host)

4.11.6 Data transmission to a USB memory device (USB-A interface)

4.12 Reset

4.12.1 Resetting the measurement settings