Xylem Lab 860 User Manual

Operating manual

Lab 860

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Laboratory pH meter

Lab 860

Accuracy when going to

press

Warranty We guarantee the instrument described for 3 years from the date of

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

purchase. The instrument warranty covers manufacturing faults that are discovered within the warranty period. The warranty does not cover components that are replaced during maintenance work, e. g. batteries.

The warranty claim extends to restoring the instrument to readiness for use but not, however, to any further claim for damages. Improper handling or unauthorized opening of the instrument invalidates any warranty claim.

To ascertain the warranty liability, return the instrument and proof of purchase together with the date of purchase freight paid or prepaid.

Reprinting - even in the form of excerpts - is only allowed with the explicit written authorization of SI Analytics GmbH. Printed in Germany.

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Lab 860

KONFORMITÄTSERKLÄRUNG DECLARATION OF CONFORMITY DÉCLARATION DE CONFORMITÉ

Wir erklären in alleiniger

Verantwortung, dass das

Produkt

pH-Meter

Lab 860

auf das sich diese Erklärung

bezieht, übereinstimmt mit

den Angaben im Kapitel

We declare under our sole

responsibility that the

product

pH meter

Lab 860

to which this declaration

relates is in conformity with

the specifications in the

chapter

Nous déclarons sous notre seule responsabilité que le

produit

pH-mètre

Lab 860

auquel se réfère cette

déclaration est conforme aux

indications du chapitre

30. Oktober, October 30, 30 octobre 2009 AGQSF 0000-A101-01/091030

SI Analytics GmbH

Hattenbergstr. 10

D-55122 Mainz

Deutschland, Germany, Allemagne

Technische Daten

pH-Meter

Lab 860

30. Oktober 2009

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Lab 860

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Lab 860 Contents

Lab 860 - Contents

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

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

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

1.3 Socket field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 12

3 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.1 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.2 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.1 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.2 General operating principles . . . . . . . . . . . . . . . . . . . . . . 18

4.2.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . 18

4.2.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.3 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.3.1 Measuring the pH value . . . . . . . . . . . . . . . . . . . 20

4.3.2 Measuring the ORP . . . . . . . . . . . . . . . . . . . . . . 21

4.4 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.4.1 Calibration interval (Int.C) . . . . . . . . . . . . . . . . . 27

4.4.2 Automatic calibration (AutoCal) . . . . . . . . . . . . . 28

4.5 Saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.5.1 Manual storage . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.5.2 Automatic storage at intervals (AutoStore) . . . . 33

4.5.3 Downloading the data memory . . . . . . . . . . . . . 35

4.5.4 Erasing the data memory . . . . . . . . . . . . . . . . . . 36

4.5.5 Downloading calibration data . . . . . . . . . . . . . . . 36

4.6 Transmitting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

4.6.1 Options for data transmission . . . . . . . . . . . . . . 39

4.6.2 Automatically downloading measurement

datasets at intervals . . . . . . . . . . . . . . . . . . . . . . 40

4.6.3 Downloading stored measurement datasets . . . 40

4.6.4 Downloading calibration data . . . . . . . . . . . . . . . 40

4.6.5 RS232 interface . . . . . . . . . . . . . . . . . . . . . . . . . 40

4.6.6 USB interface (device) . . . . . . . . . . . . . . . . . . . . 41

4.6.7 Operation with MultiLab pilot . . . . . . . . . . . . . . . 41

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Contents Lab 860

4.7 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.7.1 System settings . . . . . . . . . . . . . . . . . . . . . . . . . 44

4.7.2 Measurement settings . . . . . . . . . . . . . . . . . . . . 46

4.7.3 Interval for automatic data transmission . . . . . . . 50

4.8 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

4.8.1 Resetting calibration values . . . . . . . . . . . . . . . . 51

4.8.2 Resetting all meter settings . . . . . . . . . . . . . . . . 52

5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 53

5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.1.1 Replacing the batteries. . . . . . . . . . . . . . . . . . . . 53

5.2 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.3 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

7.1 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

7.2 Measuring ranges, resolution, accuracy . . . . . . . . . . . . . 61

8 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

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Lab 860 Overview

1Overview

The compact Lab 860 precision pH meter enables you to perform pH measurements rapidly and reliably. The Lab 860 provides the maximum degree of operating comfort, reliability and measuring certainty for all applications. The proven calibration procedures and special stability control function (SC) support your work with the pH meter.

1 Keypad

2 Display

3 Socket field

Note

The meter is also available as part of individual Sets of equipment. You will find information on this and other accessories in the SI Analytics GmbH laboratory catalog or via the Internet.

Note

If you need further information or application notes, you can obtain the following material from SI Analytics GmbH:

z Application reports

z pH primers

z Safety datasheets.

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Overview Lab 860

STO

RCL

MODE SC

CAL

MODE

CAL

STO

RCL

1.1 Keypad

In this operating manual, keys are indicated by brackets <..> . The key symbol (e.g. <OK>) indicates a keystroke in this operating manual.

<On/Off>: <On/Off

<MODE>: <MODE

<CAL>: <CAL

<SC>: <SC

<STO>: <STO

<RCL>: <RCL

<▲>: Increment values, scroll

_>:

Switch meter on / off Reset calibration values

Select measured parameter Open setting menu for calibration and measurement

Call up calibration procedure Display calibration data

Activate / deactivate stability control Set interval for data transmission

Store measured value Set interval for automatic storage in memory

Display / transmit measured values and calibration records Erase stored measured values

<▼>: Decrement values, scroll

<OK>:

_>:

<OK

Confirm entries Open setting menu for system settings

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Lab 860 Overview

°F

U pH

LoBat

Auto

Store

CalError

Time

Day.Month

Year

Baud

No.

Ident

mV/pH

RCL

SET

BUFFER

AutoCal

Status display indicator

CalClock (calibration interval and sensor evaluation)

Measured value display

Temperature display and further function indicators

1.2 Display

Function display

indicators

[SET] During calibration: number of the buffer set

[BUFFER] During calibration: number of the buffer

[AutoCal] Calibration with automatic buffer recognition

[Auto][Store] Automatic storing is switched on

[CalError] An error occurred during calibration

[LoBat] With battery operation: batteries almost empty

[SC] Stability control is active

[RCL] Memory display / memory download

[TP] Temperature measurement active

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Overview Lab 860

1.3 Socket field

Connectors:

1 pH electrode

2 Reference electrode

3 Temperature sensor

4 USB interface

5 Power pack

6 RS 232 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). Almost all sensors - in particular SI Analytics GmbH sensors fulfill these conditions.

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Lab 860 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 instrument.

Target group The meter was developed for work 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

warning 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 instrument or the environment.

Note

indicates notes that draw your attention to special features.

Note

indicates cross-references to other documents, e.g. operating manuals.

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Safety Lab 860

2.1 Authorized use

This meter is authorized exclusively for pH and ORP measurements in the laboratory. The technical specifications as given in chapter 7 T

ECHNICAL DATA

(page 59) 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 instrument 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 (page 59).

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

CAUTION

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

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Lab 860 Safety

Safe operation If safe operation is no longer possible, the instrument 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 instrument.

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.

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Safety Lab 860

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Lab 860 Commissioning

3 Commissioning

3.1 Scope of delivery

z Lab 860 laboratory meter

z Power pack

z 4 batteries 1.5 V Mignon type AA

z USB cable with A plug and B plug

z Transparent cover

z Operating manual

z CD-ROM with USB driver

3.2 Initial commissioning

Perform the following activities:

Insert batteries

z Insert batteries

z Switch on the meter

z Set the date and time

z Connect the power pack (for line power operation only).

1 Open the battery compartment (1) on the underside of the

meter.

2 Place four batteries (type Mignon AA) in the battery

compartment.

3 Close the battery compartment (1).

The date (day) flashes in the display.

4 Set the date and time according to page 44.

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Commissioning Lab 860

CAUTION

Make sure that the poles of the batteries are the right way round. The

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

battery compartment. Only use leakproof alkaline manganese batteries.

Switching on the meter

Setting the date and

time

Connecting the power

pack

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

A display test is briefly displayed.

2 See page 44.

You can either operate the measuring instrument with batteries or with the plug-in power supply. The plug-in power supply supplies the measuring instrument with low voltage (12 VDC). This saves the batteries.

CAUTION

The line voltage at the operating site must lie within the input voltage range of the original power pack (see page 59).

CAUTION

Use original power packs only (see page 59).

3 Insert the plug into the socket of the pH meter.

4 Connect the original power pack to an easily accessible power

outlet.

Note

You can carry out measurements without the power pack.

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Lab 860 Operation

4 Operation

4.1 Switching on the meter

1 Place the meter on a flat surface and protect it from intense

light and heat.

2 Press the <On/Off>

A display test is briefly displayed. Subsequently, the meter switches to the measuring mode (measured value display).

Note

The meter has an energy saving feature to avoid unnecessary battery depletion during battery operation. The energy saving feature switches off the meter if no key was pressed during the specified interval (setting the switch-off interval, see page 44). The energy saving feature is not active:

z if the meter is supplied via the power pack or the USB interface

z if a PC is connected (with communication cable to RS232 interface)

z if the printer cable is connected (for external printers).

key.

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Operation Lab 860

4.2 General operating principles

This section contains basic information on the operation of the Lab 860.

4.2.1 Operating modes

The instrument has the following operating modes:

z Measurement

The display indicates the measurement data in the measured value display

z Calibration

The display guides you thru a calibration procedure with calibration information

z Storage

The meter stores measuring data automatically or manually

z Transmitting data

The meter transmits measuring data and calibration records to a serial interface automatically or manually.

z Configuration

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

4.2.2 Operation

Keys The meter is operated via keys. The keys can have different functions

with long or short keystrokes.

Functions Generally, with a short keystroke a function is carried out. A long

keystroke opens a setting menu.

In a setting menu, settings are selected with the <▲><▼> keys. A setting is confirmed with <OK>. With confirming, the setting is finished and the next setting is displayed.

Representation In this operating manual, keys are indicated by brackets <..> .

The key symbol (e.g. <OK>) 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 (e.g.

<OK

_>).

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Lab 860 Operation

4.3 Measuring

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

1 Connect an electrode to the meter.

2 Adjust the temperature of the buffer solutions or test solutions,

or measure the current temperature, if you measure without a temperature sensor.

3 Calibrate or check the meter with the electrode.

4 Select the measured parameter with <MODE>.

Note

Incorrect calibration of pH electrodes leads to incorrect measured values. Calibrate regularly before measuring.

CAUTION

When connecting an earthed PC/printer, measurements cannot be performed in earthed media as incorrect values would result. The RS232 and USB interfaces are not galvanically isolated.

Temperature sensor You can measure with or without a temperature sensor. If a

temperature sensor is connected, it is indicated on the display by TP.

Note

The pH meter automatically recognizes the type of the temperature sensor used. Therefore, you can connect electrodes with an NTC30 or Pt1000.

The temperature measurement is absolutely essential for a reproducible pH measurement. If the measurement is made without a temperature sensor, proceed as follows:

1 Measure the current temperature using a thermometer.

2 Set the temperature value with <▲><▼>.

Note

When calibrating without temperature sensor, also set the current temperature of each buffer solution manually (see <▲><▼>).

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Operation Lab 860

4.3.1 Measuring the pH value

1 Perform the preparatory activities according to page 19.

2 Immerse the pH electrode in the test sample.

3 Using <MODE>, scroll as necessary until the measured

parameter pH is displayed.

Stability control SC

(drift control)

The stability control function (drift control) checks the stability of the measurement signal. The stability has a considerable effect on the reproducibility of the measured value.

For identical measurement conditions, the following criteria apply:

Drift within 15 sec < 0.02 pH units.

1 If necessary, call up the measured variable pH with <MODE>.

2With <SC>, activate the stability control function.

The SC function display indicator appears. The current measured value is frozen (hold function).

3 Start measurement with stability control with <OK>.

SC flashes until a stable measured value is reached. This measured value is downloaded to the interface.

4 If necessary, start the next measurement with stability control

with <OK>.

5 To terminate the stability control function: Press the <MODE>

or <SC>

key.

Note

The current measurement with stability control can be terminated at any time (accepting the current value) by pressing <OK>.

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Lab 860 Operation

4.3.2 Measuring the ORP

The meter can, in conjunction with an ORP electrode, measure the ORP (mV) of a solution.

1 Perform the preparatory activities according to page 19.

2 Immerse the ORP electrode in the test sample.

3 If necessary, call up the measured parameter U with <MODE>.

4 Wait for a stable measured value.

Note

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

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Operation Lab 860

4.4 Calibration

Why calibrate? pH electrodes age. This changes the zero point (asymmetry) and slope

of the pH electrode. As a result, an inexact measured value is displayed. Calibration determines the current values of the zero point and slope of the electrode and stores them. Thus, you should calibrate at regular intervals. The calibration data is stored in the meter.

When do you have to

calibrate?

Buffer sets for

calibration

z After connecting another electrode

z If the CalClock has expired and flashes

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 account during calibration.

No. Buffer set* pH values at

1 SI Analytics GmbH DIN buffers

according to DIN 19266/NBS

1.679

4.006

25 °C

6.865

9.180

12.454

2 SI Analytics GmbH Technical

buffers according to DIN 19267

2.000

4.010

25 °C

7.000

10.011

3 Merck1* 4.000

20°C

7.000

9.000

4 Merck2 * 1.000

6.000

8.000

13.000

5 Merck3 * 4.660

6.880

9.220

6 DIN 19267 * 1.090

4.650

6.790

9.230

7 Mettler Toledo USA * 1.679

4.003

7.002

10.013

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20°C

25 °C

Lab 860 Operation

No. Buffer set* pH values at

8 Mettler Toledo TEC * 1.995

4.005

7.002

9.208

9 Fisher * 2.007

4.002

7.004

10.002

10 Fluka BS * 4.006

6.984

8.957

11 Radiometer * 1.678

4.005

7.000

9.180

12 Baker * 4.006

6.991

10.008

13 Metrohm * 3.996

7.003

8.999

25 °C

14 Beckman * 4.005

25 °C

7.005

10.013

15 Hamilton Duracal * 4.005

25 °C

7.002

10.013

16 Precisa * 3.996

25 °C

7.003

8.999

* Brand names or trade names are trademarks of their respective

owners protected by law (see page 67).

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