Xylem Lab 860 User Manual

5 (1)

Operating manual

Lab 860

6

 

 

pH

9

 

 

 

9

 

2

 

2

4

 

 

 

8°C

TP

Lab

860

 

Laboratory pH meter

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Lab 860

Accuracy when going to The use of advanced technology and the high quality standard of our press 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.

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

Copyright © 2010, SI Analytics GmbH

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

We declare under our sole

Nous déclarons sous notre

Verantwortung, dass das

responsibility that the

seule responsabilité que le

Produkt

product

produit

pH-Meter

pH meter

pH-mètre

Lab 860

Lab 860

Lab 860

auf das sich diese Erklärung

to which this declaration

auquel se réfère cette

bezieht, übereinstimmt mit

relates is in conformity with

déclaration est conforme aux

den Angaben im Kapitel

the specifications in the

indications du chapitre

 

chapter

 

Technische Daten

pH-Meter Lab 860

30. Oktober 2009

SI Analytics GmbH

Hattenbergstr. 10

D-55122 Mainz

Deutschland, Germany, Allemagne

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

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Lab 860

4

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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

4.5.2Automatic 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

4.6.2Automatically 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

6

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Overview

 

 

1 Overview

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.

6

 

 

 

 

pH

9

 

 

 

2

 

9

 

 

 

 

2

4

 

 

 

 

 

8

 

TP

 

 

 

°C

Lab 860

3

2

1

1Keypad

2Display

3Socket 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:

zApplication reports

zpH primers

zSafety datasheets.

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Overview

Lab 860

 

 

1.1Keypad

MODE

CAL

SC

STO RCL

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

The key symbol (e.g. <OK>) indicates a keystroke in this operating manual.

 

 

<On/Off>:

Switch meter on / off

 

 

<On/Off_>:

Reset calibration values

 

 

<MODE>:

Select measured parameter

 

MODE

<MODE_>:

Open setting menu for calibration and

 

 

 

measurement

 

 

 

 

 

 

 

<CAL>:

Call up calibration procedure

 

CAL

<CAL_>:

Display calibration data

 

 

 

 

 

 

 

<SC>:

Activate / deactivate stability control

 

SC

<SC_>:

Set interval for data transmission

 

 

 

 

 

 

 

<STO>:

Store measured value

 

STO

<STO_>:

Set interval for automatic storage in

 

 

 

memory

 

 

 

 

 

 

 

<RCL>:

Display / transmit measured values and

 

RCL

<RCL_>:

calibration records

 

 

 

Erase stored measured values

 

 

 

 

 

 

 

<▲>:

Increment values, scroll

 

 

 

 

 

 

 

<▼>:

Decrement values, scroll

 

 

 

 

 

 

 

<OK>:

Confirm entries

 

 

<OK_>:

Open setting menu for system settings

 

 

 

 

 

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Overview

 

 

1.2Display

SET

U pH

BUFFER

 

 

 

 

%

1 888 8mV/pH

Time

Baud

 

°F

 

Day.Month

No.

 

 

888 8°C

TP

Year

Ident

 

AutoCal Auto Store

CalError

 

LoBat

 

 

 

 

 

 

 

SC

RCL

Status display indicator

CalClock (calibration interval and sensor evaluation)

Measured value display

Temperature display and further function indicators

Function display

[SET]

During calibration: number of the buffer set

indicators

 

 

[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

 

 

1.3Socket field

1

2

3

4

5

6

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:

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.

Further notes

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

 

 

2.1Authorized use

This meter is authorized exclusively for pH and ORP measurements in the laboratory.

The technical specifications as given in chapter 7 TECHNICAL 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.

2.2General 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 The smooth functioning and operational safety of the meter can only be operational safety 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 TECHNICAL 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:

zhas been damaged in transport

zhas been stored under adverse conditions for a lengthy period of time

zis visibly damaged

zno longer operates as described in this manual.

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

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

zEEC directives for protective labor legislation

zNational protective labor legislation

zSafety regulations

zSafety datasheets of the chemical manufacturers.

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Safety

Lab 860

 

 

14

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Lab 860

Commissioning

 

 

3 Commissioning

3.1Scope of delivery

zLab 860 laboratory meter

zPower pack

z4 batteries 1.5 V Mignon type AA

zUSB cable with A plug and B plug

zTransparent cover

zOperating manual

zCD-ROM with USB driver

 

3.2

Initial commissioning

 

Perform the following activities:

 

z Insert batteries

 

z Switch on the meter

 

z Set the date and time

 

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

Insert batteries

 

 

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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Xylem Lab 860 User Manual

Commissioning

Lab 860

 

 

Switching on the meter

Setting the date and time

Connecting the power pack

1

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.

1Switch on the meter with <On/Off>. A display test is briefly displayed.

2See 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).

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

4Connect the original power pack to an easily accessible power outlet.

Note

You can carry out measurements without the power pack.

16

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Lab 860

Operation

 

 

4 Operation

4.1Switching on the meter

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

2Press the <On/Off> key.

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:

zif the meter is supplied via the power pack or the USB interface

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

zif the printer cable is connected (for external printers).

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Operation

Lab 860

 

 

4.2General operating principles

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

4.2.1Operating modes

The instrument has the following operating modes:

zMeasurement

The display indicates the measurement data in the measured value display

zCalibration

The display guides you thru a calibration procedure with calibration information

zStorage

The meter stores measuring data automatically or manually

zTransmitting data

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

zConfiguration

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

4.2.2Operation

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

 

 

4.3Measuring

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

1Connect an electrode to the meter.

2Adjust the temperature of the buffer solutions or test solutions, or measure the current temperature, if you measure without a temperature sensor.

3Calibrate or check the meter with the electrode.

4Select 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:

1Measure the current temperature using a thermometer.

2Set 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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19

Operation

Lab 860

 

 

4.3.1Measuring 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.

 

 

 

 

 

 

 

 

 

 

pH

6 99 2

24 8°C

TP

Stability control SC The stability control function (drift control) checks the stability of the (drift control) 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.

1If 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).

3Start measurement with stability control with <OK>. SC flashes until a stable measured value is reached. This measured value is downloaded to the interface.

4If necessary, start the next measurement with stability control with <OK>.

5To 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

 

 

4.3.2Measuring the ORP

The meter can, in conjunction with an ORP electrode, measure the

ORP (mV) of a solution.

1Perform the preparatory activities according to page 19.

2Immerse the ORP electrode in the test sample.

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

4Wait for a stable measured value.

U

48 6

21 3

mV

TP

°C

Note

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

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Operation

Lab 860

 

 

4.4Calibration

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

z After connecting another electrode

 

 

 

 

 

calibrate?

z If the CalClock has expired and flashes

 

 

 

 

 

 

 

 

 

 

 

Buffer sets for

You can use the buffer sets quoted in the table for an automatic

 

calibration

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

 

1.679

 

25 °C

 

 

 

 

according to DIN 19266/NBS

 

4.006

 

 

 

 

 

 

 

 

6.865

 

 

 

 

 

 

 

 

9.180

 

 

 

 

 

 

 

 

12.454

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

SI Analytics GmbH Technical

 

2.000

 

25 °C

 

 

 

 

buffers according to DIN 19267

 

4.010

 

 

 

 

 

 

 

 

7.000

 

 

 

 

 

 

 

 

10.011

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

Merck1*

 

4.000

 

20°C

 

 

 

 

 

 

7.000

 

 

 

 

 

 

 

 

9.000

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

Merck2 *

 

1.000

 

20°C

 

 

 

 

 

 

6.000

 

 

 

 

 

 

 

 

8.000

 

 

 

 

 

 

 

 

13.000

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

Merck3 *

 

4.660

 

20°C

 

 

 

 

 

 

6.880

 

 

 

 

 

 

 

 

9.220

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

DIN 19267 *

 

1.090

 

25 °C

 

 

 

 

 

 

4.650

 

 

 

 

 

 

 

 

6.790

 

 

 

 

 

 

 

 

9.230

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

Mettler Toledo USA *

 

1.679

 

25 °C

 

 

 

 

 

 

4.003

 

 

 

 

 

 

 

 

7.002

 

 

 

 

 

 

 

 

10.013

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

22

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Lab 860

Operation

 

 

No.

Buffer set*

pH values

at

 

 

 

 

8

Mettler Toledo TEC *

1.995

25 °C

 

 

4.005

 

 

 

7.002

 

 

 

9.208

 

 

 

 

 

9

Fisher *

2.007

25 °C

 

 

4.002

 

 

 

7.004

 

 

 

10.002

 

 

 

 

 

10

Fluka BS *

4.006

25 °C

 

 

6.984

 

 

 

8.957

 

 

 

 

 

11

Radiometer *

1.678

25 °C

 

 

4.005

 

 

 

7.000

 

 

 

9.180

 

 

 

 

 

12

Baker *

4.006

25 °C

 

 

6.991

 

 

 

10.008

 

 

 

 

 

13

Metrohm *

3.996

25 °C

 

 

7.003

 

 

 

8.999

 

 

 

 

 

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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