Xylem Lab 960 User Manual

Operating manual

Lab 960

nLF

5
	3
2		0
5			°
	0
			C

µ S/cm

TP

Lab	960

Laboratory conductivity meter

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Lab 960

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 © 2009, 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 960

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

Konduktometer	Conductivity meter	Conductimètre
Lab 960	Lab 960	Lab 960
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

Konduktometer Lab 960

30. Oktober 2009

SI Analytics GmbH

Hattenbergstr. 10

D-55122 Mainz

Deutschland, Germany, Allemagne

30. Oktober, October 30, 30 octobre 2009 AGQSF 0000-A103-01/091030

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Lab 960

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Lab 960	Contents

Lab 960 - 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		19

4.1 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.2 General operating principles . . . . . . . . . . . . . . . . . . . . . . 20 4.2.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . 20 4.2.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.3 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.3.1 Measuring the conductivity. . . . . . . . . . . . . . . . . 22 4.3.2 Measuring the resistivity. . . . . . . . . . . . . . . . . . . 22 4.3.3 Measuring the salinity . . . . . . . . . . . . . . . . . . . . 23 4.3.4 Measuring the total dissolved solids (TDS) . . . . 24 4.3.5 Measuring with stability control . . . . . . . . . . . . . 25

4.4 Determining/setting up the cell constant [C] . . . . . . . . . . 26 4.4.1 Determining the cell constant (calibration) . . . . . 26 4.4.2 Using the last calibrated cell constant . . . . . . . . 29 4.4.3 Setting the cell constant manually . . . . . . . . . . . 30 4.5 Setting the temperature compensation TC . . . . . . . . . . . 34

4.6 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 4.6.1 Manual storage . . . . . . . . . . . . . . . . . . . . . . . . . 38 4.6.2 Automatic storage at intervals . . . . . . . . . . . . . . 40 4.6.3 Downloading the data storage . . . . . . . . . . . . . . 42 4.6.4 Erasing the data memory . . . . . . . . . . . . . . . . . . 43 4.6.5 Downloading calibration data . . . . . . . . . . . . . . . 43

4.7 Transmitting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 4.7.1 Options for data transmission . . . . . . . . . . . . . . 45

4.7.2Automatically downloading measurement datasets

at intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 4.7.3 Downloading stored measurement datasets . . . 46

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Contents	Lab 960

4.7.4 Downloading calibration data . . . . . . . . . . . . . . . 46 4.7.5 RS232 interface . . . . . . . . . . . . . . . . . . . . . . . . . 46 4.7.6 USB interface (device) . . . . . . . . . . . . . . . . . . . . 47 4.7.7 Operation with MultiLab pilot . . . . . . . . . . . . . . . 47 4.8 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 4.8.1 System settings . . . . . . . . . . . . . . . . . . . . . . . . . 49 4.8.2 Measurement settings . . . . . . . . . . . . . . . . . . . . 51 4.8.3 Interval for automatic storing (AutoStore) . . . . . . 53 4.8.4 Interval for automatic data transmission . . . . . . . 54

4.9 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 4.9.1 Resetting the cell constant . . . . . . . . . . . . . . . . . 55 4.9.2 Resetting meter settings . . . . . . . . . . . . . . . . . . . 56

5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 59

5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 5.1.1 Replacing the batteries . . . . . . . . . . . . . . . . . . . . 59 5.2 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

5.3 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 5.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

7.1 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 7.2 Measuring ranges, resolution, accuracy . . . . . . . . . . . . . 65

8 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

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Lab 960	Overview

1 Overview

The Lab 960 compact precision conductivity meter enables you to perform conductivity measurements quickly and reliably. The Lab 960 provides the maximum degree of operating comfort, reliability and measuring certainty for all applications.

The proven procedures for determining or adjusting the cell constant support your work with the conductivity meter.

nLF

5
	3
2		0
5			°
	0
			C

µ S/cm

TP

Lab 960

3

2

1

1Keypad

2Display

3Socket field

Note

The meter is also available You will find information on Analytics GmbH laboratory

as part of an individual Set of equipment. this and other accessories in the SI catalog or via the Internet.

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Overview	Lab 960

1.1Keypad

MODE

CAL

SC

STO RCL

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_>).

	<On/Off>:	Switch the meter on/off
	<On/Off_>:	Resetting the determined cell constant
	<MODE>:	Select measured parameter
MODE	<MODE_>:	Open setting menu for calibration and
		measurement
	<CAL>:	Call up calibration procedure
CAL	<CAL_>:	Call up calibration data
	<SC>:	Activate / deactivate stability control
SC	<SC_>:	Set the interval for data transmission
	<STO>:	Store measured value
STO	<STO_>:	Set the interval for automatic storing
		processes
	<RCL>:	Display / transmit measured values
RCL	<RCL_>:	and calibration records
		Erase stored measured values
	<▲>:	Increment values, scroll

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Lab 960	Overview

Temperature display, function display indicators, status display indicators

	<▼>:	Decrement values, scroll
	<OK>:	Confirm entries
	<OK_>:	Open setting menu for system settings

1.2Display

Measured variable

Measured value display

Temperature display, function display indicators, status display indicators

[AR]	Stability control is active
[ARng]	Automatic range switch-over: meter measures with
	highest possible resolution
[Auto][Store]	Automatic storing is switched on
[Cal]	Calibration
[Lin]	Linear temperature compensation
[LoBat]	With battery operation: Batteries almost empty
[nLF]	Nonlinear temperature compensation
[RCL]	Memory display / memory download
[TP]	Temperature measurement active
[Tref20]	Reference temperature 20 °C
[Tref25]	Reference temperature of 25 °C

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Overview	Lab 960

1.3Socket field

Connectors:

1 Conductivity measuring cell

2 Temperature sensor

3

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 measuring cells - in particular SI Analytics GmbH measuring cells - fulfill these conditions.

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Lab 960	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 960

2.1Authorized use

Authorized use of the meter consists exclusively of the measurement of conductivity, temperature, salinity and TDS (total dissolved solids) in a laboratory.

The technical specifications as given in chapter 7 TECHNICAL DATA (page 63) 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 63).

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 960	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 meter.

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 960

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Lab 960	Commissioning

3 Commissioning

3.1Scope of delivery

zLab 960 laboratory meter

zPower pack

z4 batteries 1.5 V Mignon type AA

zZ875 USB cable with A plug on 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 43.

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Commissioning	Lab 960

Switching on the meter

Setting the date and time

Connecting the power pack

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 49

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 63).

CAUTION

Use original power packs only (see page 63).

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

4Connect 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 960	Commissioning

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Commissioning	Lab 960

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Lab 960	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 49).

The energy saving feature is not active:

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

zif the automatic storing function is active (see page 40)

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 960

4.2General operating principles

This section contains basic information of the operation of the Lab 960.

4.2.1Operating modes

The instrument has the following operating modes:

zMeasuring

The display indicates the measurement data in the measured value display

zCalibration

The display guides you thru a calibration procedure with calibration information

zStorage in memory

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 960	Operation

4.3Measuring

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

1Connect a measuring cell to the meter.

2Adjust the temperature of the test solutions and measure the current temperature if the measurement is made without a temperature sensor.

3Calibrate or check the meter with the measuring cell.

4Select the measured parameter with <MODE>.

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 The temperature measurement is absolutely essential for a reproducible conductivity measurement. If a temperature sensor is connected, it is indicated on the display by TP.

If you use a conductivity measuring cell without integrated temperature sensor, we recommend to use an external temperature sensor.

Note

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

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Operation	Lab 960

4.3.1Measuring the conductivity

1	Perform the preparatory activities according to page 21.
2	Immerse the conductivity measuring cell in the test sample.
3	If necessary, scroll with <MODE> until the measured
	parameter ӕ with the unit mS/cm or µS/cm is displayed.
4	Wait for a stable measured value.

530 µS/cm

25 0 °C TP

Tref25

nLF

5 Measurement with stability control (see page 25).

4.3.2Measuring the resistivity

1	Perform the preparatory activities according to page 21.
2	Immerse the conductivity measuring cell in the test sample.
3	If necessary, scroll with <MODE> until the measured
	parameter ӕ with the unit MOhm is displayed.
4	Wait for a stable measured value.

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Lab 960							Operation

5 Measurement with stability control (see page 25).

4.3.3Measuring the salinity

1Perform the preparatory activities according to page 21.

2Immerse the conductivity measuring cell in the test sample.

3Using <MODE>, scroll as necessary until the measured parameter Sal is displayed.

4Wait for a stable measured value.

Sal

323

21 2

°C TP

nLF

5 Measurement with stability control (see page 25).

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Operation	Lab 960

4.3.4Measuring the total dissolved solids (TDS)

1	Perform the preparatory activities according to page 21.
2	Immerse the conductivity measuring cell in the test sample.
3	Using <MODE>, scroll as necessary until the measured
	parameter TDS is displayed.
4	Using <▲><▼>, set the TDS factor (0.40 ... 1.00).

TDS

35 3 mg/l

10 0

Tref25

nLF

5 Wait for a stable measured value.

TDS

313 mg/l

08 7

Tref25

nLF

6 Measurement with stability control (see page 25).

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