Xylem handylab LF 12 User Manual

Operating manual

RCL

STO

Tref25

nLF

handylab LF 12

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Conductivity Meter

handylab LF 12

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.

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

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handylab LF 12 List of contents

handylab LF 12 - List of contents

1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.3 Jack field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.4 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

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

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

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

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

4.1 Switching on the measuring instrument . . . . . . . . . . . . . . . . . 17

4.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.2.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.2.2 Conductivity / Resistivity . . . . . . . . . . . . . . . . . . . . . . . 19

4.2.3 Salinity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.2.4 TDS (Total dissolved solids) . . . . . . . . . . . . . . . . . . . . 20

4.3 Determining/setting up the cell constant [C] . . . . . . . . . . . . . . 22

4.3.1 Determining the cell constant

(calibrating in the control standard) . . . . . . . . . . . . . . 23

4.3.2 Setting the cell constant manually . . . . . . . . . . . . . . . 25

4.3.3 Setting the temperature compensation TC . . . . . . . . . 28

4.4 Saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4.4.1 Saving manually . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4.4.2 Saving automatically . . . . . . . . . . . . . . . . . . . . . . . . . 34

4.4.3 Outputting the data storage . . . . . . . . . . . . . . . . . . . . 36

4.4.4 Clearing the memory . . . . . . . . . . . . . . . . . . . . . . . . . 40

4.5 Transmitting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4.5.1 Data transmission interval (Int 2) . . . . . . . . . . . . . . . . 41

4.5.2 Recorder (analog output) . . . . . . . . . . . . . . . . . . . . . . 43

4.5.3 PC/external printer (RS232 interface) . . . . . . . . . . . . 44

4.5.4 Remote control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4.6 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.7 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

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5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . . . . . 51

5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

5.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

List of contents handylab LF 12

6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

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handylab LF 12 Overview

RCL

STO

Tref25

nLF

1 Overview

The compact precision handheld meter handylab LF 12 enables you to carry out conductivity measurements rapidly and reliably. The handylab LF 12 provides the maximum degree of operating comfort, reliability and measuring certainty for all applications.

The proven procedure for adjusting or setting the cell constant and the special AutoRead function support you in your work with the handylab LF 12.

1 Keypad

2 Sample display

3 Jack field

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Overview handylab LF 12

CAL

STO

RUN/ENTER

ARRCL

STO

CAL

RCL

RUN/ENTER

1.1 Keypad

Key functions

Select the measuring mode <M>: – Conductivity/Resistivity

– Salinity

– Total dissolved solids (TDS)

Save a measured value

<STO>

Switch measuring instrument on/off

– Determine or set up the cell constant

– Select temperature compensation

<CAL>

Display/transmit measured values

<RCL>

Activate/deactivate the AutoRead function

<AR>

Increase values, scroll

<V >

Decrease values, scroll

<W >

Confirm entries, start AutoRead

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handylab LF 12 Overview

AutoCal DIN AutoCal TEC

mV/pH

Sal

mbar

OUpH

RCL

LoBat

Cal

ARng

Sal

Tref25

Tref20

Lin

nLF

Time

Baud

Day.Month No.

Ident

Year

Auto

Store

TDS

mg/l

Status display

Meas. value display

Function and temperature display

Sensor symbol

1.2 Display

1.3 Jack field

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1 Conductivity measuring cell

2 Plug-in power supply (optional)

3 Serial Interface RS 232 / analog output (recorder)

Caution

Only connect conductivity measuring cells to the measuring instrument that cannot return any voltages or currents that are not allowed (> SELV and > current circuit with current limiting). Nearly all measuring cells - especially SI Analytics measuring cells - fulfill these conditions.

Overview handylab LF 12

1.4 Technical Data

Dimensions

and weight

Mechanical

structure

Electrical safety

Test certificates

Ambient

conditions

Length [mm] 172

Width [mm] 80

Height [mm] 37

Weight [kg] Approx. 0.3

Type of protection IP 66

Protective class III

cETLus, CE

Storage - 25 °C ... + 65 °C

Operation -10 °C ... + 55 °C

Relative atmospheric

< 90 % of annual average

humidity

Measuring ranges

ϰ [µS/cm]

0.000 ... 1.999 (only for cell constant = 0.010 cm

-1

)

0.00 ... 19.99 (only at a cell const. = 0.010 cm cell const. = 0.090 ... 0.110 cm

-1

and

)

0.0 ... 199.9 0 ... 1999

ϰ [mS/cm]

0.00 ... 19.99

0.0 ... 199.9 0 ... 500

Spec. resistance [MΩ*cm]

0.000 ... 1.999

0.00 ... 19.99

0.0 ... 199.9 0 ... 1999

SAL 0.0 ... 70.0 according to the IOT table

TDS [mg/l] 0 ... 1999

Factor can be set to between 0.40 ... 1.00

T [°C] − 5.0 ... + 105.0

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handylab LF 12 Overview

Accuracy

(±1 digit)

ϰ ,

Resistivity

No compensation: 0.5 %

Nonlinear compensation : Precision Sample temperature ± 0.5 % 0 °C ... 35 °C

according to EN 27 888;

± 0.5 % 35 °C ... 50 °C

extended nLF function

Linear compensation Accuracy Sample temperature ± 0.5 % 10 °C ... 75 °C (The accuracy percentage always refers to the measured value.)

SAL Range 0.0 ... 42.0

Accuracy Sample temperature ± 0.1 5 °C ... 25 °C ± 0.2 25 °C ... 30 °C

Cell constant,

calibration

Cell constant,

selection

Reference

temperature

TDS [mg/l] 1

T [°C] NTC 30:

Accuracy ± 0.1

PT 1000: Accuracy Operating temperature ± 0.5 0 °C ... 15 °C ± 0.1 5 °C ... 35 °C ± 1 35 °C ... 55 °C

C [cm-1] 0.450 ... 0.500

0.800 ... 1.200

C [cm-1] 0.010 fixed

0.090 ... 0.110

0.250 ... 2.500

Tref Can be set to 20 °C or 25 °C

Temperature input

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Manual [°C] -5 ... +100

Overview handylab LF 12

Analog output Automatic switchover when a recorder is connected.

Output signal 0 ... 1.999 V for range 0 ... 1999 digits

Accuracy ± 0.5 % of display value

Internal resistance < 5 Ohm (curr

ent limited to max. 0.2 mA output current)

Serial interface Automatic switchover when a PC or printer is connected.

Type RS232, data output

Baud rate Can be set to

1200, 2400, 4800, 9600 Baud

Data bits 8

Stop bit 2

Parity None

Handshake RTS/CTS + Xon/Xoff

Cable length Max. 15 m

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handylab LF 12 Overview

FCC Class A Equipment Statement

Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Power supply

Batteries 4 x 1.5 V alkali-manganese batteries, Type

Operational life Approx. 2500 operating hours (depending

on conductivity)

Mains FRIWO FW7555M/09, 15.1432.500-00

Friwo Part. No. 1883259 Input: 100 ... 240 V ~ / 50 ... 60 Hz / 400 mA Output: 9 V = / 1.5 A Connection max. overvoltage category II Primary plugs contained in the scope of delivery: Euro, US, UK and Australian.

Applicable

guidelines and

norms

EMC EC guideline 2004/108/EC

EN 61326-1 EN 61000-3-2 EN 61000-3-3 FCC Class A

Instrument safety EC guideline 2006/95/EC

EN 61010-1 ANSI/UL 61010-1 CAN/CSA-C22.2 No. 61010-1

Climatic class VDI/VDE 3540

Type of protection EN 60529

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Overview handylab LF 12

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handylab LF 12 Safety

2Safety

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

Target group The measuring instrument was developed for work in the field and in the lab-

oratory. 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

Further notes

The individual chapters of this operating manual use safety instructions such as the label shown below to indicate various hazards or dangers:

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.

2.1 Authorized use

The authorized use of the measuring instrument consists exclusively of the measurement of conductivity, salinity, temperature and TDS (total dissolved solids) in the field and laboratory. The technical specifications as given in section 1.4 T observed. Only the operation and running of the measuring instrument according to the instructions given in this operating manual is authorized. Any other use is considered to be unauthorized.

ECHNICAL DATA must be

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Safety handylab LF 12

2.2 General safety instructions

This instrument is built and inspected according to the relevant guidelines and norms for electronic measuring instruments (see section 1.4 T D

ATA).

It left the factory in a safe and secure technical condition.

ECHNICAL

Function and oper-

ating safety

The smooth functioning and operational safety of the measuring instrument 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 measuring instrument can only be guaranteed under the environmental conditions that are specified in section 1.4 T

ECHNICAL DATA.

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.

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 measuring instrument:

z has been damaged in transport

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

z is visibly damaged

Obligations of the

purchaser

z no longer operates as described in this manual.

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

The purchaser of the measuring instrument 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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handylab LF 12 Commissioning

3 Commissioning

3.1 Scope of delivery

z Handheld meter, handylab LF 12

z Operating manual and short operating manual

z 4 batteries, 1.5 V Mignon type AA (in the instrument)

3.2 Initial commissioning

Perform the following activities:

z Set the date and time

z Connect the plug-in power supply, optional.

Setting the date

and time

1 Press the <M> key and hold it down.

2 Press the <ON/OFF> key.

The display test appears briefly on the display.

3 Press the <RUN/ENTER> key repeatedly until the date ap-

pears on the display.

4 Set the date of the current day with <V> <W>.

5 Confirm with <RUN/ENTER>.

The date (month) flashes in the display.

6 Set the current month with <V> <W>.

7 Confirm with <RUN/ENTER>.

The year appears on the display.

8 Set the current year with <V> <W>.

9 Confirm with <RUN/ENTER>.

The hours flash on the display.

10 Set the current time with <V> <W>.

11 Confirm with <RUN/ENTER>.

The minutes flash on the display.

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12 Set the current time with <V> <W>.

13 Confirm with <RUN/ENTER>.

The instrument switches to the measuring mode.

Commissioning handylab LF 12

Connecting the

plug-in power

supply (option)

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 V DC). This saves the batteries.

Caution

The line voltage at the operating site must lie within the input voltage range of the original plug-in power supply (see section 1.4 T

ECHNICAL DATA).

Caution

Use original plug-in power supplies only (see section 1.4 T

ECHNICAL DATA).

1 Plug the jack (1) into the socket (2) of the measuring instru-

ment.

2 Connect the original SI Analytics plug-in power supply (3) to an

easily accessible mains socket.

Note

You can also measure without the plug-in power supply.

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handylab LF 12 Operation

4 Operation

4.1 Switching on the measuring instrument

1 Connect a conductivity measuring cell to the measuring instru-

ment.

2 Press the <ON/OFF> key.

The display test appears briefly on the display. Subsequently, the selected cell constant and the temperature compensation that was set up appear for approx. one second one after the other. The measuring instrument then automatically switches to the measuring mode that was last selected.

Note

The measuring instrument has an energy saving feature to avoid unnecessary battery depletion. The energy saving feature switches the measuring instrument off if no key has been pressed for an hour. The energy saving feature is not active when the AutoStore function is active.

The energy saving feature is also not active

z if the power is supplied by the plug-in power supply,

z if the communication cable and a PC with a running communication pro-

gram are connected,

z if the recorder cable is connected,

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

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Operation handylab LF 12

4.2 Measuring

4.2.1 General information

Preparatory

activities

Temperature

sensor

Perform the following preparatory activities when you want to measure:

1 Connect the conductivity measuring cell to the measuring in-

strument.

2 In conjunction with the measuring cell, check or calibrate the

measuring instument. How to calibrate is described in section

4.3.

3 Select the measuring mode with <M>.

Caution

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

Only carry out measurements with a temperature sensor. The temperature sensor is shown on the display by TP.

Note

The conductivity measuring instrument automatically recognizes the type of the temperature sensor used. This enables to connect measuring cells with the NTC30 or Pt1000.

Temperature

compensation

Reference

temperature, Tref

The instrument has a nonlinear temperature compensation that can be switched off (see section 4.3.3 S

ETTING THE TEMPERATURE COMPENSATION

TC).

The reference temperature (Tref) can be switched between 20 °C and 25 °C. It appears on the display as Tref20 or Tref25. To switch over the reference temperature, see section 4.6 C

ONFIGURATION.

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handylab LF 12 Operation

ARng

RCL

Cal

Lin

Tref20

LoBat

Sal

TDS

Auto

Store

Sal

mbar

mg/l

OUpH

mV/pH

AutoCal DIN AutoCal TEC

Time

Baud

Day.Month No.

Ident

Year

Tref25 nLF

mg/l

ARng

RCL

Cal

Lin

Tref20

LoBat

Sal

TDS

Auto

Store

Sal

mbar

OUpH

mV/pH

AutoCal DIN AutoCal TEC

Time

Baud

Day.Month No.

Ident

Year

Tref25 nLF

4.2.2 Conductivity / Resistivity

Note

You can display measured values in the units μS/cm (conductivity) or MΩcm (resistivity). This setting is described in section 4.6 C

Thus, you can carry out conductivity measurements or measurements of the resistivity:

1 Perform the preparatory activities according to section 4.2.1.

2 Immerse the conductivity measuring cell in the test sample.

3 Press the <M> key until ϰ appears on the status display. De-

pending on the setting, one of the following display indicators appears on the display:

Conductivity

μS/cm

ONFIGURATION.

Resistivity

MΩ⋅cm

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4 Wait for a stable measured value.

Operation handylab LF 12

Tref25

mg/l

RCL

ARng

LoBat

Cal

Tref20

Lin

TDS

Auto

Store

Sal

mbar

OUpH

mV/pH

AutoCal DIN

AutoCal TEC

Time

Baud

Day.Month No.

Ident

Year

Sal

nLF

4.2.3 Salinity

You can measure the salinity as follows:

1 Perform the preparatory activities according to section 4.2.1.

2 Immerse the conductivity measuring cell in the test sample.

3 Press the <M> key until Sal appears on the status display. The

salinity value appears on the display.

4 Wait for a stable measured value.

4.2.4 TDS (Total dissolved solids)

You can measure the total dissolved solids as follows:

1 Perform the preparatory activities according to section 4.2.1.

2 Immerse the conductivity measuring cell in the test sample.

3 Press the <M> key until TDS appears on the status display.

The value of the total dissolved solids appears in the upper display line. The TDS factor appears in the lower display line.

4 Using <V> <W>, set the TDS factor (0.40 ... 1.00).

(The TDS factor has to be determined by a comparison measurement before.)

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+ 44 hidden pages