SI Analytics Handylab pH LF 12 Bedienungsanleitung

ba75370e01 12/2002

Operating manual

ba75370e

handylab pH/LF 12

RCL

STO

CAL

Tref25

nLF

pH/Conductivity measuring instrument

Accuracy when

going to press 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.

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

purchase.

The instrument warranty covers manufacturing faults that are discov-

ered within the warranty period. The warranty does not cover compo-

nents 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 Schott-Geräte GmbH, Mainz.

Printed in Germany.

handylab pH/LF 12 Contents

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

1.1 General features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.4 Jack field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.5 Operating structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.6 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

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 pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . 18

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

4.2.2 Measuring the pH value . . . . . . . . . . . . . . . . . . 20

4.2.3 Measuring the ORP voltage . . . . . . . . . . . . . . . 22

4.3 pH calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.3.1 AutoCal TEC . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.3.2 AutoCal DIN . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.3.3 ConCal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4.4 Conductivity/Salinity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4.4.1 General information . . . . . . . . . . . . . . . . . . . . . . 35

4.4.2 Measuring the conductivity . . . . . . . . . . . . . . . . 37

4.4.3 Measuring the salinity . . . . . . . . . . . . . . . . . . . . 37

4.4.4 AutoRead AR (drift control) . . . . . . . . . . . . . . . . 38

4.4.5 Determining the cell constant (Calibration in the

control standard) . . . . . . . . . . . . . . . . . . . . . . . . 39

4.4.6 Setting the temperature compensation . . . . . . . 42

4.5 Calibration intervals (Int 3, Int 5) . . . . . . . . . . . . . . . . . . 46

4.6 Saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

4.6.1 Saving manually . . . . . . . . . . . . . . . . . . . . . . . . 47

4.6.2 Switching on AutoStore (Int 1) . . . . . . . . . . . . . 49

4.6.3 Outputting the data storage . . . . . . . . . . . . . . . . 51

4.6.4 Clearing the memory . . . . . . . . . . . . . . . . . . . . . 56

4.7 Transmitting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

4.7.1 Data transmission interval (Int 2) . . . . . . . . . . . 57

4.7.2 PC/external printer (RS232 interface) . . . . . . . . 58

4.7.3 Remote control . . . . . . . . . . . . . . . . . . . . . . . . . 59

4.8 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Contents handylab pH/LF 12

4.9 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 67

5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

5.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

6.1 pH system messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

6.2 Conductivity system messages . . . . . . . . . . . . . . . . . . . 71

6.3 General errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

7 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

handylab pH/LF 12 Overview

1Overview

1.1 General features

This compact precision handheld meter enables you to carry out pH /

ORP measurements and conductivity measurements rapidly and reli-

ably.

The handheld meter provides the maximum degree of operating com-

fort, reliability and measuring certainty for all applications.

The proven MultiCal®calibration procedures or the proven procedure

for adjusting or setting the cell constant and the special AutoRead func-

tion support you in your work with the handheld meter.

1Keypad

2Sample display

3Jack field

RCL

STO

CAL

Tref25

nLF

Overview handylab pH/LF 12

1.2 Keypad

Key functions

CAL

STO

RUN/ENTER

RCL

Select the measured variable <M>:

–pH value / ORP voltage

–Conductivity / salinity

Save a measured value

<STO>

Switch measuring instrument on/off

Calibrate the currently set measured variable

<CAL>

Display/transmit measured values

<RCL>

Activate/deactivate the AutoRead function

<AR>

Select the measuring mode, increase values,

scroll <



Select the measuring mode, decrease values,

scroll <



Confirm entries, start AutoRead

STO

CAL

RCL

RUN/ENTER

handylab pH/LF 12 Overview

1.3 Display

1.4 Jack field

1Conductivity measuring cell

2pH electrode

3pH temperature probe

4Plug-in power supply (optional)

5Serial interface RS 232

Sal

mg/l

mbar

TDS

Time

Baud

Day.Month No.

Ident

Year

LoBat

UpH

RCL

Auto

Store

ARng AR

AutoCal DIN

AutoCal TEC

Lin

Tref25 Tref20

nLF

Cal

mV/pH

Sal

Status display

Meas. value display

Function and

temperature display

Probe symbol

123

Overview handylab pH/LF 12

1.5 Operating structure

The following overview diagram shows which keys you have to press

to select between the different measuring modes:

Note

When connecting a conductivity measuring cell with temperature

probe, the measuring instrument recognizes the probe and automati-

cally switches to the last selected conductivity measuring mode. As

soon as the probe is disconnected, the instrument switches to the pH

or ORP measuring mode.

handylab pH/LF 12 Overview

1.6 Technical data

Dimensions

and weight

Mechanical

structure

Electrical

safety

Test certificates

Ambient

conditions

pH/ORP measuring

ranges

Precision of

pH/ORP

(± 1 digit)

pH correction function

Length [mm] 172

Width [mm] 80

Height [mm] 37

Weight [kg] approx. 0.3

Type of protection IP 66

Protective class III

GS, cETLus, CE

Storage - 25 °C ... + 65 °C

Operation -10 °C ... + 55 °C

Relative atmospheric

humidity

annual average < 90 %

Measuring range Resolution

pH - 2.00 ... + 19.99 0.01

U [mV] - 1999 ... + 1999 1

T [°C] - 5.0 ... + 105.0 0.1

pH (after calibration) ± 0.01

U [mV] ± 1

T [°C] ± 0.1

Temperature input

Manually [°C] - 20 ... + 130

Overview handylab pH/LF 12

Measuring ranges of

conductivity

Precision of

conductivity (± 1 digit)

Cell constant,

calibrating

Reference

temperature of

conductivity

Measuring range Resolution

[µS/cm] 0 ... 1999 1

[mS/cm] 0.00 ... 19.99

0.0 ... 199.9

0 ... 500

0.01

0.1

SAL 0.0 ... 70.0 accord-

ing to the IOT table

0.1

T [°C] −5.0 ... + 105.0 0.1

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

T [°C] ± 0.1

C [cm-1] 0.450 ... 0.500

Tref Can be set to 20 °C or 25 °C

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