Xylem handylab pH 11 User Manual

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Operating manual

handylab pH 11

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pH 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 pH 11 List of contents

handylab pH 11 - 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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

3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1 Switching on the measuring instrument . . . . . . . . . . . . . . . . . 15

4.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.2.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.2.2 Measuring the pH value . . . . . . . . . . . . . . . . . . . . . . . 17

4.2.3 Measuring the ORP voltage . . . . . . . . . . . . . . . . . . . . 18

4.3 Calibrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.3.1 AutoCal TEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.3.2 AutoCal DIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.3.3 ConCal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.4 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4.5 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

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5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . . . . . 35

5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

5.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

List of contents handylab pH 11

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handylab pH 11 Overview

1 Overview

The compact precision handheld meter handylab pH 11 enables you to carry out pH measurements rapidly and reliably. The handylab pH 11 provides the maximum degree of operating comfort, reliability and measuring certainty for all applications.

The proven calibration procedures and the special AutoRead function support you in your work with the handylab pH 11.

1 Keypad

2 Sample display

3 Jack field

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Overview handylab pH 11

CAL

RUN/ENTER

CAL

RUN/ENTER

1.1 Keypad

Key functions

Select the measuring mode <M>: –pH value

–ORP voltage

Switch measuring instrument on/off

Calibration of the current measured variable

<CAL>

Activate/deactivate the AutoRead function

<AR>

Select the measuring mode Increase values, scroll

<▲>

Select the measuring mode Decrease values, scroll

<▼ >

Confirm entries, start AutoRead

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handylab pH 11 Overview

°F

ConCal

Auto

Store

Time

Baud

Day.Month No.

Ident

Year

RCL

TempError

mg/L

% ppm

mol/L

ISE

mV/pH

°C

LoBat

AutoCal DIN

CalError

ARng

AutoCal TEC

UpH

Status display

Meas. value display

Function and temperature display

Sensor symbol

1.2 Display

1.3 Jack field

The meter has either a DIN socket or a BNC socket. The figure shows a meter with DIN socket (1).

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1 pH electrode or single-rod measuring electrode

2 Reference electrode

3 Temperature probe

Caution

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

Overview handylab pH 11

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

pH/ORP

measuring ranges

Precision of

pH/ORP

(± 1 digit)

Measuring range Resolution

pH - 2.000 ... + 19.999

- 2.00 ... + 19.99

U [mV] - 999.9 ... + 999.9

- 1999 ... + 1999

0.001

0.01

0.1 1

T [°C] - 5.0 ... + 105.0 0.1

pH (± 2 pH units from the

± 0.005 at + 15 °C ... + 35 °C ± 0.01

calibration point)

U [mV] ± 0.3 at + 15 °C ... + 35 °C

± 1

T [°C] NTC 30:

Accuracy ± 0.1

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

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handylab pH 11 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.

Correction

function

Power supply

Applicable

guidelines and

norms

Temperature input

Manually [°C] - 20 ... + 130

Batteries 4 x 1.5 V alkali-manganese batteries, Type

Operational life Approx. 5000 operating hours

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 pH 11

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handylab pH 11 Safety

2Safety

This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the pH meter. 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 pH and ORP measurement 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 pH 11

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 pH 11 Commissioning

3 Commissioning

3.1 Scope of delivery

z Handheld meter, handylab pH 11

z Operating manual and short operating manual

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

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Commissioning handylab pH 11

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handylab pH 11 Operation

4 Operation

4.1 Switching on the measuring instrument

1 Press the <ON/OFF> key.

The display test appears briefly on the display. Subsequently, the slope and asymmetry used appear for approx. one second one after the other. In addition, the calibration procedure of the last calibration is shown (AutoCal TEC or AutoCal DIN or no display in the delivery state or following initialization). 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.

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Operation handylab pH 11

4.2 Measuring

4.2.1 General information

You can measure the following variables:

z pH value

z ORP voltage

Preparatory

activities

Temperature

sensor

Perform the following preparatory activities when you want to measure:

1 Connect the electrode to the measuring instrument.

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

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

3 In conjunction with the electrode, check or calibrate the mea-

suring instument. How to calibrate is described in section 4.3.

4 Select the measuring mode with <M>.

Note

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

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 measuring instrument automatically recognizes the type of the temperature sensor used. Therefore, you can connect temperature sensors of the NTC30 or Pt1000 type.

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 of the test sample using a

thermometer.

2 Enter the temperature on the instrument: Set the temperature

value of the test sample using <▲ > <▼>.

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handylab pH 11 Operation

mV/pH

mol/L

Auto

Store

TempError

RCL

LoBat

AutoCal DIN

CalError

ARng

AutoCal TEC

ConCal

Time

Baud

Day.Month No.

Ident

Year

°F

mg/L

% ppm

ISE

°C

4.2.2 Measuring the pH value

1 Perform the preparatory activities according to section 4.2.1.

2 Immerse the pH electrode in the test sample.

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

pH value appears on the display.

Setting the

resolution

AutoRead

(drift control)

The measuring instrument shows the pH value with a resolution of 0.01 or

0.001. (Default setting is 0.01). To change the resolution, press the <M> key while pressing the <RUN/ENTER> key.

The AutoRead function (drift control) checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of the measured values.

For identical measurement conditions, the following criteria apply:

Reproducibility Response time

Better than 0.02 > 30 seconds

1 Call up the pH measuring mode with <M> and <▲> <▼> .

2 Activate the AutoRead function with <AR>.

The current measured value is frozen (hold function).

3 Start AutoRead with <RUN/ENTER>.

AR flashes until a stable measured value is reached. This measured value is transmitted to the interface.

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4 If necessary, start the next AutoRead measurement with

<RUN/ENTER>.

5 To terminate the AutoRead function: Press the <AR> key.

Operation handylab pH 11

/pH

ConCal

Auto

Store

LoBat

AutoCal DIN

CalError

ARng

AutoCal TEC

°F

Time

Baud

Day.Month No.

Ident

Year

RCL

TempError

mg/L

% ppm

mol/L

ISE

°C

Note

The current AutoRead measurement can be terminated at any time (accepting the current value) by pressing <RUN/ENTER>.

4.2.3 Measuring the ORP voltage

In conjunction with an ORP electrode, e.g. BlueLine 31Rx, the measuring instrument can measure the ORP voltage (U) of a solution.

1 Perform the preparatory activities according to section 4.2.1.

2 Immerse the ORP electrode in the test sample.

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

The ORP voltage (mV) of the test sample appears on the display.

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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handylab pH 11 Operation

4.3 Calibrating

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

pH electrode. As a result, an inexact measured value is displayed. Calibration determines the current values of the asymmetry and slope of the electrode and stores them in the measuring instrument. Thus, you should calibrate at regular intervals.

When to calibrate? z After connecting another electrode

z after a voltage interruption, e. g. after changing the batteries

You can select between 3 calibration procedures:

AutoCal TEC is specially adapted to the SI Analytics technical buffer solutions as a fully au-

tomatic two-point or three-point calibration. The buffer solutions are auto- matically recognized by the measuring instrument. Depending on the instrument setting (see section 4.4 C the relevant buffer nominal value or the current electrode voltage in mV. The calibration can be terminated after the first buffer solution. This corresponds to a single-point calibration. For this, the instrument uses the Nernst slope (-59.2 mV/pH at 25 °C) and determines the asymmetry of the electrode.

ONFIGURATION), the instrument displays

AutoCal DIN is specially adapted to the permanently programmed buffer solutions in ac-

cordance with DIN19266 as a fully automatic two-point or three-point cali- bration. The buffer solutions are automatically recognized by the measuring instrument. Depending on the instrument setting (see section

4.4 C

ONFIGURATION), the instrument displays the relevant buffer nominal val-

ue or the current electrode voltage in mV. The calibration can be terminated after the first buffer solution. This corresponds to a single-point calibration. For this, the instrument uses the Nernst slope (-59.2 mV/pH at 25 °C) and determines the asymmetry of the electrode.

ConCal This function is a conventional two-point calibration using two buffer solu-

tions (pH 7.0 ± 0.5 and any other buffer solution) or a single-point calibra-

tion using any buffer solution and is used as a high-speed method.

AutoRead When calibrating with AutoCal TEC and AutoCal DIN, the AutoRead function

is automatically activated. The current AutoRead measurement can be terminated at any time (accepting the current value) by pressing <RUN/ENTER>.

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Operation handylab pH 11

Displaying

calibration data

Calibration

evaluation

Each time the instrument is switched on, the calibration data are shown on the display for a short time (see section 4.1 S

STRUMENT). In order to view the calibration data, switch the measuring instru-

WITCHING ON THE MEASURING IN-

ment off and switch it on again.

After the calibration, the measuring instrument automatically evaluates the current status of the electrode. The asymmetry and slope are evaluated separately. The worst evaluation appears on the display.

Display Asymmetry

[mV]

Slope [mV/pH]

-15 ... +15 -60.5 ... -58

-20 ... +20 -58 ... -57

-25 ... +25 -61 ... -60.5 or

-57 ... -56

Preparatory

activities

-30 ... +30 -62 ... -61 or

-56 ... -50

Clean the electrode according to the electrode operating manual

Eliminate the error according to chapter 6 W

HAT TO DO IF...

< -30 or > 30

< -62 or > -50

1 Switch on the measuring instrument with <ON/OFF>.

2 Connect the pH electrode to the measuring instrument.

3 Keep the buffer solutions ready.

4 Adjust the temperature of the solutions and measure the cur-

rent temperature if the measurement is made without temperature sensor.

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handylab pH 11 Operation

mV/pH

mol/L

Auto

Store

RCL

LoBat

AutoCal DIN

CalError

ARng

ConCal

Time

Baud

Day.Month No.

Ident

Year

°F

TempError

mg/L

% ppm

ISE

°C

AutoCal TEC

4.3.1 AutoCal TEC

For this procedure, use any two or three technical buffer solutions in ascending or descending order (pH values at 25 °C: 2.00 / 4.01 / 7.00 / 10.01).

Note

The calibration for pH 10.01 is optimized for the SI Analytics technical buffer solution pH 10.01. Other buffer solutions can lead to an erroneous calibration. The correct buffer solutions are given in the SI Analytics catalog or in the Internet.

Note

The buffer solutions are automatically recognized by the measuring instrument. Depending on the instrument setting (see section 4.4 C the instrument displays the relevant buffer nominal value or the current electrode voltage in mV.

Note

Skip the steps 2, 7 and 14 if you use a temperature sensor.

ONFIGURATION),

1 Press the <CAL> key repeatedly until the Ct1 display indicator

and the function display AutoCal TEC appears. The sensor symbol displays the evaluation of the last calibration (or no sensor symbol in the delivery state or after the measurement parameter has been reset).

2 If necessary, enter the temperature of the first buffer solution

with <▲> <▼>.

3 Immerse the pH electrode in the first buffer solution.

4 Press the <RUN/ENTER> key.

The AR display indicator flashes. The electrode voltage (mV) or the buffer nominal value appears on the display. Example:

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Operation handylab pH 11

Cal

Tref20

Lin

Cal

Tref25

ARng

AutoCal DIN

Tref25

Auto

AutoCal DIN

ARng

Tref20

Lin

1/1/

RCL

OO UpHUpH SalSal

Store

Auto

LoBat

nLF

SalSal

mg/lmg/l

mV/pHmV/pH

S/S/

cmcm

TDSTDS

mbarmbar

Time

Baud

Day.Month No.

Ident

Year

Time

Baud

Day.Month No.

Ident

Year

pHpH

AutoCal TEC

ARAR

mV/pH

mol/L

Auto

Store

RCL

LoBat

AutoCal DIN

CalError

ARng

ConCal

Time

Baud

Day.Month No.

Ident

Year

°F

TempError

mg/L

% ppm

ISE

°C

AutoCal TEC

5 When the measured value is stable, Ct2 appears.

Note

At this point, the AutoCal TEC calibration can be terminated with <M>. This corresponds to a single-point calibration. For this, the instrument uses the Nernst slope (-59.2 mV/pH at 25 °C) and determines the asymmetry of the electrode.

6 To continue the two-point calibration, thoroughly rinse the

electrode with deionized water.

7 If necessary, enter the temperature of the second buffer solu-

tion with <▲> <▼>.

8 Immerse the pH electrode in the second buffer solution.

9 Press the <RUN/ENTER> key.

The AR display indicator flashes. The electrode voltage (mV) or the buffer nominal value appears on the display. Example:

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handylab pH 11 Operation

TDS

Cal

Tref20

Lin

Cal

Tref25

ARng

AutoCal DIN

Tref25

Auto

AutoCal DIN

ARng

Tref20

Lin

1/1/

RCL

OO UpHUpH SalSal

Store

Auto

LoBat

nLF

SalSal

mg/lmg/l

mV/pHmV/pH

cmcm

S/S/

cmcm

TDS

mbarmbar

Time

Baud

Day.Month No.

Ident

Year

Time

Baud

Day.Month No.

Ident

Year

pHpH

AutoCal TEC

ARAR

RCL

Sal

AutoCal DIN

Day.Month

Tref20

Cal

Ident

No.

Year

Time

Baud

TDS

Sal

Store

Tref25

mbar

mg/l

Lin

nLF

Auto

LoBat

ARng

mV/pH

AutoCal TEC

RCL

Sal

AutoCal DIN

Time

Day.Month

Sal

Store

No.

Ident

Tref20

Tref25

Year

Baud

mbar

mg/l

TDS

Lin

Cal

nLF

Auto

LoBat

ARng

AutoCal TEC

10 When the measured value is stable, AR disappears. The in-

strument displays the value of the slope (mV/pH) and the evaluation of the calibration in calibration range I.

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11 Press the <RUN/ENTER> key. The instrument displays the

value of the asymmetry in calibration range I.

Note

At this point, the AutoCal TEC calibration can be terminated with <M>. This corresponds to a two-point calibration. The instrument uses the slope and asymmetry of the calibration range I.

Operation handylab pH 11

Three-point

calibration

12 Press the <RUN/ENTER> key

to continue the three-point calibration. Ct3 appears on the display.

13 Thoroughly rinse the electrode with distilled water.

14 If necessary, enter the temperature of the third buffer solution

with <▲> <▼>.

15 Immerse the pH electrode in the third buffer solution.

16 Press the <RUN/ENTER> key.

The AR display indicator flashes. The electrode voltage (mV) or the buffer nominal value appears on the display. When the measured value is stable, AR disappears. The instrument displays the value of the slope (mV/pH) and the evaluation of the calibration in calibration range II.

17 Press the <RUN/ENTER> key.

The instrument displays the value of the asymmetry in calibration range II. The three-point calibration is completed.

18 To return to the measuring mode: Press the <M> key.

Note

You can prematurely terminate the three-point calibration by pressing <M>. The values of the two-point calibration for slope and asymmetry will then remain stored.

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handylab pH 11 Operation

AutoCal TEC

mV/pH

mol/L

Auto

Store

RCL

LoBat

CalError

ARng

ConCal

Time

Baud

Day.Month No.

Ident

Year

°F

TempError

mg/L

% ppm

ISE

°C

AutoCal DIN

4.3.2 AutoCal DIN

For this procedure, use two or three different standard buffer solutions according to DIN 19266 in ascending or descending order (type A, C, D or F with pH values at 25 °C of: 1.679 / 4.006 / 6.865 / 9.180).

Note

Skip the steps 2, 7 and 14 if you use a temperature sensor.

1 Press the <CAL> key repeatedly until the display Cd1 and the

function display AutoCal DIN appear. The sensor symbol displays the evaluation of the last calibration (or no sensor symbol in the delivery state or after the measurement parameter has been reset).

ONFIGURATION),

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2 If necessary, enter the temperature of the buffer solution with

<▲> <▼>.

3 Immerse the pH electrode in the first buffer solution.

4 Press the <RUN/ENTER> key.

The AR display indicator flashes. The electrode voltage (mV) or the buffer nominal value appears on the display. Example:

Operation handylab pH 11

AutoCal TEC

Cal

Tref20

Lin

Cal

Tref25

ARng

Tref25

Auto

ARng

Tref20

Lin

1/1/

RCL

OO UpHUpH SalSal

Store

Auto

LoBat

nLF

SalSal

mg/lmg/l

mV/pHmV/pH

cmcm

S/S/

cmcm

TDSTDS

mbarmbar

Time

Baud

Day.Month No.

Ident

Year

Time

Baud

Day.Month No.

Ident

Year

pHpH

ARAR

AutoCal DIN

AutoCal TEC

mV/pH

mol/L

Auto

Store

RCL

LoBat

CalError

ARng

ConCal

Time

Baud

Day.Month No.

Ident

Year

°F

TempError

mg/L

% ppm

ISE

°C

AutoCal DIN

5 When the measured value is stable, Cd2 appears.

Note

At this point, the AutoCal DIN calibration can be terminated with <M>. This corresponds to a single-point calibration. For this, the instrument uses the Nernst slope (-59.2 mV/pH at 25 °C) and determines the asymmetry of the electrode.

6 To continue the two-point calibration, thoroughly rinse the

electrode with deionized water.

7 If necessary, enter the temperature of the second buffer solu-

tion with <▲> <▼>.

8 Immerse the pH electrode in the second buffer solution.

9 Press the <RUN/ENTER> key.

The AR display indicator flashes. The electrode voltage (mV) or the buffer nominal value appears on the display. Example:

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handylab pH 11 Operation

AutoCal TEC

Cal

Tref20

Lin

Cal

Tref25

ARng

Tref25

Auto

ARng

Tref20

Lin

1/1/

RCL

OO UpHUpH SalSal

Store

Auto

LoBat

nLF

SalSal

mg/lmg/l

mV/pHmV/pH

cmcm

S/S/

cmcm

TDSTDS

mbarmbar

Time

Baud

Day.Month No.

Ident

Year

Time

Baud

Day.Month No.

Ident

Year

pHpH

ARAR

AutoCal DIN

AutoCal TEC

RCL

Sal

Time

Day.Month

Sal

Store

No.

Ident

Tref20

Tref25

Year

Baud

mbar

mg/l

TDS

Lin

Cal

nLF

Auto

LoBat

ARng

AutoCal DIN

10 When the measured value is stable, AR disappears. The in-

strument displays the value of the slope (mV/pH) and the evaluation of the calibration in calibration range I.

ba75366e04 01/2011

11 Press the <RUN/ENTER> key. The instrument displays the

value of the asymmetry in calibration range I.

Note

At this point, the AutoCal DIN calibration can be terminated with <M>. This corresponds to a two-point calibration. The instrument uses the slope and asymmetry of the calibration range I.

Operation handylab pH 11

Three-point

calibration

12 Press the <RUN/ENTER> key

to continue the three-point calibration. Cd3 appears on the display.

13 Thoroughly rinse the electrode with distilled water.

14 If necessary, enter the temperature of the third buffer solution

with <▲> <▼>.

15 Immerse the pH electrode in the third buffer solution.

16 Press the <RUN/ENTER> key.

17 Press the <RUN/ENTER> key.

The instrument displays the value of the asymmetry in calibration range II. The three-point calibration is completed.

18 To return to the measuring mode: Press the <M> key.

Note

You can prematurely terminate the three-point calibration by pressing <M>. The values of the two-point calibration for slope and asymmetry will then remain stored.

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handylab pH 11 Operation

4.3.3 ConCal

Single-point

calibration

Two-point

calibration

Use any buffer solution for this rapid method. The calibration will be the more exact the nearer the pH value of the buffer solution is to that of the test sample.

For this procedure, use two buffer solutions:

z pH 7.0 ± 0.5

z any other buffer solution

Note

Skip the steps 2 and 9 if you use a pH electrode with a temperature sensor.

1 Press the <CAL> key repeatedly until the display ASY and the

function display ConCal appears. The sensor symbol displays the evaluation of the last calibration (or no sensor symbol in the delivery state or after the measurement parameter has been reset).

ba75366e04 01/2011

2 If necessary, enter the temperature of the first buffer solution

with <▲> <▼>.

3 Immerse the pH electrode in the first buffer solution (pH 7.0 ±

0.5 in two-point calibration).

4 Press the <RUN/ENTER> key.

The measured pH value appears on the display.

5 Set the measured value to the nominal pH value of the buffer

solution (at the current temperature) with <▲> <▼>.

6 Press the <RUN/ENTER> key. The value of the asymmetry

(mV) and the sensor symbol appear on the display.

7 Press the <RUN/ENTER> key. SLO appears on the display.

Note At this point, the ConCal calibration can be broken off with <M>. This corre-

Operation handylab pH 11

AutoCal DIN

AutoCal TEC

mV/pH

mol/L

Auto

Store

RCL

LoBat

CalError

ARng

Time

Baud

Day.Month No.

Ident

Year

°F

TempError

mg/L

% ppm

ISE

°C

ConCal

sponds to a single-point calibration. For this, the instrument uses the Nernst slope (-59.2 mV/pH at 25 °C) and the specified asymmetry of the electrode.

8 To continue the two-point calibration, thoroughly rinse the

electrode with deionized water.

9 If necessary, enter the temperature of the second buffer solu-

tion with <▲> <▼>.

10 Immerse the pH electrode in the second buffer solution.

11 Press the <RUN/ENTER> key. The second pH value appears

on the display.

12 Set the measured value to the nominal pH value of the buffer

solution (at the current temperature) with <▲> <▼>.

13 When the measured value is stable, press the <RUN/ENTER>

key. The value of the slope (mV/pH) appears on the display. The probe symbol shows the evaluation of the current calibration.

14 Press the <RUN/ENTER> key. The value of the asymmetry

(mV) appears on the display.

ba75366e04 01/2011

handylab pH 11 Operation

15 To return to the measuring mode: Press the <M> key.

ba75366e04 01/2011

Operation handylab pH 11

4.4 Configuration

You can adapt the measuring instrument to your individual requirements. To do this, the following parameters can be changed (the status on delivery is marked in bold):

Display during the pH calibration

pH resolution 0.01 or 0.001

Note

You can leave the configuration menu at any time with <M> . The parameters that have already been changed are stored.

1 Switch off the measuring instrument.

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

Buffer nominal value, or current electrode voltage

Display during the

pH calibration

3 Press the <ON/OFF> key.

The display test appears briefly on the display. CAL diSP appears on the display.

4 Select the required display during the pH calibration with

<▲> <▼>.

mV: Display of the current electrode voltage /pH: Display of the buffer nominal value.

5 Confirm with <RUN/ENTER>.

The measuring instrument automatically switches to the pH measuring mode.

ba75366e04 01/2011

handylab pH 11 Operation

Setting the

resolution

1 Press the <RUN/ENTER> key and hold it down.

2 Press the <M> key.

The measured values are displayed with a high resolution, e.g. pH = 4.012.

3 Press the <RUN/ENTER> and <M> keys once more.

The measured values are displayed with a low resolution, e.g. pH = 4.01.

ba75366e04 01/2011

Operation handylab pH 11

Tref25

Tref20

AutoCal TEC

RCL

LoBat

Cal

ARng

Lin

nLF

Store

Sal

TDS

Sal

Auto

mbar

mg/l

mV/pH

AutoCal DIN

Time

Baud

Day.Month No.

Ident

Year

4.5 Reset

You can reset (initialize) the measurement parameters and the configuration parameters separately from one another.

Measurement

parameters

Resetting the

measuring

parameters

The following measured parameters (pH InI) are reset to the default condi- tion:

Measuring mode pH

Asymmetry 0 mV

Slope -59.16 mV/pH

Calibration procedures AutoCal TEC

Temperature, manual 25 °C

Resolution (pH display) 0.01 (low resolution)

Display during the pH calibration

Note

The calibration data gets lost when the measuring parameters are reset. Recalibrate after performing a reset.

1 Press the <RUN/ENTER> key and hold it down.

2 Press the <CAL> key.

Buffer nominal value

3 Using <▲> <▼>, switch between no and YES.

YES: Resetting the measuring parameters no: Retaining settings.

4 Confirm with <RUN/ENTER>.

The measuring instrument automatically switches to the pH measuring mode.

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handylab pH 11 Maintenance, cleaning, disposal

5 Maintenance, cleaning, disposal

5.1 Maintenance

The measuring instrument is almost maintenance-free. The only maintenance task is replacing the batteries. LoBat indicates that the batteries should be changed. The batteries are then largely depleted.

Replacing the

batteries

1 Open the housing after the instrument has been switched off:

– Undo the four screws on the underside of the instrument

– Pull down the lower cover (1).

ba75366e04 01/2011

2 If necessary, take the four depleted batteries (2) out of the bat-

tery compartment.

3 Place four new batteries (type Mignon AA) in the battery com-

partment.

4 Close the lower cover (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.

Maintenance, cleaning, disposal handylab pH 11

Note

For the maintenance of the electrodes, follow the corresponding operating manual.

5.2 Cleaning

Occasionally wipe the outside of the measuring instrument with a damp, lintfree cloth. Disinfect the housing with isopropanol as required.

Caution

The housing is made of a synthetic material (ABS). Thus, avoid contact with acetone and similar detergents that contain solvents. Remove any splashes immediately.

5.3 Disposal

Packing This measuring instrument is sent out in a protective transport packing.

We recommend: Keep the packing material. The original packing protects the instrument against damage during transport.

Batteries This note refers to the battery regulation that applies in the Federal Republic

of Germany. We would ask end-consumers in other countries to follow their local statutory provisions.

Note

This instrument contains batteries. Batteries that have been removed must only be disposed of at the recycling facility set up for this purpose or via the retail outlet. It is illegal to dispose of them in household refuse.

Measuring

instrument

Dispose of the measuring instrument as electronic waste at an appropriate collection point. It is illegal to dispose of the instrument in household refuse.

ba75366e04 01/2011

handylab pH 11 What to do if...

6 What to do if...

Error message 0FL

Cause Remedy

pH electrode:

– Not connected – Connect electrode

Error message E3

– Air bubble in front of the

– Remove air bubble

diaphragm

– Air in the diaphragm – Extract air or

moisten diaphragm

– Cable broken – Replace electrode

– Gel electrolyte dried out – Replace electrode

Cause Remedy

Electrode

– Diaphragm contaminated – Clean diaphragm

– Membrane contaminated – Clean membrane

– Moisture in the plug – Dry plug

– Electrolyte out of date – Replenish electrolyte or

replace electrode

– Electrode worn out – Replace electrode

ba75366e04 01/2011

– Electrode broken – Replace electrode

Measuring instrument:

– Incorrect calibration procedure – Select correct procedure

– Incorrect solution temperature

– Set up correct temperature

(without temperature sensor)

– Socket damp – Dry socket

What to do if... handylab pH 11

Buffer solutions

– Incorrect buffer solutions – Change calibration procedure

– Buffer solutions too old – Use only once.

Note the shelf life

– Buffer solutions depleted – Change solutions

No stable mea-

Cause Remedy

sured value

pH electrode:

– Diaphragm contaminated – Clean diaphragm

– Membrane contaminated – Clean membrane

Test sample:

LoBat display

– pH value not stable – Measure with air excluded if

necessary

– Temperature not stable – Adjust temperature if

necessary

Electrode + test sample:

– Conductivity too low – Use suitable electrode

– Temperature too high – Use suitable electrode

– Organic liquids – Use suitable electrode

Cause Remedy

– Batteries almost empty – Replace batteries

(see section 5.1 MAINTENANCE)

ba75366e04 01/2011

handylab pH 11 What to do if...

Obviously incor-

rect

measured values

Instrument does not react to key-

stroke

Cause Remedy

pH electrode:

– pH electrode unsuitable – Use suitable electrode

– Temperature difference

between buffer and test

– Adjust temperature of buffers

or test samples

sample too high

– Measurement procedure not

– Follow special procedure

suitable

Cause Remedy

– Operating condition

undefined or EMC load unallowed

– Processor reset:

Press the <CAL> and <ON/OFF> keys at the same time and release them again. The software version is displayed.

Display to

Cause Remedy

– Time-out of the interface – Check the instrument that is

connected

ba75366e04 01/2011

What to do if... handylab pH 11

ba75366e04 01/2011

handylab pH 11 Lists

7Lists

This chapter provides additional information and orientation aids.

Abbreviations The list of abbreviations explains the indicators and the abbreviations that ap-

pear on the display and in the manual.

Specialist terms The glossary briefly explains the meaning of the specialist terms. However,

terms that should already be familiar to the target group are not described here.

Index The index will help you to find the topics that you are looking for.

ba75366e04 01/2011

Lists handylab pH 11

Abbreviations

AR AutoRead (drift control)

ARng Automatic range switching

Measuring instrument measures with highest resolution

ASY Asymmetry

AutoCal DIN Automatic pH calibration with buffer solutions prepared

according to DIN 19 266

AutoCal TEC Automatic pH calibration with SI Analytics technical buf-

fer solutions according to DIN 19267

°C Temperature unit, degrees Celsius

Cal Calibration

Cd... Display indicator during calibration for pH measure-

ments. Indicates the selection of the buffer data record for buffer solutions prepared according to DIN 19 266

ConCal Conventional single-point or two-point calibration for pH

measurements

Ct... Display indicator during calibration for pH measure-

ments. Indicates the selection of the buffer data records for SI Analytics technical buffer solutions

InI Initialization

Resets individual basic functions to the status they had on delivery

LoBat Batteries almost empty(Low Battery)

mV Voltage unit

mV/pH Unit of the electrode slope (internat. mV)

OFL Display range exceeded (Overflow)

pH pH value

S Slope (internat. k)

SELV Safety Extra Low Voltage

SLO Slope setting on calibration

TP Temperature measurement active (Temperature Probe)

ASY

Asymmetry

ba75366e04 01/2011

handylab pH 11 Lists

Glossary

Adjusting To manipulate a measuring system so that the relevant value (e. g. the

displayed value) differs as little as possible from the correct value or a value that is regarded as correct, or that the difference remains within the tolerance.

Asymmetry Designation for the offset potential of a pH electrode. It is the measur-

able potential of a symmetrical electrode, the membrane of which is immersed in a solution with the pH of the nominal electrode zero point (electrodes: pH = 7).

AutoRange Name of the automatic selection of the measuring range.

AutoRead Name for a function to check the stability of the measured value.

Calibration Comparing the value from a measuring system (e. g. the displayed

value) to the correct value or a value that is regarded as correct. Often, this expression is also used when the measuring system is adjusted at the same time (see adjusting).

Diaphragm The junction is a porous body in the housing wall of reference elec-

trodes or electrolyte bridges. It forms the electrical contact between two solutions and makes electrolyte exchange more difficult. The expression, junction, is also used for ground or junction-less transitions.

Electrode zero point The zero point of a pH electrode is the pH value at which the electro-

motive force of the pH electrode at a specified temperature is zero. Normally, this is at 25 °C.

Electromotive force of

an electrode

The electromotive force U of the electrode is the measurable electromotive force of an electrode in a solution. It equals the sum of all the galvanic voltages of the electrode. Its dependency on the pH results in the electrode function which is characterized by the parameters, slope and zero point.

Measured parameter The measured parameter is the physical dimension determined by

measuring, e. g. pH, conductivity or D. O. concentration.

Measured value The measured value is the special value of a measured parameter to

be determined. It is given as a combination of the numerical value and unit (e. g. 3 m; 0.5 s; 5.2 A; 373.15 K).

Measuring system The measuring system comprises all the devices used for measuring,

e. g. measuring instrument and probe. In addition, there is the cable and possibly an amplifier, terminal strip and armature.

Molality Molality is the quantity (in Mol) of a dissolved substance in 1000 g sol-

MultiCal

ba75366e04 01/2011

vent.

Name stating that a measuring instrument provides several calibration procedures.

Lists handylab pH 11

Offset potential The measurable potential of a symmetrical electrode, the membrane

of which is immersed in a solution with the pH of the nominal electrode zero point. The asymmetry is part of the offset potential.

ORP voltage The ORP is caused by oxidizing or reducing substances dissolved in

water if these substances become effective on an electrode surface (e. g. a gold or platinum surface).

pH value The pH is a measure of the acidic or basic effect of an aqueous solu-

tion. It corresponds to the negative decadic logarithm of the molal hydrogen ions activity divided by the unit of the molality. The practical pH value is the value of a pH measurement.

Potentiometry Name of a measuring technique. The signal (depending on the mea-

sured parameter) of the electrode is the electrical potential. The electrical current remains constant.

Reset Restoring the original condition of all settings of a measuring system.

Resolution Smallest difference between two measured values that can be dis-

played by a measuring instrument.

Slope The slope of a linear calibration function.

Standard solution The standard solution is a solution where the measured value is

known by definition. It is used to calibrate a measuring system.

Test sample Designation of the sample ready to be measured. Normally, a test

sample is made by processing the original sample. The test sample and original sample are identical if the test sample was not processed.

ba75366e04 01/2011

handylab pH 11 Index

Index

Asymmetry 19 Authorized use 11 AutoCal DIN 19, 25 AutoCal TEC 19, 21 AutoRead 17

Calibration evaluation 20 Calibration procedures 19 ConCal 19, 29

Default condition 34 Display 7 Displaying calibration data

Drift control 17

Energy saving feature 15

Safety 11 Safety precautions 11 Scope of delivery 13 Setting the resolution 33 Setting the resolution (pH) 17 Single-point calibration 19 Single-point calibration (pH)

22, 23, 26, 27, 30

Slope 19

Temperature sensor 16 Three-point calibration 19

AutoCal DIN 28 AutoCal TEC 24

Two-point calibration 19

ConCal 29

Two-point calibration (pH)

19, 22, 23, 26, 27, 30

Initialization 34

Keys 6

LoBat 38

Measuring ranges

pH/ORP

Operating safety 12 ORP electrode 18 ORP voltage 18

Replacing the batteries 35 Reset 34

Index handylab pH 11

SI Analytics GmbH Postfach 2443 D-55014 Mainz Hattenbergstr. 10 D-55122 Mainz

Telefon +49 (0) 61 31/66 5111 Telefax +49 (0) 61 31/66 5001 Email: support@

si-analytics.com

Internet: www.si-analytics.com

Xylem handylab pH 11 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Overview

1.1 Keypad

1.2 Display

1.3 Jack field

1.4 Technical Data

2Safety

2.1 Authorized use

2.2 General safety instructions

3 Commissioning

3.1 Scope of delivery

4 Operation

4.1 Switching on the measuring instrument

4.2 Measuring

4.2.1 General information

4.2.2 Measuring the pH value

4.2.3 Measuring the ORP voltage

4.3 Calibrating

4.3.1 AutoCal TEC

4.3.2 AutoCal DIN

4.3.3 ConCal

4.4 Configuration

4.5 Reset

5 Maintenance, cleaning, disposal

5.1 Maintenance

5.2 Cleaning

5.3 Disposal

6 What to do if...

7Lists