SCHOTT handylab pH 11 Operating Manual
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SCHOTT handylab pH 11 Operating Manual

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Operating manual
handylab pH 11
pH Meter
ba75366d04
01/2011

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  • Page 1 Operating manual handylab pH 11 pH Meter ba75366d04 01/2011...
  • Page 2 handylab LF 12 Accuracy when The use of advanced technology and the high quality standard of our going to press instruments are the result of continuous development. This may result in differences between this operating manual and your instrument. Al- so, we cannot guarantee that there are absolutely no errors in this man- ual.

  • Page 3: Table Of Contents

    List of contents handylab pH 11 - List of contents Overview ......... 5 Keypad .
  • Page 4 List of contents handylab pH 11 ba75366e04 01/2011...

  • Page 5: Overview

    11 Overview 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, re- liability and measuring certainty for all applications.

  • Page 6: Keypad

    Overview handylab pH 11 Keypad RUN/ENTER Key functions Select the measuring mode <M>: – pH value – ORP voltage Switch measuring instrument on/off <ON/OFF> Calibration of the current measured variable <CAL> Activate/deactivate the AutoRead function <AR> Select the measuring mode Increase values, scroll <▲>...

  • Page 7: Display

    11 Overview Display Status display Sensor symbol mol/L mV/pH % ppm Meas. value display mg/L °F Time Baud Day.Month No. Function and °C Year Ident temperature display TempError CalError AutoCal DIN Auto Store LoBat ARng AR AutoCal TEC...

  • Page 8: Technical Data

    Overview handylab pH 11 Technical Data Dimensions Length [mm] and weight Width [mm] Height [mm] Weight [kg] Approx. 0.3 Mechanical Type of protection IP 66 structure Electrical safety Protective class Test certificates cETLus, CE Ambient Storage - 25 °C ... + 65 °C...
  • Page 9 11 Overview Correction Temperature input function Manually [°C] - 20 ... + 130 Power supply Batteries 4 x 1.5 V alkali-manganese batteries, Type Operational life Approx. 5000 operating hours Applicable EC guideline 2004/108/EC guidelines and EN 61326-1 norms...
  • Page 10 Overview handylab pH 11 ba75366e04 01/2011...

  • Page 11: Safety

    11 Safety Safety This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the pH meter. Conse- quently, 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.

  • Page 12: General Safety Instructions

    Safety handylab pH 11 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 ECHNICAL It left the factory in a safe and secure technical condition.

  • Page 13: Commissioning

    11 Commissioning Commissioning Scope of delivery Handheld meter, handylab pH 11 Operating manual and short operating manual 4 batteries, 1.5 V Mignon type AA (in the instrument) ba75366e04 01/2011...
  • Page 14 Commissioning handylab pH 11 ba75366e04 01/2011...

  • Page 15: Operation

    11 Operation Operation Switching on the measuring instrument Press the <ON/OFF> key. The display test appears briefly on the display. Subsequently, the slope and asymmetry used appear for ap- prox. one second one after the other. In addition, the calibration...

  • Page 16: Measuring

    Operation handylab pH 11 Measuring 4.2.1 General information You can measure the following variables: pH value ORP voltage Preparatory Perform the following preparatory activities when you want to measure: activities Connect the electrode to the measuring instrument. Adjust the temperature of the buffer solutions or test solutions, or measure the current temperature, if you measure without a temperature sensor.

  • Page 17: Measuring The Ph Value

    11 Operation 4.2.2 Measuring the pH value Perform the preparatory activities according to section 4.2.1. Immerse the pH electrode in the test sample. Press the <M> key until pH appears on the status display. The pH value appears on the display.

  • Page 18: Measuring The Orp Voltage

    Operation handylab pH 11 Note The current AutoRead measurement can be terminated at any time (accept- ing 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 in- strument can measure the ORP voltage (U) of a solution.

  • Page 19: Calibrating

    11 Operation 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.
  • Page 20 Operation handylab pH 11 Displaying Each time the instrument is switched on, the calibration data are shown on calibration data the display for a short time (see section 4.1 S WITCHING ON THE MEASURING IN ). In order to view the calibration data, switch the measuring instru- STRUMENT ment off and switch it on again.

  • Page 21: Autocal Tec

    11 Operation 4.3.1 AutoCal TEC For this procedure, use any two or three technical buffer solutions in ascend- ing 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.
  • Page 22 Operation handylab pH 11 mV/pH mV/pH mg/l mg/l mbar mbar 1/ cm Baud Baud Time Time ° ° Day.Month No. Day.Month No. ° ° Year Ident Year Ident Tref25 Tref20 AutoCal DIN Auto Store Tref25 Tref20 AutoCal DIN Auto Store...
  • Page 23 11 Operation mV/pH mV/pH mg/l mg/l mbar mbar 1/ cm Baud Baud Time Time ° ° Day.Month No. Day.Month No. ° ° Year Ident Year Ident Tref25 Tref20 AutoCal DIN Auto Store Tref25 Tref20 AutoCal DIN Auto Store...
  • Page 24 Operation handylab pH 11 Three-point Press the <RUN/ENTER> key calibration to continue the three-point calibration. Ct3 appears on the display. Thoroughly rinse the electrode with distilled water. If necessary, enter the temperature of the third buffer solution with <▲> <▼>.

  • Page 25: Autocal Din

    11 Operation 4.3.2 AutoCal DIN For this procedure, use two or three different standard buffer solutions ac- cording 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).
  • Page 26 Operation handylab pH 11 mV/pH mV/pH mg/l mg/l mbar mbar 1/ cm Time Baud Time Baud ° ° Day.Month No. Day.Month No. ° ° Year Ident Year Ident Tref25 Tref20 AutoCal DIN Auto Store Tref25 Tref20 AutoCal DIN Auto Store...
  • Page 27 11 Operation mV/pH mV/pH mg/l mg/l mbar mbar 1/ cm Time Baud Time Baud ° ° Day.Month No. Day.Month No. ° ° Year Ident Year Ident Tref25 Tref20 AutoCal DIN Auto Store Tref25 Tref20 AutoCal DIN Auto Store...
  • Page 28 Operation handylab pH 11 Three-point Press the <RUN/ENTER> key calibration to continue the three-point calibration. Cd3 appears on the display. Thoroughly rinse the electrode with distilled water. If necessary, enter the temperature of the third buffer solution with <▲> <▼>.

  • Page 29: Concal

    11 Operation 4.3.3 ConCal Single-point Use any buffer solution for this rapid method. calibration The calibration will be the more exact the nearer the pH value of the buffer solution is to that of the test sample. Two-point...
  • Page 30 Operation handylab pH 11 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 elec- trode. mol/L mV/pH % ppm mg/L °F Baud Time Day.Month No.
  • Page 31 11 Operation To return to the measuring mode: Press the <M> key. ba75366e04 01/2011...

  • Page 32: Configuration

    Operation handylab pH 11 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 Buffer nominal value, or current...
  • Page 33 11 Operation Setting the Press the <RUN/ENTER> key and hold it down. resolution Press the <M> key. The measured values are displayed with a high resolution, e.g. pH = 4.012. Press the <RUN/ENTER> and <M> keys once more.

  • Page 34: Reset

    Operation handylab pH 11 Reset You can reset (initialize) the measurement parameters and the configuration parameters separately from one another. Measurement The following measured parameters (pH InI) are reset to the default condi- parameters tion: Measuring mode Asymmetry 0 mV Slope -59.16 mV/pH...

  • Page 35: Maintenance, Cleaning, Disposal

    11 Maintenance, cleaning, disposal Maintenance, cleaning, disposal 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...

  • Page 36: Cleaning

    Maintenance, cleaning, disposal handylab pH 11 Note For the maintenance of the electrodes, follow the corresponding operating manual. Cleaning Occasionally wipe the outside of the measuring instrument with a damp, lint- free cloth. Disinfect the housing with isopropanol as required.

  • Page 37: What To Do If

    11 What to do if... What to do if... Error message 0FL Cause Remedy pH electrode: – Not connected – Connect electrode – Air bubble in front of the – Remove air bubble diaphragm – Air in the diaphragm –...
  • Page 38 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-...
  • Page 39 11 What to do if... Obviously incor- Cause Remedy rect pH electrode: measured values – pH electrode unsuitable – Use suitable electrode – Temperature difference – Adjust temperature of buffers between buffer and test or test samples sample too high –...
  • Page 40 What to do if... handylab pH 11 ba75366e04 01/2011...

  • Page 41: Lists

    11 Lists Lists 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.
  • Page 42 Lists handylab pH 11 Abbreviations AutoRead (drift control) ARng Automatic range switching Measuring instrument measures with highest resolution 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...
  • Page 43 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 with- in the tolerance.
  • Page 44 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...
  • Page 45 11 Index Index Asymmetry Safety Authorized use Safety precautions 19, 25 AutoCal DIN Scope of delivery 19, 21 AutoCal TEC Setting the resolution AutoRead Setting the resolution (pH) Single-point calibration Single-point calibration (pH) 22, 23, 26, 27, 30...
  • Page 46 Index handylab pH 11...
  • Page 48 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...

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