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wtw Cond 3300i Operating Manual

Handheld meter conductivity measuring instrument
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Operating manual
Handheld meter
Cond 3300i/3400i
Conductivity measuring instrument
ba75684e01
01/2007

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Summary of Contents for wtw Cond 3300i

  • Page 1 Operating manual Handheld meter Cond 3300i/3400i Conductivity measuring instrument ba75684e01 01/2007...
  • Page 2 © Copyright Weilheim 2007, WTW GmbH Reproduction in whole - or even in part - is prohibited without the ex- press written permission of WTW GmbH, Weilheim. Printed in Germany.

  • Page 3: Table Of Contents

    Cond 3300i/3400i List of contents Overview ........5 SETs of equipment .
  • Page 4 List of contents Cond 3300i/3400i What to do if........51 Technical data .

  • Page 5: Overview

    Sample display Jack field Note If you need further information or application notes, you can obtain the following material from WTW: Application reports Primers Safety datasheets. You will find information on available literature in the WTW catalog or via the Internet.

  • Page 6: Sets Of Equipment

    SETs of equipment The measuring instrument is also available as part of individual SETs of equipment. You will find additional information on this and other ac- cessories in the WTW catalog or via the Internet. Set (sample configuration): Measuring instrument, Cond 3300i/3400i Stand –...

  • Page 7: Keypad

    Cond 3300i/3400i Overview Keypad RUN/ENTER Key functions Select the measuring mode <M>: – Conductivity/Specific resistance – Salinity – Total dissolved solids (TDS) Save a measured value <STO> Switch measuring instrument on/off <ON/OFF> – Determine or set up the cell constant –...

  • Page 8: Display

    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 WTW measuring cells - fulfill these conditions.

  • Page 9: Safety

    Cond 3300i/3400i Safety Safety This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the conduc- tivity measuring instrument. Consequently, all responsible personnel must read this operating manual before working with the measuring system.

  • Page 10: General Safety Instructions

    Safety Cond 3300i/3400i General safety instructions This instrument is built and inspected according to the relevant guide- lines and norms for electronic measuring instruments (see chapter 7 ECHNICAL DATA It left the factory in a safe and secure technical condition.

  • Page 11: Commissioning

    Cond 3300i/3400i Commissioning Commissioning Scope of delivery Handheld meter, Cond 3300i or 3400i Plug-in power supply, optional (3400i only) Operating manual and short operating manual 4 batteries, 1.5 V Mignon type AA (in the instrument) Initial commissioning Perform the following activities:...
  • Page 12 7 T ECHNICAL DATA Plug the jack (1) into the socket (2) of the measuring instru- ment. Connect the original WTW plug-in power supply (3) to an easily accessible mains socket. Note You can also measure without the plug-in power supply.

  • Page 13: Operation

    Cond 3300i/3400i Operation Operation Switching on the measuring instrument Connect a conductivity measuring cell to the measuring instru- ment. 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.

  • Page 14: Measuring

    Temperature sensor Only carry out measurements with a temperature sensor. The temper- ature sensor is shown on the display by TP. The WTW TetraCon 325 conductivity measuring cell has a temperature sensor integrated in it. Note The conductivity measuring instrument automatically recognizes the type of the temperature sensor used.

  • Page 15: Conductivity / Specific Resistance

    Cond 3300i/3400i Operation 4.2.2 Conductivity / Specific resistance Note You can display measured values in the units µS/cm (conductivity) or MΩcm (specific resistance). This setting is described in section 4.6 C ONFIGURATION Thus, you can carry out conductivity measurements or measurements of the specific resistance: Perform the preparatory activities according to section 4.2.1.

  • Page 16: Salinity

    Operation Cond 3300i/3400i 4.2.3 Salinity You can measure the salinity as follows: Perform the preparatory activities according to section 4.2.1. Immerse the conductivity measuring cell in the test sample. Press the <M> key until Sal appears on the status display. The salinity value appears on the display.
  • Page 17 Cond 3300i/3400i Operation Using <L> <M>, set the TDS factor (0.40 ... 1.00). (The TDS factor has to be determined by a comparison mea- surement before.) Wait for a stable measured value. AutoRead AR The AutoRead function (drift control) checks the stability of the mea- (drift control) surement signal.
  • Page 18 Operation Cond 3300i/3400i Note The current AutoRead measurement can be terminated at any time (accepting the current value) by pressing <RUN/ENTER>.

  • Page 19: Determining/Setting Up The Cell Constant [C]

    Cond 3300i/3400i Operation Determining/setting up the cell constant [C] Why determine/set up Aging slightly changes the characteristics of the cell, e. g. by coatings. the cell constant? As a result, an inexact measured value is displayed. The original char- acteristics of the cell can often be restored by cleaning the cell. Calibra- tion determines the current cell constant and stores it in the instrument.
  • Page 20 Operation Cond 3300i/3400i Calibration evaluation After the calibration, the measuring instrument automatically evaluates the current status of the calibration. The evaluation appears on the dis- play. Display Cell constant [cm 0.450 ... 0.500 cm 0.800 ... 1.200 cm outside the ranges 0.450 ...

  • Page 21: Determining The Cell Constant (Calibrating In The Control Standard)

    Cond 3300i/3400i Operation 4.3.1 Determining the cell constant (calibrating in the control standard) Note This method of automatically determining the cell constant by calibra- tion with the 0.01 mol/l KCL standard solution can only be used for measuring cells with cell constants in the range 0.450 ... 0.500 cm 0.800 ...
  • Page 22 Operation Cond 3300i/3400i Press the <RUN/ENTER> key. – If no temperature sensor is connected, enter the current temperature of the solution with <L> <M> and confirm with <RUN/ENTER>. – If a temperature sensor is connected, the AR measurement to determine the cell constant starts.

  • Page 23: Setting The Cell Constant Manually

    Cond 3300i/3400i Operation 4.3.2 Setting the cell constant manually Note The cell constant to be set must either be taken from the operating manual of the measuring cell or is printed on the measuring cell. You can set the cell constant manually as follows: Range Press the <CAL>...
  • Page 24 Operation Cond 3300i/3400i To return to the measuring mode: Press the <M> key. From now on, the cell constant 0.614 cm will be used. Range Press the <CAL> key repeatedly until CELL appears on the 0.090 ... 0.110 cm display.
  • Page 25 Cond 3300i/3400i Operation To return to the measuring mode: Press the <M> key. Now this setting is accepted for measuring. Setting the fixed cell You can set the fixed value 0.010 cm for the cell constant as follows: constant 0.010 cm Press the <CAL>...

  • Page 26: Setting The Temperature Compensation Tc

    Operation Cond 3300i/3400i 4.3.3 Setting the temperature compensation TC The calculation of the temperature compensation is based on the pre- set reference temperature, Tref 20 or Tref 25 (see section 4.6 C ONFIGURATION You can select one of the following temperature compensation meth-...
  • Page 27 Cond 3300i/3400i Operation Selecting the nonlinear You can select the nonlinear temperature compensation as follows: temperature compensa- tion Press the <CAL> key repeatedly until tc appears on the dis- play. mV/pH % mg/l mbar Time Baud ° Day.Month No. °...
  • Page 28 Operation Cond 3300i/3400i Selecting the linear You can select the linear temperature compensation as follows: temperature compensation Press the <CAL> key repeatedly until tc appears on the dis- play. mV/pH % mg/l mbar Time Baud ° Day.Month No. ° Year...
  • Page 29 Cond 3300i/3400i Operation Switching the tempera- You can switch off the temperature compensation as follows: ture compensation off Press the <CAL> key repeatedly until tc appears on the dis- play. mV/pH % mg/l mbar Time Baud ° Day.Month No. °...

  • Page 30: Saving

    Operation Cond 3300i/3400i Saving The measuring instrument has an internal data memory. It can store up to 800 data records. A complete data record consists of: Storage location Date/time Measured value Temperature Temperature measuring procedure ID number You can transmit measured values (data records) to the data storage...
  • Page 31 Cond 3300i/3400i Operation mV/pH % mg/l mbar Time Baud ° Day.Month ° Year Ident Tref25 Tref20 AutoCal DIN Auto Store ARng LoBat AutoCal TEC Using <L> <M>, enter the required ID number (1 ... 999). Confirm with <RUN/ENTER>. The instrument changes to the measuring mode.

  • Page 32: Saving Automatically

    Operation Cond 3300i/3400i 4.4.2 Saving automatically The save interval (Int 1) determines the chronological interval between automatic save processes. After the fixed interval has expired, the current data record is transmit- ted to the storage and to the interface. Setting the save The default setting for the save interval (Int 1) is OFF.
  • Page 33 Cond 3300i/3400i Operation As soon as all of the 800 storage locations are occupied, AutoStore is terminated (Int 1 = OFF). If there are not enough storage locations available for your measurements: – Output and backup the data storage (see page 34) and –...

  • Page 34: Outputting The Data Storage

    Operation Cond 3300i/3400i 4.4.3 Outputting the data storage You can output the contents of the data storage: Stored data on the display Calibration data on the display Stored data on the serial interface (only Cond 3400i) Calibration protocol to the interface (only Cond 3400i) Outputting stored data Press the <RCL>...
  • Page 35 Cond 3300i/3400i Operation Note If you want to search for a certain element (e.g. date), proceed as fol- lows: Using <RUN/ENTER>, select the element (e.g. date). Press <L> or <M> repeatedly until the required date appears on the display. After approx. 2 s the temperature of the displayed measured value appears.
  • Page 36 Operation Cond 3300i/3400i Sample printout: Device No.: 99990000 01.01.99 00:04 2.40 mS/cm 25 °C Tman Tref25 C = 0.475 1/cm Ident : 1 10.01.99 10:09 2.40 mS/cm 25.3 °C Tauto Tref25 C = 0.475 1/cm Ident : 1 12.01.99 01:48 2.40 mS/cm...
  • Page 37 Cond 3300i/3400i Operation Using <M> or <RUN/ENTER>, you can switch back to the measuring mode. Outputting the calibra- Press the <RCL> key repeatedly until CAL appears on the dis- tion protocol on the play. interface (only Cond 3400i) mol/L mV/pH...

  • Page 38: Clearing The Memory

    Operation Cond 3300i/3400i 4.4.4 Clearing the memory With this function, you can delete stored data records. 800 storage lo- cations will then be available again. Note The Clear memory function only appears when there are data records stored in the memory. Otherwise, the measuring instrument automati- cally switches to the measuring mode.

  • Page 39: Transmitting Data (Only Cond 3400I)

    Cond 3300i/3400i Operation Transmitting data (only Cond 3400i) You have the following possibilities of transmitting data: One of the following options: – With the AutoStore function (page 32), measured values are periodically saved internally (save interval Int 1) and output on the interface.
  • Page 40 Operation Cond 3300i/3400i Setting the The default setting for the interval is OFF. Data transmission To start the data transmission, set an interval (5 s, 10 s, 30 s, 1 min, interval 5 min, 10 min, 15 min, 30 min, 60 min): Press the <RUN/ENTER>...

  • Page 41: Recorder (Analog Output, Cond 3400I)

    Cond 3300i/3400i Operation 4.5.2 Recorder (analog output, Cond 3400i) You can transmit data to a recorder via the analog output. Connect the analog output to the recorder via the AK323 interface cable. The data output automatically switches to Recorder output.

  • Page 42: Pc/External Printer (Rs 232 Interface, Cond 3400I)

    Operation Cond 3300i/3400i 4.5.3 PC/external printer (RS 232 interface, Cond 3400i) Via the RS 232 interface, you can transmit the data to a PC or an ex- ternal printer. Use the AK340/B (PC) or AK325/S (ext. printer) cable to connect the interface to the instruments.

  • Page 43: Configuration

    Cond 3300i/3400i Operation Configuration You can adapt the measuring instrument to your individual require- ments. To do this, the following parameters can be changed (the status on delivery is marked in bold): Baud rate 1200, 2400, 4800, 9600 Calibration interval (Int 3) 1 ...
  • Page 44 Operation Cond 3300i/3400i Confirm with <RUN/ENTER>. Int 3 appears on the display. TDS UpH mV/pH Calibration interval mg/l mbar 1/ cm Time Baud ° Day.Month No. ° Year Ident Tref25 Tref20 AutoCal DIN Auto Store ARng LoBat AutoCal TEC Set the required interval in days with <L> <M>.
  • Page 45 Cond 3300i/3400i Operation Reference temperature TDS UpH mV/pH % mg/l mbar M cm Time Baud ° Day.Month No. ° Year Ident Tref25 Tref20 AutoCal DIN Auto Store ARng LoBat nLF AutoCal TEC Using <L> <M>, switch between t25 and t20.
  • Page 46 Operation Cond 3300i/3400i Confirm with <RUN/ENTER>. The date (month) flashes in the display. Set the current month with <L> <M>. Confirm with <RUN/ENTER>. The year appears on the display. Set the current year with <L> <M>. Confirm with <RUN/ENTER>. The hours flash on the display.

  • Page 47: Reset

    Cond 3300i/3400i Operation Reset You can reset (initialize) the measurement parameters and the config- uration parameters separately from one another. Measurement The following measured parameters ( InI) are reset to the default parameters condition: Measuring mode Cell constant 0.475 cm (calibrated) 0.475 cm...
  • Page 48 Operation Cond 3300i/3400i TDS UpH mV/pH % mg/l mbar Time Baud ° Day.Month No. ° Year Ident Tref25 Tref20 AutoCal DIN Auto Store ARng LoBat AutoCal TEC Using <L> <M>, switch between no and YES. YES: Resetting the measuring parameters no: Retaining settings.

  • Page 49: Maintenance, Cleaning, Disposal

    Cond 3300i/3400i 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 batteries Open the housing after the instrument has been switched off: –...

  • Page 50: Cleaning

    Maintenance, cleaning, disposal Cond 3300i/3400i Note For the maintenance of the measuring cells, 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 re- quired.
  • Page 51 Cond 3300i/3400i What to do if... What to do if... LoBat display Cause Remedy – Batteries almost empty – Replace batteries (see section 5.1 M AINTENANCE Instrument does not Cause Remedy react to keystroke – Operating condition – Processor reset: undefined or EMC load Press the <CAL>...
  • Page 52 – Output data storage and clear data storage You would like to know Cause Remedy which software version – e.g. question of the WTW – Press the key and switch is in the instrument service department on instrument. The software...

  • Page 53: Technical Data

    Cond 3300i/3400i Technical data Technical data Dimensions and weight Length [mm] Width [mm] Height [mm] Weight [kg] Approx. 0.3 Mechanical structure Type of protection IP 66 Electrical safety Protective class Test certificates cETLus, CE Ambient Storage - 25 °C ... + 65 °C...
  • Page 54 Technical data Cond 3300i/3400i [µS/cm] 0.000 ... 1.999 (only for cell constant = 0.010 cm 0.00 ... 19.99 (only at a cell const. = 0.010 cm and cell const. = 0.090 ... 0.110 cm 0.0 ... 199.9 0 ... 1999 [mS/cm] 0.00 ...
  • Page 55 Cond 3300i/3400i Technical data T [°C] NTC 30: Accuracy ± PT 1000: Accuracy Operating temperature ± 0.5 0 °C ... 15 °C ± 0.1 15 °C ... 35 °C ± 1 35 °C ... 55 °C Cell constant, C [cm 0.450 ...
  • Page 56 Technical data Cond 3300i/3400i Saturation Voltage Resolution 0 ... 600 % 0 ... 600 mV 1 % per 1 mV D. O. partial pressure Voltage Resolution 0 ... 199.9 mbar 0 ... 1999 mV 0.1 mbar per 1 mV 0 ... 1250 mbar 0 ...
  • Page 57 Cond 3300i/3400i Technical data Batteries 4x1.5V alkali-manganese batteries, Type AA Mains (only Cond The following specifications apply to all plug- 3400i) in power supplies: Connection max. Over- voltage category II Plug-in power supply unit (Euro, US , UK, Australian plug) FRIWO FW7555M/09, 15.1432...
  • Page 58 Technical data Cond 3300i/3400i 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.

  • Page 59: Lists

    Cond 3300i/3400i Lists Lists This chapter provides additional information and orientation aids. Abbreviations The list of abbreviations explains the indicators and the abbreviations that appear on the display and in the manual. Specialist terms The glossary briefly explains the meaning of the specialist terms. How- ever, terms that should already be familiar to the target group are not described here.
  • Page 60 Lists Cond 3300i/3400i Abbreviations Conductivity value (international γ) AutoRead (drift control) ARng Automatic range switching Measuring instrument measures with highest reso- lution Cell constant [cm ] (internat. k) °C Temperature unit, degrees Celsius Calibration Initialization Resets individual basic functions to the status they...
  • Page 61 AutoRange Name of the automatic selection of the measuring range. AutoRead WTW 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. Of- ten, this expression is also used when the measuring system is adjust- ed at the same time (see adjusting).
  • Page 62 Lists Cond 3300i/3400i Salinity The absolute salinity S of seawater corresponds to the relationship of the mass of dissolved salts to the mass of the solution (in g/Kg). In practice, this dimension cannot be measured directly. Therefore, the practical salinity is used for oceanographic monitoring. It is deter- mined by measuring the electrical conductivity.
  • Page 63 Cond 3300i/3400i Index Index LoBat Analog output Authorized use AutoRead Nonlinear temperature compensati- Calibration Calibration protocol (3400i) Operating safety Cell constant determine set manually Printing Conductivity calibration protocol Conductivity/ Resistance Connecting a printer Connecting the plug-in power supply Reference temperature...
  • Page 64 Index Cond 3300i/3400i...
  • Page 65 Wissenschaftlich-Technische Werkstätten GmbH Dr.-Karl-Slevogt-Straße 1 D-82362 Weilheim Germany Tel: +49 (0) 881 183-0 +49 (0) 881 183-100 Fax: +49 (0) 881 183-420 E-Mail: Info@WTW.com Internet: http://www.WTW.com...

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