Xylem WTW pH/Cond 3320 Operating Manual
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Xylem WTW pH/Cond 3320 Operating Manual

Meter for 2 sensors
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OPERATING MANUAL
ba77054d01 02/2014
pH/Cond 3320
METER FOR 2 SENSORS (PH/ORP/COND)

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  • Page 1 OPERATING MANUAL ba77054d01 02/2014 pH/Cond 3320 METER FOR 2 SENSORS (PH/ORP/COND)
  • Page 2 pH/Cond 3320 For the most recent version of the manual, please visit www.WTW.com. Copyright © Weilheim 2014, WTW GmbH Reproduction in whole - or even in part - is prohibited without the express written permission of WTW GmbH, Weilheim. Printed in Germany.. ba77054d01 02/2014...

  • Page 3: Table Of Contents

    pH/Cond 3320 Contents pH/Cond 3320 - Contents Overview ........6 pH/Cond 3320 meter.
  • Page 4 Contents pH/Cond 3320 Measuring ........21 5.1.1 Measuring the pH value .
  • Page 5 pH/Cond 3320 Contents Data storage ....... . . 57 Manual storage ....... . 57 Automatic data storage at intervals .

  • Page 6: Overview

    Overview pH/Cond 3320 Overview pH/Cond 3320 meter The pH/Cond 3320 meter enables you to perform measurements (pH, U, ISE, conductivity) quickly and reliably. The pH/Cond 3320 provides the maximum degree of operating comfort, reli- ability and measuring certainty for all applications. 1 Keypad 2 Display 3 Socket field...

  • Page 7: Safety Instructions

    pH/Cond 3320 Safety instructions Safety instructions Safety information 2.1.1 Safety information in the operating manual This operating manual provides important information on the safe operation of the meter. Read this operating manual thoroughly and make yourself familiar with the meter before putting it into operation or working with it. The operating manual must be kept in the vicinity of the meter so you can always find the infor- mation you need.

  • Page 8: Safe Operation

    Safety instructions pH/Cond 3320 Safe operation 2.2.1 Authorized use This meter is authorized exclusively for pH, ISE, ORP and conductivity measurements in a laboratory environment. Only the operation and running of the meter according to the instructions and technical specifications given in this operating manual is authorized (see section 13 T , page 71).

  • Page 9: Commissioning

    pH/Cond 3320 Commissioning Commissioning Scope of delivery  MeterpH/Cond 3320  4 batteries 1.5 V Mignon type AA  Short instructions  CD-ROM with – USB drivers – detailed operating manual – Software MultiLab Importer Power supply The pH/Cond 3320 is supplied with power in the following ways: ...

  • Page 10: Inserting The Batteries

    Commissioning pH/Cond 3320 3.3.1 Inserting the batteries You can operate the meter either with normal batteries or with rechargeable batteries (Ni-MH). In order to charge the batteries, an external charging device is required. 1 Screws 2 Battery compartment Unscrew the two screws (1) on the underside of the meter. Open the battery compartment (2) on the underside of the meter.

  • Page 11: Operation

    pH/Cond 3320 Operation Operation General operating principles 4.1.1 Keypad In this operating manual, keys are indicated by brackets <..> . The key symbol (e.g. <ENTER>) generally indicates a short keystroke (under 2 sec) in this operating manual. A long keystroke (approx. 2 sec) is indicated by the underscore behind the key symbol (e.g.

  • Page 12: Display

    Operation pH/Cond 3320 4.1.2 Display 6.093 25.0 °C AutoCal TEC HOLD AR 15.02.2014 USB output 14:15 1 Status information (sensor) 2 Measured value (with unit) 3 Measured parameter 4 Continuous measurement control (CMC function) 5 Channel display: Plug position of the sensor 6 Sensor symbol (calibration evaluation, calibration interval) 7 Measured temperature (with unit) 8 Status information (meter)

  • Page 13: Socket Field

    pH/Cond 3320 Operation 4.1.4 Socket field 1 pH electrode 2 Temperature sensor 3 Oxygen sensor or conductivity measuring cell 4 Mini USB-B interface 5 Service interface CAUTION Only connect sensors to the meter that cannot return any volt- ages or currents that are not allowed (> SELV and > current circuit with current limiting).

  • Page 14: Switching Off

    Operation pH/Cond 3320 Switching off Switch the printer off with <On/Off>. Automatic switch-off The instrument has an automatic switch-off function in order to save the batteries (see section 8.2.1 S , page 53). The automatic switchoff function YSTEM switches off the meter if no key is pressed for an adjustable period. The automatic switchoff function is not active ...

  • Page 15: Measured Value Display

    pH/Cond 3320 Operation 4.4.2 Measured value display In the measured value display, open the setting menus with <ENTER>. The current functions of the softkeys are shown on the display.  Use <ENTER> (short pressure) to open the menu for calibration and mea- surement settings for the displayed measured parameter.

  • Page 16: Example 1 On Navigation: Setting The Language

    Operation pH/Cond 3320 General Language: Deutsch Beep Illumination Contrast 50 % Switchoff time Temperature unit °C Stability control 15.02.2014 Back 14:15  Functions Functions are designated by the name of the function. They are immediately carried out by confirming with <ENTER>. Example: Display the Calibration record function.
  • Page 17 pH/Cond 3320 Operation 6.949 25.0 °C 15.02.2014 USB output 14:15 Using <ENTER__> , open the Storage & config menu. The instrument is in the setting mode. Storage & config System Data storage 15.02.2014 Back 14:15 Select the System submenu with <><>. The current selection is displayed with a frame.

  • Page 18: Example 2 On Navigation: Setting The Date And Time

    Operation pH/Cond 3320 General Language: Deutsch Beep Illumination Contrast 50 % Switchoff time Temperature unit °C Stability control 15.02.2014 Back 14:15 Open the setting mode for the Language with <ENTER>. General Language: Deutsch Beep Illumination Contrast 50 % Switchoff time Temperature unit °C Stability control...
  • Page 19 pH/Cond 3320 Operation The date format can be switched from the display of day, month, year (dd.mm.yyyy) to the display of month, day, year (mm/dd/yyyy or mm.dd.yyyy). In the measured value display: Using <ENTER__> , open the Storage & config menu. The instrument is in the setting mode.

  • Page 20: Channel Display

    Operation pH/Cond 3320 Channel display The pH/Cond 3320 manages the connected sensors and displays which sensor is plugged to which connection. Channel display Display of the plug position for the respective parameter The filled bar indicates for 6.949 each connected sensor to which plug position of the 24.8 °C meter it is connected.

  • Page 21: Ph Value

    pH/Cond 3320 pH value pH value Measuring 5.1.1 Measuring the pH value NOTE When connecting an earthed PC/printer, measurements cannot be performed in earthed media as the values would be incorrect. The USB interface is not galvanically isolated. To ensure the high measurement accuracy of the measuring sys- tem, always measure with a calibrated electrode (see section 5.2 , page 24).
  • Page 22 pH value pH/Cond 3320 Freeze the measured value with <AR>. The [HOLD] status indicator is displayed. The HOLD function is active. You can terminate the Stability control function and the HOLD func- tion with <AR> or <M> at any time. Using <ENTER>, activate the Stability control function manually.

  • Page 23: Measuring The Temperature

    pH/Cond 3320 pH value 5.1.2 Measuring the temperature For reproducible pH measurements, it is essential to measure the temperature of the test sample. You have the following options to measure the temperature:  Automatic measurement of the temperature with the temperature sensor (NTC30 or Pt1000) integrated in the sensor.

  • Page 24: Calibration

    pH value pH/Cond 3320 Calibration 5.2.1 Why calibrate? pH electrodes age. This changes the zero point (asymmetry) and slope of the pH electrode. As a result, an inexact measured value is displayed. Calibration determines and stores the current values of the zero point and slope of the electrode.
  • Page 25 pH/Cond 3320 pH value Buffer -180.0 24.8 °C AutoCal TEC 15.02.2014 14:15 Thoroughly rinse the electrode with deionized water. Immerse the electrode in the first buffer solution. When measuring without temperature sensor: – Temper the buffer solution, or measure the current temperature. –...
  • Page 26 pH value pH/Cond 3320 When measuring without temperature sensor: – Temper the buffer solution, or measure the current temperature. – Enter the temperature value in the menu. Start the measurement with <ENTER>. The measured value is checked for stability (stability control). The [AR] status indicator is displayed.

  • Page 27: Manual Calibration (Concal)

    pH/Cond 3320 pH value 4.010 Buffer 180.0 24.8 °C AutoCal TEC 15.02.2014 14:15 Wait for the measurement with stability control to be completed or termi- nate the stability control and take over the calibration value with <ENTER>. The calibration display for the next buffer appears (voltage display). If necessary, use <M>...
  • Page 28 pH value pH/Cond 3320 Buffer 24.8 °C ConCal 15.02.2014 14:15 Thoroughly rinse the electrode with deionized water. Immerse the electrode in the first buffer solution. When measuring without temperature sensor: – Temper the buffer solution, or measure the current temperature. –...
  • Page 29 pH/Cond 3320 pH value Accept the set calibration value with <ENTER>. The calibration display for the next buffer appears (voltage display). If necessary, finish the calibration procedure as a single-point calibration with <M>. The calibration record is displayed. For single-point calibration, the instrument uses the Nernst slope (-59.2 mV/pH at 25 °C) and determines the zero point of the elec- trode.

  • Page 30: Calibration Points

    pH value pH/Cond 3320 Continuing with Thoroughly rinse the electrode with deionized water. three- to five-point calibration Immerse the electrode in the next buffer solution. When measuring without temperature sensor: – Temper the buffer solution, or measure the current temperature. –...

  • Page 31: Calibration Data

    pH/Cond 3320 pH value Determined Displayed calibration data values 1-point  Zero point = Asy  Slope = Nernst slope (-59.2 mV/pH at 25 °C) 2-point  Zero point = Asy Slp.  Slope = Slp. 3-point to  Zero point = Asy 5-point Slp.
  • Page 32 pH value pH/Cond 3320 Menu item Setting/func- Description tion Calibration / Calibra- Displays the calibration record. tion data storage / Display Further options:  Scroll through the calibration records with <><>.  Output the displayed calibra- tion record to the interface with <F2>/[USB output].

  • Page 33: Continuous Measurement Control (Cmc Function)

    pH/Cond 3320 pH value Calibration record pH/Cond 3320 (example) Ser. no. 11292113 CALIBRATIONpH 15.02.2014 15:55 AutoCal TEC Buffer 1 4.01 Buffer 2 7.00 Buffer 3 10.01 Voltage 1 184.0 mV Voltage 2 3.0 mV Voltage 3 -177.0 mV Temperature 1 24.0 °C Temperature 2 24.0 °C...
  • Page 34 pH value pH/Cond 3320 The following information is displayed: 6.093 25.0 °C 15.02.2014 USB output 14:15 1 Measuring range for which a valid calibration is available (white). Measured values in this range are suitable for documentation. 2 Measuring range for which no valid calibration is available (shaded). Measured values in this range are not suitable for documentation.

  • Page 35: Orp Voltage

    pH/Cond 3320 ORP voltage ORP voltage Measuring 6.1.1 Measuring the ORP NOTE When connecting an earthed PC/printer, measurements cannot be performed in earthed media as the values would be incorrect. The USB interface is not galvanically isolated. Connect the ORP electrode to the meter. If necessary, select the U (mV) display with <M>.
  • Page 36 ORP voltage pH/Cond 3320 Measured variable Time interval Stability in the time interval Δ : better than 0.3 mV 15 seconds Δ : better than 0.5 °C Temperature 15 seconds The minimum duration until a measured value is assessed as stable is the monitored time interval.

  • Page 37: Measuring The Temperature

    pH/Cond 3320 ORP voltage Release the frozen measured value again with <AR>. The HOLD function is switched off. The [HOLD] status display disappears. 6.1.2 Measuring the temperature For reproducible ORP measurements, it is essential to measure the tempera- ture of the test sample. You have the following options to measure the temperature: ...

  • Page 38: Conductivity

    Conductivity pH/Cond 3320 Conductivity Measuring 7.1.1 Measuring the conductivity NOTE When connecting an earthed PC/printer, measurements cannot be performed in earthed media as the values would be incorrect. The USB interface is not galvanically isolated. Connect the conductivity measuring cell to the measuring instrument. The conductivity measuring screen is displayed.
  • Page 39 pH/Cond 3320 Conductivity The factor to calculate the total dissolved solids is set to 1.00 in the factory. You can adjust this factor to meet your requirements in the range 0.40 ... 1.00. The factor is set in the Measurement menu for the parameter, TDS.

  • Page 40: Measuring The Temperature

    Conductivity pH/Cond 3320 within the monitored time interval. Measured vari- Time interval Stability in the time inter- able Conductivity ϰ Δ : better than 10 seconds 1.0 % of mesured value Δ : better than 0.5 °C Temperature 15 seconds The minimum duration until a measured value is assessed as stable is the mon- itored time interval.

  • Page 41: Calibration Data

    pH/Cond 3320 Conductivity (e.g. KLE 325 with a nominal cell constant of 0.840 The cell constant is determined in the control standard, 0.01 mol/l KCl. Cell constants outside the ranges quoted above cannot be calibrated. In the delivery condition, the calibrated cell constant of the meter is set to 0.475 (conductivity measuring cell, TetraCon 325).
  • Page 42 Conductivity pH/Cond 3320 Subsequently, you can transmit the displayed calibration data to the interface, e.g. to a PC, with the <F2>[USB output] key. Displaying the cali- The calibration records of the last calibrations (up to 10) are available in the bration data storage menu, <ENTER>...
  • Page 43 pH/Cond 3320 Conductivity Calibration record pH/Cond 3320 (example) Ser. no. 11292113 CALIBRATION Cond 01.07.2011 16:13:33 Cell constant 0.479 1/cm 25.0 °C Sensor ba77054d01 02/2014...

  • Page 44: Settings

    Settings pH/Cond 3320 Settings Measurement settings 8.1.1 Settings for pH measurements The settings for pH measurements are made in the menu for calibration and measurement settings of the pH/ORP measurement. To open the settings, dis- play the required measured parameter in the measured value display and press the <ENTER>...

  • Page 45: Buffer Sets For Calibration

    pH/Cond 3320 Settings Menu item Possible set- Description ting Calibration /Unit for mV/pH Unit of the slope. slope The % display refers to the Nernst slope of -59.2 mV/pH (100 x deter- mined slope/Nernst slope). Alternative temper- Takes the temperature value from ature the 2nd sensor.
  • Page 46 Settings pH/Cond 3320 Buffer set * pH values Merck 3 * 4.660 20°C 6.880 9.220 Merck 4 * 2.000 20°C 4.000 7.000 10.000 Merck 5 * 4.010 25 °C 7.000 10.000 DIN 19267 1.090 25 °C 4.650 6.790 9.230 Mettler Toledo USA * 1.679 25 °C 4.003...

  • Page 47: Calibration Interval

    pH/Cond 3320 Settings Buffer set * pH values Hamilton Duracal * 4.005 25 °C 7.002 10.013 Precisa * 3.996 25 °C 7.003 8.999 Reagecon TEC * 2.000 25 °C 4.010 7.000 10.000 Reagecon 20 * 2.000 20°C 4.000 7.000 10.000 13.000 Reagecon 25 * 2.000...

  • Page 48: Settings For Orp Measurements

    Settings pH/Cond 3320 To ensure the high measuring accuracy of the measuring system, calibrate after the calibration interval has expired. Setting the calibra- The calibration interval is set to 7 days in the factory. tion interval You can change the interval (1 ... 999 days): Using <ENTER>, open the menu for the measurement settings.

  • Page 49: Settings For Conductivity Measuring Cells

    pH/Cond 3320 Settings 8.1.5 Settings for conductivity measuring cells The settings are made in the Measurement menu for the measured parameter, conductivity. To open the settings, display the required measured parameter in the measured value display and press the <ENTER> key. After completing the settings, switch to the measured value display with <M>.
  • Page 50 Settings pH/Cond 3320 Menu item Possible Description setting Measurement / Measuring cell used Measuring cell / Measuring cells whose cell constant Type is determined by calibration in the KCL control standard solution. Calibration ranges: 0.450 ... 0.500 cm 0.800 ... 0.880 cm The currently valid cell constant is displayed in the status line.

  • Page 51: Calibration Interval

    pH/Cond 3320 Settings Menu item Possible Description setting Measurement / 20 °C Reference temperature Temp. comp. (TC) 25 °C / Reference temp. This setting is only available for the measured parameters, ϰ and ρ. Measurement / 0.40 ... 1.00 Factor for TDS value TDS factor Reset Resets all sensor settings to the deliv-...

  • Page 52: Setting The Tds Factor

    Settings pH/Cond 3320 The reference temperature and temperature compensation are set in the Measurement menu for the parameter, conductivity (see sec- tion 8.1.5 S , page 49). ETTINGS FOR CONDUCTIVITY MEASURING CELLS Application tips Set the temperature compensation suitable for your test sample: Test sample Temperature compensation Display...

  • Page 53: Sensor-Independent Settings

    pH/Cond 3320 Settings Sensor-independent settings 8.2.1 System To open the Storage & config menu in the measured value display, press the <ENTER__> key. After completing the settings, switch to the measured value display with <M>. Default settings are printed in bold. Menu item Possible set- Description...

  • Page 54: Data Storage

    Settings pH/Cond 3320 Menu item Possible set- Description ting System /Clock Date format Time and date settings (see Datum section 4.4.6 E XAMPLE Time NAVIGATION ETTING THE DATE , page 18) AND TIME System /Service infor- Hardware version and software mation version of the meter are dis- played.

  • Page 55: Resetting The System Settings

    pH/Cond 3320 Settings Setting Default settings Slope -59.2 mV Man. temperature 25 °C One point calibration The sensor settings are reset under the Reset menu item in the menu for cali- bration and measurement settings. To open it in the measured value display, press the <ENTER>...
  • Page 56 Settings pH/Cond 3320 Setting Default settings Illumination Auto Switchoff time Stability control Temperature unit °C The system settings are reset in the menu, Storage & config / System / Reset. To open the Storage & config menu in the measured value display, press the <ENTER__>...

  • Page 57: Data Storage

    pH/Cond 3320 Data storage Data storage You can transmit measured values (datasets) to the data storage:  Manual data storage (see section 9.1 M , page 57) ANUAL STORAGE  Automatic storage at intervals (see section 9.2 A UTOMATIC DATA STORAGE AT , page 58) INTERVALS With each data storage process, the current datasets of the sen-...

  • Page 58: Automatic Data Storage At Intervals

    Data storage pH/Cond 3320 If the storage is full The following window appears if all 500 storage locations are occupied: Warning Data storage full. Erase? 15.02.2014 Back 14:15 You have the following options:  To erase the entire storage, confirm Yes. ...
  • Page 59 pH/Cond 3320 Data storage Settings You can configure the automatic data storage function with the following settings: Menu item Possible set- Description ting ID number 1 ... 10000 ID number for the dataset series. Interval 1 s, 5 s, 10 s, Storage interval.

  • Page 60: Measurement Data Storage

    Data storage pH/Cond 3320 saving mode switches off functions of the meter that are not required for the automatic storage of measurement data (such as the display). By pressing any key the energy saving mode is switched off again. Terminating the Proceed as follows to switch off the automatic data storage function before the automatic storage adjusted storage duration has expired:...
  • Page 61 pH/Cond 3320 Data storage Settings Menu item Setting/ Description function Data storage / Man- Displays all measurement datasets ual data storage / page by page. Display Further options:  Scroll through the datasets with <><>.  Output the displayed dataset to the interface with <F2>/[USB output].

  • Page 62: Erasing The Measurement Data Storage

    Data storage pH/Cond 3320 options:  Switch directly to the measured value display with <M>.  Quit the display and move to the next higher menu level with <F1>/[Back]. 9.3.2 Erasing the measurement data storage Erasing the measurement data storage (see section 9.3.1 E DITING THE , page 60).

  • Page 63: Transmitting Data (Usb Interface)

    pH/Cond 3320 Transmitting data (USB interface) Transmitting data (USB interface) 10.1 Options for data transmission Via the USB interface you can transmit data to a PC. The following table shows which data are transmitted to the interface in which way: Data Control Operation / description...

  • Page 64: Connecting A Pc

    Transmitting data (USB interface) pH/Cond 3320 10.2 Connecting a PC Connect the pH/Cond 3320 to the PC via the USB interface. NOTE When connecting an earthed PC/printer, measurements cannot be performed in earthed media as the values would be incorrect. The USB interface is not galvanically isolated.

  • Page 65: Maintenance, Cleaning, Disposal

    pH/Cond 3320 Maintenance, cleaning, disposal Maintenance, cleaning, disposal 11.1 Maintenance 11.1.1 General maintenance activities The only maintenance activity required is replacing the batteries. See the relevant operating manuals of the electrodes for instruc- tions on maintenance. 11.1.2 Replacing the batteries You can operate the meter either with normal batteries or with rechargeable batteries (Ni-MH).

  • Page 66: Cleaning

    Maintenance, cleaning, disposal pH/Cond 3320 Close the battery compartment (2) and tighten the screws (1). Set the date and time (see section 4.4.6 E XAMPLE ON NAVIGATION , page 18) ETTING THE DATE AND TIME When the batteries are nearly discharged, the status indi- cator is displayed.

  • Page 67: What To Do If

    pH/Cond 3320 What to do if... What to do if... 12.1 pH/ORP More information and instructions on cleaning and exchange of sensors are given in the documentation of your sensor. Error message The measured value is outside the measuring range. OFL, UFL Cause Remedy...
  • Page 68 What to do if... pH/Cond 3320 No stable measured Cause Remedy value Electrode: – Junction contaminated – Clean junction – Membrane contaminated – Clean membrane Test sample: – pH value not stable – Measure with air excluded if necessary – Temperature not stable –...

  • Page 69: Conductivity

    pH/Cond 3320 What to do if... 12.2 Conductivity More information and instructions on cleaning and exchange of sensors are given in the documentation of your sensor. Error message The measured value is outside the measuring range. OFL, UFL Cause Remedy –...

  • Page 70: General Information

    What to do if... pH/Cond 3320 12.3 General information Sensor symbol Cause Remedy flashes – Calibration interval expired – Recalibrate the measuring system Cause Remedy – Batteries almost empty – Replace the batteries (see section 11.1 M AINTENANCE Display page 65) Meter does not react Cause Remedy...

  • Page 71: Technical Data

    pH/Cond 3320 Technical data Technical data 13.1 Measuring ranges, resolution, accuracy 13.1.1 pH/ORP Measuring ranges, Parameter Measuring range Resolution resolution -2.0 ... +20.0 -2.00 ... +20.00 0.01 - 2.000 ... + 19.999 0.001 U [mV] -1200.0 ... +1200.0 -2500 ... +2500 T [°C] -5.0 ...

  • Page 72: Cond

    Technical data pH/Cond 3320 13.1.2 Cond Measuring ranges, Parameter Measuring range Resolution resolution ϰ [µS/cm] 0.000 ... 1.999* 0.001 0.00 ... 19.99** 0.01 0.0 ... 199.9 200 ... 1999 ϰ [mS/cm] 2.00 ... 19.99 0.01 20.0 ... 199.9 200 ... 1000 ρ...
  • Page 73 pH/Cond 3320 Technical data Accuracy (± 1 digit) Parameter Accuracy Temperature of the test sample ϰ and ρ / Temperature compensation None (Off) ± 0.5 % Nonlinear (nLF) ± 0.5 % 0 °C ... + 35 °C according to EN 27 888 ±...

  • Page 74: General Data

    Technical data pH/Cond 3320 13.2 General data Dimensions pH/Cond 3320: Approx. 180 x 80 x 55 mm Weight pH/Cond 3320: Approx. 0.4 kg Mechanical structure Type of protection IP 67 Electrical safety Protective class Test certificates CE, cETLus Ambient Storage -25 °C ...

  • Page 75: Firmware Update

    pH/Cond 3320 Firmware update Firmware update Available firmware updates are provided on the Internet. With the firmware update program and a PC you can update the firmware of the pH/Cond 3320 to the newest version. For the update you have to connect the meter to a PC. For the update via the USB interface, the following is required: ...

  • Page 76: Glossary

    Glossary pH/Cond 3320 Glossary pH/ORP/ISE Asymmetry see zero point Junction The junction is a porous body in the housing wall of reference elec- trodes or electrolyte bridges. It arranges the electrical contact between two solutions and makes the electrolyte exchange more difficult. The expression, junction, is also used for ground or junction-less transitions.
  • Page 77 pH/Cond 3320 Glossary Salt content General designation for the quantity of salt dissolved in water. α Temperature coeffi- Value of the slope of a linear temperature function. cient Meas * (T - 1 + a Temperature compen- Name of a function that considers the temperature influence on the sation measurement and converts it accordingly.
  • Page 78 Glossary pH/Cond 3320 Stability control (Au- Function to control the measured value stability. toRead ) Standard solution The standard solution is a solution where the measured value is known by definition. It is used to calibrate a measuring system. Temperature function Name of a mathematical function expressing the temperature behavior of a test sample, a sensor or part of a sensor.

  • Page 79: Index

    pH/Cond 3320 Index Index Measurement data storage Edit ......60 Automatic switch-off function ... 14 Erase .
  • Page 80 Index pH/Cond 3320 ba77054d01 02/2014...
  • Page 82 150 countries, we have strong, long-standing relationships with customers who know us for our powerful combination of leading product brands and applications expertise, backed by a legacy of innovation. For more information on how Xylem can help you, go to www.xyleminc.com Wissenschaftlich-Technische Werkstätten GmbH Dr.-Karl-Slevogt-Straße 1...

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