Operating manual Cond 3110 53 nLF 25 0 0 AR ng mS /cm °C TP AR Conductivity meter ba75792e02 11/2008
Cond 3110 Accuracy when going to press Copyright The use of advanced technology and the high quality standard of our instruments are the result of a continuous development. This may result in differences between this operating manual and your meter. 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.
Cond 3110 Contents Cond 3110 - Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 1.2 1.3 2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.1 2.2 3 4.2 4.3 4.4 4.5 4.6 5.2 5.3 11/2008 13 13 13 14 General operating principles . . . . . . . . . . . . . . . . . . . . . . 4.1.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . 4.1.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . .
Contents Cond 3110 6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 7.1 7.2 8 4 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Measuring ranges, resolution, accuracy . . . . . . . . . . . . . 35 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cond 3110 Overview 1 Overview The Cond 3110 compact precision conductivity meter enables you to perform conductivity measurements quickly and reliably. The Cond 3110 provides the maximum degree of operating comfort, reliability and measuring certainty for all applications. The proven procedures for determining or adjusting the cell constant support your work with the conductivity meter.
Overview Cond 3110 1.1 Keypad Cond 3110 In this operating manual, keys are indicated by brackets <..> . The key symbol (e.g. ) 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. ).
Cond 3110 Overview 1.
Overview Cond 3110 1.3 Socket field 1 2 Connectors: 1 Conductivity measuring cell 2 Service interface Caution Only connect sensors to the meter that cannot return any voltages or currents that are not allowed (> SELV and > current circuit with current limiting). Almost all customary measuring cells fulfill these conditions.
Cond 3110 Safety 2 Safety This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the meter. Consequently, all responsible personnel must read this operating manual before working with the meter. The operating manual must always be available within the vicinity of the meter. Target group Safety instructions The meter was developed for work in the field and in the laboratory.
Safety Cond 3110 2.1 Authorized use Authorized use of the meter consists exclusively of the measurement of conductivity, temperature and salinity in a laboratory or field environment. The technical specifications as given in chapter 7 TECHNICAL DATA must be observed. Only the operation and running of the meter according to the instructions given in this operating manual is authorized. Any other use is considered unauthorized. 2.
Cond 3110 Safety Safe operation If safe operation is no longer possible, the meter must be taken out of service and secured against inadvertent operation! Safe operation is no longer possible if the meter: z has been damaged in transport z has been stored under adverse conditions for a lengthy period of time z is visibly damaged z no longer operates as described in this manual. If you are in any doubt, please contact the supplier of the meter.
Safety 12 Cond 3110 ba75792e02 11/2008
Cond 3110 Commissioning 3 Commissioning 3.1 Scope of delivery z Conductivity meter Cond 3110 z 4 batteries 1.5 V Mignon type AA z Operating manual 3.2 Initial commissioning Perform the following activities: z Insert the supplied batteries z Switch on the meter. 3.2.1 Inserting the batteries 1 Unscrew the two screws (1) on the underside of the meter. 2 Open the battery compartment (2) on the underside of the meter. 1 2 3 Place four batteries (type Mignon AA) in the battery compartment.
Commissioning Cond 3110 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. 4 3.2.2 Close the battery compartment (2) and tighten the screws (1). Switching on the meter 1 Place the meter on a flat surface and protect it from intense light and heat. 2 Press the key. A display test is briefly displayed.
Cond 3110 Operation 4 Operation 4.1 General operating principles This section contains basic information on the operation of the Cond 3110. 4.1.1 Operating modes The meter has the following operating modes: z Measurement The display indicates the measurement data in the measured value display z Calibration The display guides you through a calibration procedure with calibration information z Configuration The system menu or a sensor menu with submenus, settings and functions is displayed 4.1.
Operation Cond 3110 4.2 Preparatory activities Stability control AutoRead Measuring Perform the following preparatory activities when you want to measure: 1 Connect a measuring cell to the meter. 2 Adjust the temperature of the test solutions and measure the current temperature if the measurement is made without a temperature sensor. 3 Calibrate or check the meter with the measuring cell. 4 Select the measured parameter with .
Cond 3110 Operation 4.2.1 Measuring the conductivity 1 Perform the preparatory activities according to section 4.2. 2 Immerse the conductivity measuring cell in the test sample. 3 If necessary, scroll with until the measured parameter with the unit mS/cm or µS/cm is displayed. 4 Wait for a stable measured value. The AR display indicator flashes as long as the measured value is not yet stable. 530 Tref25 nLF 4.2.
Operation Cond 3110 Sal 323 212 nLF 18 °C ARng TP AR ba75792e02 11/2008
Cond 3110 Operation 4.3 Why determine/set up the cell constant? Determining/setting up the cell constant [C] Due to aging, the cell constant slightly changes. As a result, an inexact measured value is displayed. Calibration determines the current value of the cell constant and stores this value in the meter. Thus, you should calibrate at regular intervals. You can either determine the cell constant of the conductivity measuring cell in the range 0.450 ... 0.500 cm-1 or 0.800 ... 0.
Operation Cond 3110 C AL Tref25 083 8 1/cm Cal 3 Immerse the measuring cell in the control standard solution, 0.01 mol/l KCI. 4 Start the calibration with . The determination of the cell constant with stability control starts. The display indicator flashes until there is a stable signal. The cell constant determined is displayed. The meter automatically stores the cell constant. C Tref25 083 4 1/cm Cal 5 Switch to the measuring mode with . The determined cell constant is used.
Cond 3110 Operation Calibration evaluation After the calibration, the meter automatically evaluates the current status. The evaluation appears on the display. Cell constant [cm-1] Display in the range 0.450 ... 0.500 cm-1 0.800 ... 0.880 cm-1 You are working with a correctly calibrated measuring cell. E3 Eliminate the error according to chapter 6 WHAT TO DO IF... Downloading calibration data You can download the calibration data. 1 4.3.2 Precondition outside the ranges 0.450 ... 0.500 cm-1 or 0.
Operation Cond 3110 3 If necessary, press repeatedly until CAL and the last calibrated cell constant is displayed. C AL Tref25 083 8 1/cm Cal 4 4.3.3 Confirm the selection with . The displayed cell constant is used. The meter switches to the measured value display. 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. Range 0.800 ... 0.
Cond 3110 Operation 14 2 8 Tref25 083 7 Set the cell constant to be used with <▲><▼>, e.g. 0.837 cm-1. 14 8 1 Tref25 nLF 5 ba75792e02 11/2008 1/cm ARng nLF 4 µ S/cm µ S/cm 1/cm 083 8 ARng Confirm the selection with . The new cell constant is used from now on. The meter switches to the measured value display.
Operation Selecting the cell constant 0.475 cm-1 Cond 3110 1 Press the key repeatedly until USE CELL is displayed. USE CEL L Confirm the selection with or repeatedly until the cell constant 0.475 cm-1 is displayed. 678 Tref25 nLF 4 24 _>. 2 µ S/cm 1/cm 047 5 ARng Confirm the selection with . The meter switches to the measured value display.
Cond 3110 Operation 4.4 Temperature compensation TC The calculation of the temperature compensation is based on the preset reference temperature, Tref 20 or Tref 25 (see section 4.5 SETTINGS). As the temperature compensation, the nonlinear temperature compensation "nLF" according to DIN 38404 or EN 27 888 respectively is permanently set.
Operation Cond 3110 4.5 Settings You can adapt the meter to your individual requirements. The settings are done in the following menus: z System settings () – Switch-off interval (tOff) z Measurement settings () – Reference temperature (Tref25 or Tref20) – Temperature unit (°C / °F) – Cleaning interval (Int.C [0 ... 999]) Note You can exit the setting menu at any time by pressing . Settings already modified and confirmed with are stored. 4.5.
Cond 3110 Operation 4.5.2 Measurement settings These settings apply to the determination of the cell constant and measurement (the default condition is printed in bold). Reference temperature Reference temperature t25, t20 Temperature unit (UnI) °C, °F Cleaning interval (Int.C) 0 ... 180 ... 999 d 1 _ Open the menu for measurement settings with . t25, the adjusted reference temperature is displayed. T 25 Tref25 2 Select the reference temperature with <▲><▼>. 3 Confirm with .
Operation Cond 3110 4 Using <▲><▼>, toggle between °C and °F. 5 Confirm with . Int.C, the setting of the cleaning interval is displayed. Cleaning interval (Int.C) Time 28 INT C d1 8 0 6 Set the interval with <▲><▼>. 7 Confirm with . The measurement settings are completed. The meter switches to the measuring mode.
Cond 3110 Operation 4.6 Reset 4.6.1 Resetting the cell constant This function serves to erase the last determined cell constant. Subsequently, the meter uses the last manually set cell constant in the range 0.800 ... 0.880 cm-1 or the fixed cell constant, 0.475 cm-1. Based on the last erased cell constant the meter decides to which of the two manually set cell constants the cell constant is reset. If the erased cell constant was in the calibration range 0.450 ... 0.500 cm-1, the fixed cell constant 0.
Operation Cond 3110 4.6.2 Resetting all meter settings This function resets all meter settings to the default condition. The relevant values are given in the following sections: System settings section 4.5.1 Measurement settings section 4.5.2 The following settings are also reset to the default condition: Setting Default settings Measured parameter Adjusted cell constant Resetting the meter settings mS/cm or µS/cm 0.840 1/cm 1 Switch on the meter with .
Cond 3110 Maintenance, cleaning, disposal 5 Maintenance, cleaning, disposal 5.1 Maintenance The only maintenance activity required is replacing the batteries. Note See the relevant operating manuals of the measuring cells for instructions on maintenance. 5.1.1 Replacing the batteries 1 Unscrew the two screws (1) on the underside of the meter, 2 Open the battery compartment (2) on the underside of the meter. 1 2 3 Remove the four batteries from the battery compartment.
Maintenance, cleaning, disposal Cond 3110 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. 5 5.2 Close the battery compartment (2) and tighten the screws (1). Cleaning Occasionally wipe the outside of the meter with a damp, lint-free cloth. Disinfect the housing with isopropanol as required. Caution The housing is made of synthetic material (ABS).
Cond 3110 What to do if... 6 Error message OFL, UFL Cause Error message, E3 Cause Sensor symbol flashes What to do if...
What to do if...
Cond 3110 Technical data Dimensions Weight Mechanical structure 7 Technical data 7.1 General data approx. 240 x 190 x 80 mm approx. 0.4 kg Type of protection IP 67 Electrical safety Protective class III Test certificates CE Ambient conditions Power supply Guidelines and norms used Storage - 25 °C ... + 65 °C Operation -10 °C ... + 55 °C Climatic class 2 Batteries 4 x 1.
Technical data Measuring ranges, resolution Cell constants Reference temperature Accuracy (± 1 digit) Cond 3110 Variable Measuring range Resolution SAL 0.0 ... 70.0 according to the IOT table 0.1 T [°C] − 5.0 ... + 105.0 0.1 T [°F] + 23.0 ... + 221.0 0.1 Cell constant C Values Can be calibrated in the ranges 0.450 ... 0.500 cm-1 0.800 ... 0.880 cm-1 Adjustable 0.800 ... 0.880 cm-1 0.
Cond 3110 Lists 8 Lists This chapter provides additional information and orientation aids. Specialist terms Index 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. The index helps you to find the topics that you are looking for. Glossary Adjusting AutoRange Name of the automatic selection of the measuring range. Calibration Comparing the value from a measuring system (e. g.
Lists Cond 3110 Reset Restoring the original condition of all settings of a measuring system. Resistance Short name for the specific electrolytic resistance. It corresponds to the reciprocal value of the electrical conductivity. Resolution Smallest difference between two measured values that can be displayed by a measuring instrument.
Cond 3110 Lists Index A P Authorized use . . . . . . . . . . . . . . . . . . . . . . 10 AutoRead . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . 9 R B Battery compartment . . . . . . . . . . . . . . 13, 31 Baud rate setting . . . . . . . . . . . . . . . . . . . . 26 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 All meter settings . . . . . . . . . . . . . . . . . 30 Cell constant . . . . . . . . . . . . . . . .
Lists 40 Cond 3110 ba75792e02 11/2008
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