Operating manual handylab Ox 12 79 17 M C AL 2 6 ARng O mg °C /l TP STO O RCL AR Oxygen Meter ba75369d04 01/2011
handylab LF 12 Accuracy when going to press Warranty 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.
handylab Ox 12 List of contents handylab Ox 12 - List of contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 1.2 1.3 1.4 2 4.3 4.4 4.5 4.6 4.7 01/2011 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 4.1 4.
List of contents handylab Ox 12 5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . . . . . 47 5.1 5.2 5.3 4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
handylab Ox 12 Overview 1 Overview The compact precision handheld meter handylab OX 12 enables you to carry out oxygen (D. O.) measurements rapidly and reliably. The handylab OX 12 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 OX 12.
Overview handylab Ox 12 1.1 Keypad M STO CAL RCL AR RUN/ENTER Key functions M Select the measuring mode : – D. O. concentration – D. O. saturation – D. O.
handylab Ox 12 Overview 1.2 Display Status display TDS UpH O S Sal mV/pH % mg/l m S/cm mbar M cm 1/ cm Sal °F° % /K TP Sensor symbol 1888 Baud Time Day.Month No. Year Ident 8 8 .8 Tref25 Tref20 LoBat nLF Lin Cal 1.3 AutoCal DIN AutoCalTEC Meas. value display Function and temperature display C Auto Store ARng AR RCL Jack field 3 2 1 1 D. O.
Overview handylab Ox 12 1.4 Dimensions and weight Length [mm] 172 Width [mm] 80 Height [mm] 37 Weight [kg] Approx. 0.3 Type of protection IP 66 Electrical safety Protective class III Test certificates cETLus, CE Mechanical structure Ambient conditions Measuring ranges/ resolutions Storage - 25 °C ... + 65 °C Operation -10 °C ... + 55 °C Relative atmospheric humidity < 90 % of annual average mg/l % mbar Measuring range I resolution 0 ... 19.99 0.01 0 ... 199.9 0.1 0 ... 199.
handylab Ox 12 Accuracy (± 1 digit) Correction functions Analog output ba75369e04 01/2011 Overview Concentration mg/l ± 0.5 % of the measured value at an ambient temperature of 5 °C ... 30 °C % saturation ± 0.5 % of the measured value when measuring in the range of ± 10 K around the calibration temperature Partial pressure mbar ± 0.5 % of the measured value at an ambient temperature of 5 °C ... 30 °C Temperature compensation < 2 % at 0 ... 40 °C T [°C] ± 0.1 Salinity correction 0 ... 70.
Overview handylab Ox 12 Internal resistance 10 < 5 Ohm (current limited to max. 0.
handylab Ox 12 Serial interface Power supply ba75369e04 01/2011 Overview Automatic switchover when a PC or printer is connected. Type RS232, data output Baud rate Can be set to 1200, 2400, 4800, 9600 Baud Data bits 8 Stop bit 2 Parity None Handshake RTS/CTS + Xon/Xoff Cable length Max. 15 m Batteries 4 x 1.5 V alkali-manganese batteries, Type AA Operational life Approx. 2000 operating hours Mains FRIWO FW7555M/09, 15.1432.500-00 Friwo Part. No. 1883259 Input: 100 ... 240 V ~ / 50 ..
Overview Applicable guidelines and norms handylab Ox 12 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 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.
handylab Ox 12 Safety 2 Safety This operating manual contains basic instructions that you must follow during the commissioning, operation and maintenance of the measuring instrument. 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 laboratory.
Safety handylab Ox 12 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 TECHNICAL DATA). It left the factory in a safe and secure technical condition.
handylab Ox 12 Commissioning 3 Commissioning 3.1 Scope of delivery z Handheld meter, handylab OX 12 z Operating manual and short operating manual z 4 batteries, 1.5 V Mignon type AA (in the instrument) 3.2 Initial commissioning Perform the following activities: z Set the date and time z Connect the plug-in power supply. Setting the date and time ba75369e04 01/2011 1 Press the key and hold it down. 2 Press the key. The display test appears briefly on the display.
Commissioning Connecting the plug-in power supply handylab Ox 12 You can either operate the measuring instrument with batteries or with the plug-in power supply. The plug-in power supply supplies the measuring instrument with low voltage (12 V DC). This saves the batteries. Caution The line voltage at the operating site must lie within the input voltage range of the original plug-in power supply (see section 1.4 TECHNICAL DATA). Caution Use original plug-in power supplies only (see section 1.
handylab Ox 12 Operation 4 Operation 4.1 Switching on the measuring instrument 1 Connect the D. O. probe to the measuring instrument. 2 Press the key. The display test appears briefly on the display. The relative slope for the probe type that was just connected subsequently appears for approx. one second. The measuring instrument then automatically switches to the measuring mode that was last selected. The display shows the relevant measured value.
Operation handylab Ox 12 4.2 Measuring 4.2.1 General information You can measure the following variables: z D. O. concentration z D. O. saturation z D. O. partial pressure The measuring instrument is supplied with the following functions: z AutoRange (automatic measurement range selection), z The AutoRead function (drift control) for checking the stability of the measurement signal. This ensures the reproducibility of the measuring signal.
handylab Ox 12 Operation 4.2.2 Measuring the D. O. concentration Note When measuring the concentration of test samples with a salt content of more than 1 g/l, a salinity correction is required. For this, you have to measure and input the salinity of the measured medium first. This is described in section 4.3.3 ENTERING THE SALT CONTENT (SALINITY). Before measuring the oxygen, you have to switch on the salt content correction (see below).
Operation handylab Ox 12 2 4.2.3 Switch the salt content correction off with <▼ >. The SAL display indicator is no longer displayed. Measuring the D. O. saturation You can measure the D. O. saturation as follows: 1 Perform the preparatory activities according to section 4.2.1. 2 Immerse the D. O. probe in the test sample. 3 Press the key repeatedly until the saturation in % appears on the display. TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1892 Baud Time Day.
handylab Ox 12 Operation 4.2.5 AutoRange Selecting the measuring range, AutoRange Each of the measuring parameters has 2 measuring ranges available. AutoRange causes the measuring instrument to change to measuring range II if measuring range I is exceeded, and also vice versa. To switch the automatic measurement range selection on/off, see section 4.6 CONFIGURATION. When the AutoRange function is switched on, ARng appears on the display.
Operation handylab Ox 12 5 Criteria 22 To terminate the AutoRead function: Press the key. With identical measurement conditions, the following applies: Parameter Reproducibility Response time D. O. concentration better than 0.05 mg/l > 10 seconds D. O. saturation index better than 0.6 % > 10 seconds D. O. partial pressure better than 0.
handylab Ox 12 Operation 4.3 Why calibrate? Calibration procedures Calibrating D. O. probes age. This changes the slope of the D. O. probe. Calibration determines the current slope of the probe and stores this value in the instrument. Thus, you should calibrate at regular intervals. The handylab OX 12 provides 2 calibration procedures: z Calibration in water vapor-saturated air. Use an air calibration vessel for calibration. z Calibration via a comparison measurement (e. g.
Operation handylab Ox 12 Sample printout: CALIBRATION PROTOCOL 02.03.99 14:19 Device No.: 12345678 CALIBRATION 02 Cal time: 02.03.99 / 14:19 Cal interval: 14d OxiCal Tauto AR Relative Slope: 0,88 Probe: +++ Sensor evaluation After the calibration, the measuring instrument evaluates the current status of the sensor against the relative slope. The evaluation appears on the display. The relative slope has no effect on the measuring accuracy.
handylab Ox 12 Operation 4.3.1 Calibrating with the air calibration vessel Proceed as follows to calibrate the instrument: 1 Connect the D. O. probe to the measuring instrument. 2 Keep an air calibration vessel ready for use. Note The sponge in the air calibration vessel must be moist (not wet). 3 Put the D. O. probe into the air calibration vessel. 4 Press the key repeatedly until O2 CAL appears. TDS UpH O S 1C AL Baud Time Day.Month No.
Operation handylab Ox 12 TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1088 Baud Time Day.Month No. Year Ident 8176 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 7 Switch to the measuring mode with . Note In chapter 6 WHAT TO DO IF... , you will find the measures to take for error elimination.
handylab Ox 12 Operation 4.3.2 Calibrating via a comparison measurement Proceed as follows to calibrate the instrument: ba75369e04 01/2011 1 Connect the D. O. probe to the measuring instrument. 2 Press the key repeatedly until O2 FAC appears. 3 Immerse the D. O. probe in the calibrating solution. 4 Press the key. The AutoRead measurement begins.
Operation handylab Ox 12 8 Switch to the measuring mode with or . Note If the correction factor deviates from 1.000, the display of the measured value unit flashes.
handylab Ox 12 Operation 4.3.3 Entering the salt content (salinity) A salt content correction is required in the oxygen concentration measurement of test samples with a salt content of more than 1 g/l. For this, you have to enter the salinity equivalent (the measured salinity) of the test sample (range 0.0 - 70.0) and to switch on the salinity correction. Entering the salt content Parameter Value range Salinity 0.0 ... 70.0 in steps of 0.
Operation handylab Ox 12 4.4 Saving The measuring instrument has an internal data memory. It can store up to 800 data records. A complete data record consists of: z Storage location z Date/time z Measured value z Temperature z Temperature measuring procedure z ID number You can transmit measured values (data records) to the data storage in two ways: z Save manually z Switch on AutoStore (Int 1). 4.4.
handylab Ox 12 Operation TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1837 Baud Time Day.Month No. Year Ident 8174 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL Message StoFull 3 Using <▲> <▼>, enter the required ID number (1 ... 999). 4 Confirm with . The instrument changes to the measuring mode. This message appears when all of the 800 storage locations are occupied.
Operation handylab Ox 12 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 transmitted to the storage and to the interface. Setting the save interval The default setting for the save interval (Int 1) is OFF. By this, the AutoStore function is switched off.
handylab Ox 12 Operation 6 Confirm with . The prompt for the ID number appears on the display. TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1999 Baud Time Day.Month No. Year Ident Fr e1 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 7 Set the required ID number with <▲> <▼>. 8 Confirm with . The instrument switches to the Oxi measuring mode and starts the measuring and saving process.
Operation handylab Ox 12 4.4.3 Outputting the data storage You can output the contents of the data storage: z Stored data on the display z Calibration data on the display z Stored data on the serial interface z Calibration protocol to the interface Outputting stored data on the display 1 Press the key repeatedly until StO dISP appears on the display. TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1ST O Baud Time Day.Month No.
handylab Ox 12 Operation Note If you want to search for a certain element (e.g. date), proceed as follows: Outputting stored data to the interface 1 Using , select the element (e.g. date). 2 Press <▲> or <▼> repeatedly until the required date appears on the display. After approx. 2 s the temperature of the displayed measured value appears. 1 Press the key repeatedly until Sto SEr appears on the display.
Operation handylab Ox 12 Sample printout: Device No.: 99990000 No. 1: 09.03.99 101.7 % Tauto Ident : 10 No. 2: 09.03.99 7.11 mbar Tauto Ident : 10 17:10 17.6° 17:11 17.6° No. 4: 09.03.99 7.11 mg/l Tauto SAL = 17.9 Ident : 7 ... 1 C AR No. 3: 09.03.99 7.88 mg/l Tauto Ident : 10 Outputting the calibration data on the display C AR 17:12 17.6° C 17:15 17.8° C Press the key repeatedly until CAL dISP appears on the display. ISE UpH mol/L mV/pH % ppm mg/L S 1 0 C A L°F Baud Time Day.
handylab Ox 12 Outputting the calibration protocol on the interface Operation 3 Using or , you can switch back to the measuring mode. 1 Press the key repeatedly until CAL appears on the display. ISE UpH mol/L mV/pH % ppm mg/L S 1 0 C A L°F Baud Time Day.Month No. Year LoBat 2 Ident d s e r °C % TP AutoCal DIN Auto Store CalError TempError AutoCal TEC ConCal ARng AR RCL Press the key. The calibration protocol is transmitted to the interface.
Operation handylab Ox 12 4.4.4 Clearing the memory With this function, you can delete stored data records. 800 storage locations 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 automatically switches to the measuring mode. Proceed as follows to clear all data records: 1 Switch off the measuring instrument. 2 Press the key and hold it down. 3 Press the key.
handylab Ox 12 Operation 4.5 Transmitting data You have the following possibilities of transmitting data: z 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. – With the Data transmission interval function (Int 2), measured values are periodically output on the interface (see below).
Operation handylab Ox 12 TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1nt 2 Baud Time Day.Month No. Year Ident 8OFF C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 3 Set the required interval between the saving procedures with <▲> <▼>. 4 Confirm with . The measuring instrument automatically switches to the measuring mode. 4.5.2 Recorder (analog output) You can transmit data to a recorder via the analog output.
handylab Ox 12 Operation 4.5.3 PC/external printer (RS232 interface) Via the RS 232 interface, you can transmit the data to a PC or an external printer. Use the Z 395 (PC) or Z 391 (ext. printer) cable to connect the interface to the instruments. The data output automatically switches to the RS232 interface. Caution The RS232 interface is not galvanically isolated. When connecting an earthed PC/printer, measurements cannot be performed in earthed media as incorrect values would result.
Operation handylab Ox 12 4.6 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): Baud rate 1200, 2400, 4800, 9600 Air pressure display Current value in mbar (no input possible) AutoRange ARng On or off Calibration interval (Int 3) 1 ... 14 ... 999 d Date/time Any Note You can leave the configuration menu at any time with .
handylab Ox 12 Displaying the air pressure Operation TDS UpH O Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP S 1nt P Baud Time Day.Month No. Year Ident 4949 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL 6 Calibration interval Confirm with . Int 3 appears on the display. TDS UpH O Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP S 1nt 3 Baud Time Day.Month No.
Operation handylab Ox 12 Date and time TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1Dis Baud Time Day.Month No. Year Ident 0904 C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR 44 11 Set the date of the current day with <▲> <▼>. 12 Confirm with . The date (month) flashes in the display. 13 Set the current month with <▲> <▼>. 14 Confirm with . The year appears on the display. 15 Set the current year with <▲> <▼>.
handylab Ox 12 Operation 4.7 Reset You can reset (initialize) the measurement parameters and the configuration parameters separately from one another. Measurement parameters The following measured parameters (O2 InI) are reset to the default condition: Measuring mode D. O. concentration AutoRange automatic measurement range selection On (YES) Relative slope 1.00 Correction factor of the relative slope 1.000 Salinity equivalent 0.
Operation Resetting the measuring paramters handylab Ox 12 1 Press the key and hold it down. 2 Press the key. TDS UpH O S Sal mV/pH % mg/l m S/cm mbarM cm 1/ cmSal °F° % /K TP 1In I Baud Time Day.Month No. Year Ident 4Yno C Tref25 Tref20 AutoCal DIN Auto Store LoBat nLF Lin Cal AutoCal TEC ARng AR RCL Resetting the configuration parameters 3 Using <▲> <▼>, switch between no and YES. YES: Resetting the measuring parameters no: Retaining settings.
handylab Ox 12 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 2 1 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).
Maintenance, cleaning, disposal handylab Ox 12 Note For the maintenance of the sensors, 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.
handylab Ox 12 What to do if... 6 LoBat display What to do if... Cause Remedy – Batteries almost empty – Replace batteries (see section 5.1 MAINTENANCE) Instrument does not react to keystroke Cause Remedy – Operating condition undefined or EMC load unallowed – Processor reset: Press the and keys at the same time and release them again. The software version is displayed. Error message 0FL Cause Remedy Display range exceeded D. O.
What to do if...
handylab Ox 12 Message StoFull ba75369e04 01/2011 What to do if...
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handylab Ox 12 Lists 7 Lists This chapter provides additional information and orientation aids. Abbreviations Specialist terms Index ba75369e04 01/2011 The list of abbreviations explains the indicators and the abbreviations that appear on the display and in the manual. 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 will help you to find the topics that you are looking for.
Lists handylab Ox 12 Abbreviations 54 AR AutoRead (drift control) ARng Automatic range switching Measuring instrument measures with highest resolution °C Temperature unit, degrees Celsius Cal Calibration D. O.
handylab Ox 12 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. Amperometry Name of a measuring technique. The signal (depending on the measured parameter) of the probe is the electric current. The electrical voltage remains constant. AutoRange AutoRead Calibration D. O. partial pressure D. O.
Lists handylab Ox 12 Standard solution Test sample 56 The standard solution is a solution where the measured value is known by definition. It is used to calibrate a measuring system. 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.
handylab OX 12 Index Index A Analog output 40 Authorized use 13 AutoRange 21 AutoRead 21 Criteria 22 C Calibration start 25 Calibration protocol 23 Connecting a printer 41 Connecting the plug-in power supply 16 D Data record 30 Data transmission (interval) 39 Default condition 45 Display 7 Drift control 21 E Electrode evaluation 24 Energy saving feature 17 Error messages 49 I Initial commissioning 15 Initialization 45 Interval data transmission 39 save 32 Measuring the D. O.
Index 58 handylab OX 12
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