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wtw pHotoFlex pH Operating Manual

Led filter photometer with integrated ph function
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OPERATING MANUAL
ba75975e05 10/2017
®
pHotoFlex
pH
LED FILTER PHOTOMETER WITH INTEGRATED pH FUNCTION

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Summary of Contents for wtw pHotoFlex pH

  • Page 1 OPERATING MANUAL ba75975e05 10/2017 ® pHotoFlex LED FILTER PHOTOMETER WITH INTEGRATED pH FUNCTION...
  • Page 2 ® pHotoFlex © Copyright 2017 Xylem Analytics Germany GmbH Printed in Germany. ba75975e05 10/2017...

  • Page 3: Table Of Contents

    ® pHotoFlex Contents ® pHotoFlex pH - Contents Overview ........7 General features .
  • Page 4 ® Contents pHotoFlex 4.5.3 Measuring the concentration ....37 4.5.4 Blank value (reagent blank value) ... 40 4.5.5 Standard adjustment (user calibration) .
  • Page 5 ® pHotoFlex Contents Packing ........80 Disposal .
  • Page 6 ® Contents pHotoFlex ba75975e05 10/2017...

  • Page 7: Overview

    ® pHotoFlex Overview Overview General features ® The compact pHotoFlex pH handheld precision meter enables you to carry out the following measurements quickly and reliably:  Photometric measurements – Concentration measurements (colorimetric measurements) – Absorbance measurements – Transmission measurements  pH measurements. ®...

  • Page 8: Keypad

    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. Keypad Key functions Select the measuring mode <M>...
  • Page 9 ® pHotoFlex Overview In the Photometry measuring mode: Select a pro- gram for concentration measurement <PROG> Open menus / confirm entries / start measurement <START/ENTER> Call up the Configuration menu (all settings are made here) <MENU> In the Photometry measuring mode, measured parameter, Concentration switch over between available citation forms <FORM>...

  • Page 10: Display

    ® Overview pHotoFlex Display The graphic display shows all information of the current measurement in the measured value display. The illumination enables to read the dis- play even in the darkness. Example Measuring mode \ measured Photometry \ Concentration parameter 1.29 mg/l Measured value (with unit)

  • Page 11: Ba75975E05

    ® pHotoFlex Overview Laboratory operation with the LabStation enables the following addi- tional functions:  With photometric measurements, the zero measurement is retained ® even after switching the pHotoFlex pH off and on again  You can connect a bar code reader for the simplified calling up of programs ...
  • Page 12 ® Overview pHotoFlex ba75975e05 10/2017...

  • Page 13: Safety

    ® pHotoFlex Safety Safety Safety information 2.1.1 Safety information in the operating manual This operating manual provides important information on the safe oper- ation of the meter. Read this operating manual thoroughly and make yourself familiar with the meter before putting it into operation or work- ing with it.

  • Page 14: Safe Operation

    ® Safety pHotoFlex Safe operation CAUTION Danger of eye damage by visible and invisible LED radiation. In the cell shaft there are light emitting diodes (LED) of the 1M class. Do not look at the radiation using optical instruments. With normal, authorized use there is no hazard.

  • Page 15: Commissioning

    ® pHotoFlex Commissioning Commissioning Scope of delivery ®  Handheld meter, pHotoFlex  4 batteries, 1.5 V type AA (in the battery compartment)  1 empty cell 16 mm  2 empty cells 28 mm  Microfiber cloth to clean the meter ...
  • Page 16 ® Commissioning pHotoFlex Automatic switchoff The meter has an automatic switch-off function in order to save the bat- teries or rechargeable battery (see section 4.4). Display illumination During operation with batteries or rechargeable battery the meter auto- matically switches off the display illumination if no key is pressed for 30 seconds.

  • Page 17: Inserting/Exchanging The Batteries

    ® pHotoFlex Commissioning 3.2.2 Inserting/exchanging the batteries NOTE Make sure that the poles of the batteries are positioned correctly. The ± signs on the batteries must correspond to the ± signs in the bat- tery compartment. Open the battery compartment: –...

  • Page 18: Initial Commissioning

    ® Commissioning pHotoFlex Initial commissioning Perform the following activities:  For – Battery operation: Insert the batteries (see section 3.2.2) – Rechargeable battery operation: insert the rechargeable battery (see section 5.1.2) – line power operation and charging the rechargeable battery: connect the power pack (see section 3.2) –...

  • Page 19: Operation

    ® pHotoFlex Operation Operation Switching on the meter Switching on Press the <ON/OFF> key. For 30 seconds, Start menu appears with a selection of the measuring modes. The measuring mode last selected is highlighted. The status line indicates the meter designation and the version number of the software.

  • Page 20: Inserting A Cell

    ® Operation pHotoFlex Display illumination During operation with batteries or rechargeable battery the meter auto- with battery and matically switches off the display illumination if no key is pressed for rechargeable battery 30 seconds. The illumination is switched on again with the next key- operation stroke.
  • Page 21 ® pHotoFlex Operation Pull up the height adapter (3). The cell shaft is extended. Open the external light cover (4) of the cell shaft. Insert the 16 mm cell (marking points forward) so that it is po- sitioned on the bottom of the cell shaft. Close the external light cover (4).

  • Page 22: General Operating Principles

    ® Operation pHotoFlex For optimum measurement results, the cell must always be covered by the external light cover. Otherwise, external light can falsify the mea- surement result. General operating principles This section contains basic information on the operation of the ®...
  • Page 23 ® pHotoFlex Operation Menus and dialogs The menus for settings and dialogs in courses contain further sub- menus. The selection is made with the <> <> keys. The current selection is highlighted as white text on a black back- ground. ...

  • Page 24: Navigation Example 1: Setting The Language

    ® Operation pHotoFlex  Messages Information or instructions are marked by the i symbol. They can- not be selected. Example: pH & ORP The i symbol indicates i Buffer recognition TEC i Immerse sensor in buffer 1 info texts, e.g. messages, notes or instruc- tions Set temperature:...

  • Page 25: Navigation Example 2: Setting The Date And Time

    ® pHotoFlex Operation Select the Language menu with <> <>. The current selection is highlighted as white text on a black background. Open the setting of the Language with <START/ENTER>. System Deutsch Language Store Display Reset Interface Continue ... Select the required language with <> <>. Confirm the setting with <START/ENTER>.
  • Page 26 ® Operation pHotoFlex After a fall of the supply voltage (empty batteries or rechargeable bat- tery), the date and time are reset to 01.01.2003, 00:00 hours. Setting the date, time The data format can be switched from the display of day, month, year and date format (dd.mm.yy) to the display of month, day, year (mm/dd/yy or mm.dd.yy).
  • Page 27 ® pHotoFlex Operation Set the current Date as necessary. The setting is made similar- ly to that of the time. Change the date format as necessary. To make further settings, switch to the next higher menu level with <ESC>. Switch to the measured value display with <M> (short pres- sure).

  • Page 28: Menu Overview

    ® Operation pHotoFlex 4.3.5 Menu overview Photometry Measured parameter Concentration % Transmission Absorbance Programs Dilution Analysis timer Reset pH & ORP Measured parameter Calibration Calibration re- cord Cal. type NIST/DIN Calibration inter- 1 ... 999 d Unit for slope mV/pH Man.
  • Page 29 ® pHotoFlex Operation System Language Deutsch English Français Español Measured value Display memory RS232 download Data filter Filter PROG Date Delete i 4 of 1000 occupied i Filter: No filter Display Illumination Auto off Contrast 0 ... 100 % Brightness 0 ...

  • Page 30: System Settings (System Menu)

    ® Operation pHotoFlex System settings (System menu) The following instrument features and general functions can be found in the Configuration / System menu:  Language selection (Language)  Memory and database functions (Store)  Display settings (Display)  Restore basic settings (Reset) ...

  • Page 31: Measured Value Memory

    ® pHotoFlex Operation Menu item Setting Description Continue ... / 10, 20, 30, 40, The automatic switchoff Switchoff time 50 min, switches the meter off if 1, 2, 3, 4, 5, 10, no entry is made for a 15, 20, 24 h specified period of time (Switchoff time).
  • Page 32 ® Operation pHotoFlex Settings/functions Menu item Setting/func- Description tion Display Displays in pages all mea- surement datasets that cor- respond to the filter settings. Further options:  Scroll through the datas- ets with <> <>.  Output the displayed da- taset to the interface with <PRT>.

  • Page 33: Display

    ® pHotoFlex Operation 4.4.2 Display In the Configuration / System / Display menu, you set the display fea- tures:  Switching on/off the display illumination (Illumination)  Display contrast (Contrast) The settings can be found in the Configuration / System / Display menu. To switch to the Configuration menu, press the <MENU>...

  • Page 34: Date/Time

    ® Operation pHotoFlex 4.4.4 Date/time In the Configuration / System / Continue ... / Date/time menu, you set the system clock:  Current time (Time)  Current date (Date)  Format of the date display (Date format) The settings can be found in the Configuration / System / Continue ... Date/time menu.

  • Page 35: Photometry

    ® pHotoFlex Operation Photometry 4.5.1 General information Photometric measurements serve to determine chemical substances in liquid samples. For this determination, the substance to be determined has to be present in a form that is suitable for photometric measure- ment. At the same time, possible disturbing factors have to be exclud- Before measurement, the sample has to be pretreated in order to bring the substance to be determined into the form that is suitable for mea- surement and at the same time exclude disturbing factors.

  • Page 36: Settings For Photometric Measurements

    ® Operation pHotoFlex Preparatory activities Perform the following preparatory activities when you want to measure: Clean the cells before filling them with sample and also before measuring as necessary (see section 5.2.2). The cells must be absolutely clean and free of scratches. ®...

  • Page 37: Measuring The Concentration

    ® pHotoFlex Operation 4.5.3 Measuring the concentration Press the <M> key (long pressure) repeatedly until the Pho- tometry measuring mode is selected. Press the <M> key (short pressure) repeatedly until the mea- sured variable, Konzentration is selected. First concentration measure- Second and all further ®...
  • Page 38 ® Operation pHotoFlex Photometry \ Concentration i Insert sample i Start measurement with <START> 83: A6/25 MC NH4-N 16 mm 0.20 - 6.51 mg/l 01.02.05 15:12 Insert the cell (see section 4.2). Start the measurement with <START/ENTER>. Measurement is started. The result is displayed. Photometry \ Concentration A blank value measured by [BV]...
  • Page 39 ® pHotoFlex Operation Display indication when Display Explanation the measuring range is "< [Lower limit of measuring range]" Measuring range undercut. undercut or exceeded instead of the measured value Remedy: Use a test with a lower measuring range "> [Upper limit of measuring range]" Measuring range exceeded.

  • Page 40: Blank Value (Reagent Blank Value)

    ® Operation pHotoFlex 4.5.4 Blank value (reagent blank value) A blank value is required for every concentration measurement. For some programs (methods) for concentration measurement, the blank values are already stored in the meter. They are used automati- cally. For all other programs, the blank value has to be determined sep- arately before the first measurement.
  • Page 41 ® pHotoFlex Operation Using <> <> and <START/ENTER>, select and start the Measure blank value function. The menu-guided blank value measurement starts. Follow the instructions on the display. Measure blank value i 83: A6/25 MC i Cell = 16 mm i Insert blank sample Start measurement Insert a cell with blank sample (see section 4.2).

  • Page 42: Standard Adjustment (User Calibration)

    ® Operation pHotoFlex 4.5.5 Standard adjustment (user calibration) With some of the programs (methods) for concentration measurement, you can optimize the calibration curve stored in the meter with the aid of the Standard adjustment function. A standard adjustment is only valid if the deviation compared to the original calibration is no more than 30%.
  • Page 43 ® pHotoFlex Operation Enter nominal value mg/l Cu Enter the nominal value of the standard. Note: Enter the decimal separator with <START/ENTER>. Confirm the entered nominal value with <START/ENTER>. Insert a cell with standard (see section 4.2). Start the measurement of the standard with <START/ENTER>. After measuring, the result of the standard adjustment is dis- played and stored.

  • Page 44: Measuring The Absorbance/Transmission

    ® Operation pHotoFlex 4.5.6 Measuring the absorbance/transmission The transmission measurement is not described separately in the fol- lowing example as it operates in exactly the same way as the absor- bance measurement. The result of the measurement is displayed in % Transmission.

  • Page 45: Zero Adjustment

    ® pHotoFlex Operation Photometry \ Absorbance 0.532 16 mm 610 nm 01.02.05 15:12 4.5.7 Zero adjustment The zero adjustment, i. e. measuring and storing the absorbance of a cell filled with water, is necessary after the meter is switched on. Additionally, we recommend to carry out a zero adjustment if the ambi- ent temperature has changed.
  • Page 46 ® Operation pHotoFlex Zero adjust. i Insert zero cell (dist. water) Cell 16 mm Start measurement Insert the cell (see section 4.2) Set another cell with <> <> and <START/ENTER> as nec- essary. Start the measurement of the zero adjustment with <START/ ENTER>.

  • Page 47: Programs

    Updating programs Under www.WTW.com on the Internet, you can always find the latest software version with the newest programs and method data for your ®...

  • Page 48: Analysis Timer

    ® Operation pHotoFlex 4.5.9 Analysis timer Measuring according to analysis specifications often means there are waiting periods between the individual steps. These waiting periods (time intervals) are stored in the instrument with the program data for each program. The active Analysis timer function automatically reminds you to observe these time intervals by means of the menu guidance.

  • Page 49: Measuring Diluted Samples

    ® pHotoFlex Operation 4.5.11 Measuring diluted samples If the concentration of a test sample exceeds the measuring range of a method, you can dilute the sample by a factor 1 ... 99 so that the con- centration of the diluted test sample is within the measuring range of the method (see photometry analysis manual).

  • Page 50: Ph Value / Orp Voltage

    ® Operation pHotoFlex pH value / ORP voltage 4.6.1 General information You can measure the following variables:  pH value [ ]  ORP [mV] The RS232 interface is not galvanically isolated. When connecting an earthed PC/printer, measurements cannot be per- formed in earthed media as incorrect values would result.

  • Page 51: Measuring The Ph Value

    ® pHotoFlex Operation 4.6.2 Measuring the pH value Perform the preparatory activities according to section 4.6.1. Immerse the pH electrode in the test sample. pH & ORP \ pH 6.94 25.0 °C [AR] 01.02.05 15:12 Press the <M> key (short pressure) repeatedly until the mea- sured variable, pH is selected.

  • Page 52: Measuring The Orp Voltage

    ® Operation pHotoFlex 4.6.3 Measuring the ORP voltage ORP electrodes are not calibrated. However, you can check ORP elec- trodes using a test solution. Perform the preparatory activities according to section 4.6.1. Submerse the ORP electrode in the sample. pH & ORP \ ORP 25.0 °C [AR]...
  • Page 53 ® pHotoFlex Operation Settings/functions The settings can be found in the Configuration / pH & ORP menu. To switch to the Configuration menu, press the <MENU> key. Menu item Possible Description setting Measured parameter pH & ORP Calibration / Displays the calibration re- Calibration record cord of the last calibration.

  • Page 54: Calibration

    The pH values are valid for the specified temperature values. The temperature dependence of the pH values is taken into account during calibration. Buffer set Name on the pH values at display 25 °C WTW technical buffer solutions 2.00 4.01 7.00 10.01 NIST/DIN buffer solutions NIST/DIN 1.679 4.006...
  • Page 55 ® pHotoFlex Operation Calibration points Calibration can be performed using one, two or three buffer solutions in any order (single-point-, two-point or three-point calibration). The meter determines the following values and calculates the calibration line as follows: Determined val- Displayed calibration data ...
  • Page 56 ® Operation pHotoFlex Sample of a record 31.10.03 16:13 pHotoFlex Ser. no. 12345678 Calibration pH & ORP Calibration date 31.10.03 16:13:33 Calibration interval AutoCal TEC Buffer 1 4.01 Buffer 2 7.00 Buffer 3 10.01 Voltage 1 184.0 mV 24.0 °C Voltage 2 3.0 mV 24.0 °C...

  • Page 57: Carrying Out The Tec And Nist/Din Calibration

    (see section 4.6.5). Make sure the Cal. type is correctly set in the pH & ORP / Calibration menu (see section 4.6.4). For this procedure, use any one, two or three WTW technical buffer so- lutions in ascending or descending order.
  • Page 58 ® Operation pHotoFlex Using <> <>, select Continue and press <START/EN- TER>. The buffer is measured. The measured value is checked for stability (AutoRead). pH & ORP \ Calibration i Buffer value = 7.00 i U = 3 mV i Temperature = 24.8 °C Terminate AutoRead Wait for the end of the AutoRead measurement or accept the calibration value with <START/ENTER>.
  • Page 59 ® pHotoFlex Operation Continuing for two-point Thoroughly rinse the electrode with distilled water. calibration (Cal. type TEC) Immerse the electrode in buffer solution 2. If the Set temperature menu item appears, measure and enter the temperature of the buffer manually (measurement without temperature sensor).
  • Page 60 ® Operation pHotoFlex Continuing for three- Thoroughly rinse the electrode with distilled water. point calibration (Cal. type TEC) Immerse the electrode in buffer solution 3. If necessary, measure the temperature of buffer 3 manually, then enter and confirm it with <> <> and <START/EN- TER>...

  • Page 61: Storing

    ® pHotoFlex Operation Storing The meter has 1000 storage locations for measurement datsets. You can transmit measured values (datasets) to the data storage with the <STO> key. Each storage process transmits the current dataset to the interface at the same time. The number of storage locations that are still free is displayed in the Store menu.

  • Page 62: Storing Measurement Datsets

    ® Operation pHotoFlex 4.7.1 Storing measurement datsets Proceed as follows to transmit to the data storage and simultaneously output to the interface a measurement dataset: Press the <STO> key. The Store display appears. Store 996 free i 02.02.2005 11:24:16 0.00 mg/l PO4-P BV PROG 1 Store (ID: 1: Using <>...

  • Page 63: Filtering Measurement Datsets

    ® pHotoFlex Operation 4.7.2 Filtering measurement datsets The functions to display and download stored measurement datsets (see section 4.4.1) refer to all stored measurement datsets that corre- spond to the adjusted filter criteria. The settings can be found in the Configuration / System / Measured val- ue memory /Data filter menu.

  • Page 64: Displaying Measurement Datsets

    ® Operation pHotoFlex 4.7.3 Displaying measurement datsets You can read out stored datasets on the display. Only those datasets are displayed that correspond to the selected filter criteria (see section 4.7.2). Start reading out the data on the display in the menu, Configuration / System / Measured value memory / Display.

  • Page 65: Erasing Stored Measurement Datasets

    ® pHotoFlex Operation 4.7.5 Erasing stored measurement datasets You can erase the stored measurement datsets altogether if you do no longer need them. Erasing all measurement datsets is done in the menu, Configuration / System / Measured value memory / Delete. Erasing individual datasets is not possible.

  • Page 66: Configuring The Rs232 Interface

    ® Operation pHotoFlex Socket assignment 1 RTS 2 RxD 3 TxD 4 DTR 5 SG 6 CTS RS 232 4.8.2 Configuring the RS232 interface For an error-free data transmission, the RS232 interface should be set ® to the same transmission speed (Baud rate) on the pHotoFlex pH and PC/printer.
  • Page 67 ® pHotoFlex Operation Output format, CSV 4 5 6 0;01.12.11;14:18:07;1;81;O2;[BV];[2 + 1];166;mg/l;VALID;;; 14;03.12.11;07:41:51;3;;;;;24.8;%;VALID;557;nm;VALID Data Description Current number of the storage location (or "0" during output from mea- sured value display) Date Date of storing Time Time of storing adjusted ID Program number Only for the measured parameter, Concentration Citation form...

  • Page 68: Transmitting Data

    ® Operation pHotoFlex 4.8.4 Transmitting data The following table shows which data are transmitted to the interface in which way: Data Operation / description  Press <PRT>. Current measured value  Simultaneously with every manual storage process.  Display stored dataset and press <PRT>. Stored measured values ...

  • Page 69: Reset

    ® pHotoFlex Operation Reset You can reset (initialize) all system and measurement settings. 4.9.1 Resetting the system settings With the System / Reset function, all resettable settings are reset.  Settings for pH & ORP (see section 4.9.3)  Settings for Photometry (see section 4.9.2) ...

  • Page 70: Resetting The Photometry Settings

    ® Operation pHotoFlex 4.9.2 Resetting the photometry settings With the Photometry / Reset function, all photometry settings are reset. Setting Default settings PROG Cell size 16 mm Measured parameter Concentration Wavelength 436 nm Blank values all erased 4.9.3 Resetting the pH settings The calibration data are reset to the default settings together with the measuring parameters.

  • Page 71: Meter Information

     new instrument software  new programs (methods)  revisions of existing methods The current software version can be found on the Internet under www.WTW.com. The proceeding for updating the software can be found in the appendix (see section 11). ba75975e05...

  • Page 72: Administrating User-Defined Methods

    ® Operation pHotoFlex 4.12 Administrating user-defined methods User-defined programs can be  entered  read out  erased. To store user-defined programs (methods) in the meter, determine a calibration line for your method yourself and transmit the data of this ®...

  • Page 73: Administrating User-Defined Programs With A

    ® pHotoFlex Operation 4.12.1 Administrating user-defined programs with a terminal program Generally, a terminal program serves to establish a connection to a de- vice on a data interface and to communicate with the device via a con- sole on the display. Thus, it is also possible to send command lines.
  • Page 74 ® Operation pHotoFlex Storing user-defined Enter a command line according to the following scheme in the terminal programs program: U.500#14,Program No,Model,Cell [mm],Wave length [nm],MRB, MRE,E0,Slope,Resolution,Citation form,Unit,Blank required,Standard adjustment possible,Standard adjustment required Example: U.500#14,900,Test,16,436,0.0,2.0,0.0,1.0,0.01,test, mg/l,0,1,0 The individual data sections of the command line are separated by commas.
  • Page 75 ® pHotoFlex Operation Reading out user- To read out user-defined programs, enter a command line according to defined programs the following scheme in the terminal program: Read out all user- Read out one user- defined programs defined program Command line U.510 U.511#1,Program No Example...
  • Page 76 ® Operation pHotoFlex ba75975e05 10/2017...

  • Page 77: Maintenance, Cleaning, Disposal

    ® pHotoFlex Maintenance, cleaning, disposal Maintenance, cleaning, disposal Maintenance The meter is almost maintenance-free. The only maintenance task is replacing the batteries or rechargeable battery. 5.1.1 Inserting/exchanging the batteries NOTE Make sure that the poles of the batteries are positioned correctly. The ±...

  • Page 78: Retrofitting The Rechargeable Battery

    Therefore, they may not be disposed with the domestic waste. 5.1.2 Retrofitting the rechargeable battery NOTE Use original WTW rechargeable battery only. Together with the power pack the rechargeable battery is available as an accessory (see section 8.1). Open the battery compartment: –...

  • Page 79: Cleaning

    ® pHotoFlex Maintenance, cleaning, disposal If necessary, take four old batteries out of the battery compartment. Connect the cable of the rechargeable battery with the socket (3) on the bottom of the battery compartment and insert the re- chargeable battery in the battery compartment. Close the battery compartment and fix it with the screws.

  • Page 80: Cleaning The Cells

    ® Maintenance, cleaning, disposal pHotoFlex 5.2.2 Cleaning the cells Cells have to be clean, dry, and free of fingerprints. Therefore, clean them regularly: Clean the cells inside and out with hydrochloric acid or labora- tory soap. Rinse out several times with distilled water. Let them dry in the air.

  • Page 81: What To Do If

    – Operating condition undefined and <PRT> key or EMC load unallowed simultaneously. Error message, Cause Remedy Error – Instrument error – Repeat measurement 0, 8, 16, 16384 – Meter defective, send meter to WTW for repair and quote the error number ba75975e05 10/2017...

  • Page 82: Photometry

    ® What to do if... pHotoFlex Photometry Measuring range Cause Remedy undercut or exceeded – Program not suitable – Select program with suitable measuring range – Dilute the sample Obviously incorrect Cause Remedy measured values – Measurement disturbed by – Close the external light cover. external light –...
  • Page 83 ® pHotoFlex What to do if... Measured value display Cause Remedy ---- Electrode: (calibration error) – Diaphragm contaminated – Clean diaphragm – Membrane contaminated – Clean membrane – Moisture in the plug – Dry plug – Not enough electrolyte – Top up electrolyte –...
  • Page 84 ® What to do if... pHotoFlex Obviously incorrect Cause Remedy measured values pH electrode: – Not connected – Connect electrode – Cable broken – Replace cable or electrode – pH electrode unsuitable – Use suitable electrode – Temperature difference – Adjust temperature of buffer between buffer and test or sample solutions sample too high...

  • Page 85: Technical Data

    ® pHotoFlex Technical data Technical data General data Dimensions approx. 236 x 86 x 117 mm Weight approx. 0.6 kg (without batteries) Mechanical structure Type of protection IP 67 Electrical safety Protective class Test certificates CE, FCC Storage - 25 °C ... + 65 °C Ambient conditions Operation 0 °C ...
  • Page 86 ® Technical data pHotoFlex Guidelines EC guideline 89/336/EEC and norms used EN 61326-1/A3:2003 FCC Class A Instrument safety EEC guideline 73/23/EEC EN 61010-1 :2001 Climatic class VDI/VDE 3540 IP protection EN 60529:1991 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.

  • Page 87: Photometry

    ® pHotoFlex Technical data Photometry Optical measuring prin- LED photometer with filter ciple Interference filter 436 nm, 517 nm, 557 nm, 594 nm, 610 nm, 690 nm Accuracy: ± 2 nm Photometric 0.005 or better reproducibility Photometric resolution 0.001 Warm-up time none Measuring time approx.

  • Page 88: Ph Value / Orp Voltage

    ® Technical data pHotoFlex pH value / ORP voltage Measuring ranges, Variable Measuring range Resolution resolution - 2.00 ... + 16.00 0.01 U [mV] - 1000 ... + 1000 T [°C] - 5.0 ... + 100.0 T [°F] - 23.0 ... + 212.0 Manual Variable Range...

  • Page 89: Accessories, Options

    ® pHotoFlex Accessories, options Accessories, options Accessories Description Model Order no. LabStation with LSdata PC soft- LS Flex/430 251 301 ware, rechargeable battery and uni- versal power pack Rechargeable battery for pHotoFlex RB Flex/430 251 300 3 empty cuvettes, 28 x 60 mm LKS28-Set 251 302 Thermoprinter...
  • Page 90 ® Accessories, options pHotoFlex ® You can connect the P3001 to the pHotoFlex pH in the following Thermoprinter ways: Description Model Order ®  Connection P3001 - pHotoFlex – Cable AK 540/S 902 843  Connection P3001 - LabStation – Cable AK 3000 250 745 in conjunction with an adapter...

  • Page 91: Optional Extensions Of The Photoflex ® Ph

    ® pHotoFlex Accessories, options ® Optional extensions of the pHotoFlex The following optional extensions are available in specialist shops: Device/cable Model  Handscanner Datalogic DLC6065-M1 Barcode reader  Handscanner Datalogic Touch65 Connection cable Datalogic CAB-350 Barcode reader - LabSta- tion In addition to the barcode reader, a suitable connection cable is required to operate the barcode reader ba75975e05...
  • Page 92 ® Accessories, options pHotoFlex ba75975e05 10/2017...

  • Page 93: Lists

    ® pHotoFlex 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 94 NIST or DIN 19 266 pH value Second Slope (internat. k) SELV Safety Extra Low Voltage Slp. Slope determined with calibration Automatic pH calibration with WTW technical buf- fer solutions according to DIN 19267 Voltage ba75975e05 10/2017...
  • Page 95 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 val- ue) to the correct value or a value that is regarded as correct. Often, this expression is also used when the measuring system is adjusted at the same time (see adjusting).
  • Page 96 ® Lists pHotoFlex 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 The ORP is caused by oxidizing or reducing substances dissolved in water if these substances become effective on an electrode surface (e.
  • Page 97 ® pHotoFlex Lists Analysis specification The exact proceeding to carry out the detection procedure is described in the analysis specification. Blank value (reagent The evaluation of the photometric measurement always refers to the blank value) comparison value of a sample without the substance to be determined (reagent blank value).
  • Page 98 ® Lists pHotoFlex ba75975e05 10/2017...

  • Page 99: Index

    ® pHotoFlex Index Index .......35 ....... 18 Analysis specification Initial commissioning ..........48 ..........69 Analysis timer Initialization ....54 ..........33 Asymmetry of the pH electrode Interface ......16, 19 Automatic switchoff AutoRead ..........52 ..........8 Key functions .............51 ............8 Keys ..........40 Blank value ......
  • Page 100 ® Index pHotoFlex ............ 13 Safety ........15 Scope of delivery Single-point calibration ............ 58 Slope ............ 54 ..........10 Socket field Storage of measured values ....... 61 storage locations ........... 61 Storing ........... 19 Switching on System menu ..........33 General ......

  • Page 101: Firmware Update

    ® pHotoFlex Firmware update Firmware update ® General information You can update the firmware of the pHotoFlex pH to the latest version with the aid of a Personal Computer. You can find available firmware update files for your meter on the Inter- net.
  • Page 102 ® Firmware update pHotoFlex Then follow the instructions of the program. The programming procedure takes approx. 5 minutes. A final message appears after the successful programming procedure. The firmware update is completed with this. Disconnect the meter from the PC. The instrument is ready for operation.
  • Page 103 ® pHotoFlex ba75975e05 10/2017...
  • Page 104 For more information on how Xylem can help you, go to xyleminc.com. ® Service and Returns: Xylem Analytics Germany Sales GmbH & Co. KG Dr.-Karl-Slevogt-Str. 1 82362 Weilheim Germany Tel.: +49 881 183-325 Fax: +49 881 183-414 E-Mail wtw.rma@xyleminc.com Internet: www.WTW.com Xylem Analytics Germany GmbH Dr.-Karl-Slevogt-Str. 1 82362 Weilheim Germany...

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