wtw pHotoFlex STD Operating Manual
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wtw pHotoFlex STD Operating Manual

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OPERATING MANUAL
ba75958d05 10/2017
®
pHotoFlex
STD
LED FILTER PHOTOMETER

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Summary of Contents for wtw pHotoFlex STD

  • Page 1 OPERATING MANUAL ba75958d05 10/2017 ® pHotoFlex LED FILTER PHOTOMETER...
  • Page 2 ® pHotoFlex © Copyright 2017 Xylem Analytics Germany GmbH Printed in Germany. ba75958d05 10/2017...

  • Page 3: Table Of Contents

    ® pHotoFlex Contents Contents Overview ........7 General features .
  • Page 4 ® Contents pHotoFlex Photometry ........33 4.5.1 General information .
  • Page 5 ® pHotoFlex Contents Technical data ....... . 69 General data ....... . . 69 ®...
  • Page 6 ® Contents pHotoFlex ba75958d05 10/2017...

  • Page 7: Overview

    Display Cell shaft (folded out for a 16 mm cell to be inserted) Socket field If you need further information or application notes, you can obtain the following material from WTW:  Application reports  Primers  Safety datasheets. ba75958d05...

  • Page 8: Keypad

    ® Overview pHotoFlex You will find information on available literature in the WTW catalog or via the Internet. Keypad Key functions Select the measured variable <M>: – Concentration – Absorbance – % Transmission Open the menu for adjustment measurements (blank values, zero adjustment) <CAL/ZERO>...

  • Page 9: Display

    ® pHotoFlex Overview Switch the meter on or off <ON/OFF> Output display contents to RS232 interface (e.g. print) <PRT> Open the Store menu: <STO> Quick storing: 2 x <STO> Highlight menu items or selection Set values <>,<> Switch to the next higher menu level / cancel input <ESC>...

  • Page 10: Socket Field

    ® Overview pHotoFlex Socket field Identifying the Contacts for operation on the LabStation connectors RS232 serial interface LabStation (optional) The LabStation, which is available as an accessory, enables you to use ® the pHotoFlex STD conveniently in the laboratory (see LabStation op- erating manual).

  • Page 11: Safety Instructions

    ® pHotoFlex Safety instructions Safety instructions 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 12: Safe Operation

    ® Safety instructions 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 13: Commissioning

    ® pHotoFlex Commissioning Commissioning Scope of delivery ®  Handheld meter pHotoFlex  4 batteries 1.5 V type AA  1 empty cell 16 mm  2 empty cells 28 mm  Microfiber cloth to clean the meter  Compact operting manual ...

  • Page 14: Inserting/Exchanging The Batteries

    ® Commissioning pHotoFlex 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 15: Initial Commissioning

    ® pHotoFlex Commissioning Initial commissioning Perform the following activities:  For – Battery operation: Insert the batteries (see section 3.2.2) – Operation with LabStation and rechargeable battery: Insert the rechargeable battery, connect the LabStation and insert the meter in the LabStation (see LabStation operating manual) ...
  • Page 16 ® Commissioning pHotoFlex ba75958d05 10/2017...

  • Page 17: Operation

    ® pHotoFlex Operation Operation Switching on the meter Switching on Press the <ON/OFF> key. The Start menu appears for 30 seconds. The status line indicates the meter designation and the version number of the software. Start Photometry i pHotoFlex V 1.70 After a few seconds the meter automatically switches to the measured parameter used last.

  • Page 18: Inserting A Cell

    ® Operation pHotoFlex Inserting a cell ® To be able to insert cells in the pHotoFlex STD, the cell shaft has to be prepared to take in a cell. Push the dust cover (1) upward. The cell shaft for 28 mm cells is open. ...
  • Page 19 ® pHotoFlex Operation Inserting a 16 mm cell Put the fold-out cell shaft (2) in an upright position until it locks into place. Pull upwards the height adapter (3). The cell shaft is extended. Open the external light cover (4) of the cell shaft. ba75958d05 10/2017...

  • Page 20: General Operating Principles

    ® Operation pHotoFlex Insert the 16 mm cell (marking points to the front) so that it is positioned on the bottom of the cell shaft. Close the external light cover (4). The cell is ready to be measured. For optimum measurement results, the cell must always be covered by the external light cover.

  • Page 21: Navigation

    ® pHotoFlex Operation 4.3.2 Navigation Measured value display In the measured value display, you can  select the measured parameter with <M>: – Concentration – Absorbance – % Transmission  open the menu with <MENU>  switch to the superordinate Start menu with <ESC>. Menus and dialogs The menus for settings and dialogs in procedures contain further sub- elements.

  • Page 22: Example 1 On Navigation: Setting The Language

    ® Operation pHotoFlex Measure blank value i83: A6/25 MC Celli = 16 mm iInsert blank sample Start measurement  Messages Information or operating instructions are designated by the i sym- bol. They cannot be selected. Measure blank value i83: A6/25 MC Celli = 16 mm iInsert blank sample Start measurement...

  • Page 23: Example 2 On Navigation: Setting The Date And Time

    ® pHotoFlex Operation System Language English Measured value memory Display Reset Interface Continue 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 English Language...
  • Page 24 ® Operation pHotoFlex The correct setting of the date and time and date format is important for the following functions and displays:  Current date and time  Calibration date  Identification of stored measured values. Therefore, check the time at regular intervals. 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.
  • Page 25 ® pHotoFlex Operation Enter the time using the number keys. The digit to be changed is displayed underlined. In the case of wrong entries, you can cancel the procedure with <ESC>. After canceling with <ESC>, it is possible to enter all digits once again. The new digits are only taken over by confirming with <START/EN- TER>.

  • Page 26: Menu Overview

    ® Operation pHotoFlex 4.3.5 Menu overview Photometry Meas. param. Concentration % Transmission Absorbance Programs Dilution Analysis timer Reset Timer System Language Deutsch English Français Español Measured value Display memory RS232 download Data filter Filter PROG Date Delete ioccupied: 4 of 1000 iFilter:No filter Display Illumination...
  • Page 27 ® pHotoFlex Operation System Interface Baud rate 1200 (continued) 2400 4800 9600 19200 Output format ASCII Continue ... / Time hh:mm:ss Date/time Date Date format dd.mm.yy mm.dd.yy mm/dd/yy Continue ... / 10, 20, 30, 40, 50 min, Switchoff time 1, 2, 3, 4, 5, 10, 15, 20, 24 h Continue ...

  • Page 28: 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 29: Measured Value Memory

    ® pHotoFlex Operation Menu item Setting Explanation Continue ... / 10, 20, 30, 40, The automatic switchoff Switchoff time 50 min, function switches the me- 1, 2, 3, 4, 5, 10, ter off if no entry is made 15, 20, 24 h for a specified period of time (Switchoff time).
  • Page 30 ® Operation pHotoFlex Settings/functions Menu item Setting/func- Explanation 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 31: 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 32: 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 33: 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 34: Settings For Photometric Measurements

    ® Operation pHotoFlex Preparatory activities Perform the following preparatory activities when you want to measure: Clean the exterior of the cells before filling them with sample and also before measuring as necessary (see section 5.2.2). ® For measurement, place the pHotoFlex STD on a horizontal surface.

  • Page 35: Measuring The Concentration

    ® pHotoFlex Operation 4.5.3 Measuring the concentration If necessary, press the <M> key several times until the mea- sured parameter Concentration is selected. First concentration measure- Second and all further concen- ® ment with the pHotoFlex tration measurements Photometry \ Concentration Photometry \ Concentration iSelect program iSelect program...
  • Page 36 ® Operation pHotoFlex Photometry \ Concentration iInsert sample iStart measurement with <START> 83: A6/25 MC NH4-N 16 mm 0.20 - 8.00 mg/l 01.12.11 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 37 ® 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 38: 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 39 ® pHotoFlex Operation Measure blank value i83: A6/25 MC Celli = 16 mm iInsert blank sample Start measurement Insert a cell with blank sample (see section 4.2). Start the measurement of the blank value with <START/EN- TER>. After measuring, the result of the blank value measurement is displayed and stored.

  • Page 40: 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 41 ® 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 42: Absorbance / % Transmission, Measuring

    ® Operation pHotoFlex 4.5.6 Absorbance / % Transmission, measuring 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 43: Zero Adjustment

    ® pHotoFlex Operation Photometry \ Absorbance 0.532 16 mm 610 nm 01.12.11 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 44 ® Operation pHotoFlex Zero adjust. iInsert 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 45: 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 46: Analysis Timer

    ® Operation pHotoFlex 4.5.9 Analysis timer Measuring according to analysis instructions 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 47: 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 48: Data Storage

    ® Operation pHotoFlex Data storage The meter has 100 storage locations for measurement datasets. You can transmit measured values (datasets) to the data memory with the <STO> key. Each data storage process transmits the current dataset to the inter- face at the same time. The number of memory locations that are still free is displayed in the Store menu.

  • Page 49: Storing Measurement Datasets

    ® pHotoFlex Operation 4.6.1 Storing measurement datasets Proceed as follows to transmit to the data memory and simultaneously output to the interface a measurement dataset: Press the <STO> key. The Store display appears. Store 996 free i01.12.2011 15:10:11 PROG 86 1.12 mg/l NH4-N [BV] assign ID:...

  • Page 50: Filtering Measurement Datasets

    ® Operation pHotoFlex 4.6.2 Filtering measurement datasets The functions to display and download stored measurement datasets (see section 4.4.1) refer to all stored measurement datasets that corre- spond to the specified filter criteria. The settings are in the Configuration / System / Measured value mem- ory / Data filter menu.

  • Page 51: Displaying Measurement Datasets

    ® pHotoFlex Operation 4.6.3 Displaying measurement datasets You can read out stored datasets to the display. Only those datasets are displayed that correspond to the selected filter criteria (see section 4.6.2). Start reading out the data to the display in the menu, Configuration / System / Measured value memory / Display.

  • Page 52: Erasing Stored Measurement Datasets

    ® Operation pHotoFlex 4.6.5 Erasing stored measurement datasets You can erase the stored measurement datasets altogether if you no longer need them. Erasing all measurement datasets is done in the menu, Configuration / System / Measured value memory / Delete. Erasing individual datasets is not possible.

  • Page 53: Configuring The Rs232 Interface

    ® pHotoFlex Operation Socket assignment 1 RTS 2 RxD 3 TxD 4 DTR 5 SG 6 CTS RS 232 4.7.2 Configuring the RS232 interface For an error-free data transmission, the RS232 interface should be set ® to the same transmission speed (Baud rate) for the pHotoFlex and PC/printer.
  • Page 54 ® Operation pHotoFlex 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 Explanation Current number of the storage location (or "0" during output from measured value display) Date Date of storing Time Time of storing adjusted ID Program number only for the measured parameter, Concentration Citation form only for the measured parameter, Concentration...

  • Page 55: Transmitting Data

    ® pHotoFlex Operation 4.7.4 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 56: Reset

    ® Operation pHotoFlex Reset You can reset (initialize) all system and measurement settings. 4.8.1 Resetting the system settings With the System / Reset function, all resettable settings are reset.  Settings for Photometry (see section 4.8.2)  System settings System setting Default settings Baud rate 4800 Baud...

  • Page 57: 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 is given in the appendix (see section 11). ba75958d05...

  • Page 58: Administrating User-Defined Methods

    ® Operation pHotoFlex 4.11 Administrating user-defined methods 4.11.1 Options for method administration 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 59: Administrating User-Defined Programs With A

    ® pHotoFlex Operation 4.11.2 Administrating user-defined programs with a terminal pro- gram 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 60 ® Operation pHotoFlex The individual data sections of the command line are separated by commas. The dot "." has to be used as a decimal separator within a data section. Enter the command line. Finish the command line with Enter. ®...
  • Page 61 ® pHotoFlex Operation Finish the command line with Enter. ® The data is transmitted to the pHotoFlex STD. The requested data is displayed on the terminal as the result. After a successful transmission, the terminal program writes "!>". After a failed transmission, the terminal program writes "!>". ba75958d05 10/2017...
  • Page 62 ® Operation pHotoFlex ba75958d05 10/2017...

  • Page 63: 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 64: 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 65: Cleaning

    ® pHotoFlex Maintenance, cleaning, disposal 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. Dispose of used batteries according to the local regulations of your country.

  • Page 66: 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 67: What To Do If

    – Operating condition undefined and <PRT> keys 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 ba75958d05 10/2017...

  • Page 68: 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 69: Technical Data

    ® pHotoFlex Technical data Technical data General data ® 7.1.1 pHotoFlex 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 mark CE, FCC Ambient Storage - 25 °C ...

  • Page 70: Photometry

    ® Technical data pHotoFlex Applicable directives EC directive 89/336/EEC and standards EN 61326-1/A3:2003 FCC Class A Meter safety EEC directive 73/23/EEC EN 61010-1 :2001 Climatic class VDI/VDE 3540 IP protection class EN 60529:1991 Photometry Optical measuring prin- LED photometer with filter ciple Interference filter 436 nm, 517 nm, 557 nm, 594 nm, 610 nm, 690 nm...

  • Page 71: Accessories And Options

    ® pHotoFlex Accessories and options Accessories and options Accessories 8.1.1 Meter 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 25 empty round cells (16 mm) RK 14/25 250 621...
  • Page 72 ® Accessories and options pHotoFlex You can connect the P3001 thermoprinter to the in the following ways: Thermoprinter Description Model Order  Connection P3001 - – Cable AK 540/S 902 843  Connection P3001 - LabStation – Cable AK 3000 250 745 in conjunction with an adapter Specialist shops...

  • Page 73: Bar Code Reader

    ® pHotoFlex Accessories and options Bar code reader The following optional extensions are available in specialist shops: Device/cable Model  Handscanner Bar code reader Datalogic DLC6065-M1  Handscanner Datalogic Touch65 Connection cable Datalogic CAB-350 Bar code reader - LabStation In addition to the bar code reader, a suitable connection cable is re- quired to operate the bar code reader ba75958d05 10/2017...
  • Page 74 ® Accessories and options pHotoFlex ba75958d05 10/2017...

  • Page 75: 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 76 ® Lists pHotoFlex Citation forms Different forms of representing a measured concentration value that can be derived from each other. The method to determine phosphate, e.g. delivers a measured value for phosphorous P. This measured value can be alternatively quoted in the citation forms, PO4, PO4-P or P2O5.

  • Page 77: Index

    ® pHotoFlex Index Index ....... 48 Storage locations ......48 Measurement dataset ..42 Absorbance / % Transmission, measuring ........21 Menus (navigation) .......33 Analysis specification ..........22 Messages ..........46 Analysis timer ........... 33 Method ....13, 17 Automatic switch-off function ..........21 Navigation ..........38 Blank value...
  • Page 78 ® Index pHotoFlex ........43 Zero adjustment ba75958d05 10/2017...

  • Page 79: Firmware Update

    ® pHotoFlex Firmware update Firmware update ® General information You can update the firmware of the pHotoFlex STD to the latest ver- sion with the aid of a Personal Computer. You can find available firmware update files for your meter on the Inter- net.
  • Page 80 ® Firmware update pHotoFlex Then follow the instructions of the program. The programming process takes approx. 5 minutes. A terminatory message is displayed after a successful pro- gramming process. The firmware update is now completed. Disconnect the meter from the PC. The meter is ready for operation.
  • Page 81 ® pHotoFlex ba75958d05 10/2017...
  • Page 82 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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