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wtw pHotoFlex STD Manual

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OPERATING MANUAL
ba75958e07 11/2020
®
pHotoFlex
STD
LED FILTER PHOTOMETER

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Summary of Contents for wtw pHotoFlex STD

  • Page 1 OPERATING MANUAL ba75958e07 11/2020 ® pHotoFlex LED FILTER PHOTOMETER...
  • Page 2 ® pHotoFlex © Xylem Analytics Germany GmbH Copyright 2020 Printed in Germany. ba75958e07 11/2020...

  • Page 3: Table Of Contents

    ® pHotoFlex Contents Contents Overview ......... . 6 General features .
  • Page 4 ® pHotoFlex 4.5.8 Programs ........41 4.5.9 Analysis timer .
  • Page 5 ® pHotoFlex ® 7.1.1 pHotoFlex STD ......66 Photometry ........67 Accessories and options .

  • Page 6: Overview

    If you need further information or application notes, you can ob- tain the following material from WTW:  Application reports  Primers  Safety datasheets. You will find information on available literature in the WTW cata- log or on the Internet. ba75958e07 11/2020...

  • Page 7: Keypad

    ® pHotoFlex Overview Keypad Key functions Select the measured variable <M>: – Concentration – Absorbance – % Transmission Open the menu for adjustment measurements (blank values, zero adjustment) <CAL/ZERO> Select a program for concentration measurement <PROG> Open menus / confirm entries / start measurement <START/ENTER>...

  • Page 8: Display

    ® Overview pHotoFlex Output the display contents to the 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 9: Socket Field

    ® pHotoFlex Overview Socket field 1 Contacts for operation on the LabStation 2 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 operating manual).

  • Page 10: Safety

    ® Safety pHotoFlex Safety Safety information 2.1.1 Safety information in the operating manual This operating manual provides important information on the safe operation of the meter. Read this operating manual thoroughly and make yourself famil- iar with the meter before putting it into operation or working with it. The oper- ating manual must be kept in the vicinity of the meter so you can always find the information you need.

  • Page 11: Safe Operation

    ® pHotoFlex Safety 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. 2.2.1 Authorized use This meter is authorized exclusively for the following measurements: ...

  • Page 12: Commissioning

    ® Commissioning pHotoFlex 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 operating manual ...

  • Page 13: 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 battery compartment. Open the battery compartment: – Unscrew the two screws (1) on the underside of the meter, –...

  • Page 14: Initial Commissioning

    ® Commissioning pHotoFlex Initial commissioning Perform the following activities:  For – Battery operation: Insert the batteries (see section 3.2.2) – Operation with LabStation and battery pack: Insert the battery pack, connect the LabStation and insert the meter in the LabStation (see LabStation operating manual) ...

  • Page 15: 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 pa- rameter used last.

  • Page 16: Inserting A Cell

    ® Operation pHotoFlex Display illumina- During operation with batteries or battery pack the meter automatically tion with battery- switches off the display illumination if no key is pressed for 30 seconds. The powered operation illumination is switched on again with the next keystroke. Inserting a cell ®...
  • Page 17 ® pHotoFlex Operation Inserting a 16 mm Put the fold-out cell shaft (2) in an upright position until it locks into cell place. Pull upwards the height adapter (3). The cell shaft is extended. Open the external light cover (4) of the cell shaft. ba75958e07 11/2020...

  • Page 18: General Operating Principles

    ® Operation pHotoFlex Insert the 16 mm cell (marking points to the front) so that it is posi- tioned 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 cov- ered by the external light cover.

  • Page 19: Navigation

    ® pHotoFlex Operation 4.3.2 Navigation Measured value In the measured value display, you can display  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 subele- ments.

  • Page 20: Navigation Example 1: Setting The Language

    ® Operation pHotoFlex Measure blank value i83: A6/25 MC Celli = 16 mm i Insert blank sample Start measurement  Messages Information or operating instructions are designated by the i symbol. They cannot be selected. Measure blank value i83: A6/25 MC Celli = 16 mm i Insert blank sample Start measurement...
  • Page 21 ® pHotoFlex Operation System Language Deutsch Measured value memory Display Reset Interface Continue Select the Language menu with < > < >. The current selection is displayed in reverse video. Open the setting of the Language with <START/ENTER>. System Deutsch Language Measured value memory Display...

  • Page 22: Example 2 On Navigation: Setting The Date And Time

    ® Operation pHotoFlex 4.3.4 Example 2 on navigation: Setting the date and time The meter has a clock with a date function. The date and time are indicated in the status line of the measured value display. When storing measured val- ues and calibrating, the current date and time are automatically stored as well.
  • Page 23 ® pHotoFlex Operation Time 14:53:40 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.

  • Page 24: 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 i 4 of 1000 i occupied i Filter: No filter Display Illumination...
  • Page 25 ® 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 26: 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 27: Measured Value Memory

    ® pHotoFlex Operation Menu item Setting Explanation Continue ... / 10, 20, 30, 40, The automatic switchoff func- Switchoff time 50 min, tion switches the meter off if no 1, 2, 3, 4, 5, 10, entry is made for a specified pe- 15, 20, 24 h riod of time (Switchoff time).

  • Page 28: Display

    ® Operation pHotoFlex Menu item Setting/func- Explanation tion RS232 download Downloads to the interface all measurement datasets that corre- spond to the filter settings. The download is ordered according to the date and time. The process can take several minutes. To terminate the process prematurely, press <ESC>.

  • Page 29: Interface

    ® pHotoFlex Operation Menu item Setting Explanation Contrast 0 ... 100 % Changes the display contrast Brightness 0 ... 100 % Changes the display brightness 4.4.3 Interface In the Interface menu, you set the features of the interface:  Transmission speed (Baud rate) ...

  • Page 30: Photometry

    ® Operation pHotoFlex Menu item Setting Explanation Date format dd.mm.yy Settings of time and date. mm.dd.yy mm/dd/yy 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 measurement.

  • Page 31: Settings For Photometric Measurements

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

  • Page 32: Measuring The Concentration

    ® Operation pHotoFlex 4.5.3 Measuring the concentration If necessary, press the <M> key several times until the measured pa- rameter Concentration is selected. First concentration measure- Second and all further ® ment with the pHotoFlex concentration measurements Photometry \ Concentration Photometry \ Concentration i Select program i Select program...
  • Page 33 ® pHotoFlex Operation Photometry \ Concentration i Insert sample i Start 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 34: Blank Value (Reagent Blank Value)

    ® Operation pHotoFlex Examples: Photometry \ Concentration [BV] Orientation value 0.16 < 0.20 mg/l 83: A6/25 MC NH4-N 16 mm 0.20 - 6.51 mg/l 01.02.05 15:12 Photometry \ Concentration [BV] Measurement signal cannot ---- be evaluated < 0.20 mg/l 83: A6/25 MC NH4-N 16 mm 0.20 - 6.51 mg/l...
  • Page 35 ® pHotoFlex Operation Blank value mea- If necessary, press the <M> key several times until the measured pa- surement rameter Concentration is selected. Select a program with <PROG> as necessary. The following measurement of the blank value applies only to the selected program.

  • Page 36: Standard Adjustment (User Calibration)

    ® Operation pHotoFlex Measure blank value i 83: A6/25 MC Celli = 16 mm iAbsorbance = 0.301 i Blank value mea- surement successful! Confirm the result with <START/ENTER>. The blank value measurement is completed. The meter is ready to measure. Discard the result with <ESC>.
  • Page 37 ® pHotoFlex Operation Photometry \ Adjustment Zero adjust. Measure blank value Delete blank value Standard adjustment Open the Standard adjustment menu with < > < > and <START/ ENTER>. If data of a standard adjustment are already available, the data of the last standard adjustment are displayed.
  • Page 38 ® Operation pHotoFlex Measure standard i 304: Cu-1 TP Celli = 10 mm i 0.600 mg/l Cu: 2.000 (93.2%) Accept Confirm the result with <START/ENTER>. The standard adjustment is completed. The meter is ready to measure. Discard the result with <ESC>. Subsequently, carry out a new standard adjustment.

  • Page 39: Absorbance / % Transmission, Measuring

    ® pHotoFlex Operation 4.5.6 Absorbance / % Transmission, measuring The transmission measurement is not described separately in the following example as it operates in exactly the same way as the absorbance measurement. The result of the measurement is dis- played in % Transmission. Press the <M>...

  • Page 40: Zero Adjustment

    ® Operation pHotoFlex 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 ambient temperature has changed.

  • Page 41: Programs

    ® pHotoFlex Operation 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 neces- sary. Start the measurement of the zero adjustment with <START/EN- TER>.

  • Page 42: Analysis Timer

    Updating Go to www.WTW.com to always find the latest software version with the new- ® programs est programs and method data for your pHotoFlex STD (see section 11).

  • Page 43: Measuring Diluted Samples

    ® pHotoFlex Operation The Timer function is started in the Configuration / Timer menu by entering a time interval. 4.5.11 Measuring diluted samples If the concentration of a test sample exceeds the measuring range of a meth- od, you can dilute the sample by a factor 1 ... 99 so that the concentration of the diluted test sample is within the measuring range of the method (see pho- tometry analysis manual).

  • Page 44: Data Memory

    ® Operation pHotoFlex in the form [x + 1]. Data memory 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 interface at the same time.

  • Page 45: 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 i 01.12.2011 15:10:11 PROG 86 1.12 mg/l NH4-N [BV] assign ID:...

  • Page 46: 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 correspond to the specified filter criteria. The settings are in the menu, Configuration / System / Measured value mem- ory / Data filter.

  • Page 47: Displaying Measurement Datasets

    ® pHotoFlex Operation 4.6.3 Displaying measurement datasets You can read out stored datasets to the display. Only those datasets are dis- played 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 48: 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 / Sys- tem / Measured value memory / Delete. Erasing individual datasets is not possible.

  • Page 49: Data Transmission With The Pc Software Ls Data

    ® pHotoFlex Operation  Connection to the PC – Connecting cable AK 540/B (accessory, see chapter 8) – LabStation LS Flex/430 (accessory, see chapter 8) Establishing a ® Connect the pHotoFlex STD to the PC via the LabStation LS Flex/ connection 430 (see operating manual LS Flex/430).

  • Page 50: Establishing The Connection To A Printer

    ® Operation pHotoFlex Transmitting data (see section 4.7.6). 4.7.4 Establishing the connection to a printer Via the RS 232 interface, you can transmit data to an external printer. Suitable printers  P3002 (see section 8 A CCESSORIES AND OPTIONS  P3001 (no longer available as accessory) Socket assign- 1 RTS ment (RS232)

  • Page 51: Configuration For The Data Transmission To A Terminal

    ® pHotoFlex Operation 4.7.5 Configuration for the data transmission to a terminal program Via the RS232 interface you can also transmit data to a PC with the aid of a so-called terminal program. When using the terminal program "HyperTerminal", you can load the transfer data automatically with the *.ht file stored on the CD.

  • Page 52: Transmitting Data To A Printer Or Terminal Program

    ® Operation pHotoFlex 4.7.6 Transmitting data to a printer or terminal program With a printer connected or a connection to a terminal program existing, you can transmit data in the following ways: Data Operation / description Individual data  Display the data and press <PRT>. The data being shown on the display are transmit- (e.g.
  • Page 53 ® pHotoFlex Operation Example, The CSV output format delivers datasets separated by ";". output format CSV The data are output in the following order: 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 1 Current number of the storage location (or "0" during output from measured value display) 2 Date of storing 3 Time of storing 4 Adjusted ID...

  • Page 54: 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 55: Meter Information

     new instrument software  new programs (methods)  revisions of existing methods The current software version can be found on the Internet at www.WTW.com. The proceeding for updating the software is given in the appendix (see section 11). ba75958e07...

  • Page 56: 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 calibra- tion line for your method yourself and transmit the data of this calibration line ®...

  • Page 57: Administrating User-Defined Programs With A Terminal

    ® pHotoFlex Operation 4.11.2 Administrating user-defined programs with a terminal program Generally, a terminal program serves to establish a connection to a device on a data interface and to communicate with the device via a console on the dis- play. Thus, it is also possible to send command lines.
  • Page 58 ® 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 59 ® pHotoFlex Operation Reading out user- To read out user-defined programs, enter a command line according to the defined programs following scheme in the terminal program: Read out all user-de- Read out one user-de- fined programs fined program Command line U.510 U.511#1,Program No Example...

  • Page 60: Maintenance, Cleaning, Disposal

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

  • Page 61: Retrofitting The Battery Pack

    5.1.2 Retrofitting the battery pack NOTE Use original WTW battery packs only. Together with the power pack the battery pack is available as an accessory (see section 8.1). Open the battery compartment: –...

  • Page 62: Cleaning

    ® Maintenance, cleaning, disposal pHotoFlex If necessary, take four old batteries out of the battery compartment. Connect the cable of the battery pack with the socket (3) on the bot- tom of the battery compartment and insert the battery pack in the bat- tery compartment.

  • Page 63: Cleaning The Cells

    ® pHotoFlex Maintenance, cleaning, disposal 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 laboratory soap. Rinse out several times with distilled water. Let them dry in the air.

  • Page 64: What To Do If

    – Operating condition undefined <PRT> keys simultaneously. or EMC load unallowed 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 ba75958e07 11/2020...

  • Page 65: Photometry

    ® pHotoFlex What to do if... Photometry Measuring range Cause Remedy exceeded or – Program not suitable – Select program with suitable undershot measuring range – Dilute the sample Obviously incor- Cause Remedy rect measured val- – Measurement disturbed by –...

  • Page 66: Technical Data

    ® Technical data pHotoFlex 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 certificates CE, FCC Ambient Storage - 25 °C ...

  • Page 67: Photometry

    ® pHotoFlex Technical data Serial Connection of the cable AK 540/B or AK 540/S interface Baud rate Adjustable: 1200, 2400, 4800, 9600, 19200 Baud Type RS232 Data bits Stop bits Parity None Handshake RTS/CTS Cable length Max. 15 m Guidelines EC directive 89/336/EEC and norms used EN 61326-1/A3:2003...
  • Page 68 ® Technical data pHotoFlex Transmission: 1 ... 150 % User-defined programs Resolution 1.00 ... 9.99 0.01 % Transmission 10.0 ... 150 0.1 % ba75958e07 11/2020...

  • Page 69: Accessories And Options

    ® pHotoFlex Accessories and options Accessories and options Accessories 8.1.1 Meter accessories Description Model Order LabStation with LSdata PC software, bat- LS Flex/430 251 301 tery pack and universal power pack Batteries for pHotoFlex RB Flex/430 251 300 25 empty round cells (16 mm) RK 14/25 250 621 3 empty round cells (28 mm)
  • Page 70 ® Accessories and options pHotoFlex ® You can connect the P3001 thermoprinter to the pHotoFlex STD in the fol- Thermoprinter lowing ways: Description Model Order  Connection P3001 - – Cable AK 540/S 902 843  Connection P3001 - LabStation –...

  • Page 71: 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 required to operate the bar code reader ba75958e07 11/2020...

  • Page 72: Lists

    ® Lists pHotoFlex Lists This chapter provides additional information and orientation aids. Abbreviations The list of abbreviations explains the indicators and the abbreviations that ap- pear on the display and in the manual. Specialist terms 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.
  • Page 73 ® pHotoFlex Lists Citation forms Different forms of representing a measured concentration value that can be derived from each other. The method for determining phosphate provides, for example, a measured value for phosphorous P. This measured value can also be quoted in other citation forms such as PO4, PO4-P or P2O5.
  • Page 74 ® Lists pHotoFlex ba75958e07 11/2020...

  • Page 75: Index

    ® pHotoFlex Index Index ......44 Measurement dataset ........19 Menus (navigation) ..39 Absorbance / % Transmission, measuring ..........20 Messages .......30 Analysis specification ........... 30 Method ..........42 Analysis timer ....12, 15 Automatic switch-off function ..........19 Navigation ..........34 Blank value ......35 Blank value measurement ........
  • Page 76 ® Index pHotoFlex ba75958e07 11/2020...

  • Page 77: Firmware Update

    ® pHotoFlex Firmware update Firmware update ® General informa- With the aid of a PC, you can update the firmware of the pHotoFlex STD to tion the latest version. You can find available firmware update files for your meter on the Internet. The update program contains: ...
  • Page 78 ® 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 79 ® pHotoFlex ba75958e07 11/2020...
  • Page 80 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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