Xylem WTW pHotoFlex pH User manual

QUICK START GUIDE
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pHotoFlex®pH
LED FILTER PHOTOMETER WITH INTEGRATED pH FUNCTION

pHotoFlex®pH
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Copyright ©2022 Xylem Analytics Germany GmbH
Printed in Germany.

pHotoFlex®pH Contents
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Contents
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Display and socket field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General operating principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Inserting a cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Photometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Maintenance, cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
General errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Photometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Photometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Part of the process of consequently improving our products is the continuous
further development of the range of photometric tests offered and the meter
irmware. All current data for the pHotoFlex®pH can be found on the Internet
under www.xylemanalytics.com:
Firmware
Method data
Analysis specifications
Operating manual
You can easily transfer new firmware to your instrument with the aid of the
AK 540/B cable and a PC. More detailed information can be found in the
detailed operating manual on the CD-ROM provided.

Safety pHotoFlex®pH
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Safety
Safety information Safety instructions point out dangers:
NOTE
indicates a possibly dangerous situation where goods might be
damaged if the actions mentioned are not taken.
Safe operation
Authorized use This meter is authorized exclusively for carrying out the following measure-
ments in the laboratory:
Analysis of substances in water and aqueous solutions
using round cells
Concentration measurement
Absorbance and transmission measurement
Only the operation and running of the meter according to the instructions and
technical specifications given in this operating manual is authorized (see
TECHNICAL DATA, page 20).
Any other use is considered unauthorized.
Display and socket field
Display The graphic display shows all information of the current measurement in the
measured value display. The illumination enables to read the display even in
the darkness.
WARNING
indicates a possibly dangerous situation that can lead to se-
rious (irreversible) injury or death if the safety instruction is
not followed.
CAUTION
indicates a possibly dangerous situation that can lead to
slight (reversible) injury if the safety instruction is not fol-
lowed.
CAUTION
Danger of eye damage by visible and invisible LED radiation.
In the cell shaft of the Turb 430 IR there are light emitting di-
odes (LEDs) of the 1M class.
Do not look at the radiation using optical instruments.
With normal, authorized use there is no hazard.

pHotoFlex®pH Power supply
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Socket field
Power supply
You can operate the meter either with batteries, rechargeable battery or a
power pack.
The LoBat display indicator appears when the batteries or rechargeable
battery is nearly discharged.
General operating principles
This section contains basic information on the operation of the
pHotoFlex®pH.
Measuring mode \ measured pa-
rameter
Measured value (with unit)
Program and citation form
Diameter of the cell and measur-
ing range
Status line with date and time
Photometry \ Concentration
1.29 mg/l
83: A6/25 MC NH4 -N
16 mm 0.20 - 8.00 mg/l
01.02.05 15:12
1 pH electrode
2 pH temperature sensor
3Power pack (9 V DC, see section 7.1)
4 Contact points for operation with the LabStation
5 RS232 (serial) interface
12345

General operating principles pHotoFlex®pH
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Operating modes Measurement
The display indicates measurement data in the measured value display
Calibration
The display indicates a calibration process with calibration information,
or a process to carry out a zero adjustment
Data transmission
The meter transmits measuring datasets or calibration records to the
serial interface
Configuration
The display indicates a menu with further menus, settings and functions
Keypad Select the measuring mode
<M> (long keystroke):
–Photometry
–pH & ORP
Select the measured parameter within a measuring
mode
<M> (short keystroke):
–pH & ORP: pH, ORP
–Photometry:
Concentration, Absorbance, % Transmission
Start calibration (measuring mode pH & ORP)
Start zero adjustment or blank value measurement via
the Photometry \ Adjustment menu
(measuring mode, Photometry)
<CAL/ZERO>
In the Photometry measuring mode: Select a program
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>
In the Photometry measuring mode, measured
parameter, Concentration
:
Switch over between available units <UNIT>
.

pHotoFlex®pH General operating principles
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Measured value
display
In the measured value display, you can
select a measuring mode with <M> (long pressure)
select a measured parameter in the active measuring mode (e. g. pH <−
>mV) with <M> (short pressure)
open the menu with <MENU>
switch to the higher Start menu with <ESC>.
Menus and dialogs The menus for settings and dialogs in procedures contain further submenus.
The selection is made with the <V><W>keys.
The current selection is highlighted as white text on a black background.
Menus
The name of the menu is displayed at the upper edge of the frame. Menus
are opened by confirming with <START/ENTER>. Example:
Switch the meter on/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
<V>, <W>
Switch to the next higher menu level /
cancel input
<ESC>
Keys with an additional number printed on are assigned doubly.
This enables to directly enter numbers in special menus. Thus,
you can, for example, conveniently enter the date and time via
the number keys.
PRT
Photometry
pH & ORP
System
Info
Configuration

General operating principles pHotoFlex®pH
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Settings
Settings are indicated by a colon. The current setting is displayed on the
right-hand side. With <START/ENTER>, the selection of the possible
settings is opened. Subsequently, the setting can be changed with
<V><W>and<START/ENTER>.
Example:
Functions
Functions are designated by the name of the function. They are
immediately carried out by confirming with <START/ENTER>.
Example: display the Calibration record function
(in the pH & ORP / Calibration menu).
Messages
Information or operating instructions are indicated by the isymbol. They
cannot be selected.
Example:
Language:English
Beep:Off
Illumination:On
Contrast:48 %
Temperature unit:°C
Switchoff time:30 min
System
Calibration record
Cal. type: AutoCal
TEC
Calibration interval:007 d
Unit for slope:mV/pH
i2.00 4.01 7.00 10.01
pH & ORP
iBuffer recognition TEC
iImmerse sensor in buffer 1
Set temperature:25 °C
Continue
pH & ORP
The iindicates
info texts, e.g.
messages, notes or
instructions

pHotoFlex®pH Initial commissioning
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Initial commissioning
Switching on the
meter
Press the <ON/OFF> key.
For a few seconds, the Start menu appears with a selection of the measuring
modes. The measuring mode last selected is highlighted.
After a few seconds, the meter automatically switches to the measuring mode
and measured parameter used last.
Setting the
language
The English language is set on delivery. Set a different language as follows:
Setting the date
and time
The date and time are set in the menu,
Configuration / System / Continue ... / Date/time.
Operation
Inserting a cell
To be able to insert cells in the pHotoFlex®pH, the cell shaft has to be
prepared to take in a cell.
1 Open the Configuration menu with the <MENU> key.
2 Open the Configuration / System / Language menu with the
<V><W>and <START/ENTER> keys.
3 Select the required language with the <V><W>keys and confirm
with <START/ENTER>.
4 Quit the menu with the <M> key.
1 Push the dust cover (1) upward.
The cell shaft for 28 mm cells is open.
Insert a 28 mm cell (see below)
Insert a 16 mm cell (see page 10)
1

Operation pHotoFlex®pH
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Inserting a 28 mm
cell
Inserting a 16 mm
cell
2 Insert the cell so that it is positioned on the bottom of the cell shaft.
The cell is ready to be measured.
1 Put the fold-out cell shaft (2) in an upright position until it locks into
place.
2 Pull up the height adapter (3).
The cell shaft is extended.
3 Open the external light cover (4) of the cell shaft.
2
3