Xylem wtw pHotoFlex pH User manual

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

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pHotoFlex®pH
Copyright ©2018 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Maintenance, cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
General errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Photometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Photometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
firmware. All current data for the pHotoFlex®pH can be found on the Internet
under www.WTW.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
Target group The meter was developed for work in the field and in the laboratory.
We assume that, as a result of their professional training and
experience, the operators will know the necessary safety precautions
to take when handling the chemicals of photometric test sets.
The personnel responsible for the commissioning, operation and
maintenance must have the necessary qualifications for this work. If the
personnel do not have the required skills they have to be instructed.
Furthermore, it must be ensured that the personnel read and
completely understand the present operating manual.
Safety instructions Important safety instructions are highlighted in this operating manual.
They are indicated by the warning symbol (triangle) in the left column.
The signal word (e.g. "Caution") indicates the level of danger:
CAUTION
indicates a possibly dangerous situation that can lead to slight
(reversible) injury if the safety instruction is not followed.
NOTE
indicates a possibly dangerous situation where goods might be
damaged if the actions mentioned are not taken.
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.
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.
Measuring mode \ measured
parameter
Measured value (with unit)
Program and citation form
Diameter of the cell and
measuring range
Status line with date and time
Photometry \ Concentration
1.29 mg/l
2: A5/25 MC NH4 -N
16 mm 0.20 - 8.00 mg/l
01.02.05 15:12

pHotoFlex®pH Power supply
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Socket field
Identifying the
connectors
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.
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
12345
1pH electrode
2pH temperature sensor
3Power pack (9 V DC, see page 22)
4Contacts for operation on the LabStation
5RS232 serial interface

General operating principles pHotoFlex®pH
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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>
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>
.
PRT

pHotoFlex®pH General operating principles
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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.
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 <><>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:
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 <><>and<START/ENTER>.
Example:
Highlight menu items or selection /
set values
<>, <>
Switch to the next higher menu level /
cancel input
<ESC>
Photometry
pH & ORP
System
Info
Configuration

General operating principles pHotoFlex®pH
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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 Operation
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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.
1Open the Configuration menu with the <MENU> key.
2 Open the Configuration / System / Language menu with the
<><>and <START/ENTER> keys.
3Select the required language with the <><>keys and
confirm with <START/ENTER>.
4 Quit the menu with the <M> key.
1Push 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
2Insert the cell so that it is positioned on the bottom of the cell
shaft.
The cell is ready to be measured.
1Put the fold-out cell shaft (2) in an upright position until it locks
into place.
2Pull up the height adapter (3).
The cell shaft is extended.
3Open the external light cover (4) of the cell shaft.
2
3