Xylem WTW pHotoFlex Turb User manual

OPERATING MANUAL
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pHotoFlex®Turb
LED FILTER PHOTOMETER WITH INTEGRATED TURBIDITY MEASUREMENT AND pH
FUNCTION

2ba75976e07 09/2021
pHotoFlex®Turb
Copyright © 2021 Xylem Analytics Germany GmbH
Printed in Germany.

pHotoFlex®Turb Contents
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pHotoFlex®Turb - Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 General features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.4 Socket field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.5 LabStation (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1.1 Safety information in the operating manual . . . . 11
2.1.2 Safety signs on the meter . . . . . . . . . . . . . . . . . 11
2.1.3 Further documents providing safety information 11
2.2 Safe operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.2 Requirements for safe operation . . . . . . . . . . . . 12
2.2.3 Unauthorized use . . . . . . . . . . . . . . . . . . . . . . . 12
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2.1 General information . . . . . . . . . . . . . . . . . . . . . . 13
3.2.2 Inserting/exchanging the batteries . . . . . . . . . . 15
3.3 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2 Inserting a cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.3 General operating principles . . . . . . . . . . . . . . . . . . . . . 20
4.3.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . 20
4.3.2 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.3.3 Navigation example 1: Setting the language . . . 22
4.3.4 Example 2 on navigation: Setting the date and
time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3.5 Menu overview . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.4 System settings (System menu) . . . . . . . . . . . . . . . . . . 28
4.4.1 Measured value memory . . . . . . . . . . . . . . . . . . 29
4.4.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.4.3 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.4.4 Date/time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.5 Photometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.5.1 General information . . . . . . . . . . . . . . . . . . . . . . 31

Contents pHotoFlex®Turb
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4.5.2 Settings for photometric measurements . . . . . . 33
4.5.3 Measuring the concentration . . . . . . . . . . . . . . . 33
4.5.4 Blank value (reagent blank value) . . . . . . . . . . . 36
4.5.5 Standard adjustment (user calibration) . . . . . . . 38
4.5.6 Absorbance / % Transmission, measuring . . . . 40
4.5.7 Zero adjustment . . . . . . . . . . . . . . . . . . . . . . . . . 41
4.5.8 Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.5.9 Analysis timer . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.5.10 Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
4.5.11 Measuring diluted samples . . . . . . . . . . . . . . . . 44
4.6 pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.6.1 General information . . . . . . . . . . . . . . . . . . . . . . 46
4.6.2 Measuring the pH value . . . . . . . . . . . . . . . . . . . 47
4.6.3 Measuring the ORP . . . . . . . . . . . . . . . . . . . . . . 47
4.6.4 Settings for pH and ORP measurements . . . . . 48
4.6.5 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
4.6.6 Carrying out the TEC and NIST/DIN calibration 52
4.7 Turbidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
4.7.1 General information . . . . . . . . . . . . . . . . . . . . . . 56
4.7.2 Aligning and marking a cell . . . . . . . . . . . . . . . . 56
4.7.3 Measuring the turbidity . . . . . . . . . . . . . . . . . . . 58
4.7.4 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
4.8 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
4.8.1 Storing measurement datasets . . . . . . . . . . . . . 63
4.8.2 Filtering measurement datasets . . . . . . . . . . . . 64
4.8.3 Displaying measurement datasets . . . . . . . . . . . 64
4.8.4 Output measurement datasets to the RS232
interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
4.8.5 Erasing stored measurement datasets . . . . . . . 65
4.9 Transmitting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
4.9.1 Establishing the connection to a PC . . . . . . . . . 66
4.9.2 Data transmission with the PC software
LS Data . . . . . . . . . . . . . . . . . . . . . . . . . . 67
4.9.3 Data transmission with the Excel add-in
MultiLab®Importer . . . . . . . . . . . . . . . . . . . . . . . 67
4.9.4 Establishing the connection to a printer . . . . . . . 68
4.9.5 Configuration for the data transmission to a terminal
program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
4.9.6 Transmitting data to a printer or terminal
program . . . . . . . . . . . . . . . . . . . . . . . . . . 70
4.9.7 Examples of data transmitted (printer, terminal
program) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
4.10 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
4.10.1 Resetting the system settings . . . . . . . . . . . . . . 72
4.10.2 Resetting the photometry settings . . . . . . . . . . . 72
4.10.3 Resetting the settings for pH measurements . . . 73

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4.11 Meter information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
4.12 Software update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
4.13 Administrating user-defined methods . . . . . . . . . . . . . . . 74
4.13.1 Administrating user-defined programs with a
terminal program . . . . . . . . . . . . . . . . . . . . . . . . 75
5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 78
5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
5.1.1 Inserting/exchanging the batteries . . . . . . . . . . 78
5.1.2 Retrofitting the battery pack . . . . . . . . . . . . . . . 79
5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
5.2.1 Cleaning the cell shaft . . . . . . . . . . . . . . . . . . . . 80
5.2.2 Cleaning the cells . . . . . . . . . . . . . . . . . . . . . . . 81
5.3 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
5.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
6.1 General errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
6.2 Photometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
6.3 pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . 83
6.4 Turbidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
7.1 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
7.2 Photometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
7.3 pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . 88
7.4 Turbidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
8 Accessories and options . . . . . . . . . . . . . . . . . . . . . . . 89
8.1 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
8.1.1 Connecting cable . . . . . . . . . . . . . . . . . . . . . . . 89
8.2 Optional extensions of the pHotoFlex®Turb . . . . . . . . . 91
9 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
10 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
11 Firmware update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
12 Appendix:
Turbidity values under 1 FNU/NTU . . . . . . . . . . . . . . . 101

Overview pHotoFlex®Turb
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1Overview
1.1 General features
The compact pHotoFlex®Turb handheld precision meter enables you to car-
ry out the following measurements quickly and reliably:
Photometric measurements
– Concentration measurements (colorimetric measurements)
– Absorbance measurements
– Transmission measurements
pH measurements
Turbidity measurements.
The pHotoFlex®Turb handheld meter provides the maximum degree of ease
of use, reliability and measuring certainty for all applications.
The proven MultiCal® calibration procedure supports you in calibrating for pH
measurements, and the AutoRead function enables precise pH measure-
ments.
1 Keypad
2 Display
3 Cell shaft
4 Connectors
1
2
4
3

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1.2 Keypad
Key functions
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.
.
Select the measuring mode
<M> (long keystroke):
–Photometry
–Turbidity
–pH & ORP
Select the measured parameter within a measuring
mode
<M> (short keystroke):
–pH & ORP: pH, ORP
–Photometry:
Concentration, Absorbance, % Transmission
–Turbidity: no measured parameters selectable
Start calibration (measuring modes pH & ORP, Turbid-
ity)
Start zero adjustment or blank value measurement us-
ing the Photometry \ Adjustment menu
(measuring mode, Photometry) <CAL/ZERO>

Overview pHotoFlex®Turb
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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 param-
eter, Concentration
:
Switch over between available citation forms <FORM>
In the Photometry measuring mode, measured param-
eter, Concentration
:
Switch over between available units <UNIT>
Switch the meter on or off
<ON/OFF>
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 the values <V>, <W>
Switch to the next higher menu level / cancel input
<ESC>
Entering numerals with the number keys (see ENTERING NUMER-
ALS WITH THE NUMBER KEYS, page 22).
.
PRT

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1.3 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 dark.
Example
1.4 Socket field
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
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
12345

Overview pHotoFlex®Turb
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1.5 LabStation (optional)
The LabStation, which is available as an accessory, enables you to use the
pHotoFlex®Turb conveniently in the laboratory (see LabStation operating
manual).
Laboratory operation with the LabStation enables the following additional
functions:
With photometric measurements, the zero measurement is retained even
after switching the pHotoFlex®Turb off and on again
You can connect a barcode reader for the simplified calling up of programs
The LSdata software included serves to easily enter user-defined pro-
grams
Operation with power pack and battery pack (included in the scope of de-
livery of the LabStation). The accumulator pack in the pHotoFlex®Turb is
automatically charged as soon as the meter is placed in the LabStation.

pHotoFlex®Turb Safety
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2 Safety
2.1 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 fa-
miliar with the meter before putting it into operation or working with it. The op-
erating manual must be kept in the vicinity of the meter so you can always
find the information you need.
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:
NOTE
indicates a possibly dangerous situation where goods might be
damaged if the actions mentioned are not taken.
2.1.2 Safety signs on the meter
Note all labels, information signs and safety symbols on the meter and in the
battery compartment. A warning symbol (triangle) without text refers to safety
information in this operating manual.
2.1.3 Further documents providing safety information
The following documents provide additional information, which you should
observe for your safety when working with the measuring system:
• Operating manuals of further accessories
• Safety datasheets of the test reagents for working with photometric test
sets.
WARNING
indicates a possibly dangerous situation that can lead to seri-
ous (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.

Safety pHotoFlex®Turb
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2.2 Safe operation
2.2.1 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
chapter 7 TECHNICAL DATA).
Any other use is considered unauthorized.
2.2.2 Requirements for safe operation
Note the following points for safe operation:
• The meter may only be operated according to the authorized use specified
above.
• The meter may only be supplied with power by the energy sources
mentioned in this operating manual.
• The meter may only be operated under the environmental conditions
mentioned in this operating manual.
• The meter may only be opened if this is explicitly described in this oper-
ating manual (example: Inserting the batteries).
2.2.3 Unauthorized use
The meter must not be put into operation if:
• it is visibly damaged (e.g. after being transported)
• it was stored under adverse conditions for a lengthy period of time (storing
conditions, see chapter 7 TECHNICAL DATA).
CAUTION
Danger of eye damage by visible and invisible LED radiation.
In the cell shaft of the pHotoFlex®Turb there are light emit-
ting diodes (LEDs) of the 1M class.
Do not look at the radiation using optical instruments.
With normal, authorized use there is no hazard.

pHotoFlex®Turb Commissioning
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3 Commissioning
3.1 Scope of delivery
Handheld meter, pHotoFlex®Turb
4 batteries 1.5 V type AA (in the battery compartment)
1 empty cell 16 mm
2 empty cells 28 mm
with label to mark the cell for turbidity measurements
AMCO®-Clear turbidity standard
Microfiber cloth to clean the meter
Compact operating manual
Overview of the keys / available programs
CD-ROM with
– Detailed operating manual
– Photometry analysis manual with analysis specifications
– Software to program user-defined methods
Optional: LabStation with LSdata PC software, battery pack and universal
power pack
Optional: Battery pack (rechargeable)
3.2 Power supply
3.2.1 General information
You can operate the meter either with batteries, battery pack or a power
pack. The power pack supplies the meter with low voltage (9 V DC). At the
same time, the battery pack is charged. The battery pack is charged even
while the meter is switched off.
The LoBat display indicator appears when the batteries or battery pack are
nearly discharged.
Charging time of
the battery pack
approx. 36 hours.
The optional parts of the scope of delivery are available as acces-
sories (see section 8.1).

Commissioning pHotoFlex®Turb
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Automatic switch-
off function
The meter has an automatic switch-off function in order to save the batteries
or battery pack (see section 4.4).
Display illumina-
tion
During operation with the batteries or battery pack the meter automatically
switches off the display illumination if no key is pressed for 30 seconds. The
illumination is switched on with the next keystroke again. The display illumi-
nation can also be switched off completely (see section 4.4.2).
Connecting the
power pack
(optional)
CAUTION
Use original power packs only.
The line voltage at the operating site must lie within the input
voltage range of the original power pack (see chapter
7T
ECHNICAL DATA).
The battery pack should not be completely discharged. If you do
not operate the instrument for a longer period of time you should
charge the battery pack every six months.
The power pack and battery pack are available as accessories
(see section 8.1).
1 If necessary, replace the Euro plug (1) of the power pack (2) by the
country-specific plug suitable for your country.
2 Connect the plug (3) to the socket (4) of the measuring instrument.
3 Connect the power pack unit to an easily accessible mains socket.
3
4
2
1

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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.
1 Open the battery compartment:
– Unscrew the two screws (1) on the underside of the meter,
– Remove the lid of the battery compartment (2).
2 If necessary, take four old batteries out of the battery compartment.
3 Insert four batteries (3) in the battery compartment.
4 Close the battery compartment and fix it with the screws.
1
2

Commissioning pHotoFlex®Turb
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3.3 Initial commissioning
Perform the following activities:
For
– Battery operation: Insert the batteries (see section 3.2.2)
– Battery pack operation: Insert the battery pack (see section 5.1.2)
– Line power operation and charging the battery pack: Connect the
power pack (see section 3.2)
– Operation with LabStation and battery pack: Insert the battery pack,
connect the LabStation and insert the meter in the LabStation (see
LabStation operating manual)
Switch on the meter (see section 4.1)
Set the language as necessary (see section 4.3.3)
Set the date and time as necessary (see section 4.3.4)
When you set the language, date and time according to the men-
tioned sections of this operating manual you will quickly become
familiar with the simple operation of the pHotoFlex®Turb.

pHotoFlex®Turb Operation
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4 Operation
4.1 Switching on the meter
Switching on Press the <ON/OFF> key.
For 30 seconds, the 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.
After a few seconds, the meter automatically switches to the measuring mode
and measured parameter used last.
The measured value display appears (here, e.g. measuring mode Photome-
try).
Press <M> (long pressure) to switch to the measuring mode.
Press <M> (short pressure) to switch between different measuring parame-
ters in the selected measuring mode.
Switching off Press the <ON/OFF> key.
Automatic switch-
off function
The meter has an automatic switch-off function in order to save the batteries
or battery pack (see section 4.4). The automatic switchoff switches off the
meter if no key is pressed for an adjustable period.
The automatic switch-off function is not active
if the power is supplied by the power pack (optional),
if the power is supplied by the LabStation (optional),
if the Timer or Analysis timer function is on.
Photometry
Turbidity
pH & ORP
i pHotoFlex V 0.24
Start
Photometry \ Concentration
iSelect program
with <PROG>
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Operation pHotoFlex®Turb
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Display illumina-
tion with battery-
powered operation
During operation with batteries or battery pack the meter automatically
switches off the display illumination if no key is pressed for 30 seconds. The
illumination is switched on with the next keystroke again.
4.2 Inserting a cell
In order to be able to insert cells into the pHotoFlex®Turb, the cell shaft must
be prepared for holding a cell.
Inserting a 28 mm
cell
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 19)
1
2 Insert the cell so that it is positioned on the bottom of the cell
shaft.
The cell is ready to be measured.
3 For turbidity measurement:
Align the cell (see section 4.7.2).

pHotoFlex®Turb Operation
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Inserting a 16 mm
cell 1 Put the fold-out cell shaft (2) in an upright position until it locks into
place.
2 Pull upwards the height adapter (3).
The cell shaft is extended.
3 Open the external light cover (4) of the cell shaft.
2
3
4

Operation pHotoFlex®Turb
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4.3 General operating principles
This section contains basic information on the operation of the
pHotoFlex®Turb.
Operating ele-
ments,
display
An overview of the operating elements and the display is given in section 1.2
and section 1.3.
Operating modes,
navigation
An overview of the operating modes of the pHotoFlex®Turb and the naviga-
tion through menus and functions can be found in section 4.3.1 and
section 4.3.2.
4.3.1 Operating modes
The instrument has the following 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 seri-
al interface
Configuration
The display indicates a menu with further menus, settings and functions
4 Insert the 16 mm cell (marking points to the front) so that it is posi-
tioned on the bottom of the cell shaft.
5 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. Otherwise, the external light can
falsify the measurement result.