OPERATING MANUAL
HandyLab 100
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HandyLab 100
PH METER
HandyLab 100
Copyright © 2014, SI Analytics GmbH
Reprinting - even as excerpts - is only allowed with the explicit written
authorization of SI Analytics GmbH, Mainz.
Printed in Germany.
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HandyLab 100 Contents
HandyLab 100 - Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 10
3 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2.1 Inserting the batteries. . . . . . . . . . . . . . . . . . . . . 13
3.2.2 Switching on the meter. . . . . . . . . . . . . . . . . . . . 14
3.2.3 Setting the date and time . . . . . . . . . . . . . . . . . . 14
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Switching on the meter . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 General operating principles . . . . . . . . . . . . . . . . . . . . . . 16
4.2.1 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.2 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2.3 Navigation example 1:Setting the language. . . . 19
4.2.4 Example 2 on navigation: Setting the date and
time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.3 Sensor-independent settings . . . . . . . . . . . . . . . . . . . . . 23
4.3.1 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.3.2 Data storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3.3 Automatic Stability control . . . . . . . . . . . . . . . . . 24
4.4 pH value / ORP voltage. . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.4.1 General information . . . . . . . . . . . . . . . . . . . . . . 24
4.4.2 Measuring the pH value . . . . . . . . . . . . . . . . . . . 26
4.4.3 Measuring the ORP . . . . . . . . . . . . . . . . . . . . . . 28
4.4.4 Settings for pH and ORP measurements. . . . . . 30
4.4.5 pH calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.4.6 Calibration interval . . . . . . . . . . . . . . . . . . . . . . . 36
4.4.7 Carrying out automatic calibration (AutoCal) . . . 37
4.4.8 Carrying out a manual calibration (VariCal) . . . . 41
4.4.9 Displaying calibration records . . . . . . . . . . . . . . 44
4.4.10 Continuous measurement control (CMC
function) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
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Contents HandyLab 100
4.5 Data memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.5.1 Manual storage . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.5.2 Editing the measurement data memory . . . . . . . 47
4.5.3 Erasing the measurement data memory. . . . . . . 48
4.6 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
4.6.1 Resetting the measurement settings . . . . . . . . . 49
4.6.2 Resetting the system settings. . . . . . . . . . . . . . . 50
5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 51
5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.1.1 Replacing the batteries . . . . . . . . . . . . . . . . . . . . 51
5.2 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
5.3 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
5.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7.1 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7.2 Measuring ranges, resolution, accuracy . . . . . . . . . . . . . 60
8 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
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HandyLab 100 Overview
1
2
3
HandyLab 100
1Overview
The compact HandyLab 100 precision pH meter enables you to perform pH measurements rapidly and reliably. The HandyLab 100 provides the maximum degree of operating comfort, reliability and
measuring certainty for all applications.
The proven calibration procedures and automatic stability control function (AR) support your work with the pH meter.
1 Keypad
2Display
3 Connectors
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Overview HandyLab 100
F1
CAL
STO
RCL
ENTER
AR
1.1 Keypad
In this operating manual, keys are indicated by brackets <..> .
The key symbol (e.g. <ENTER>) generally indicates a short keystroke
(under 2 sec) in this operating manual. A long keystroke (approx.
2 sec) is indicated by the underscore behind the key symbol (e.g.
<ENTER
_>).
<F1>:
_>:
<F1
<ON/OFF>: Switches the meter on or off
<M>: Selects the measured parameter
<CAL>:
_>:
<CAL
<STO>: Saves a measured value manually
<RCL>: Displays the manually stored measured values
<>: Increments values, scrolls
<>: Decrements values, scrolls
Softkey providing situation dependent functions, e.g.:
<F1>/[Menu]: Opens the menu for measurement settings
_>/[Menu]: Opens the menu for system settings
<F1
Calls up the calibration procedure
Displays the calibration data
<ENTER>:
<ENTER
<AR> Freezes the measured value (HOLD function)
6
_>:
Opens the menu for measurement settings / confirms
entries
Opens the menu for system settings
Switches the AutoRead measurement on or off
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HandyLab 100 Overview
HOLD AR
25.0
6.093
pH
°C
4
3
2
5
6
7
8
1
0
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Menu
1.2 Display
1 Status information
2 Measured value (with unit)
3 Measured parameter
Function display
indicators
4 Continuous measurement control (CMC function)
5 Sensor symbol (calibration evaluation, calibration interval)
6 Measured temperature (with unit)
7 Status line
8 Softkeys and date + time
AutoCal
e.g. TEC
VariCal
Error An error occurred during calibration
LoBat Batteries are almost empty
AR Stability control (AutoRead) is active
HOLD Measured value is frozen (<AR> key)
Calibration with automatic buffer recognition, e.g.
with the buffer set: Technical buffers
Calibration with any buffers
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Overview HandyLab 100
4
1
2
3
1.3 Connectors
1 pH electrode
2 Reference electrode / temperature sensor
3 Reference electrode / temperature sensor
4 Service interface
Caution
Only connect sensors to the meter that cannot return any voltages
or currents that are not allowed (> SELV and > current circuit with
current limiting).
Almost all customary sensors fulfill these conditions.
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HandyLab 100 Safety
2 Safety
This operating manual contains basic instructions that you must follow
during the commissioning, operation and maintenance of the meter.
Consequently, all responsible personnel must read this operating manual before working with the meter.
The operating manual must always be available within the vicinity of the
meter.
Target group The meter was developed for work in the field and in the laboratory.
Thus, we assume that, as a result of their professional training and
experience, the operators will know the necessary safety precautions
to take when handling chemicals.
Safety instructions Safety instructions in this operating manual are indicated by the warn-
ing symbol (triangle) in the left column. The signal word (e.g. "Caution")
indicates the level of danger:
Further notes
Warning
indicates instructions that must be followed precisely in order to
avoid possibly great dangers to personnel.
Caution
indicates instructions that must be followed precisely in order to
avoid the possibility of slight injuries or damage to the instrument
or the environment.
Note
indicates notes that draw your attention to special features.
Note
indicates cross-references to other documents, e.g. operating manuals.
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Safety HandyLab 100
2.1 Authorized use
This meter is authorized exclusively for pH and ORP measurements in
a laboratory or field environment.
The technical specifications as given in chapter 7 T
ECHNICAL DATA must
be observed. Only the operation and running of the meter according to
the instructions given in this operating manual is authorized.
Any other use is considered unauthorized.
2.2 General safety instructions
This meter is constructed and tested in compliance with the IEC 1010
safety regulations for electronic measuring instruments.
It left the factory in a safe and secure technical condition.
Function and
operational safety
The smooth functioning and operational safety of the meter can only be
guaranteed if the generally applicable safety measures and the specific
safety instructions in this operating manual are followed during operation.
The smooth functioning and operational safety of the meter can only be
guaranteed under the environmental conditions that are specified in
chapter 7 T
ECHNICAL DATA.
If the meter was transported from a cold environment to a warm environment, the formation of condensate can lead to the faulty functioning
of the meter. In this event, wait until the temperature of the meter
reaches room temperature before putting the meter back into operation.
Caution
The meter is only allowed to be opened by authorized personnel.
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HandyLab 100 Safety
Safe operation If safe operation is no longer possible, the meter must be taken out of
service and secured against inadvertent operation!
Safe operation is no longer possible if the meter:
has been damaged in transport
has been stored under adverse conditions for a lengthy period of
time
is visibly damaged
no longer operates as described in this manual.
If you are in any doubt, please contact the supplier of the meter.
Obligations of the
purchaser
The purchaser of this meter must ensure that the following laws and
guidelines are observed when using dangerous substances:
EEC directives for protective labor legislation
National protective labor legislation
Safety regulations
Safety datasheets of the chemical manufacturers.
Caution
In addition to the safety instructions mentioned here, also follow
the safety instructions of the sensors used.
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Safety HandyLab 100
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HandyLab 100 Commissioning
2
1
3 Commissioning
3.1 Scope of delivery
pH meter HandyLab 100
4 batteries 1.5 V Mignon type AA
Short instructions
CD-ROM with
– detailed operating manual
3.2 Initial commissioning
Perform the following activities:
Insert the supplied batteries
For line-powered operation: Connect the power pack Switch on the
meter
Set the date and time
3.2.1 Inserting the batteries
1 Unscrew the four screws (1) on the underside of the meter.
2 Open the battery compartment (2) on the underside of the
meter.
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Commissioning HandyLab 100
3 Place four batteries (type Mignon AA) in the battery compart-
ment.
4 Close the battery compartment.
Caution
Make sure that the poles of the batteries are positioned correctly.
The ± signs on the batteries must correspond to the
battery compartment.
Note
Alternatively, you can also use Ni-MH rechargeable batteries (type
Mignon AA). In order to charge the batteries, an external charging
device is required.
3.2.2 Switching on the meter
± signs in the
1 Press the <ON/OFF> key.
The meter performs a self-test.
The display shows the manufacturer's logo while the self-test
is being performed.
Subsequently, the meter switches to the measuring mode
(measured value display).
Note
The meter has an energy saving feature to avoid unnecessary battery
depletion.
The energy saving feature switches off the meter if no key is pressed
during the adjusted interval. (How to set the switch-off interval, see section 4.3.1).
3.2.3 Setting the date and time
1 See section 4.2.4
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HandyLab 100 Operation
pH
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25.0
°C
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Menu
4 Operation
4.1 Switching on the meter
Switching on Press the <ON/OFF> key.
The meter performs a self-test.
The display shows the manufacturer's logo while the self-test is being
performed.
The measured value display appears.
Switching off Press the <ON/OFF> key.
Automatic switch-off
function
Display illumination The meter automatically switches off the display illumination if no key
The instrument has an automatic switch-off function in order to save the
batteries (see section 4.3.1). The automatic switch-off function switches off the meter if no key is pressed for an adjustable period.
is pressed for 30 seconds. The illumination is switched on with the next
keystroke again.
You can also generally switch the display illumination on or off (see
section 4.3.1).
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Operation HandyLab 100
4.2 General operating principles
This section contains basic information on the operation of the
HandyLab 100.
Operating elements,
display
Operating modes,
navigation
An overview of the operating elements and the display is given in section 1.1 and section 1.2.
An overview of the operating modes and navigation of the
HandyLab 100 is given in section 4.2.1 and section 4.2.2.
4.2.1 Operating modes
The instrument has the following operating modes:
Measuring
The measurement data of the connected sensor are shown in the
measured value display
Calibration
The course of a calibration with calibration information, functions
and settings is displayed
Storing in memory
The meter stores the measurement data manually
Setting
The system menu or a sensor menu with submenus, settings and
functions is displayed
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HandyLab 100 Operation
General
Clock
Service information
Reset
System
15.03.2014
010:00
Back
Language: Deutsch
Illumination: On
Contrast
: 50 %
Switchoff time: 1 h
General
15.03.2014
010:00
Back
4.2.2 Navigation
Measured value display In the measured value display, you can
open the menu for calibration and measurement settings with <F1>
(short
keystroke)
open the system menu with the sensor-independent settings by
pressing <F1>Storage & config for a <F1
_>long keystroke,
approx. 2 s).
change the display in the selected measuring screen (e. g. pH <->
mV) by pressing <M>.
Menus and dialogs The menus for settings and dialogs in procedures contain further sub-
elements. The selection is made with the <><> keys. The current
selection is displayed with a frame.
Submenus
The name of the submenu is displayed at the upper edge of the
frame. Submenus are opened by confirming with <ENTER>. Example:
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Settings
Settings are indicated by a colon. The current setting is displayed on
the right-hand side. The setting mode is opened with <ENTER>.
Subsequently, the setting can be changed with <><> and
<ENTER>. Example:
17
Operation HandyLab 100
Calibration record
Kalibrierspeicher
Buffer
: TEC
One point calibration
: Yes
Calibration interval: 7 d
Unit for slope
: mV/pH
i
2.00 4.01 7.00 10.01 (25 °C)
pH
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Back
Calibration record
Kalibrierspeicher
Buffer
: TEC
One point calibration
: Yes
Calibration interval
: 7 d
Unit for slope: mV/pH
i
2.00 4.01 7.00 10.01 (25 °C)
pH
15.03.2014
010:00
Back
Functions
Functions are designated by the name of the function. They are
immediately carried out by confirming with <ENTER>.
Example: Display the Calibration record function.
i
Messages Information is marked by the
symbol. It cannot be selected. Example:
18
Note
The principles of navigation are explained in the two following sections
by reference of examples:
Setting the language (section 4.2.3)
Setting the date and time (see section 4.2.4).
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HandyLab 100 Operation
pH
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25.0
°C
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Menu
System
Data storage
Storage & config
15.03.2014
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Back
4.2.3 Navigation example 1:Setting the language
1 Press the <ON/OFF> key.
The measured value display appears.
The instrument is in the measuring mode.
2 Using <F1_>/[Menu], open the Storage & config menu.
The instrument is in the setting mode.
3 Select the System submenu with <><>.
The current selection is displayed with a frame.
4 Open the System submenu with <ENTER>.
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Operation HandyLab 100
General
Clock
Service information
Reset
System
15.03.2014
010:00
Back
Language: Deutsch
Illumination: On
Contrast
: 50 %
Switchoff time
: 1 h
General
15.03.2014
010:00
Back
Language: Deutsch
Illumination
: On
Contrast: 50 %
Switchoff time
: 1 h
General
15.03.2014
010:00
Back
5 Select the General submenu with <><>.
The current selection is displayed with a frame.
6 Open the General
submenu with <ENTER>.
7 Open the setting mode for the Language with <ENTER>.
20
8 Select the required language with <><>.
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HandyLab 100 Operation
9 Confirm the setting with <ENTER>.
The meter switches to the measuring mode.
The selected language is active.
4.2.4 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 values and calibrating, the current date and
time are automatically stored as well.
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
Setting the date, time
and date format
Identification of stored measured values.
Therefore, check the time at regular intervals.
Note
After a fall of the supply voltage (empty batteries), the date and time are
reset to 01.01.2008, 00:00 hours.
The date format can be switched from the display of day, month, year
(dd.mm.yyyy) to the display of month, day, year (mm/dd/yyyy or
mm.dd.yyyy).
1 In the measured value display:
Using <F1
The instrument is in the setting mode.
2 Select and confirm the System / Clock menu with <><>
and <ENTER>.
The setting menu for the date and time opens up.
3 Select and confirm the Time menu with <><> and
<ENTER>.
The hours are highlighted.
_>/[Menu], open the Storage & config menu.
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Operation HandyLab 100
Date format: dd.mm.yyyy
Date
: 30.10.2008
Time: 14:53:40
Clock
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Back
4 Change and confirm the setting with <><> and <ENTER>.
The minutes are highlighted.
5 Change and confirm the setting with <><> and <ENTER>.
The seconds are highlighted.
6 Change and confirm the setting with <><> and <ENTER>.
The time is set.
7 If necessary, set the Date and Date format. The setting is made
similarly to that of the time.
8 If necessary, select and set the Date with <><> and
<ENTER>.
9 To make further settings, switch to the next higher menu level
with [Back]<F1>.
or
Switch to the measured value display with <M>.
The instrument is in the measuring mode.
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HandyLab 100 Operation
4.3 Sensor-independent settings
The Storage & config menu comprises the following settings:
System (see section 4.3.1).
Data storage (see section 4.3.2)
4.3.1 System
Overview The following sensor-independent meter characteristics can be
adjusted in the Storage & config/System menu:
Menu language
Illumination
Display contrast
Interval of the automatic switch-off function
Clock and date function
Reset of all sensor-independent system settings to the default con-
dition
Settings To open the Storage & config menu, press the <F1
the measured value display. After completing the settings, switch to the
measured value display with <M>.
Menu item Setting
Explanation
System / General /
Language
System / General / Illumination
System / General /
Contrast
System / General /
Switchoff time
Deutsch
English
(more)
Auto
On
Off
0 ... 100 % Changes the display con-
10 min ... 24 h Adjusts the switch-off time
Selects the menu language
Switches the display illumination on/off
trast
_>[Menu] key in
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System / Clock Time
Date
Date format
System / Service information
Settings of time and date.
For details, see section
4.2.4
Hardware version and software version of the meter
are displayed.
23
Operation HandyLab 100
Menu item Setting
Explanation
System / Reset - Resets the system settings
to the default values.
For details, see section
4.6.2
4.3.2 Data storage
This menu contains all functions to display, edit and erase stored measured values.
Note
Detailed information on the memory functions of the HandyLab 100 is
given in section 4.5.
4.3.3 Automatic Stability control
The automatic Stability control (AutoRead) function continuously
checks the stability of the measurement signal. The stability has a considerable impact on the reproducibility of measured values.
You can activate or switch off the automatic Stability control function
(see section 4.4.4).
The measured parameter flashes on the display
as soon as the measured value is outside the stability range
when you switch over between the measured parameters with <M>.
when the automatic Stability control is switched off.
4.4 pH value / ORP voltage
4.4.1 General information
You can measure the following parameters:
pH value [ ]
24
Temperature
measurement
ORP [mV]
For reproducible pH measurements, it is essential to measure the temperature of the test sample.
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HandyLab 100 Operation
You have the following options to measure the temperature:
Automatic measurement of the temperature by the temperature sen-
sor (NTC30 or Pt1000) integrated in electrode.
Measurement by an external temperature sensor.
Manual determination and input of the temperature.
The measuring instrument recognizes whether a suitable sensor is
connected and automatically switches on the temperature measurement.
The display of the temperature indicates the active temperature measuring mode:
Temperature
sensor
Resolution of the
temp. display
Mode
yes 0.1 °C Automatic with temperature
sensor
- 1 °C Manual
Preparatory activities Perform the following preparatory activities when you want to measure:
1 Connect a pH or ORP electrode to the meter.
The pH measuring window is displayed.
2 If necessary, select the pH or mV display with <M>.
3 Adjust the temperature of the solutions and measure the cur-
rent temperature if the measurement is made without a temperature sensor.
4 Calibrate or check the meter with the electrode.
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Operation HandyLab 100
pH
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°C
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Menu
4.4.2 Measuring the pH value
1 Perform the preparatory activities according to section 4.4.1.
2 Immerse the pH electrode in the test sample.
Stability control
(AutoRead )
3 Select the pH or mV display with <M>.
The stability control function (AutoRead) continually checks the stability
of the measurement signal. The stability has a considerable impact on
the reproducibility of measured values.
The measured parameter flashes on the display
as soon as the measured value is outside the stability range
when the automatic Stability control is switched off.
You can start the Stability control manually at any time, irrespective of
the setting for automatic Stability control (see page 24) in the Measure-
ment menu.
1 Freeze the measured value with <AR>.
The [HOLD] status indicator is displayed.
The HOLD function is active.
2 Using <ENTER>, activate the Stability control function manu-
ally.
The [AR] status indicator appears while the measured value is
assessed as not stable. A progress bar is displayed and the
display of the measured parameter flashes.
The [HOLD][AR] status indicator appears as soon as a stable
measured value is recognized.
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HandyLab 100 Operation
Note
You can prematurely terminate the Stability control function manually
with <ENTER> at any time. If the Stability control function is prematurely terminated, the current measurement data are output to the
interface without the AutoRead info.
3 Using <ENTER>, start a further measurement with stability
control.
or
Release the frozen measured value again with <AR> or <M>.
The [AR] status display disappears. The display switches back
to the previous indication.
Criteria for a stable
measured value
The Stability control function checks whether the measured values are
stable within the monitored time interval.
Measured
parameter
pH value 15 seconds
Temperature 15 seconds
Time interval Stability during the time
interval
Δ : better than 0.01 pH
∆ : better than 0.5 °C
The minimum duration until a measured value is assessed as stable is
the monitored time interval. The actual duration is mostly longer.
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Operation HandyLab 100
U
157.0 mV
24.8 °C
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Menu
4.4.3 Measuring the ORP
Note
ORP electrodes are not calibrated. However, you can check ORP electrodes using a test solution.
1 Perform the preparatory activities according to section 4.4.1.
2 Submerse the ORP electrode in the sample.
Stability control
(AutoRead )
3 Select the mV display with <M>.
The stability control function (AutoRead) continually checks the stability
of the measurement signal. The stability has a considerable impact on
the reproducibility of measured values.
The measured parameter flashes on the display
as soon as the measured value is outside the stability range
when the automatic Stability control is switched off.
You can start the Stability control manually at any time, irrespective of
the setting for automatic Stability control (see page 24) in the Measure-
ment menu.
1 Freeze the measured value with <AR>.
The [HOLD] status indicator is displayed.
The HOLD function is active.
2 Using <ENTER>, activate the Stability control function manu-
ally.
The [AR] status indicator appears while the measured value is
assessed as not stable. A progress bar is displayed and the
display of the measured parameter flashes.
The [HOLD][AR] status indicator appears as soon as a stable
measured value is recognized.
28
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HandyLab 100 Operation
Note
You can prematurely terminate the Stability control function manually
with <ENTER> at any time. If the Stability control function is prematurely terminated, the current measurement data are output to the
interface without the AutoRead info.
3 Using <ENTER>, start a further measurement with stability
control.
or
Release the frozen measured value again with <AR> or <M>.
The [AR] status display disappears. The display switches back
to the previous indication.
Criteria for a stable
measured value
The Stability control function checks whether the measured values are
stable within the monitored time interval.
Measured
parameter
ORP 15 seconds
Temperature 15 seconds
Time interval Stability during the time
interval
Δ : better than 0.3 mV
∆ : better than 0.5 °C
The minimum duration until a measured value is assessed as stable is
the monitored time interval. The actual duration is mostly longer.
ba77062d01 03/2014
29
Operation HandyLab 100
4.4.4 Settings for pH and ORP measurements
Overview The following settings are possible for pH and ORP measurements:
Resolution
Calibration interval
Buffers for calibration
Unit of the temperature
Automatic stability control
Unit for slope
Calibration record (display)
Settings The settings are made in the menu for calibration and measurement
settings of the pH/ORP measurement. To open the settings, display the
required parameter in the measured value display and press the <F1>/
[menu] or <ENTER> key. After completing the settings, switch to the
measured value display with <M>.
Menu item Possible
setting
Calibration / Calibra-
- Displays the calibration
tion record
Calibration / Buffer TEC
NIST/DIN
VariCal
...
Calibration / One
point calibration
Calibration / Calibra-
Yes
No
1 ... 999 d Calibration interval for the
tion interval
Calibration / Unit for
slope
mV/pH
%
Explanation
record of the last calibration.
Buffer sets to be used for pH
calibration.
More buffers and details,
see section 4.4.5.
Quick calibration with 1 buffer
pH electrode (in days).
The meter reminds you to
calibrate regularly by the
flashing sensor symbol in
the measuring screen.
Unit of the slope.
The % display refers to the
Nernst slope of
-59.2 mV/pH (100 x determined slope/Nernst slope).
30
Man. temperature -25 ... +130 °C Entry of the manually deter-
mined temperature. For
measurements without temperature sensor only.
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HandyLab 100 Operation
Menu item Possible
Explanation
setting
Temperature unit °C
°F
Temperature unit,
degrees Celsius or degrees
Fahrenheit.
All temperature values are
displayed with the selected
unit.
Resolution pH 0.001
0.01
Resolution of the pH display:
0.1
Resolution mV 0.1
1
Resolution of the mV display:
Stability control On / Off Switches on or off the auto-
matic stability control during
measurement (see section
4.3.3)
Reset - Resets all sensor settings to
the delivery condition (see
section 4.6.1).
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31
Operation HandyLab 100
4.4.5 pH calibration
Why calibrate? pH electrodes age. This changes the zero point (asymmetry) and slope
of the pH electrode. As a result, an inexact measured value is displayed. Calibration determines and stores the current values of the
zero point and slope of the electrode.
Thus, you should calibrate at regular intervals.
When do you have to
calibrate?
Buffer sets for
calibration
After connecting another combination electrode
When the calibration interval has expired
You can use the buffer sets quoted in the table for an automatic calibration. The pH values are valid for the specified temperature values. The
temperature dependence of the pH values is taken into consideration
during calibration.
No. Buffer set * pH values at
1 VariCal
2
NIST/DIN
DIN buffers according to DIN
19266 and NIST Traceable
Buffers
Any Any
1.679
25 °C
4.006
6.865
9.180
12.454
3
TEC
Technical buffers
2.000
4.010
25 °C
7.000
10.011
4
Merck 1* 4.000
20 °C
7.000
9.000
32
5
Merck 2 * 1.000
20 °C
6.000
8.000
13.000
6
Merck 3 * 4.660
20 °C
6.880
9.220
7
Merck 4 * 2.000
20 °C
4.000
7.000
10.000
8
Merck 5 * 4.010
25 °C
7.000
10.000
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HandyLab 100 Operation
No. Buffer set * pH values at
9
10
11
12
13
14
DIN 19267 1.090
4.650
6.790
9.230
Mettler Toledo USA * 1.679
4.003
7.002
10.013
Mettler Toledo EU * 1.995
4.005
7.002
9.208
Fisher * 2.007
4.002
7.004
10.002
Fluka BS * 4.006
6.984
8.957
Radiometer * 1.678
4.005
7.000
9.180
25 °C
25 °C
25 °C
25 °C
25 °C
25 °C
15
16
17
18
19
Baker * 4.006
6.991
10.008
Metrohm * 3.996
7.003
8.999
Beckman * 4.005
7.005
10.013
Hamilton Duracal * 4.005
7.002
10.013
Precisa * 3.996
7.003
8.999
25 °C
25 °C
25 °C
25 °C
25 °C
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Operation HandyLab 100
No. Buffer set * pH values at
20
Reagecon TEC * 2.000
4.010
7.000
10.000
21
Reagecon 20 * 2.000
4.000
7.000
10.000
13.000
22
Reagecon 25 * 2.000
4.000
7.000
10.000
13.000
23 Chemsolute * 4.000
7.000
10.000
24
USABlueBook
*4.000
7.000
10.000
25 °C
20 °C
25 °C
20 °C
20 °C
25 YSI * 4.000
25 °C
7.000
10.000
* Brand names or trade names are trademarks of their respective owners
protected by law.
Note
The buffers are selected in the menu, pH / <F1>/[Menu] / Calibration /
Buffer (see page 30).
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HandyLab 100 Operation
Calibration points Calibration can be performed using one to five buffer solutions in any
order (single-point to five-point calibration). The meter determines the
following values and calculates the calibration line as follows:
Determined val-
Displayed calibration data
ues
1-point Asy Zero point = Asy
Slope = Nernst slope
(-59.2 mV/pH at 25 °C)
2-point Asy
Slp.
3-point to
5-point
Asy
Slp.
Zero point = Asy
Slope = Slp.
Zero point = Asy
Slope = Slp.
The calibration line is calculated
by linear regression.
Note
You can display the slope in the units, mV/pH or % (see page 30).
Stability control The calibration procedure automatically activates the stability control
function. The current measurement with stability control can be terminated at any time (accepting the current value).
Calibration record The new calibration values are displayed when the calibration is fin-
ished.
Display calibration data You can have the data of the last calibration displayed (see page 44).
Calibration evaluation After calibrating, the meter automatically evaluates the calibration.The
zero point and slope are evaluated separately. The worse evaluation of
both is taken into account. The evaluation appears on the display and
in the calibration record.
Display Calibration
record
Zero point
[mV]
Slope [mV/
pH]
+++ -15 ... +15 -60,5 ... -58
++ -20 ... +20 -58 ... -57
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35
Operation HandyLab 100
Display Calibration
record
Zero point
[mV]
Slope [mV/
pH]
+ -25 ... +25 -61 ... -60.5
or
-57 ... -56
- -30 ... +30 -62 ... -61
or
-56 ... -50
Clean the electrode according to the
electrode operating manual
Error Error
< -30 or
> 30
... -62 or
... -50
Eliminate the error according to chapter
6 W
HAT TO DO IF... (page 55)
Preparatory activities Perform the following preparatory activities when you want to calibrate:
1 Connect the pH electrode to the meter.
The pH measuring window is displayed.
Setting the calibration
interval
2 Keep the buffer solutions ready. Adjust the temperature of the
buffer solutions, or measure the current temperature, if you
measure without a temperature sensor.
4.4.6 Calibration interval
The calibration evaluation is displayed as a sensor symbol.
The sensor symbol flashes after the adjusted calibration interval has
expired. It is still possible to measure.
Note
To ensure the high measuring accuracy of the measuring system, calibrate after the calibration interval has expired.
The calibration interval is set to 7 days (d7) in the factory.
You can change the interval (1 ... 999 days):
1 Open the menu for measurement settings with [Menu]<F1>.
36
2In the Calibration / Calibration interval menu, set the calibration
interval with <><>.
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HandyLab 100 Operation
pH 1
-180.0
24.8 °C
AutoCal TEC
15.03.2014
010:00
Buffer
mV
3 Confirm the setting with <ENTER>.
4 Quit the menu with <M>.
4.4.7 Carrying out automatic calibration (AutoCal)
Make sure that in the sensor menu, Buffer menu, the buffer set is correctly selected (see page 30).
Use any one to five buffer solutions of the selected buffer set in ascending or descending order.
Below, calibration with Technical buffers (TEC) is described. When
other buffer sets are used, other nominal buffer values are displayed.
Apart from that, the procedure is identical.
Note
If single-point calibration was set in the menu, the calibration procedure
is automatically finished with the measurement of buffer solution 1 and
the calibration record is displayed.
1 In the measured value display, select the measured parameter
pH or mV with <M>.
2 Start the calibration with <CAL>.
The calibration display for the first buffer appears (voltage display).
3 Thoroughly rinse the electrode with deionized water.
4 Immerse the electrode in buffer solution 1.
5 When measuring without temperature sensor:
Measure the temperature of the buffer manually and enter it
with <><>.
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Operation HandyLab 100
pH
-180.0
24.8 °C
AutoCal TEC
10.011
15.03.2014
010:00
AR
Buffer
mV
6 Start the measurement with <ENTER>.
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter flashes.
7 Wait for the end of the measurement with stability control or
accept the calibration value with <ENTER>.
The calibration display for the next buffer appears (voltage display).
Continuing with two-
point calibration
8 If necessary, finish the calibration procedure as a single-point
calibration with <M>.
The calibration record is displayed.
Note
For single-point calibration, the instrument uses the Nernst slope
(-59.2 mV/pH at 25 °C) and determines the zero point of the electrode.
9 Thoroughly rinse the electrode with deionized water.
10 Immerse the electrode in buffer solution 2.
11 When measuring without temperature sensor:
Measure the temperature of the buffer manually and enter it
with <><>.
12 Start the measurement with <ENTER>.
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter flashes.
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HandyLab 100 Operation
pH
0.0
24.8 °C
AutoCal TEC
7.000
15.03.2014
010:00
AR
Buffer
mV
pH
180.0
24.8 °C
AutoCal TEC
4.010
15.03.2014
010:00
AR
Buffer
mV
13 Wait for the measurement with stability control to be completed
or terminate the stability control and take over the calibration
value with <ENTER>.
The calibration display for the next buffer appears (voltage display).
Continuing with three-
to five-point calibration
14 If necessary, finish the calibration procedure as a two-point cal-
ibration with <M>.
The calibration record is displayed.
15 Thoroughly rinse the electrode with deionized water.
16 Immerse the electrode in the next buffer solution.
17 When measuring without temperature sensor:
Measure the temperature of the buffer manually and enter it
with <><>.
18 Start the measurement with <ENTER>.
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter flashes.
ba77062d01 03/2014
39
Operation HandyLab 100
19 Wait for the measurement with stability control to be completed
or terminate the stability control and take over the calibration
value with <ENTER>.
The calibration display for the next buffer appears (voltage display).
20 If necessary, use <M> to finish calibration or
switch to calibration with the next buffer with <ENTER>.
Note
Calibration is automatically completed after the last buffer of a buffer
set has been measured. Then the calibration record is displayed.
The calibration line is determined by linear regression.
40
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HandyLab 100 Operation
pH
0.0
24.8 °C
VariCal
1
15.03.2014
010:00
Buffer
mV
4.4.8 Carrying out a manual calibration (VariCal)
Make sure that in the sensor menu, Buffer menu, the VariCal buffer set
is correctly selected (see page 30).
Use any one to five buffer solutions in ascending or descending order.
Note
If single-point calibration was set in the menu, the calibration procedure
is automatically finished with the measurement of buffer solution 1 and
the calibration record is displayed.
1 In the measured value display, select the measured parameter
pH or mV with <M>.
2 Start the calibration with <CAL>.
The calibration display appears.
ba77062d01 03/2014
3 Thoroughly rinse the electrode with deionized water.
4 Immerse the electrode in buffer solution 1.
5 When measuring without temperature sensor:
Measure the temperature of the buffer manually and enter it
with <><>.
6 Start the measurement with <ENTER>.
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter flashes.
41
Operation HandyLab 100
pH
0.0
24.8 °C
VariCal
7.000
15.03.2014
010:00
Buffer
mV
AR
pH
7.000
24.8 °C
VariCal
1
15.03.2014
010:00
Buffer
7 Wait for the end of the measurement with stability control or
accept the calibration value with <ENTER>.
The calibration display for the next buffer appears.
8 Set the nominal buffer value for the measured temperature with
<><>.
9 Accept the calibration value with <ENTER>.
The calibration display for the next buffer appears (voltage display).
10 If necessary, finish the calibration procedure as a single-point
calibration with <M>.
The calibration record is displayed.
Note
For single-point calibration, the instrument uses the Nernst slope
(-59.2 mV/pH at 25 °C) and determines the zero point of the electrode.
42
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HandyLab 100 Operation
pH
4.035
24.8 °C
VariCal
2
15.03.2014
010:00
Buffer
Continuing with two-
point calibration
11 Thoroughly rinse the electrode with deionized water.
12 Immerse the electrode in buffer solution 2.
13 When measuring without temperature sensor:
Measure the temperature of the buffer manually and enter it
with <><>.
14 Start the measurement with <ENTER>.
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter flashes.
15 Wait for the measurement with stability control to be completed
or terminate the stability control and take over the calibration
value with <ENTER>.
The calibration display for the next buffer appears.
Continuing with three-
to five-point calibration
ba77062d01 03/2014
16 Set the nominal buffer value for the measured temperature with
<><>.
17 Accept the calibration value with <ENTER>.
The calibration display for the next buffer appears (voltage display).
18 Finish the calibration procedure as a two-point calibration with
<M>.
The calibration record is displayed.
19 Thoroughly rinse the electrode with deionized water.
20 Immerse the electrode in the next buffer solution.
21 When measuring without temperature sensor:
Measure the temperature of the buffer manually and enter it
with <><>.
43
Operation HandyLab 100
pH
9.958
24.8 °C
VariCal
3
15.03.2014
010:00
Buffer
22 Start the measurement with <ENTER>.
The measured value is checked for stability (stability control).
The [AR] status indicator is displayed. The measured parameter flashes.
23 Wait for the measurement with stability control to be completed
or terminate the stability control and take over the calibration
value with <ENTER>.
The calibration display for the next buffer appears.
Displaying the
calibration record
24 Set the nominal buffer value for the measured temperature with
<><>.
25 Accept the calibration value with <ENTER>.
The calibration display for the next buffer appears (voltage display).
26 Use <M> to finish calibration or
switch to calibration with the next buffer with <ENTER>.
Note
After the fifth buffer has been measured the calibration is automatically
finished. Then the calibration record is displayed.
The calibration line is determined by linear regression.
4.4.9 Displaying calibration records
The calibration record of the last calibration is to be found under the
menu item, Calibration / Calibration record. To open it in the measured
value display, press the <CAL
_> key.
44
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HandyLab 100 Operation
25.0
6.093
1
2
3
4
pH
°C
0
14
15.03.2014
010:00
Menu
4.4.10 Continuous measurement control (CMC function)
The Continuous Measurement Control (CMC function) facilitates to
evaluate the current measured value instantly and definitely.
After each successful calibration the scale of the pH measuring range
is displayed in the measured value display. Here you can very clearly
see whether or not the current measured value is in the calibrated part
of the measuring range.
The following information is displayed:
1 Measuring range for which a valid calibration is available (white).
Measured values in this range are suitable for documentation.
2 Measuring range for which no valid calibration is available
(shaded). Measured values in this range are not suitable for documentation. If necessary, calibrate the meter with buffers covering this measuring range.
If the current measured value is outside the calibrated range,
this area is shaded stronger.
If a measured value is outside the measuring range pH 0 - 14,
overflow arrows are displayed at the left or right edge of the measuring range.
3 Currently measured pH value (needle)
4 Marking lines for all nominal buffer values used with the last valid
calibration
The limits of the calibrated range are determined by the buffers used
for calibration:
Lower limit: Buffer with lowest pH value - 2 pH units
Upper limit: Buffer with highest pH value + 2 pH units
ba77062d01 03/2014
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Operation HandyLab 100
30.10.2008 11:24:16
pH 7.000 24.8 °C AR +++
ID number: 1
Continue
Manual data storage 4 From 500
15.03.2014
010:00
Back
4.5 Data memory
You can transmit measured values (datasets) to the data memory:
Manual storage (see section 4.5.1)
Measurement dataset A complete dataset consists of:
ID number
Date/time
Measured value of the connected sensor
Measured temperature value of the connected sensor or manually
set temperature
AutoRead info: AR appears with the measured value if the
AutoRead criterion was met while storing (stable measured value).
Otherwise, the AR display is missing.
Calibration evaluation: +++, ++, +, -, or no evaluation
Storage locations The HandyLab 100 meter has a measurement data memory.
Data memory Maximum number of datasets
Manual data storage 500
4.5.1 Manual storage
You can store a measurement dataset to the data memory as follows.
1 Press the <STO> key shortly.
The menu for manual data storage appears.
46
2 If necessary, change and confirm the ID number (1 ... 10000)
with <><> and <ENTER>.
The dataset is stored. The meter switches to the measured
value display.
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HandyLab 100 Operation
Data storage full. Erase?
Yes
No
Warning
15.03.2014
010:00
Back
If the memory is full The following window appears if all 500 storage locations are occupied:
You have the following options:
To erase the entire storage, confirm Yes.
Editing the data memory The memory is edited in the menu, Storage & config/ Data storage. To
Settings
To cancel the storage process and switch to the measured value
display, confirm No.
4.5.2 Editing the measurement data memory
The contents of the manual measurement data memory can be shown
on the display.
The measurement data memory has a function to erase the entire contents.
open the Storage & config menu, press the <F1
_>[Menu] key in the
measured value display.
Open the manual memory directly with the <RCL> key.
Menu item Setting/
Explanation
function
Data storage /
Manual data storage /
- Displays all measurement
datasets page by page.
Display
Further options:
Scroll through the datas-
ets with <><>.
Quit the display with <F1>/
[Back].
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47
Operation HandyLab 100
Manual data storage 3 of 64
30.10.2008 11:24:16 ID number: 1
pH 7.000 24.8 °C AR +++
15.03.2014
010:00
Back
Display presentation of
a dataset
Menu item Setting/
function
Data storage /
- Erases the entire manual
Manual data storage /
Erase
Explanation
measurement data memory.
Note:
All calibration data remain
stored when this action is
performed.
Quitting the display To quit the display of stored measurement datasets, you have the fol-
lowing options:
Switch directly to the measured value display with <M>.
Quit the display and move to the next higher menu level with <F1>/
[Back].
4.5.3 Erasing the measurement data memory
How to erase the measurement data memory is described in section
4.5.2 E
DITING THE MEASUREMENT DATA MEMORY.
48
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HandyLab 100 Operation
4.6 Reset
You can reset (initialize) all sensor settings and sensor-independent
settings separately from each other.
4.6.1 Resetting the measurement settings
Note
The calibration data are reset to the default settings together with the
measuring parameters. Recalibrate after performing a reset.
pH The following settings for pH measurements are reset to the default
settings with the Reset function:
Setting Default settings
Buffer TEC
Cal. interval 7 d
Unit for slope mV/pH
Measured parameter pH
Resolution pH 0.001
Resolution mV 0.1
Asymmetry 0 mV
Slope -59.2 mV
Man. temperature 25 °C
One point calibration Off
Stability control On
Temperature unit °C
The sensor settings are reset under the Reset menu item in the menu
for calibration and measurement settings. To open the settings, display
the required parameter in the measured value display and press the
<F1>/[menu] or <ENTER> key.
ba77062d01 03/2014
49
Operation HandyLab 100
4.6.2 Resetting the system settings
The following system settings can be reset to the default status:
Setting Default settings
Language English
Contrast 50 %
Illumination Auto
Switchoff time 1 h
The system settings are reset in the menu, Storage & config / System
/ Reset. To open the Storage & config menu, press the <F1
key in the measured value display.
_>[Menu]
50
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HandyLab 100 Maintenance, cleaning, disposal
5 Maintenance, cleaning, disposal
5.1 Maintenance
The only maintenance activity required is replacing the batteries.
Note
See the relevant operating manuals of the electrodes for instructions on
maintenance.
5.1.1 Replacing the batteries
1 Unscrew the four screws (1) on the underside of the meter.
2 Open the battery compartment (2) on the underside of the
meter.
ba77062d01 03/2014
51
Maintenance, cleaning, disposal HandyLab 100
2
1
1
2
3 Place four batteries (type Mignon AA) in the battery compart-
ment.
4 Close the battery compartment.
Note
Alternatively, you can also use Ni-MH rechargeable batteries (type
Mignon AA). In order to charge the batteries, an external charging
device is required.
Caution
Make sure that the poles of the batteries are positioned correctly.
The ± signs on the batteries must correspond to the
battery compartment.
52
± signs in the
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HandyLab 100 Maintenance, cleaning, disposal
5.2 Cleaning
Occasionally wipe the outside of the measuring instrument with a
damp, lint-free cloth. Disinfect the housing with isopropanol as
required.
Caution
The housing is made of synthetic material (ABS). Thus, avoid contact with acetone or similar detergents that contain solvents. Remove any splashes immediately.
5.3 Packing
This meter is sent out in a protective transport packing.
We recommend: Keep the packing material. The original packing protects the meter against damage during transport.
5.4 Disposal
Note
This meter contains batteries. Batteries that have been removed may
only be disposed of at a recycling facility set up for this purpose or via
the retail outlet.
It is illegal to dispose of it in household refuse.
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53
Maintenance, cleaning, disposal HandyLab 100
54
ba77062d01 03/2014
HandyLab 100 What to do if...
6 What to do if...
Error message
OFL, UFL
Error message,
Error
Cause Remedy
pH electrode:
– Measured value outside the
– Use suitable electrode
measuring range
– Air bubble in front of the junc-
– Remove air bubble
tion
– Air in the junction – Extract air or moisten junc-
tion
– Cable broken – Replace the electrode
– Gel electrolyte dried out – Replace the electrode
Cause Remedy
pH electrode:
– The values determined for
– Recalibrate
zero point and slope of the
electrode are outside the
allowed limits.
– Junction contaminated – Clean the junction
– Electrode broken – Replace the electrode
Buffer solutions:
– Incorrect buffer solutions – Change calibration proce-
dure
– Buffer solutions too old – Use only once.
Note the shelf life
– Buffer solutions depleted – Change solutions
ba77062d01 03/2014
55
What to do if... HandyLab 100
No stable measured
Cause Remedy
value
pH electrode:
– Junction contaminated – Clean the junction
– Membrane contaminated – Clean membrane
Test sample:
– pH value not stable – Measure with air excluded
if necessary
– Temperature not stable – Adjust temperature if nec-
essary
Sensor symbol flashes
Display
Electrode + test sample:
– Conductivity too low – Use suitable electrode
– Temperature too high – Use suitable electrode
– Organic liquids – Use suitable electrode
Cause Remedy
– Calibration interval expired – Recalibrate the measuring
system
Cause Remedy
– Batteries almost empty – Replace the batteries (see
section 5.1 M
AINTENANCE)
56
ba77062d01 03/2014
HandyLab 100 What to do if...
Obviously incorrect
measured values
Meter does not react to
keystroke
You want to know which
software
version is in the meter
Cause Remedy
pH electrode:
– pH electrode unsuitable – Use suitable electrode
– Temperature difference
between buffer and test sample too great
– Measurement procedure not
suitable
Cause Remedy
– Operating condition unde-
fined or EMC load unallowed
Cause Remedy
– E.g., a question by the ser-
vice department
– Adjust temperature of buf-
fer or sample solutions
– Follow special procedure
– Processor reset:
Press the <ENTER> and
<ON/OFF> key simultaneously
– Switch on the meter.
Open the menu, <F1
[Menu] / Storage & config /
SystemService information. The instrument data
are displayed.
_> /
ba77062d01 03/2014
57
What to do if... HandyLab 100
58
ba77062d01 03/2014
HandyLab 100 Technical data
7 Technical data
7.1 General data
Dimensions ca. 180 x 80 x 55 mm
Weight Approx. 0.4 kg
Mechanical structure Type of protection IP 67
Electrical safety Protective class III
Test certificates CE, cETLus
Ambient
conditions
Storage - 25 °C ... + 65 °C
Operation -10 °C ... + 55 °C
Admissible relative
humidity
Power
supply
Batteries 4 x 1.5 V alkali-manganese batteries, type AA
Rechargeable batteries
Operational life Up to 1000 h without / 150 h with illumination
Sensor input Input resistance > 5 * 10
Input current < 1 * 10
Guidelines
EMC EC directive 2004/108/EC
and norms used
Meter safety EC directive 2006/95/EC
Yearly mean: < 75 %
30 days/year: 95 %
Other days: 85 %
4 x 1.2 V NiMH rechargeable batteries,
type AA (no charging function)
12
ohm
-12
A
EN 61326-1
EN 61000-3-2
EN 61000-3-3
FCC Class A
EN 61010-1
UL 61010-1
CAN/CSA-C22.2#61010-1
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IP protection class EN 60529
59
Technical data HandyLab 100
7.2 Measuring ranges, resolution, accuracy
Measuring ranges,
Measuring range Resolution
resolution Variable
pH - 2.0 ... + 20.0 0.1
- 2.00 ... + 20.00 0.01
- 2.000 ... + 19.999 0.001
U [mV] - 2500 ... + 2500 1
- 1200.0 ... + 1200.0 0.1
T [°C] - 5.0 ... + 105.0 0.1
T [°F] 23.0 ... + 221.0 0.1
Manual
temperature input
Variable Range Increment
T
T
[°C] - 25 ... + 130 1
manual
[°F] -13 ... + 266 1
manual
Accuracy (± 1 digit) Variable Accuracy Temperature of the test
sample
pH / range *
- 2.0 ... + 20.0 ± 0.1 + 15 °C ... + 35 °C
- 2.00 ... + 20.00 ± 0.01 + 15 °C ... + 35 °C
- 2.000 ... + 19.999 ± 0.005 + 15 °C ... + 35 °C
U [mV] / range
- 2500 ... + 2500 ± 1 + 15 °C ... + 35 °C
-1200.0 ... +1200. ± 0.3 + 15 °C ... + 35 °C
T [°C] / temperature sensor
NTC 30 ± 0.1
PT 1000 ± 0.1
* when measuring in a range of ± 2 pH around a calibration point
Note
The accuracy values specified here apply exclusively to the meter. The
accuracy of the electrodes and buffer solutions has to be taken into
account additionally.
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HandyLab 100 Lists
8Lists
This chapter provides additional information and orientation aids.
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.
Index The index will help you to find the topics that you are looking for.
Glossary
Adjusting To manipulate a measuring system so that the relevant value (e.g. the
displayed value) differs as little as possible from the correct value or
a value that is regarded as correct, or that the difference remains within the tolerance.
Asymmetry see zero point
AutoRange Name of the automatic selection of the measuring range.
Calibration Comparing the value from a measuring system (e.g. the displayed val-
ue) to the correct value or a value that is regarded as correct. Often,
this expression is also used when the measuring system is adjusted
at the same time (see adjusting).
The electromotive force U of the combination electrode is the measur-
Electromotive force of
an electrode
able electromotive force of an electrode in a solution. It equals the
sum of all the galvanic voltages of the combination electrode. Its dependency on the pH results in the electrode function, which is characterized by the parameters, slope and zero point.
The junction is a porous body in the housing wall of reference elec-
Junction
trodes or electrolyte bridges. It arranges the electrical contact between two solutions and makes the electrolyte exchange more
difficult. The expression, junction, is also used for ground or junctionless transitions.
Measured parameter The measured parameter is the physical dimension determined by
measuring, e.g. pH, conductivity or D.O. concentration.
Measured value The measured value is the special value of a measured parameter to
be determined. It is given as a combination of the numerical value and
unit (e. g. 3 m; 0.5 s; 5.2 A; 373.15 K).
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Lists HandyLab 100
ORP The ORP is caused by oxidizing or reducing substances dissolved in
water if these substances become effective on an electrode surface
(e.g. a gold or platinum surface).
pH value The pH value is a measure of the acidic or basic effect of an aqueous
solution. It corresponds to the negative decadic logarithm of the molal
hydrogen ions activity divided by the unit of the molality. The practical
pH value is the value of a pH measurement.
Potentiometry Name of a measuring technique. The signal (depending on the mea-
sured parameter) of the electrode is the electrical potential. The electrical current remains constant.
Reset Restoring the original condition of all settings of a measuring system.
Resolution Smallest difference between two measured values that can be dis-
played by a meter.
Slope The slope of a linear calibration function.
Stability control
Function to control the measured value stability.
(AutoRead )
Standard solution The standard solution is a solution where the measured value is
known by definition. It is used to calibrate a measuring system.
Test sample Designation of the test sample ready to be measured. Normally, a test
sample is made by processing the original sample. The test sample
and original sample are identical if the test sample was not processed.
Zero point The zero point of a pH combination electrode is the pH value at which
the electromotive force of the pH combination electrode at a specified
temperature is zero. Normally, this is at 25 °C.
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HandyLab 100 Lists
Index
A
Authorized use . . . . . . . . . . . . . . . . . . . . . . 10
Automatic switch-off function . . . . . . . . . . . 15
AutoRead
pH . . . . . . . . . . . . . . . . . . . . . . . . . 26, 28
B
Battery compartment . . . . . . . . . . . . . . 13, 51
C
Calibration
pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Calibration evaluation
pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Calibration interval . . . . . . . . . . . . . . . . . . . 36
Calibration points
pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Connectors . . . . . . . . . . . . . . . . . . . . . . . 8
D
Dataset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Date and time . . . . . . . . . . . . . . . . . . . . . . . 21
Default settings
Measured parameter . . . . . . . . . . . . . . 49
System settings . . . . . . . . . . . . . . . . . . 50
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
E
Energy saving feature . . . . . . . . . . . . . . . . 14
Measurement dataset . . . . . . . . . . . . . . . . 46
Measuring
ORP . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Menu for calibration and measurement settings
pH/ORP . . . . . . . . . . . . . . . . . . . . . . . . 30
Menus (navigation) . . . . . . . . . . . . . . . . . . 17
Messages . . . . . . . . . . . . . . . . . . . . . . . . . 18
O
Operational safety . . . . . . . . . . . . . . . . . . . 10
P
pH buffer sets . . . . . . . . . . . . . . . . . . . . . . 32
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . 9
R
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
S
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Scope of delivery . . . . . . . . . . . . . . . . . . . . 13
Setting the date . . . . . . . . . . . . . . . . . . . . . 14
Setting the time . . . . . . . . . . . . . . . . . . . . . 14
Single-point calibration
pH . . . . . . . . . . . . . . . . . . . . . . . . . 38, 42
Slope
pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Stability control
Automatic . . . . . . . . . . . . . . . . . . . . . . . 24
Storing in memory . . . . . . . . . . . . . . . . . . . 46
I
Initial commissioning . . . . . . . . . . . . . . 13, 14
Initialize . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Interval for calibration . . . . . . . . . . . . . . . . . 36
K
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
M
Measured value display . . . . . . . . . . . . . . . 17
Measurement accuracy . . . . . . . . . . . . . . . 36
Measurement data memory
Edit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Erase . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Storage locations . . . . . . . . . . . . . . . . . 46
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T
Temperature measurement
pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Three-point calibration
pH . . . . . . . . . . . . . . . . . . . . . . . . . 39, 43
Two-point calibration
pH . . . . . . . . . . . . . . . . . . . . . . . . . 38, 43
Z
Zero point of pH electrode . . . . . . . . . . . . . 32
63
Lists HandyLab 100
64
ba77062d01 03/2014
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