Operating manual
AR
M
O
6
7
1
9
2
7
O
°
C
m
g/l
ARng
TP
RCL
STO
C
A
L
handylab multi 12
ba75371e03 11/2009
pH/Dissolved Oxygen/Conductivity
Pocket Meter
Cond 330i/340i
Accuracy when
going to press
Warranty We guarantee the instrument described for 3 years from the date of
The use of advanced technology and the high quality standard of our
instruments are the result of continuous development. This may result
in differences between this operating manual and your instrument. Also, we cannot guarantee that there are absolutely no errors in this manual. Therefore, we are sure you will understand that we cannot accept
any legal claims resulting from the data, figures or descriptions.
purchase.
The instrument warranty covers manufacturing faults that are discovered within the warranty period. The warranty does not cover components that are replaced during maintenance work, e.g. batteries.
The warranty claim extends to restoring the instrument to readiness for
use but not, however, to any further claim for damages. Improper handling or unauthorized opening of the instrument invalidates any warranty claim.
Copyright
© Mainz, SI Analytics GmbH, 2009
Reproduction in whole - or even in part - is prohibited without the
express written permission of SI Analytics GmbH, Mainz.
Printed in Germany.
2
ba75371e03 11/2009
handylab multi 12 List of contents
handylab multi 12 - List of contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 General features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Jack field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.5 Operating structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.6 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Switching on the measuring instrument . . . . . . . . . . . . . . . . . 17
4.2 pH value / ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.2 Measuring the pH value . . . . . . . . . . . . . . . . . . . . . . . 20
4.2.3 Measuring the ORP voltage . . . . . . . . . . . . . . . . . . . . 21
4.2.4 pH calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.3 Dissolved oxygen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.3.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.3.2 Measuring the D. O. concentration . . . . . . . . . . . . . . . 28
4.3.3 Measuring the D. O. saturation . . . . . . . . . . . . . . . . . 29
4.3.4 AutoRead AR (Drift control) . . . . . . . . . . . . . . . . . . . . 30
4.3.5 D. O. calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.3.6 Salt content correction . . . . . . . . . . . . . . . . . . . . . . . . 34
4.4 Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.4.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.4.2 Measuring the conductivity . . . . . . . . . . . . . . . . . . . . . 37
4.4.3 Measuring the salinity . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.4.4 AutoRead AR (Drift control) . . . . . . . . . . . . . . . . . . . . 38
4.4.5 Determining the cell constant (Calibration in the
control standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.5 Calibration intervals (Int 3, Int 4, Int 5) . . . . . . . . . . . . . . . . . . 42
4.6 Saving data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.6.1 Saving manually . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.6.2 Switching on AutoStore (Int 1) . . . . . . . . . . . . . . . . . . 45
4.6.3 Outputting the data storage . . . . . . . . . . . . . . . . . . . . 47
4.6.4 Clearing the memory . . . . . . . . . . . . . . . . . . . . . . . . . 53
ba75371e03 11/2009
3
List of contents handylab multi 12
4.7 Transmitting data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
4.7.1 Data transmission interval (Int 2) . . . . . . . . . . . . . . . . 54
4.7.2 PC/external printer (RS232 interface) . . . . . . . . . . . . . 56
4.7.3 Remote control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
4.8 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
4.9 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . . . . . 65
5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
5.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6.1 pH system messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6.2 Oxi system messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
6.3 Conductivity system messages. . . . . . . . . . . . . . . . . . . . . . . . 70
6.4 General errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
7 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
4
ba75371e03 11/2009
handylab multi 12 Overview
AR
M
O
6
7
1
9
2
7
O
°
C
m
g/l
ARng
TP
RCL
STO
C
A
L
1
2
3
1 Overview
1.1 General features
The compact precision handheld meter handylab multi 12 enables you to
carry out pH measurements, dissolved oxygen (D. O.) measurements and
conductivity measurements quickly and reliably.
The handylab multi 12 handheld meter provides the maximum degree of operating comfort, reliability and measuring certainty for all applications.
The proven MultiCal
®
and OxiCal® calibration procedures and the procedures to determine/set up the cell constant support you in your work with the
meter. The special AutoRead function enables precise measurements.
ba75371e03 11/2009
1 Keypad
2 Display
3 Jack field
5
Overview handylab multi 12
M
CAL
STO
RUN/ENTER
AR
RCL
M
STO
CAL
RCL
AR
RUN/ENTER
1.2 Keypad
Key functions
Select the measured variable <M>:
– pH value / ORP voltage
– D. O. concentration / D. O. saturation
– Conductivity / salinity
Save a measured value
<STO>
Switch measuring instrument on/off
<ON/OFF>
Calibrate the currently set measured variable
<CAL>
Display/transmit measured values
<RCL>
Activate/deactivate the AutoRead function
<AR>
Select the measuring mode, increase values,
scroll
<▲ >
6
Select the measuring mode, decrease values,
scroll
<▼ >
Confirm entries, start AutoRead,
output measured values
<RUN ENTER>
ba75371e03 11/2009
handylab multi 12 Overview
ARng
Tref20
AutoCal DIN
Lin
TDS
cm
M
°
F
/
K
%
Time
Baud
Day.Month No.
Ident
Year
8
8.
8
8
8
8
°
C
%
mg/l
TP
1
mV/pH
UpH SalO
S
Tref25
nLF
AutoCal TEC
RCL
Auto
Store
LoBat
Cal
AR
1/
cm
Sal
mbar
S/
m
cm
Status display
Meas. value display
Function and
temperature display
Sensor symbol
5
13
4
2
1.3 Display
1.4 Jack field
ba75371e03 11/2009
1 D. O. probe or conductivity measuring cell
2 pH electrode
3 pH temperature probe
4 Plug-in power supply unit
5 RS232 serial interface
7
Overview handylab multi 12
1.5 Operating structure
The following overview diagram shows which keys you have to press to select between the different measuring modes:
Note
When a D. O. probe or a conductivity measuring cell with a temperature
probe is connected, the measuring instrument recognizes the probe or measuring cell and automatically switches to the oxygen measuring mode or conductivity measuring mode last selected. As soon as the probe/measuring cell
is disconnected, the instrument switches to the pH or ORP measuring mode.
8
ba75371e03 11/2009
handylab multi 12 Overview
1.6 Technical data
Dimensions
and weight
Mechanical struc-
ture
Electrical safety
Test certificates
Ambient condi-
tions
Length [mm] 172
Width [mm] 80
Height [mm] 37
Weight [kg] approx. 0.3
Type of protection IP 66
Protective class III
cETLus, CE
Storage - 25 °C ... + 65 °C
Operation -10 °C ... + 55 °C
Relative atmospheric humidity annual average < 90 %
pH/ORP measur-
ing ranges
Precision of
pH/ORP (± 1 digit)
pH correction
function
Oxi measuring
ranges
Measuring range Resolution
pH - 2.00 ... + 19.99 0.01
U [mV] - 1999 ... + 1999 1
T [°C] - 5.0 ... + 105.0 0.1
pH (after calibration) ± 0.01
U [mV] ± 1
T [°C] ± 0.1
Temperature input
Manually [°C] - 20 ... + 130
mg/l %
Measuring range I
Resolution
0 ... 19.99
0.01
0 ... 199.9
0.1
ba75371e03 11/2009
9
Overview handylab multi 12
mg/l %
Precision of
Oxi (± 1 digit)
Measuring range II
Resolution
Concentration ± 0.5 % of measured value
0 ... 90.0l
0.1
0 ... 600
1
at ambient temperature of 5 °C ... 30 °C
Saturation ± 0.5 % of measured value
when measuring in the range of
± 10 K around the calibration temperature
Correction
functions of Oxi
Measuring ranges
of Conductivity
Precision of
Conductivity (± 1
digit)
Temperature
< 2 % at 0 ... 40 °C
compensation
T [°C] ± 0.1
Salinity correction 0 ... 70.0 SAL
Air pressure correction Automatic through built-in pressure sensor
in the range 500 ... 1100 mbar
Measuring range Resolution
ӕ [µS/cm] 0 ... 1999 1
ӕ [mS/cm] 0.00 ... 19.99
0.0 ... 199.9
0 ... 500
SAL 0.0 ... 70.0 accord-
ing to the IOT table
T [°C] − 5.0 ... + 105.0 0.1
0.01
0.1
1
0.1
ӕ Nonlinear compensation :
Precision Temperature of material
under test
± 0.5 % 0 °C ... 35 °C
according to EN 27 888;
± 0.5 % 35 °C ... 50 °C
extended nLF function
10
SAL Range 0.0 ... 42.0
Accuracy Sample temperature
± 0.1 5 °C ... 25 °C
± 0.2 25 °C ... 30 °C
T [°C] ± 0.1
ba75371e03 11/2009
handylab multi 12 Overview
Cell constant,
C [cm-1] 0.450 ... 0.500
calibrating
Reference temper-
Tref Can be set to 20 °C or 25 °C
ature of Conduc-
tivity
Serial interface Automatic switchover if a PC or printer is connected.
Type RS232, data output
Baud rate Can be set to 1200, 2400, 4800, 9600 Baud
Data bits 8
Stop bit 2
Parity None
Power supply
Handshake RTS/CTS + Xon/Xoff
Cable length Max. 15 m
Batteries 4 x 1.5 V alkali-manganese batteries,
Type AA
Operational life approx. 3000 operating hours
Mains FRIWO FW7555M/09, 15.1432.500-00
Friwo Part. No. 1883259
Input: 100 ... 240 V ~ / 50 ... 60 Hz / 400 mA
Output: 9 V = / 1.5 A
Connection max. overvoltage category II
Primary plugs contained in the scope of
delivery: Euro, US, UK and Australian.
ba75371e03 11/2009
11
Overview handylab multi 12
FCC Class A Equipment Statement
Note: This equipment has been tested and found to comply with
the limits for a Class A digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is
operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to
correct the interference at his own expense.
Applicable
guidelines and
norms
EMC EC guideline 2004/108/EC
EN 61326-1
EN 61000-3-2
EN 61000-3-3
FCC Class A
Instrument safety EC guideline 2006/95/EC
EN 61010-1
ANSI/UL 61010-1
CAN/CSA-C22.2 No. 61010-1
Climatic class VDI/VDE 3540
Type of protection EN 60529
12
ba75371e03 11/2009
handylab multi 12 Safety
2Safety
This operating manual contains basic instructions that you must follow during
the commissioning, operation and maintenance of the measuring instrument.
Consequently, all responsible personnel must read this operating manual
carefully before working with the measuring system. The operating manual
must always be available within the vicinity of the measuring system.
Target group The measuring instrument was developed for work in the field and in the lab-
oratory.
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 The individual chapters of this operating manual use the following safety in-
struction to indicate various types of danger:
Warning
indicates instructions that must be followed precisely in order to avoid the
possibility of slight injuries or damage to the instrument or the environment.
Further notes
Note
indicates notes that draw your attention to special features.
Note
indicates cross-references to other documents, e.g. operating manuals.
2.1 Authorized use
The authorized use of the measuring instrument consists exclusively of the:
z pH and ORP measurement
z measurement of the oxygen content and
z measurement of the conductivity, salinity and temperature
in the field and laboratory.
The technical specifications as given in section 1.6 T
observed. Only the operation and running of the measuring instrument according to the instructions given in this operating manual is authorized. Any
other use is considered to be unauthorized.
ECHNICAL DATA must be
ba75371e03 11/2009
13
Safety handylab multi 12
2.2 General safety instructions
This instrument is built and inspected according to the relevant guidelines
and norms for electronic measuring instruments (see section 1.6 T
DATA).
It left the factory in a safe and secure technical condition.
ECHNICAL
Function and oper-
ating safety
The smooth functioning and operational safety of the measuring instrument
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 measuring instrument
can only be guaranteed under the environmental conditions that are in specified in section 1.6 T
ECHNICAL DATA.
If the instrument was transported from a cold environment to a warm environment, the formation of condensate can lead to the faulty functioning of the instrument. In this event, wait until the temperature of the instrument reaches
room temperature before putting the instrument back into operation.
Safe operation If safe operation is no longer possible, the instrument must be taken out of
service and secured against inadvertent operation!
Safe operation is no longer possible if the measuring instrument:
z has been damaged in transport
z has been stored under adverse conditions for a lengthy period of time
z is visibly damaged
z no longer operates as described in this manual.
Obligations of the
purchaser
14
If you are in any doubt, please contact the supplier of the instrument.
The purchaser of the measuring instrument must ensure that the following
laws and guidelines are observed when using dangerous substances:
z EEC directives for protective labor legislation
z National protective labor legislation
z Safety regulations
z Safety datasheets of the chemical manufacturers.
ba75371e03 11/2009
handylab multi 12 Commissioning
3 Commissioning
3.1 Scope of delivery
z handylab multi 12 handheld meter
z Operating manual and short operating manual
z 4 batteries, 1.5 V Mignon type AA (in the instrument)
3.2 Initial commissioning
Perform the following activities:
z Set the date and time
z Connect the plug-in power supply (optional)
Setting the date
and time
1 Press the <M> key and hold it down.
2 Press the <ON/OFF> key.
The display test appears briefly on the display.
3 Press the <RUN/ENTER> key repeatedly until the date ap-
pears on the display.
4 Set the date of the current day with <▲> <▼>.
5 Confirm with <RUN/ENTER>.
The date (month) flashes in the display.
6 Set the current month with <▲> <▼>.
7 Confirm with <RUN/ENTER>.
The year appears on the display.
8 Set the current year with <▲> <▼>.
9 Confirm with <RUN/ENTER>.
The hours flash on the display.
10 Set the current time with <▲> <▼>.
11 Confirm with <RUN/ENTER>.
The minutes flash on the display.
ba75371e03 11/2009
12 Set the current time with <▲> <▼>.
13 Confirm with <RUN/ENTER>.
The instrument switches to a measuring mode.
15
Commissioning handylab multi 12
2
1
3
Connecting the
plug-in power sup-
ply
You can either operate the measuring instrument with batteries or with the
plug-in power supply. The plug-in power supply supplies the measuring instrument with low voltage (12 VDC). This saves the batteries.
Warning
The line voltage at the operating site must lie within the input voltage range
of the original plug-in power supply (see section 1.6 T
ECHNICAL DATA).
Warning
Use original plug-in power supplies only (see
section 1.6 T
ECHNICAL DATA).
1 Plug the jack (1) into the socket (2) of the measuring instru-
ment.
2 Connect the original SI Analytics plug-in power supply (3) to an
easily accessible mains socket.
16
ba75371e03 11/2009
handylab multi 12 Operation
4 Operation
4.1 Switching on the measuring instrument
1 Press the <ON/OFF> key.
The display test appears briefly on the display.
After this, the measuring instrument automatically switches to
the measuring mode.
Measuring mode
when switching on
Connected sensor Measuring mode
No sensor or pH/ORP
electrode
D. O. probe or conductivity
measuring cell
2 sensors of any type Last selected measuring mode
Note
The measuring instrument has an energy saving feature to avoid unnecessary battery depletion. The energy saving feature switches the measuring instrument off if no key has been pressed for an hour.
The energy saving feature is not active
z if the power is supplied by the plug-in power supply,
z if the AutoStore function is active,
z if the communication cable and a PC with a running communication pro-
gram are connected,
z if the printer cable is connected (for external printers).
pH or ORP measurement (depending on
the last selected setting)
Last selected measuring mode
AutoRange
measurement
range selection
ba75371e03 11/2009
There are several measuring ranges available for both oxygen and conductivity measurements. As a rule, the measuring instrument is in the measuring
range with the highest possible resolution. If a measuring range is exceeded,
AutoRange causes the measuring instrument to change automatically to the
next higher measuring range.
The AutoRange function is always active with oxygen and conductivity measurements and cannot be switched off.
Note
The measuring ranges for oxygen and conductivity measurements can be
found in section 1.6 T
ECHNICAL DATA.
17
Operation handylab multi 12
4.2 pH value / ORP voltage
4.2.1 General information
Preparatory
activities
Perform the following preparatory activities when you want to measure:
1 Connect the pH electrode to the measuring instrument.
If necessary, press the <M> key repeatedly until the status dis-
play pH (pH measurement) or U (measurement of the ORP
voltage) appears.
2 Adjust the temperature of the buffer solutions or test solutions,
or measure the current temperature, if you measure without a
temperature probe.
3 Calibrate or check the measuring instrument with the elec-
trode.
4 Using <▲ > <▼>, toggle between the pH or mV measuring
modes.
Note
Incorrect calibration of pH electrodes leads to incorrect measured values.
Calibrate regularly before measuring. You can only connect electrodes of the
NTC30 type or without temperature probe.
Warning
When connecting an earthed PC/printer, measurements cannot be performed in earthed media as incorrect values would result. The RS232 interface is not galvanically isolated.
18
ba75371e03 11/2009
handylab multi 12 Operation
Temperature
measurement in
pH measurements
You can perform pH measurements with or without a temperature probe as
well as with the temperature probe of an oxygen sensor or a conductivity
measuring cell. The measuring instrument recognizes which sensors are
connected and switches automatically to the correct mode for the temperature measurement.
The following cases are distinguishable.
Temperature probe Display Mode
pH Cond or
Oxi
yes - TP Automatic with
pH temperature probe
yes yes TP
- - Manual
-yesTP
flashes
The temperature value of the
second probe (Cond or Oxi) in
the same sample is taken
over for the pH measurement*
* If you do not wish that, you can:
– either disconnect the 2nd sensor and use the manual temperature input
or
– use an electrode with a temperature probe.
If a temperature probe is connected, it is indicated on the display by TP.
Note
When calibrating without a temperature probe (no TP display indicator displayed), enter the current temperature of the respective buffer solution manually using the <▲> <▼> keys while keeping the <RUN/ENTER> key
depressed.
ba75371e03 11/2009
19
Operation handylab multi 12
Tref20
Lin
Cal
8
1
S
SalOU
%
mg/l
mV/pH
1/
cm
Sal
AutoCal DIN
Tref25
nLF
AutoCal TEC
RCL
Auto
Store
LoBat
ARng
AR
Time
Baud
Day.Month No.
Ident
Year
mbar
TDS
cm
M
°
F
/
K
%
S/
m
cm
8
4
2
9
9
6
°
C
TP
pH
4.2.2 Measuring the pH value
1 Perform the preparatory activities according to section 4.2.1.
2 Immerse the pH electrode in the test sample.
3 Press the <▲> <▼> keys until pH appears in the status display.
The pH value appears on the display.
AutoRead AR
(Drift control)
4 When measuring without a connected temperature probe:
Options:
z Determine the current temperature using a thermometer
and, while keeping the <RUN/ENTER> key depressed, enter this temperature value with <▲> <▼>.
z TP display indicator not displayed, socket for the second
probe is free:
Connect the second probe (Oxi or Cond) and immerse it in
the same sample. TP flashes, the temperature is automatically measured using the second probe.
The AutoRead function (drift control) checks the stability of the measurement
signal. The stability has a considerable impact on the reproducibility of the
measured values.
For identical measurement conditions, the following criteria apply:
Reproducibility Response time
Better than 0.02 > 30 seconds
20
1 Call up the pH measuring mode with <▲> <▼>.
2 Activate the AutoRead function with <AR>.
The current measured value is frozen (hold function).
ba75371e03 11/2009
handylab multi 12 Operation
/pH
Tref20
Cal
8
TDS
S
8
1
pH
SalO
%
mg/l
1/
cm
Sal
AutoCal DIN
Lin
Tref25
nLF
AutoCal TEC
RCL
Auto
Store
LoBat
ARng
AR
Time
Baud
Day.Month No.
Ident
Year
mbar
cm
M
°
F
/
K
%
S/
m
cm
8
4
2
2
3
°
C
TP
U
mV
3 Start AutoRead with <RUN/ENTER>.
AR flashes until a stable measured value is reached.
This measured value is transmitted to the interface.
4 If necessary, start the next AutoRead measurement with
<RUN/ENTER>.
5 To terminate the AutoRead function: Press the <AR> key.
Note
The current AutoRead measurement can be terminated at any time (accepting the current value) by pressing <RUN/ENTER>.
4.2.3 Measuring the ORP voltage
In conjunction with an ORP electrode, e.g. BlueLine 31Rx, the measuring instrument can measure the ORP voltage (U) of a solution.
1 Perform the preparatory activities according to section 4.2.1.
2 Submerse the Redox electrode in the sample.
3 Press the <▲> <▼> keys until the U status display appears.
The ORP voltage (mV) of the sample appears on the display.
4 Wait for a stable measured value.
Note
ORP electrodes are not calibrated. However, you can check ORP electrodes
using a test solution.
ba75371e03 11/2009
21
Operation handylab multi 12
4.2.4 pH calibration
Why calibrate? pH electrodes age. This changes the asymmetry (zero point) and slope of the
pH electrode. As a result, an inexact measured value is displayed. Calibration
determines the current values of the asymmetry and slope of the electrode
and stores them in the measuring instrument. Thus, you should calibrate at
regular intervals.
When to calibrate? z After connecting another electrode
z When the sensor symbol flashes:
– after the calibration interval has expired
– after a voltage interruption, e. g. after changing the batteries
AutoCal TEC is specially matched to the SI Analytics technical buffer solutions as a fully
automatic two-point calibration. The buffer solutions are automatically rec-
ognized by the measuring instrument. Depending on the instrument setting
(see section 4.8 C
ONFIGURATION), the instrument displays the relevant buffer
nominal value or the current electrode voltage in mV. The calibration can be
terminated after the first buffer solution. This corresponds to a single-point
calibration. To do this, the instrument uses the Nernst slope (-59.2 mV/pH
at 25 °C) and determines the asymmetry of the electrode.
AutoRead The calibration procedure automatically activates the AutoRead function.
The current AutoRead measurement can be terminated at any time (accepting the current value) by pressing <RUN/ENTER>.
Displaying the
calibration data
Printing the
calibration
protocol
You can view the data of the last calibration on the display. The proceeding
is described on page 50.
The calibration record contains the calibration data of the current calibration.
You can transmit the calibration protocol to a printer via the serial interface
(see O
UTPUTTING THE CALIBRATION PROTOCOL ON THE INTERFACE, page 52).
Note
You can automatically print a calibration record after the calibration. To do so,
connect a printer to the interface according to section 4.7.2 before calibrating.
After a valid calibration, the record is printed.
22
ba75371e03 11/2009
handylab multi 12 Operation
CALIBRATION PROTOCOL
02.03.01 14:19
Device No.: 12345678
Calibration pH
Cal time: 01.03.01 / 15:20
Cal interval: 7d
AutoCal TEC Tauto
Buffer 1 2.00
Buffer 2 4.01
Buffer 3 7.00 *
Buffer 4 10.01
C1 184.1 mV 25.0°C
C2 3.0 mV 25.0°C
S1 -59.4 mV/pH
ASY1 - 4 mV
Sample printout:
Calibration
evaluation
After calibrating, the measuring instrument automatically evaluates the calibration. The asymmetry and slope are evaluated separately. The worst evaluation appears on the display.
Display Asymmetry
[mV]
Slope
[mV/pH]
-15 ... +15 -60.5 ... -58
-20 ... +20 -58 ... -57
-25 ... +25 -61 ... -60.5
or
-57 ... -56
-30 ... +30 -62 ... -61
or
-56 ... -50
ba75371e03 11/2009
Clean the electrode according
to the electrode operating
manual
E3
Eliminate the error according to
chapter 6 W
HAT TO DO IF...
< -30 or
> 30
... -62 or
... -50
23
Operation handylab multi 12
/pH
mV
TDS
OU
Tref20
Cal
8
S
1
Sal
%
mg/l
1/
cm
Sal
AutoCal DIN
Lin
Tref25
nLF
RCL
Auto
Store
LoBat
ARng
AR
Time
Baud
Day.Month No.
Ident
Year
mbar
cm
M
°
F
/
K
%
S/
m
cm
8
4
2
t
1
°
C
TP
pH
C
AutoCal TEC
Preparatory
activities
AutoCal TEC For this procedure, use any two technical buffer solutions (pH values at
1 Connect the pH electrode to the measuring instrument.
If necessary, press the <M> key repeatedly until the status dis-
play pH (pH measurement) or U (measurement of the ORP
voltage) appears.
2 Keep the buffer solutions ready.
3 Adjust the temperature of the solution and measure the current
temperature if the measurement is made without the use of a
temperature probe (the TP display indicator is missing from the
display).
25 °C: 2.00 / 4.01 / 7.00 / 10.01).
Note
The calibration for pH 10.01 is optimized for the SI Analytics technical buffer
solution pH 10.01. Other buffer solutions can lead to an erroneous calibration. The correct buffer solutions are given in the SI Analytics catalog or in the
Internet.
Note
The buffer solutions are automatically recognized by the measuring instrument. Depending on the instrument setting (see section 4.8 C
the instrument displays the relevant buffer nominal value or the current electrode voltage in mV.
ONFIGURATION),
24
Starting the
calibration
Note
Skip the steps 2 and 7 if you use a pH electrode with temperature probe or
the temperature probe of a conductivity measuring cell or a D. O. probe.
1 Press the <CAL> key. The Ct1 display and the function display
AutoCal TEC appears. The sensor symbol displays the evaluation of the last calibration (or no sensor symbol in the delivery
state or after the measurement parameter has been reset).
ba75371e03 11/2009
handylab multi 12 Operation
cm
3
7
°
F
0
Cal
Tref20
Lin
0
Cal
Tref25
ARng
AutoCal DIN
Tref25
Auto
AutoCal DIN
ARng
Tref20
Lin
F
cm
1/1/
cm
AR
AR
RCL
RCL
OO UpHUpH SalSal
Store
Store
Auto
LoBat
LoBat
nLF
nLF
SalSal
%%
mg/lmg/l
mV/pHmV/pH
cm
°
mm
S/S/
cmcm
%%
//
KK
MM
TDSTDS
11
SS
mbarmbar
Time
Baud
Day.Month No.
Ident
Year
Time
Baud
Day.Month No.
Ident
Year
0
03
7
pHpH
C
°
C
°
AutoCal TEC
AutoCal TEC
ARAR
mV
88
44
22
TP
TP
/pH
mV
TDS
OU
Tref20
Cal
8
S
1
Sal
%
mg/l
1/
cm
Sal
AutoCal DIN
Lin
Tref25
nLF
RCL
Auto
Store
LoBat
ARng
AR
Time
Baud
Day.Month No.
Ident
Year
mbar
cm
M
°
F
/
K
%
S/
m
cm
8
4
2
t
2
°
C
TP
pH
C
AutoCal TEC
2 If required, enter the temperature of the first buffer solution,
while keeping the <RUN/ENTER> key depressed, using <▲>
<▼>.
3 Immerse the pH electrode in the first buffer solution.
4 Press the <RUN/ENTER> key.
The AR display indicator flashes.
The electrode voltage (mV) or the buffer nominal value appears on the display. Example:
5 When the measured value is stable, Ct2 appears.
Note
At this point, the AutoCal TEC calibration can be terminated with <M>. This
corresponds to a single-point calibration. To do this, the instrument uses
the Nernst slope (-59.2 mV/pH at 25 °C) and determines the asymmetry of
the electrode.
6 Thoroughly rinse the electrode with distilled water.
7 If required, enter the temperature of the first buffer solution,
while keeping the <RUN/ENTER> key depressed, using <▲>
<▼>.
ba75371e03 11/2009
8 Immerse the pH electrode in the second buffer solution.
25
Operation handylab multi 12
1
TDS
S
°
F
0
Cal
Tref20
Lin
0
Cal
Tref25
ARng
AutoCal DIN
Tref25
Auto
AutoCal DIN
ARng
Tref20
Lin
F
cm
1/1/
cm
AR
AR
RCL
RCL
OO UpHUpH SalSal
Store
Store
Auto
LoBat
LoBat
nLF
nLF
SalSal
%%
mg/lmg/l
mV/pHmV/pH
cmcm
°
mm
S/S/
cmcm
%%
//
KK
MM
TDS
1
S
mbarmbar
Time
Baud
Day.Month No.
Ident
Year
Time
Baud
Day.Month No.
Ident
Year
88
44
08
14
4
pHpH
C
°
C
°
AutoCal TEC
AutoCal TEC
ARAR
mV
1
22
TP
TP
O
L
S
RCL
Sal
cm
AutoCal DIN
Day.Month
S
Tref20
Cal
Ident
No.
Year
Time
Baud
1
TDS
Sal
Store
AR
Tref25
cm
C
/
%
K
TP
°
M
mbar
1/
%
m
mg/l
cm
S/
Lin
OU
nLF
Auto
LoBat
ARng
°
F
9
4
pH
5
mV/pH
AutoCal TEC
YA
S
0
RCL
Sal
cm
AutoCal DIN
Time
Day.Month
Sal
Store
AR
8
No.
Ident
Tref20
Tref25
Year
Baud
cm
C
/
%
K
TP
°
M
mbar
1/
%
m
mg/l
cm
S/
TDS
6
Lin
Cal
1
S
OU
nLF
Auto
LoBat
ARng
°
F
2
pH
mV
AutoCal TEC
9 Press the <RUN/ENTER> key.
The AR display indicator flashes.
The electrode voltage (mV) or the buffer nominal value appears on the display. Example:
10 When the measured value is stable, AR disappears. The value
of the slope (mV/pH) appears on the display. The probe symbol
shows the evaluation of the current calibration.
26
11 Press the <RUN/ENTER> key. The value of the asymmetry
(mV) appears on the display.
12 Switch to the measuring mode with <M>.
ba75371e03 11/2009
handylab multi 12 Operation
4.3 Dissolved oxygen
4.3.1 General information
You can measure the following variables:
z D. O. concentration
z D. O. saturation
The measuring instrument is supplied with the following functions:
z AutoRange (automatic switchover of the measurement range),
z The AutoRead function (drift control) for checking the stability of the mea-
surement signal. This ensures the reproducibility of the measuring signal.
For details of how to switch the AutoRead function on/off, see page 30.
Warning
When connecting an earthed PC/printer, measurements cannot be performed in earthed media as incorrect values would result.
The RS232 interface is not galvanically isolated.
Preparatory
Perform the following preparatory activities when you want to measure:
activities
1 Connect the D. O. probe to the measuring instrument. The in-
strument automatically switches over to D. O. measurement
(O
status display).
2
If the D. O. probe is already connected, press the <M> repeatedly until the O
status display appears.
2
2 Calibrate or check the measuring instrument with the sensor.
How to calibrate is described in section 4.3.5 from page 31.
3 Use <▲> <▼> to toggle between the measuring modes, D. O.
concentration (mg/L) and D. O. saturation (%).
Note
Incorrect calibration of D. O. probes will result in incorrect
measured values. Calibrate at regular intervals.
Temperature probe The D. O. probe has an integrated temperature probe that always measures
the current temperature of the test sample.
ba75371e03 11/2009
27
Operation handylab multi 12
RCL
cm
cm
M
m
S/
%
/pH
mV
pH
U
TDS
Tref20
Cal
8
S
1
Sal
1/
cm
Sal
AutoCal DIN
Lin
Tref25
nLF
AutoCal TEC
Auto
Store
LoBat
AR
Time
Baud
Day.Month No.
Ident
Year
mbar
°
F
/
K
%
6
7
1
9
2
°
C
TP
7
O
mg/l
ARng
4.3.2 Measuring the D. O. concentration
When measuring the concentration of test samples with a salt content of
more than 1 g/l, a salinity correction is required.
Note
How to enter the current salt content is described in section 4.3.6 S
TENT CORRECTION on page 34.
Switching the salt content correction on or off, see below.
To measure the D. O. concentration with and without salt content correction,
proceed as follows:
1 Perform the preparatory activities according to section 4.3.1.
2 Immerse the D. O. probe in the test sample.
3 Press the <▲> <▼> key repeatedly until the D. O. concentra-
tion in mg/l appears on the display.
ALT CON-
Switching on/off
the salt content
correction
28
Proceed as follows to switch on the salt content correction:
1 Perform the preparatory activities according to section 4.3.1.
2 Immerse the D. O. probe in the test sample.
3 While pressing the <RUN/ENTER> key, switch on the salt con-
tent correction with <▲> . The SAL display indicator appears
on the display. The specified salt content is taken into consideration during the measurement.
ba75371e03 11/2009
handylab multi 12 Operation
cm
M
cm
8
LoBat
Time
Baud
Day.Month No.
Ident
Year
%
mbar
1
S
RCL
AR
Store
Auto
Cal
°
F
1/
/
K
%
TDS
UpH Sal
mV/pH
S/
m
cm
Lin
Tref25
Tref20
nLF
AutoCal DIN
AutoCal TEC
6
7
1
4
2
5
O
°
C
mg/l
TP
Sal
ARng
Auto
Sal
mg/l
cm
M
cm
8
LoBat
Time
Baud
Day.Month No.
Ident
Year
mbar
1
S
RCL
AR
Store
Cal
°
F
1/
/
K
%
TDS
UpH Sal
mV/pH
S/
m
cm
Lin
Tref25
Tref20
nLF
AutoCal DIN
AutoCal TEC
6
7
1
9
2
8
O
°
C
TP
%
ARng
4 While pressing the <RUN/ENTER> key, switch off the salt con-
tent correction with <▼>. The SAL display indicator is no longer
displayed.
4.3.3 Measuring the D. O. saturation
You can measure the D. O. saturation as follows:
1 Perform the preparatory activities according to section 4.3.1.
2 Immerse the D. O. probe in the test sample.
3 Press the <▲> <▼> key repeatedly until the D. O. saturation in
% appears on the display.
ba75371e03 11/2009
29
Operation handylab multi 12
8
LoBat
Time
Baud
Day.Month No.
Ident
Year
Sal
%
mbar
1
S
RCL
Store
Auto
Cal
°
F
1/
cm
/
K
%
TDS
UpH Sal
mV/pH
S/
m
cm
cm
M
Lin
Tref25
Tref20
nLF
AutoCal DIN
AutoCal TEC
6
7
1
0
8
O
°
C
mg/l
TP
ARng
AR
7
4.3.4 AutoRead AR (Drift control)
The AutoRead function (drift control) checks the stability of the measurement
signal. The stability has a considerable impact on the reproducibility of the
measured values.
1 Call up the measuring mode with <M> and/or <▲> <▼> .
2 Activate the AutoRead function with <AR>. The current mea-
sured value is frozen (hold function).
3 Start AutoRead with <RUN/ENTER>.
AR flashes until a stable measured value is reached. This measured value is transmitted to the interface.
4 If necessary, start the next AutoRead measurement with
<RUN/ENTER>.
5 To terminate the AutoRead function: Press the <AR> key.
Criteria With identical measurement conditions, the following applies:
Measuring mode Reproducibility Response time
D. O. concentration Better than 0.05 mg/l > 10 seconds
D. O. saturation index Better than 0.6 % > 10 seconds
30
ba75371e03 11/2009
handylab multi 12 Operation
CALIBRATION PROTOCOL
02.03.01 14:19
Device No.: 12345678
CALIBRATION 02
Cal time: 02.03.01 / 14:19
Cal interval: 14d
OxiCal Tauto AR
Relative Slope: 0,88
Probe: +++
4.3.5 D. O. calibration
Why calibrate? D. O. probes age. This changes the slope of the D. O. probe. Calibration de-
termines the current slope of the probe and stores this value in the instrument.
When to calibrate? z After connecting another D. O. probe
z When the probe symbol flashes (after the calibration interval has expired).
Calibration
procedure
AutoRead The calibration procedure automatically activates the AutoRead function.
Displaying the
calibration data
Printing the
calibration
protocol
The calibration is performed in water vapor-saturated air. Use an air calibration vessel (accessories) for the calibration.
The AR display indicator flashes. The calibration process is finished when AR
stops flashing.
You can view the data of the last calibration on the display. The proceeding
is described on page 50.
The calibration record contains the calibration data of the current calibration.
You can transmit the calibration protocol to a printer via the serial interface
(see page 52).
Note
You can automatically print a calibration record after the calibration. To do so,
connect a printer to the interface according to section 4.7.2 before calibrating.
After a valid calibration, the record is printed.
Sample printout:
ba75371e03 11/2009
31
Operation handylab multi 12
Probe evaluation After the calibration, the measuring instrument evaluates the current status
of the probe against the relative slope. The evaluation appears on the display. The relative slope has no effect on the measuring accuracy. Low values
indicate that the electrolyte will soon be depleted and the probe will have to
be regenerated.
Display Relative slope
S = 0.8 ... 1.25
S = 0.7 ... 0.8
S = 0.6 ... 0.7
Starting the
calibration
E3
S < 0.6 or S > 1.25
Eliminate the error according to
chapter 6 W
HAT TO DO IF...
Proceed as follows to calibrate the instrument:
1 Perform the preparatory activities according to section 4.3.1.
2 Keep the air calibration vessel ready.
Note
The sponge in the air calibration vessel must be moist (not wet).
3 Put the D. O. probe into the air calibration vessel.
4 Press the <CAL> key repeatedly until the calibration mode ap-
pears. The sensor symbol displays the evaluation of the last
calibration (or no sensor symbol in the delivery state or after the
measurement parameter has been reset).
32
ba75371e03 11/2009
handylab multi 12 Operation
%
Auto
ARng
Sal
mg/l
cm
M
cm
8
LoBat
Time
Baud
Day.Month No.
Ident
Year
mbar
1
S
RCL
AR
Store
°
F
1/
/
K
%
TDS
UpH Sal
mV/pH
S/
m
cm
Lin
Tref25
Tref20
nLF
AutoCal DIN
AutoCal TEC
6
7
1
A
L
C
O
°
C
TP
Cal
mg/l
8
LoBat
Time
Baud
Day.Month No.
Ident
Year
Sal
%
mbar
1
1/
cm
TDS
UpH Sal
mV/pH
S/
m
cm
cm
M
Lin
Tref25
Tref20
nLF
AutoCal DIN
AutoCal TEC
6
7
1
8
8
0
O
Cal
AR
S
ARng
mg/l
8
LoBat
Time
Baud
Day.Month No.
Ident
Year
Sal
%
mbar
1
RCL
Store
Auto
°
F
1/
cm
/
K
%
TDS
UpH Sal
mV/pH
S/
m
cm
cm
M
Lin
Tref25
Tref20
nLF
AutoCal DIN
AutoCal TEC
6
7
1
8
8
0
O
°
C
TP
Cal
AR
S
5 Press the <RUN/ENTER> key. AutoRead is active, AR flashes.
ba75371e03 11/2009
6 As soon as a stable value is reached, the AR display indicator
7 Switch to the measuring mode with <M>.
Note
In chapter 6 W
error elimination.
stops flashing. The calibration is finished now. The value of the
relative slope appears on the display. The probe symbol shows
the probe evaluation (see page 32).
HAT TO DO IF... page 67, you will find the measures to take for
33
Operation handylab multi 12
°
C
TP
cm
M
cm
8
LoBat
Time
Baud
Day.Month No.
Ident
Year
%
mbar
1
S
RCL
AR
Store
Auto
Cal
°
F
1/
/
K
%
TDS
UpH Sal
mV/pH
S/
m
cm
Lin
Tref25
Tref20
nLF
AutoCal DIN
AutoCal TEC
6
9
6
5
5
O
mg/l
ARng
Sal
0
4.3.6 Salt content correction
A salt content correction is required in the oxygen concentration measurement of samples with a salt content of more than 1 g/l. To do this, you have
to enter the salinity equivalent of the test sample (range 0.0 - 70.0) and to
switch on the salinity correction.
Note
With the handylab multi 12 handheld meter, you can measure the salinity.
How to proceed is described in section 4.4.3 M
page 37.
EASURING THE SALINITY on
Entering the salt
content
1 Determine the salinity of the test sample (any method, see also
section 4.4.3 M
2 Press the <CAL> key repeatedly until Sal appears on the dis-
play.
3 Enter the salt content with <▲> <▼>.
4 Switch to the measuring mode with <M>.
Note
How to switch on the salt content correction is described on page 28.
EASURING THE SALINITY on page 37).
34
ba75371e03 11/2009
handylab multi 12 Operation
4.4 Conductivity
4.4.1 General information
Caution
When connecting an earthed PC/printer, measurements cannot be performed in earthed media as incorrect values would result.
The RS232 interface is not galvanically isolated.
Preparatory
activities
Temperature probe Only carry out measurements with a temperature probe. The temperature
Temperature
compensation
Perform the following preparatory activities when you want to measure:
1 Connect a conductivity measuring cell to the measuring instru-
ment. The instrument automatically switches over to conductivity measurement (status display
If the conductivity measuring cell is already connected, press
the <M> key repeatedly until the status display
pears.
2 Check the selected cell constant or calibrate the measuring in-
strument with the measuring cell (see below).
3 Check the selected cell constant (see below) or calibrate the
measuring instrument with the measuring cell (see section
4.4.5 on page 39).
4 Using <▲ > <▼>, toggle between the measuring modes, con-
ductivity (
probe is shown on the display by TP.
The nonlinear temperature compensation is set fixed and is shown on the display by nLF.
ӕ in μS/cm) or salinity (SAL).
ӕ).
ӕ or Sal ap-
Reference
temperature, Tref
ba75371e03 11/2009
The reference temperature (Tref) can be switched between 20 °C and 25 °C.
It appears on the display as Tref20 or Tref25. To switch over the reference
temperature, see S
WITCHING OVER THE REFERENCE TEMPERATURE, page 59.
35
Operation handylab multi 12
OUpH Sal
Store
AR
Auto
AutoCal DIN
AutoCal TEC
LoBat
Cal
ARng
Tref25
Tref20
Lin
nLF
Sal
%
mg/l
mV/pH
cm
°
°
TP
m
S/
cm
cm
1/
F
C
%
/
K
M
TDS
1
S
mbar
Time
Baud
Day.Month No.
Ident
Year
P
dS
I
RCL
A
L
C
L
C
S
1
LoBat
Lin
nLF
Tref20
ARng
AR
°
°
TP
F
C
%
/
K
M
%
mg/l
mV/pH
m
S/
cm
Sal
TDS
Auto
Store
Sal
mbar
OUpH
cm
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Ident
Year
2
0 7
4
cm
1/
Tref25
RCL
C
Cal
Checking the
cell constant
1 Press the <RCL> key repeatedly until CAL disp appears on the
display.
2 Press the <RUN/ENTER> repeatedly until the last calibrated
cell constant is displayed, e. g. 0.472 1/cm.
36
3 To return to the measuring mode: Press the <M> key when the
correct cell constant is displayed.
4 If you want to recalibrate the cell constant, proceed according
to section 4.4.5 D
IN THE CONTROL STANDARD) .
ETERMINING THE CELL CONSTANT (CALIBRATION
ba75371e03 11/2009
handylab multi 12 Operation
AR
8
1
cm
1/
/
K
%
°
F
RCL
Cal
Lin
Tref20
LoBat
M
m
Sal
TDS
S
Auto
Store
Sal
mbar
%
mg/l
OUpH
mV/pH
cm
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Ident
Year
0
4
2
3
0
5
°
TP
S/
cm
C
Tref25
nLF
ARng
Tref25
/
K
cm
1/
°
F
%
8
mg/l
1
RCL
ARng
AR
LoBat
Cal
Tref20
Lin
m
S/
cm
M
TDS
S
Auto
Store
Sal
mbar
%
OUpH
mV/pH
cm
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Ident
Year
2
1
2
2
3
3
°
TP
Sal
C
nLF
4.4.2 Measuring the conductivity
You can carry out the conductivity measurements as follows:
1 Perform the preparatory activities according to section 4.4.1
page 35.
2 Immerse the conductivity measuring cell in the test sample.
3 Press the < ▲> <▼> keys until in the status display, ӕ and the
unit μS/cm appears. The conductivity value appears on the display.
4.4.3 Measuring the salinity
You can carry out the salinity measurements as follows:
1 Perform the preparatory activities according to section 4.4.1
page 35.
2 Immerse the conductivity measuring cell in the test sample.
3 Press the <▲> <▼> keys until the Sal status display appears.
The salinity value appears on the display.
ba75371e03 11/2009
37
Operation handylab multi 12
8
1
cm
1/
/
K
%
°
F
RCL
Cal
Lin
Tref20
LoBat
M
m
Sal
TDS
S
Auto
Store
Sal
mbar
%
mg/l
OUpH
mV/pH
cm
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Ident
Year
0
5
2
3
0
5
°
AR
TP
S/
cm
C
Tref25
nLF
ARng
4.4.4 AutoRead AR (Drift control)
The AutoRead function (drift control) checks the stability of the measurement
signal. The stability has a considerable effect on the reproducibility of the
measured value.
1 Call up the ӕ or SAL measuring mode with <M> and/or <▲ >
<▼>.
2 Immerse the conductivity measuring cell in the test sample.
3 Activate the AutoRead function with <AR>. The current mea-
sured value is frozen (hold function).
4 Start AutoRead with <RUN/ENTER>.
AR flashes until a stable measured value is reached.
This measured value is transmitted to the interface.
38
5 If necessary, start the next AutoRead measurement with
<RUN/ENTER>.
6 To terminate AutoRead: Press the <AR> key.
Note
The current AutoRead measurement can be terminated at any time (accepting the current value) by pressing <RUN/ENTER>. You can only change to
another measuring mode after completion of AutoRead.
ba75371e03 11/2009
handylab multi 12 Operation
CALIBRATION PROTOCOL
14.04.01 11:37
Device No.: 99990000
Calibration Conductivity
Cal time: 14.04.01 / 11:37
Cal interval: 180d
Cal Std.: 0.01 mol/l KCL
40.0 °C
Conduct./Tref25: 1413µS/cm
Cell Const : 0.478 1/cm
Probe : +++
4.4.5 Determining the cell constant (Calibration in the control standard)
Why determine the
cell constant?
AutoRead The calibration procedure automatically activates the AutoRead function.
Displaying the
calibration data
Printing the
calibration
protocol
Aging slightly changes the cell constant, e. g. by coatings. As a result, an inexact measured value is displayed. The original characteristics of the cell can
often be restored by cleaning the cell. Calibration determines the current value of the cell constant and stores this value in the instrument.
Thus, you should calibrate at regular intervals.
In the delivery condition, the cell constant of the measuring instruments is set
to 0.475 cm
-1
.
The AR display indicator flashes. The calibration process is finished when AR
stops flashing.
You can view the data of the last calibration on the display. The proceeding
is described on page 50.
The calibration record contains the calibration data of the current calibration.
You can transmit the calibration protocol to a printer via the serial interface
(see page 52).
Note
You can automatically print a calibration record after the calibration. To do so,
connect a printer to the interface according to section 4.7.2 before calibrating.
After a valid calibration, the record is printed.
ba75371e03 11/2009
Sample printout:
39
Operation handylab multi 12
AR
AR
RCL
RCL
OO UpHUpH SalSal
Store
Store
AutoAuto
AutoCal DIN
AutoCal DIN
AutoCal TEC
AutoCal TEC
LoBat
LoBat
ARng
ARng
Tref20
Tref20
Lin
Lin
nLF
nLF
SalSal
%%
mg/lmg/l
mV/pHmV/pH
cmcm
°°
°°
TP
TP
mm
S/S/
cmcm
FF
CC
%%
//
KK
MM
TDSTDS
11
SS
mbarmbar
Time
Baud
Day.Month No.
Ident
Year
Time
Baud
Day.Month No.
Ident
Year
52
00 77
44
AA
LL
CC
cmcm
1/1/
Tref25
Tref25
Cal
Cal
Calibration
evaluation
Determining the
cell constant
After the calibration, the measuring instrument automatically evaluates the
current status of the calibration. The evaluation appears on the display.
-1
Display Cell constant [cm
0.450 ... 0.500 cm
E3
Eliminate the error according to
chapter 6 W
HAT TO DO IF...
Outside the range
0.450 ... 0.500 cm
]
-1
-1
You can determine the cell constant as follows:
1 Press the <CAL> key repeatedly until the status display ӕ
CAL CELL appears.
2 Press the <RUN/ENTER> key. The CAL display appears, as
well as
– the current, calibrated cell constant (with sensor symbol on
the display) or
– the fixed cell constant 0.475 1/cm (without sensor symbol
on the display). In this case, the measurement parameters
are initialized (see section 4.9 R
ESET).
3 Immerse the conductivity measuring cell in the control standard
solution, 0.01 mol/l KCI.
4 Press the <RUN/ENTER> key.
The AutoRead measurement to determine the cell constant
starts. The AR display indicator flashes until a stable signal is
reached. The cell constant determined is displayed. The measuring instrument automatically stores the cell constants.
40
ba75371e03 11/2009
handylab multi 12 Operation
S
1
LoBat
Lin
nLF
Tref20
RCL
ARng
AR
°
°
TP
F
C
%
/
K
M
%
mg/l
mV/pH
m
S/
cm
Sal
TDS
Auto
Store
Sal
mbar
OUpH
cm
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Ident
Year
3
0 7
4
Cal
cm
1/
Tref25
A
L
C
AR
5 To return to the measuring mode: Press the <M> key. The de-
termined cell constant is taken over for the measurement.
Note
If the error message E3 appears, refer to chapter 6 W
HAT TO DO IF...
ba75371e03 11/2009
41
Operation handylab multi 12
°
C
1
TP
ARng
mg/l
LoBat
Baud
Day.Month No.
Ident
Year
Sal
%
mbar
S
RCL
AR
Store
Auto
°
F
1/
cm
/
K
%
TDS
UpH Sal
mV/pH
S/
m
cm
cm
M
Lin
Tref25
Tref20
nLF
AutoCal DIN
AutoCal TEC
4
1
t
4
n
O
1
d
Time
Cal
4.5 Calibration intervals (Int 3, Int 4, Int 5)
For each measured variable, a time interval is stored. When it has expired,
you will be reminded to calibrate. After a calibration interval has expired, the
probe symbol of the relevant measured variable flashes. It is still possible to
measure. By calibrating the relevant probe, the function is reset and the interval starts anew.
The following calibration intervals are set in the factory:
Measured parameter Designation Default setting
pH/ORP Int 3 7 days
Dissolved oxygen Int 4 14 days
Conductivity Int 5 180 days
Setting the
calibration interval
You can change each of these intervals (1 ... 999 days):
1 Switch off the measuring instrument.
2 Press the <M> key and hold it down.
3 Press the <ON/OFF> key.
The display test appears briefly on the display. After this, the
measuring instrument automatically switches over to configuration.
4 Press the <RUN/ENTER> key repeatedly, until Int 3 ... 5 to-
gether with the required measured variable (pH, O
pears on the display. Example:
or ӕ) ap-
2
42
5 Set the required interval until the next calibration with <▲>
<▼>.
6 Confirm with <RUN/ENTER>.
7 Switch to the measuring mode with <M>.
ba75371e03 11/2009
handylab multi 12 Operation
Ident
K
TP
°
C
4
2
Tref20
Lin
Cal
8
1
S
SalOU
%
mg/l
mV/pH
1/
cm
Sal
AutoCal DIN
Tref25
nLF
AutoCal TEC
RCL
Auto
LoBat
ARng
AR
Time
Baud
Day.Month
Year
mbar
TDS
cm
M
°
F
/
%
S/
m
cm
4
9
9
6
pH
No.
Store
4.6 Saving data
The handylab multi 12 portable measuring instrument has an internal data
memory. It can store up to 500 datasets.
A complete data record consists of:
z Number of the storage location
z Date/time
z Measured values of the probes connected
z Temperature values of the probes connected
z Temperature measuring procedure
z ID number
You can transmit measured values (data records) to the data storage in two
ways:
z Save manually
z Switch on AutoStore (Int 1), see page 45)
4.6.1 Saving manually
You can transmit a measured value to the data storage as follows:
1 Press the <STO> key.
The current number (location number No.) of the next free storage location appears under the current measured value on the
display.
2 Confirm with <RUN/ENTER>.
The display switches to entering the ID number.
ba75371e03 11/2009
43
Operation handylab multi 12
No.
K
TP
°
C
4
2
Tref20
Lin
Cal
8
1
S
SalOU
%
mg/l
mV/pH
1/
cm
Sal
AutoCal DIN
Tref25
nLF
AutoCal TEC
RCL
Auto
LoBat
ARng
AR
Time
Baud
Day.Month
Year
mbar
TDS
cm
M
°
F
/
%
S/
m
cm
2
9
9
6
pH
Store
Ident
3 Using <▲> <▼>, enter the required ID number
(1 ... 999).
4 Confirm with <RUN/ENTER>.
The measured values are stored. The instrument changes to
the measuring mode.
Message StoFull This message appears when all of the 500 storage locations are occupied.
You have the following options:
Saving the current measured value.
The oldest measured value (storage location 1)
will be overwritten by this
Returning to the measuring mode without saving press any key
Outputting the data storage see
Clearing the memory see
Press
<RUN/ENTER>
section 4.6.3
section 4.6.4
44
ba75371e03 11/2009
handylab multi 12 Operation
LoBat
Tref25
nLF
/
K
%
RCL
Sal
°
AR
TP
C
M
m
%
mg/l
cm
S/
cm
S
8
cm
1/
°
F
ARng
Cal
Lin
Tref20
Sal
TDS
mbar
OUpH
mV/pH
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Ident
Year
F
F
O
t
1
n
1
Store
Auto
S
1
LoBat
Tref25
nLF
/
K
%
RCL
Sal
°
AR
TP
C
M
m
%
mg/l
cm
S/
cm
cm
1/
°
F
ARng
Cal
Lin
Tref20
Sal
TDS
mbar
OUpH
mV/pH
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Ident
Year
e
e
r
9
9
4
Store
Auto
F
4.6.2 Switching on AutoStore (Int 1)
The save interval (Int 1) determines the chronological interval between automatic save processes. After the fixed interval has expired, the current data
record is transmitted to the internal storage and to the interface.
Switching on
AutoStore
1 Press the <RUN/ENTER> key and hold it down.
2 Press the <STO> key. Int 1 appears on the display.
3 Set the required interval between the saving procedures with
<▲> <▼> (Selection: 5 s, 10 s, 30 s, 1 min, 5 min, 10 min,
15 min, 30 min, 60 min).
4 Confirm with <RUN/ENTER>.
The number of free memory locations appears on the display.
ba75371e03 11/2009
5 Confirm with <RUN/ENTER>.
The prompt for the ID number appears on the display.
45
Operation handylab multi 12
e
r
F
9
9
9
S
1
LoBat
Tref25
nLF
/
K
%
RCL
Sal
°
AR
TP
C
M
m
%
mg/l
cm
S/
cm
cm
1/
°
F
ARng
Cal
Lin
Tref20
Sal
TDS
mbar
OUpH
mV/pH
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Year
1
Store
Auto
Ident
6 Set the required ID number with <▲> <▼>.
7 Confirm with <RUN/ENTER>.
The measuring instrument switches to the last active measuring mode and start the measuring and saving procedure. Au-
toStore flashes on the display.
Switching off
AutoStore
As soon as all of the 500 storage locations are occupied, AutoStore is terminated (Int 1 = OFF). If there are not enough storage locations available for
your measurements:
z Output and backup the data storage (see page 47) and
z clear the memory (see page 53).
Note
The AutoStore function is interrupted if you start other functions, e.g. output
the data storage. After the other function is finished, the AutoStore function
is continued. By this, however, temporal gaps in the recording of the measured values will occur.
Switch AutoStore off by:
z setting the save interval (Int 1) to OFF, or
z switching the measuring instrument off and then on again.
46
ba75371e03 11/2009
handylab multi 12 Operation
Store
Auto
Ident
S
1
LoBat
Tref25
nLF
/
K
%
Sal
°
AR
TP
C
M
m
%
mg/l
cm
S/
cm
cm
1/
°
F
ARng
Cal
Lin
Tref20
Sal
TDS
mbar
OUpH
mV/pH
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Year
p
S
T
O
d
I
s
RCL
ARng
No.
Store
Auto
%
/
K
Sal
1/
cm
°
F
8
%
mV/pH
m
S/
cm
cm
M
Sal
LoBat
Time
Baud
Day.Month
Ident
Year
mbar
1
S
AR
Cal
TDS
UpH
Lin
Tref25
Tref20
nLF
AutoCal DIN
AutoCal TEC
0
3
6
O
mg/l
RCL
TP
°
C
5
2
0
4.6.3 Outputting the data storage
You can output the contents of the data storage:
z Stored data on the display
z Calibration data on the display
z Stored data on the serial interface
z Calibration protocol to the interface
Outputting stored
data on the display
1 Press the <RCL> key repeatedly until StO dISP appears on the
display.
2 Press the <RUN/ENTER> key.
A measured value appears on the display.
The storage location of the data record is displayed for approx.
2 s, then the respective temperature appears.
ba75371e03 11/2009
You can perform the following activities:
Display further data of the data record
(ID number, date, time, storage location)
To toggle between two saved measured variables
Advance one data record (storage location) Press <▲>
Go back one data record (storage location) Press <▼>
Press <RUN/ENTER>
Press <RUN/ENTER>
+ <M>
47
Operation handylab multi 12
Store
Auto
Ident
S
1
LoBat
Tref25
nLF
/
K
%
Sal
°
AR
TP
C
M
m
%
mg/l
cm
S/
cm
cm
1/
°
F
ARng
Cal
Lin
Tref20
Sal
TDS
mbar
OUpH
mV/pH
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Year
R
S
t
o
S
E
RCL
Note
If you want to search for a certain element of the data record (e.g. date), proceed as follows:
1 Using <RUN/ENTER>, select the element (e.g. date).
2Press <▲> or <▼> repeatedly until the required element ap-
pears on the display.
After approx. 2 s the temperature of the displayed measured
value appears.
Outputting stored
data to the
interface
1 Press the <RCL> key repeatedly until Sto SEr appears on the
display.
2 Press the <RUN/ENTER> key.
The complete contents of the storage are transmitted to the interface. During the data transmission the instrument increments the storage numbers. After the data transmission, the
instrument automatically switches to the last active measurement mode.
Note
You can cancel the transmission with <M> or <RUN/ENTER>.
48
The transmitted data contains the entire contents of the storage in incrementing order of the location numbers.
ba75371e03 11/2009
handylab multi 12 Operation
No. 1:
09.03.01 17:10
pH 10.01 25 °C
Tauto AR
Ident : 47
No. 2:
09.03.01 17:12
305 mV
Tauto
Ident : 6
No. 3:
09.03.01 17:24
7.88 mg/l 17.6° C
Tauto
Ident : 81
No. 4:
09.03.01 17:46
7.11 mg/l 17.8° C
Tauto
SAL = 17.9
Ident : 4
No. 5:
10.03.01 19:09
2.40 mS/cm 25.3 °C
Tauto
nLF
Tref25 C = 0.475 1/cm
Ident : 10
No. 6:
10.03.01 20:48
2.46 mS/cm 25.6 °C
Tauto
nLF
Tref25 C = 0.475 1/cm
Ident : 1
...
Sample printout:
ba75371e03 11/2009
49
Operation handylab multi 12
Store
Auto
Ident
S
1
LoBat
Tref25
nLF
/
K
%
Sal
°
AR
TP
C
M
m
%
mg/l
cm
S/
cm
cm
1/
°
F
ARng
Cal
Lin
Tref20
Sal
TDS
mbar
OUpH
mV/pH
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Year
d
P
C
A
L
I
S
RCL
Sal
cm
AutoCal DIN
Day.Month
S
Tref20
Cal
Ident
No.
Year
Time
Baud
1
TDS
Sal
Store
AR
Tref25
cm
C
/
%
K
TP
°
M
mbar
1/
%
m
mg/l
cm
S/
Lin
OU
nLF
AutoCal TEC
Auto
LoBat
ARng
°
F
O
9
4
pH
L
S
RCL
5
mV/pH
Sal
cm
AutoCal DIN
Time
Day.Month
Sal
Store
AR
8
No.
Ident
Tref20
Tref25
Year
Baud
cm
C
/
%
K
TP
°
M
mbar
1/
%
m
mg/l
cm
S/
TDS
6
Lin
Cal
1
S
OU
nLF
AutoCal TEC
Auto
LoBat
ARng
°
F
Y
0
1
pH
mV
S
A
RCL
Outputting the
calibration data
on the display
1 Press the <RCL> key repeatedly until CAL disp appears on
the display.
2 Press the <RUN/ENTER> key.
The data of the last calibration of all measured variables appears in the following sequence:
z pH: Slope SLO and asymmetry ASY
z Dissolved oxygen: Relative slope SLO
z Cond: Cell constant C
Information concerning the calibration procedure is output as
well.
50
3 Press <RUN/ENTER> to display the value of the asymmetry
(mV).
ba75371e03 11/2009
handylab multi 12 Operation
Cal
Day.Month
2
S
Store
Auto
Ident
1
LoBat
Tref25
nLF
/
K
%
Sal
°
AR
TP
C
M
m
%
mg/l
cm
S/
cm
cm
1/
°
F
ARng
Lin
Tref20
Sal
TDS
mbar
UpH
mV/pH
AutoCal DIN
AutoCal TEC
Time
Baud
No.
Year
O
0
8
8
S
L
RCL
O
Day.Month
Cal
4
8
S
cm
Sal
O
Store
Auto
Ident
1
LoBat
nLF
/
K
%
°
AR
TP
C
M
m
%
mg/l
S/
cm
°
F
ARng
Lin
Tref20
Sal
TDS
mbar
UpH
mV/pH
AutoCal DIN
AutoCal TEC
Time
Baud
No.
Year
0
8
C
4
7
RCL
cm
1/
Tref25
4 Press <RUN/ENTER> to display the relative slope of the D. O.
probe.
5 Press <RUN/ENTER> to display the cell constant. The dis-
played value is:
z the current, calibrated cell constant (with sensor symbol on
the display) or
z the fixed cell constant 0.475 1/cm (without probe symbol on
the display). In this case, the measured parameters are initialized (see section 4.9 R
6 With <M> you can switch back to the last active measuring
mode.
ESET).
ba75371e03 11/2009
51
Operation handylab multi 12
d
Store
Auto
Ident
S
1
LoBat
Tref25
nLF
/
K
%
Sal
°
AR
TP
C
M
m
%
mg/l
cm
S/
cm
cm
1/
°
F
ARng
Cal
Lin
Tref20
Sal
TDS
mbar
OUpH
mV/pH
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Year
R
C
A
L
S
E
RCL
CALIBRATION PROTOCOL
02.03.01 14:19
Device No.: 12345678
Calibration pH
Cal time: 01.03.01 / 15:20
Cal interval: 7d
AutoCal TEC Tauto
Buffer 1 2.00
Buffer 2 4.01
Buffer 3 7.00 *
Buffer 4 10.01
C1 174.1 mV 25.0°C
C2 -133.3 mV 25.0°C
S1 -59.4 mV/pH
ASY1 - 4 mV
Probe: +++
CALIBRATION 02
Cal time: 02.03.01 / 14:19
Cal interval: 14d
OxiCal Tauto AR
Relative Slope: 0,88
Probe: +++
Calibration Conductivity
Cal time: 14.12.00 / 11:37
Cal interval: 180d
Cal Std.: 0.01 mol/l KCL
40.0 °C
Conduct./Tref25: 1413µS/cm
Cell Const : 0.478 1/cm
Outputting the
calibration
protocol on the
interface
1 Press the <RCL> key repeatedly until CAL SEr appears on the
display.
2 Press the <RUN/ENTER> key.
The calibration protocol for all measured variables is transmitted to the interface. After the data transmission, the instrument
automatically switches to the last active measurement mode.
Sample printout:
52
ba75371e03 11/2009
handylab multi 12 Operation
4.6.4 Clearing the memory
With this function, you can delete the stored data records. 500 storage locations will then be available again.
Note
The Clear memory function only appears when there are data records stored
in the memory. Otherwise, the measuring instrument automatically switches
to the last active measuring mode.
Proceed as follows to clear all data records:
1 Switch off the measuring instrument.
2 Press the <STO> key and hold it down.
3 Press the <ON/OFF> key.
The display test appears briefly on the display.
4 Confirm the clearing process with <RUN/ENTER>.
Pressing any other key prevents the clearing, the data records
will remain stored.
Note
The calibration data remain stored and can be called up.
ba75371e03 11/2009
53
Operation handylab multi 12
Store
Auto
LoBat
Tref25
nLF
/
K
%
RCL
Sal
°
AR
TP
C
M
m
%
mg/l
cm
S/
cm
S
8
cm
1/
°
F
ARng
Cal
Lin
Tref20
Sal
TDS
mbar
OUpH
mV/pH
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Ident
Year
F
F
O
t
2
n
1
4.7 Transmitting data
You have the following possibilities of transmitting data:
z One of the following options:
– With the AutoStore function (page 45), measured values are
periodically saved internally (save interval Int 1) and output on the
interface.
– With the Data transmission interval function (Int 2), measured values
are periodically output on the interface (see below).
– AutoStore (Int 1) covers the Data transmission interval
(Int 2).
z Press the <RUN/ENTER> key
This manually triggers a data transmission of the current measured value
to the serial interface at any time - independently of the selected intervals.
z With the Output data storage function (page 47), calibration data or saved
measured values are output on the interface.
Setting the
Data transmission
interval
4.7.1 Data transmission interval (Int 2)
The interval to the data transmission (Int 2) determines the chronological interval between automatic data transmissions. After the selected interval expires, the current data record is transmitted to the interface.
The default setting for the interval is OFF.
To start the data transmission, set an interval (5 s, 10 s, 30 s, 1 min, 5 min,
10 min, 15 min, 30 min, 60 min):
1 Press the <RUN/ENTER> key and hold it down.
2 Press the <RCL> key. Int 2 appears on the display.
54
3 Set the required interval between the saving procedures with
<▲> <▼>.
ba75371e03 11/2009
handylab multi 12 Operation
4 Confirm with <RUN/ENTER>.
The measuring instrument switches to the last active measuring mode.
Note
When the AutoStore function is active at the same time, the data transmission is performed according to the setting of the save interval (Int 1). Set the
save interval (Int 1) to OFF to activate the Data transmission interval (Int 2).
ba75371e03 11/2009
55
Operation handylab multi 12
1 CTS
2 RxD
3 Ground
4TxD
4
4.7.2 PC/external printer (RS232 interface)
Via the RS 232 interface, you can transmit the data to a PC or an external
printer.
Use the Z 395 (PC) or Z 391 (ext. printer) cable.
Warning
The RS232 interface is not galvanically isolated.
When connecting an earthed PC/printer, measurements cannot be performed in earthed media as incorrect values would result.
Set up the following transmission data on the PC/printer:
Baud rate can be selected from: 1200, 2400, 4800, 9600
Handshake RTS/CTS + Xon/Xoff
PC only:
Parity none
Socket
assignment
Data bits 8
Stop bits 2
2
1
3
RS 232
REC
4.7.3 Remote control
The handheld meter can be remotely controlled from a PC. This requires a
communication kit (communication cable + communication program) which is
available upon request. The instrument is then controlled via commands that
simulate keystrokes and request the current display contents.
Note
A more detailed description is provided within the scope of delivery of the
communication kit.
56
ba75371e03 11/2009
handylab multi 12 Operation
Day.Month No.
Time
1
2
M
m
%
mg/l
cm
S/
cm
S
mbar
mV/pH
t
n
Store
Auto
LoBat
Tref25
nLF
/
K
%
RCL
Sal
°
AR
TP
C
cm
1/
°
F
ARng
Cal
Lin
Tref20
Sal
TDS
OUpH
AutoCal DIN
AutoCal TEC
Ident
Year
0
0
8
4
Baud
4.8 Configuration
You can adapt the handheld meter to your individual requirements. To do
this, the following parameters can be changed (the status on delivery is
marked in bold):
Baud rate 1200, 2400, 4800, 9600
Air pressure display Current value in mbar
(no input possible)
Baudrate
Calibration
intervals
Date/time Any
Note
You can leave the configuration menu at any time with <M> . The parameters
that have already been changed are stored.
1 Switch off the measuring instrument.
2 Press the <M> key and hold it down.
3 Press the <ON/OFF> key.
The display test appears briefly on the display. The measuring
instrument then switches automatically to the setting of the
baud rate.
– pH 1 ... 7 ... 999 dInt 3
1 ... 14 ... 999 dInt 4
–O
2
ӕ: 1 ... 180 ... 999 dInt 5
–
ba75371e03 11/2009
4 Select the required Baud rate with <▲> <▼>.
5 Confirm with <RUN/ENTER>. CAL dISP appears on the dis-
play.
57
Operation handylab multi 12
RCL
mV/pH
O
Store
Auto
Ident
S
1
LoBat
Tref25
nLF
/
K
%
Sal
°
AR
TP
C
M
m
%
mg/l
cm
S/
cm
cm
1/
°
F
ARng
Cal
Lin
Tref20
Sal
TDS
mbar
AutoCal DIN
AutoCal TEC
Time
Baud
Day.Month No.
Year
p
C
A
L
i
sd
pH
/pH
Baud
4
Day.Month No.
Time
1
M
m
%
mg/l
cm
S/
cm
S
mV/pH
t
n
Store
Auto
LoBat
Tref25
nLF
/
K
%
RCL
Sal
°
AR
TP
C
cm
1/
°
F
ARng
Cal
Lin
Tref20
Sal
TDS
OUpH
AutoCal DIN
AutoCal TEC
Ident
Year
9
4
9
mbar
P
O
8
1
°
C
TP
ARng
mg/l
LoBat
Baud
Day.Month No.
Ident
Year
Sal
%
mbar
S
RCL
AR
Store
Auto
°
F
1/
cm
/
K
%
TDS
Sal
mV/pH
S/
m
cm
cm
M
Lin
Tref25
Tref20
nLF
AutoCal DIN
AutoCal TEC
7
t
3
n
1
d
Time
Cal
pH
6 Select the required display during the pH calibration with
<▲> <▼>.
mV: Display of the current electrode voltage
/pH: Display of the buffer nominal value.
7 Confirm with <RUN/ENTER>. P mbar appears on the display.
Displaying the
air pressure
pH calibration
interval
The air pressure is only displayed if an oxygen sensor is connected. Otherwise, "---" appears.
8 Confirm with <RUN/ENTER>. Int 3 and the measured variable
pH appear on the display.
58
9 Set the required interval in days (d) with <▲> <▼>.
10 Confirm with <RUN/ENTER>. Int 4 and the measured variable
appear on the display.
O
2
ba75371e03 11/2009
handylab multi 12 Operation
°
C
1
TP
ARng
mg/l
LoBat
Baud
Day.Month No.
Ident
Year
Sal
%
mbar
S
RCL
AR
Store
Auto
°
F
1/
cm
/
K
%
TDS
UpH Sal
mV/pH
S/
m
cm
cm
M
Lin
Tref25
Tref20
nLF
AutoCal DIN
AutoCal TEC
4
1
t
4
n
O
1
d
Time
Cal
O
°
C
TP
ARng
mg/l
LoBat
Baud
Day.Month No.
Ident
Year
Sal
%
mbar
S
RCL
AR
Store
Auto
°
F
1/
cm
/
K
%
TDS
UpH Sal
mV/pH
S/
m
cm
cm
M
Lin
Tref25
Tref20
nLF
AutoCal DIN
AutoCal TEC
0
8
t
5
n
1
d
Time
Cal
1
/pH
mV
TDS
OU
Tref20
Cal
8
Sal
%
mg/l
1/
cm
Sal
AutoCal DIN
Lin
nLF
RCL
Auto
Store
ARng
AR
mbar
cm
M
°
F
/
K
%
S/
m
cm
8
4
2
°
C
TP
pH
AutoCal TEC
S
1
LoBat
Time
Baud
Day.Month No.
Ident
Year
Tref25
2
5
t
Dissolved oxygen
calibration interval
11 Set the required interval in days (d) with <▲> <▼>.
12 Confirm with <RUN/ENTER>. Int 5 and the measured variable
ӕ appear on the display.
Conductivity
calibration interval
Switching over the
reference
temperature
ba75371e03 11/2009
13 Set the required interval in days (d) with <▲> <▼>.
14 Confirm with <RUN/ENTER>. The reference temperature set
for conductivity measurements appears on the display.
15 Using <▲> <▼>, toggle between t20 and t25.
16 Confirm with <RUN/ENTER>.
The date flashes on the display.
59
Operation handylab multi 12
S
1
M
m
%
mg/l
cm
S/
cm
mbar
mV/pH
D
i
s
Store
Auto
Ident
LoBat
Tref25
nLF
/
K
%
Sal
°
AR
TP
C
cm
1/
°
F
ARng
Cal
Lin
Tref20
Sal
TDS
OUpH
AutoCal DIN
AutoCal TEC
Time
Baud
No.
Year
4
0
9
0
Day.Month
Date and time
17 Set the date of the current day with <▲> <▼>.
18 Confirm with <RUN/ENTER>.
The date (month) flashes in the display.
19 Set the current month with <▲> <▼>.
20 Confirm with <RUN/ENTER>.
The year appears on the display.
21 Set the current year with <▲> <▼>.
22 Confirm with <RUN/ENTER>.
The hours flash on the display.
23 Set the current time with <▲> <▼>.
24 Confirm with <RUN/ENTER>.
The minutes flash on the display.
25 Set the current time with <▲> <▼>.
26 Confirm with <RUN/ENTER>.
The measuring instrument switches to the last active measuring mode.
60
ba75371e03 11/2009
handylab multi 12 Operation
4.9 Reset
You can reset (initialize) the measurement parameters and the configuration
parameters separately from one another.
Measurement
parameters
pH
O
Conductivity
The following measuring parameters (pH/O
/Cond InI) can be reset to the de-
2
fault condition:
Measuring mode pH
Asymmetry 0 mV
Slope -59.16 mV
2
Measuring mode D. O. concentration
Relative slope 1.00
Salinity (value) 0.0
Salinity (function) Off
Measuring mode ӕ
Cell constant 0.475 cm
-1
(fixed)
Configuration
parameters
Note
The calibration data gets lost when the measuring parameters are reset.
Recalibrate after performing a reset.
The following configuration parameters (InI) are reset to the delivery status:
Baud rate 4800
Display during the
Buffer nominal value
pH calibration
Interval 1
(automatically saved) OFF
Interval 2
(for data transmission) OFF
ba75371e03 11/2009
61
Operation handylab multi 12
O
ARng
Y
Sal
Sal
/
K
%
TP
C
°
°
F
Store
cm
1/
1
S
M
m
%
mg/l
cm
S/
cm
mV/pH
mbar
Baud
4
Day.Month No.
Time
Auto
LoBat
Tref25
nLF
RCL
AR
Cal
Lin
Tref20
TDS
AutoCal DIN
AutoCal TEC
Ident
Year
o
n
I
n
I
pH
UpH
ARng
Y
Sal
Sal
/
K
%
TP
C
°
°
F
Store
cm
1/
1
S
M
m
%
mg/l
cm
S/
cm
mV/pH
mbar
Baud
4
Day.Month No.
Time
Auto
LoBat
Tref25
nLF
RCL
AR
Cal
Lin
Tref20
TDS
AutoCal DIN
AutoCal TEC
Ident
Year
o
n
I
n
I
O
Resetting the
measuring
parameters
1 Press the <RUN/ENTER> key and hold it down.
2 Press the <CAL> key. The setting to reset the pH measuring
parameters appears on the display.
3 Using <▲> <▼>, switch between no and YES.
YES: Resetting the pH measuring parameters
no: Retaining settings.
4 Confirm with <RUN/ENTER>.
The measuring instrument switches to the setting to reset the
O
measuring parameters.
2
62
5 Using <▲> <▼>, switch between no and YES.
YES: Resetting the O
no: Retaining settings.
6 Confirm with <RUN/ENTER>. The measuring instrument
switches to the setting to reset the Conductivity measuring parameters.
measuring parameters.
2
ba75371e03 11/2009
handylab multi 12 Operation
OUpH
ARng
Y
Sal
Sal
/
K
%
TP
C
°
°
F
Store
cm
1/
1
S
M
m
%
mg/l
cm
S/
cm
mV/pH
mbar
Baud
4
Day.Month No.
Time
Auto
LoBat
Tref25
nLF
RCL
AR
Cal
Lin
Tref20
TDS
AutoCal DIN
AutoCal TEC
Ident
Year
o
n
I
n
I
OUpH
ARng
Y
Sal
Sal
/
K
%
TP
C
°
°
F
Store
cm
1/
1
S
M
m
%
mg/l
cm
S/
cm
mV/pH
mbar
Baud
4
Day.Month No.
Time
Auto
LoBat
Tref25
nLF
RCL
AR
Cal
Lin
Tref20
TDS
AutoCal DIN
AutoCal TEC
Ident
Year
o
n
I
n
I
7 Using <▲> <▼>, switch between no and YES.
YES: Resetting the Conductivity measuring parameters.
no: Retaining settings.
8 Confirm with <RUN/ENTER>.
The measuring instrument switches to the configuration parameters.
Resetting the
configuration
parameters
ba75371e03 11/2009
9 Using <▲> <▼>, switch between no and YES.
YES: Resetting the configuration parameters
no: Retaining settings.
10 Confirm with <RUN/ENTER>.
The measuring instrument switches to the last active measuring mode.
63
Operation handylab multi 12
64
ba75371e03 11/2009
handylab multi 12 Maintenance, cleaning, disposal
1
2
5 Maintenance, cleaning, disposal
5.1 Maintenance
The measuring instrument is almost maintenance-free.
The only maintenance task is replacing the batteries. LoBat indicates that the
batteries should be changed. The batteries are then largely depleted.
Replacing the
batteries
1 Open the housing after the instrument has been switched off:
– Undo the four screws on the underside of the instrument
– Pull down the lower cover (1).
2 If necessary, take the four depleted batteries (2) out of the bat-
Warning
Make sure that the poles of the batteries are the right way round.
The
compartment. Only use leakproof alkaline manganese batteries.
ba75371e03 11/2009
tery compartment.
3 Place four new batteries (type Mignon AA) in the battery com-
partment.
4 Close the lower cover (1).
± signs on the batteries must correspond to the ± signs in the battery
65
Maintenance, cleaning, disposal handylab multi 12
Note
For maintenance of electrodes, probes and measuring cells refer to the relevant operating manuals.
5.2 Cleaning
Occasionally wipe the outside of the measuring instrument with a damp, lintfree cloth. Disinfect the housing with isopropanol as required.
Warning
The housing is made of a synthetic material (ABS). Thus, avoid contact with
acetone and similar detergents that contain solvents. Remove any splashes
immediately.
5.3 Disposal
Packing This measuring instrument is sent out in a protective transport packing.
We recommend: Keep the packing material. The original packing protects the
instrument against damage during transport.
Batteries This note refers to the battery regulation that applies in the Federal Republic
of Germany. We would ask end-consumers in other countries to follow their
local statutory provisions.
Note
This instrument contains batteries. Batteries that have been removed must
only be disposed of at the recycling facility set up for this purpose or via the
retail outlet.
It is illegal to dispose of them in household refuse.
Measuring
instrument,
Dispose of the measuring instrument as electronic waste at an appropriate
collection point. It is illegal to dispose of the instrument in household refuse.
66
ba75371e03 11/2009
handylab multi 12 What to do if...
6 What to do if...
6.1 pH system messages
Error message 0FL
Cause Remedy
pH electrode:
– Not connected – Connect electrode
Error message E3
– Air bubble in front of the
– Remove air bubble
diaphragm
– Air in the diaphragm – Extract air or
moisten diaphragm
– Cable broken – Replace electrode
– Gel electrolyte dried out – Replace electrode
Cause Remedy
Electrode
– Diaphragm contaminated – Clean diaphragm
– Membrane contaminated – Clean membrane
– Moisture in the plug – Dry plug
– Electrolyte out of date – Replenish electrolyte or
replace electrode
– Electrode worn out – Replace electrode
ba75371e03 11/2009
– Electrode broken – Replace electrode
Measuring instrument:
– Incorrect calibration procedure – Select correct procedure
– Incorrect solution temperature
– Set up correct temperature
(without temperature probe)
– Socket damp – Dry socket
67
What to do if... handylab multi 12
Buffer solutions
– Incorrect buffer solutions – Change calibration procedure
– Buffer solutions too old – Use only once.
Note the shelf life
– Buffer solutions depleted – Change solutions
No stable mea-
Cause Remedy
sured value
pH electrode:
– Diaphragm contaminated – Clean diaphragm
– Membrane contaminated – Clean membrane
Test sample:
Obviously incor-
rect measured val-
ues
– pH value not stable – Measure with air excluded if
necessary
– Temperature not stable – Adjust temperature if
necessary
Electrode + test sample:
– Conductivity too low – Use suitable electrode
– Temperature too high – Use suitable electrode
– Organic liquids – Use suitable electrode
Cause Remedy
pH electrode:
– pH electrode unsuitable – Use suitable electrode
– Temperature difference
between buffer and test
– Adjust temperature of buffers
or sample
sample too high
68
– Measurement procedure not
suitable
– Follow special procedure
ba75371e03 11/2009
handylab multi 12 What to do if...
6.2 Oxi system messages
Error message 0FL
Error message E3
Cause Remedy
Display range exceeded
Oxygen sensor
– Not connected – Connect the probe
– Cable broken – Replace probe
– Depleted – Replace probe
– Short-circuit between gold and
lead electrode
– Clean probe and replace it if
necessary
Cause Remedy
Invalid calibration
Oxygen sensor
– Electrolyte solution depleted – Regenerate probe
– Membrane contaminated – Clean membrane
Error message E7
AR flashes
continuously
– Electrode system poisoned – Regenerate probe
– Worn out – Replace probe
– broken – Replace probe
Cause Remedy
Membrane damaged
– Membrane damaged – Regenerate probe
– Membrane head not screwed
– Screw membrane head tight
on tight enough
Cause Remedy
No stable measured value
– Membrane contaminated – Clean membrane
ba75371e03 11/2009
69
What to do if... handylab multi 12
Measured value
too low
Measured value
too high
Error message OFL
Cause Remedy
– Insufficient flow – Provide flow to the probe
Cause Remedy
– High amount of dissolved
substances
– Air bubbles bump on the
membrane with high velocity
– The carbon dioxide pressure is
– Correct solubility function
using the salinity equivalent
– Avoid direct flow to the
membrane
– Measuring not possible
too high (> 1 bar)
6.3 Conductivity system messages
Cause Remedy
Error message E3
The measured value lies outside
the measuring range
– Measuring cell not connected – Connect measuring cell
– Cable broken – Replace measuring cell
Cause Remedy
– Measuring cell contaminated – Clean cell and replace it if
necessary
– Unsuitable calibration
– Check calibration solutions
solution
70
ba75371e03 11/2009
handylab multi 12 What to do if...
6.4 General errors
Display LoBat
Instrument does
not react
to keystroke
Display to
Cause Remedy
– Batteries almost empty – Exchange the batteries (see
section 5.1 M
AINTENANCE)
Cause Remedy
– Operating condition undefined
or EMC load unallowed
– Processor reset:
Hold the <CAL> key
depressed and switch the
instrument on
Cause Remedy
Probe symbol
flashes
Message StoFull
– Time-out of the interface – Check that the instrument is
connected
Cause Remedy
– Calibration interval expired – Recalibrate the measuring
system
Cause Remedy
– All memory locations are full – Output data storage and clear
data storage
ba75371e03 11/2009
71
What to do if... handylab multi 12
72
ba75371e03 11/2009
handylab multi 12 Lists
7Lists
This chapter provides additional information and orientation aids.
Abbreviations The list of abbreviations explains the indicators and the abbreviations that ap-
pear on the display and in the manual.
Specialist terms The glossary briefly explains the meaning of the specialist terms. However,
terms that should already be familiar to the target group are not described
here.
Index The index will help you to find the topics that you are looking for.
ba75371e03 11/2009
73
Lists handylab multi 12
Abbreviations
Conductivity value (international γ)
AR AutoRead (drift control)
ARng Automatic range switching
Measuring instrument measures with highest resolution
ASY Asymmetry
AutoCal TEC Automatic pH calibration with SI Analytics techni-
cal buffer solutions according to DIN 19267
-1
C Cell constant [cm
] (internat. k)
°C Temperature unit, degrees Celsius
Cal Calibration
Ct... Display indicator during calibration for pH mea-
surements. Indicates the selection of the buffer
data records for SI Analytics technical buffer solutions
E3 Error message
see chapter 6 W
HAT TO DO IF...
InI Initialization
Resets individual basic functions to the status they
had on delivery
LoBat Batteries almost empty(Low Battery)
mV Voltage unit
mV/pH Unit of the electrode slope (internat. mV)
nLF Nonlinear temperature compensation
OFL Display range exceeded (Overflow)
OxiCal Automatic calibration for D. O. measurements
pH pH value
S Slope (internat. k)
SAL Salinity
SELV Safety Extra Low Voltage
74
SLO Slope setting on calibration
TC Temperature coefficient (internat. α)
ba75371e03 11/2009
handylab multi 12 Lists
TP Temperature measurement active (temperature
probe)
25/T25 Reference temperature of 25 °C
T
Ref
U
ASY
Asymmetry
ba75371e03 11/2009
75
Lists handylab multi 12
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 Designation for the offset potential of a pH electrode. It is the measur-
able potential of a symmetrical electrode, the membrane of which is
immersed in a solution with the pH of the nominal electrode zero point
(electrodes: pH = 7).
AutoRange Name of the automatic selection of the measuring range.
AutoRead Name for a function to check the stability of the measured value.
Calibration Comparing the value from a measuring system (e. g. the displayed
value) 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).
Cell constant, k Characteristic quantity of a conductivity measuring cell, depending on
the geometry.
Conductivity Short form of the expression, specific electrical conductivity. It is a
measured value of the ability of a substance to conduct an electric current. In water analysis, the electrical conductivity is a dimension for the
ionized substances in a solution.
D. O. partial pressure Pressure caused by the oxygen in a gas mixture or liquid.
Diaphragm The junction is a porous body in the housing wall of reference elec-
trodes or electrolyte bridges. It forms the electrical contact between
two solutions and makes electrolyte exchange more difficult. The expression, junction, is also used for ground or junction-less transitions.
Electrode zero point The zero point of a pH electrode is the pH value at which the electro-
motive force of the pH electrode at a specified temperature is zero.
Normally, this is at 25 °C.
Electromotive force of
an electrode
The electromotive force U of the electrode is the measurable electromotive force of an electrode in a solution. It equals the sum of all the
galvanic voltages of the electrode. Its dependency on the pH results
in the electrode function which is characterized by the parameters,
slope and zero point.
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).
76
ba75371e03 11/2009
handylab multi 12 Lists
Measuring system The measuring system comprises all the devices used for measuring,
e. g. measuring instrument and probe. In addition, there is the cable
and possibly an amplifier, terminal strip and armature.
Molality Molality is the quantity (in Mol) of a dissolved substance in 1000 g sol-
vent.
MultiCal
®
Name stating that a measuring instrument provides several calibration
procedures.
Offset potential The measurable potential of a symmetrical electrode, the membrane
of which is immersed in a solution with the pH of the nominal electrode
zero point. The asymmetry is part of the offset potential.
ORP voltage 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).
OxiCal
®
Name for a procedure to calibrate D. O. measuring systems in water
vapor saturated air.
Oxygen saturation Short name for the relative D. O. saturation.
Note: The D. O. saturation value of air-saturated water and the D. O.
saturation value of oxygen-saturated water are different.
pH value The pH is a measure of the acidic or basic effect of an aqueous solu-
tion. 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.
Reference
temperature
Fixed temperature value to compare temperature-dependent measured values. For conductivity measurements, the measured value is
converted to a conductivity value at a reference temperature of 20 °C
or 25 °C.
Reset Restoring the original condition of all settings of a measuring system.
Resistance Short name for the specific electrolytic resistance. It corresponds to
the reciprocal value of the electrical conductivity.
Resolution Smallest difference between two measured values that can be dis-
played by a measuring instrument.
Salinity The absolute salinity S
Salt content General designation for the quantity of salt dissolved in water.
ba75371e03 11/2009
of seawater corresponds to the relationship
A
of the mass of dissolved salts to the mass of the solution (in g/Kg). In
practice, this dimension cannot be measured directly. Therefore, the
practical salinity is used for oceanographic monitoring. It is determined by measuring the electrical conductivity.
77
Lists handylab multi 12
Sample Designation of the 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.
Setting the
temperature
compensation
Name of a function that considers the temperature influence on the
measurement and converts it accordingly. Depending on the measured parameter to be determined, the temperature compensation
functions in different ways. For conductimetric measurements, the
measured value is converted to a defined reference temperature. For
potentiometric measurements, the slope value is adjusted to the temperature of the test sample but the measured value is not converted.
Slope The slope of a linear calibration function.
Slope (relative) Designation used in the D. O. measuring technique. It expresses the
relationship of the slope value to the value of a theoretical reference
probe of the same type of construction.
Standard solution The standard solution is a solution where the measured value is
known by definition. It is used to calibrate a measuring system.
TDS Total dissolved solids
Temperature
Value of the slope of a linear temperature function.
coefficient
Temperature function Name of a mathematical function expressing the temperature behav-
ior of a test sample, a probe or part of a probe.
78
ba75371e03 11/2009
Cond 330i/340i Index
Index
A
Air pressure display 58
Asymmetry 22
Authorized use 13
AutoCal TEC 22, 24
AutoRange (oxygen) 17
AutoRead
Conductivity
D. O. 30
pH 20
38
C
Calibration
Conductivity
D. O. 31
pH 22
Calibration evaluation
D. O.
32
Dissolved oxygen 32
Calibration interval 42
conductivity 59
Dissolved oxygen 59
pH 58
Calibration protocol 22
conductivity 39
D. O. 31
Cell constant 36, 39
Conductivity calibration
evaluation
Configuration parameters 61
Connecting a printer 56
39
40
D
D. O.
Measuring the concentra-
tion
28
Measuring the saturation
29
Data record 43
Default condition 61
Display 7
Drift control
Conductivity
D. O
30
pH 20
38
E
Energy saving feature 17
Error messages 69, 70
I
Initial commissioning 15
Initialization 61
Interval
Calibration (Int 3)
save 45
42
J
Jack field 7
K
Keys 6
M
Measuring 35
conductivity 37
D. O. concentration 28
D. O. saturation 29
ORP voltage 21
pH value 20
Salinity 37
Measuring mode when
switching on
Measuring ranges
oxygen
pH/ORP 9
Measuring the conductivity
17
9
37
Measuring the salinity 37
O
Operating 8
Operating safety 14
ORP electrode 21
ORP voltage 21
Oxygen
Measurement range
selection
17
P
pH calibration evaluation 23
pH value 20
Plug-in power supply 16
Precautions 13
R
Reference temperature
(conductivity)
Remote control 56
Replacing the batteries 65
Reset 61
Resetting the measuring
parameters
RS232 interface 56
RS232 socket assignment
35
62
56
S
Safety 13
Salt content correction
entering the salinity
switching on 28
Save interval 45
Saving data 43
Scope of delivery 15
Setting the baud rate 57
Setting the date 15, 60
Setting the reference
temperature
Setting the time 15, 60
Single-point calibration (pH)
59
34
22, 25
Slope 22, 31
T
Temperature compensation
(conductivity)
Temperature probe
Conductivity
D. O. 27
pH 19
Transmitting data 54
Transmitting measured
values
54
35
35
ba75371e03 11/2009
79
Index Cond 330i/340i
Two-point calibration (pH)
22, 25
80
ba75371e03 11/2009
SI Analytics GmbH
Postfach 2443
D-55014 Mainz
Hattenbergstr. 10
D-55122 Mainz
Telefon +49 (0) 61 31/66 5111
Telefax +49 (0) 61 31/66 5001
Email: support@
si-analytics.com
Internet: www.si-analytics.com
Loading...