MRC INE-DZB-712 User manual

INE-DZB-712
Portable Multi-Parameter Analyzer
Instruction Manual
PLEASE READ THIS MANUAL CAREFULLY BEFORE OPERATION
3, Hagavish st. Israel 58817 Tel: [phone], Fax: [phone] [email protected]
MRC.3.17

INE-DZB-712 Portable Multi-parameter Analyzer
1
Content
1. General
2. Specifications
3. Construction
4. Operation
5. Maintenance
6. Complete set of the Meter
7. Appendix

INE-DZB-712 Portable Multi-parameter Analyzer
2
Note:
Thanks for using INE-DZB-712 portable multi-parameter analyzer, please
read this instructions carefully before using which can help you to use the meter properly.
Meter should be sent to measurement department or the qualified department for
further inspection when it has been used for more than one year.
Introduction
COND: conductivity;
TDS: total dissolved solids
SALI: salinity
DO: dissolved oxygen
SATU: saturation of ion
CONC: concentration of ion
STD: standard buffer solution
Direct Reading :Direct Reading Measurement Mode
STD Addition: Standard Addition Measurement Mode
Sample Addition :Sample Addition Measurement Mode
GRAN Method :GRAN Method Measurement Mode.
Continuous mode: continuous measurement mode
Timed Reading: timed measurement mode
Balance mode: balance measurement mode

INE-DZB-712 Portable Multi-parameter Analyzer
3
1. General
INE-DZB-712 portable multi-parameter analyzer (hereafter refers to meter) is a new, useful
portable laboratory analyze meter which contains ion measurement unit, conductive
measurement unit, dissolved oxygen measurement unit and temperature measurement unit. It
allows inspecting the relevant parameters of above units. It also allows users to select
individual parameter for measurement according to the practical needs.
Features of the meter:
A．Ion Measurement Unit
To measure potential value, pH value (or pX value) and ion Concentration.
To measure several general ions. Meter provides several general ion modes: H+, Ag+, Na+, K+,
NH4+, Cl-, F-, NO3-, BF4-, CN-, Cu2+, Pb2+, Ca2+, etc…for easy use. User can match relevant ion
selective electrode and reference electrode to measure corresponding ion concentration
directly. When measurement finishes, user can easily transform among different concentration
units.
Apart from the ion unit provided by the meter, in case you need to measure other ion, you can
set your own ion mode provided you have this kind of ion selective electrode.
Meter has the ability of automatic recognition standard buffer solution. You can select several
pH standard buffer solutions to calibrate electrode. Total 10 different standard buffers are
provided.
User can select standard solution groups or set own standard solution groups.
With one-point、two-points and multiple-points calibration (mostly 5 points) function.
With Direct Reading concentration measurement modes.
On the basis of SCM, with high precision A/D, matched with precise measurement electrode,
meter can ensure the high precision. The valid resolution of potential can be reached to
0.01mV.
B．Conductive Measurement Unit
Meter can measure Conductivity, Resistivity, Total Dissolved Solid (TDS) and Salinity.
Within full range measurement, meter has automatic temperature compensation, automatic
calibration, automatic measurement range and automatic frequency switching functions.
With calibration function. User could calibrate Cell Constant or TDS Factor (TDS transform
coefficient).
C．Dissolved Oxygen Measurement Unit
Meter can measure Saturation and Concentration of DO, Electrode current.

INE-DZB-712 Portable Multi-parameter Analyzer
4
With automatic temperature compensation function.
With calibration function which can make Zero Oxygen, Full Scale, Air Pressure and Salinity
calibration.
D．Other Characters
Big matrix LCD, clear display, attractive design and easy for use.
Apart from ion concentration, meter allows to measure all parameters including ion unit,
conductive unit, DO unit and temperature unit simultaneously. Of cause, it also allows user to
select necessary parameters for measurement.
Supports GLP:
a. Meter requests to set operator’s number and record down the procedure of all
operators.
b. Can record down and print calibrating data.
c. Can store 200 sets measurement data in each of pH, Conductivity, TDS, Salinity and
DO measurement data if all are meet GLP regulation. Meter can also store 6 kinds of
ion measurement value including corresponding pX value and ion concentration
value 100 sets of each.
Can view, print and delete measurement data; With USB interface and software.
Can view and print the using parameter under current measurement mode as well as previous
calibration data.
There are three measurement modes: Continuous Mode,Timed Reading and Balance Mode
to meet different user’s measurement requirements.
With electricity cut off protection function which can protect the stored measurement data,
calibrating data and set parameter to be saved when meter is turned off or abnormal electricity
cut off occurred.
Low power dissipation design, with under voltage inspection, automatic Shut-off, back light
control and measurement unit intelligent management etc… which can prolong the life of
battery.
Back light design which can be used in dark area.
The protection class of meter case is IP65 with waterproof, dustproof function and is suitable
to be used in the field.
New material of PC panel is reliable.

INE-DZB-712 Portable Multi-parameter Analyzer
5
2. Specifications
Measurement Range
Resolution
Electronic Unit Accuracy
mV
(-1999.99 ~ 0), (0 ~ 1999.99) mV
0.1mV
±0.1% (FS)
pH/pX
(-2.000 ~ 19.999) pH/pX
0.01pH
±0.01pX
Conductivity
0.000μS/cm ~ 199.9mS/cm
±1.0% (FS)
Resistivity
5.00Ω.cm ~ 20MΩ.cm
TDS
0.000mg/L ~ 19.99g/L
±1.0% (FS)
Salinity
(0.0 ~ 8.00)%
±0.2% ± 1 bit
DO Concentration
(0.00 ~ 19.99)mg/L
±0.10mg/L
DO Saturation
(0.0 ~ 199.9)%
±1.0%
Temperature
(-5.0 ~ 135.0) ℃
0.2℃± 1 bit
Concentration
Measurement Range: various concentration values in correspondence to
potential measurement range and indicating electrode.
Electronic Unit Accuracy: ±0.5% ± 1 bit
Input Impedance: ＞3 X 1012Ω
Output Method: Matrix LCD screen with USB interface.
Outside Dimension: l x b x h: mm: 210×86×50.
Weight: about 0.5kg.
Normal working condition:
a. Ambient temperature : (5.0 ~ 35.0)℃
b. Relative humidity: ≤ 85%
c. Power supply: #5 AA Battery
d. No performance-affected vibrations nearby
e. No strong electromagnetic interference except the geomagnetic fie
f. No corrosive gases in surrounding
3. Construction
3.1. Front panel of meter
Meter is made up of electric unit and electrode system. Electrode
system is made up of ion selective electrode, conductive electrode
DO electrode and temperature measurement electrode.
When it is ex-factory, ion measurement electrode is equipped with
pH combination electrode. Conductive measurement electrode is
equipped with DJS-1C-F platinum black electrode, DO
measurement electrode is equipped with DO-958-S-F dissolved
oxygen electrode. (as per packing list. If you want to measure
other ion, you need to buy suitable ion selective electrode
according to practical needs. The same, you can also select other
conductive electrode with different constant. )

INE-DZB-712 Portable Multi-parameter Analyzer
6
3.2. Rare panel of meter
There are four sockets on rare panel of meter:
1. mini USB interface
2. socket for conductive measurement electrode
3. socket for ion selective electrode
4. socket for DO measurement electrode (or
temperature measurement electrode)
3.3. Keypad
3.3.1. Key function
The meter has six keys: F1, F2, F3, ENTER/MENU, CANCEL and ON/OFF/BKLIGHT keys.
In which:
a).F1/F2/F3 key:
The function is not fixed. In each mode, the actual function is in correspondence to the indication
on top of the key.
For example, in starting state as left chart, the lower part of the screen displays ‘START’,
‘MEASURE’, it means F1 is in correspondence to ‘START’. If you press this key, you can start
several functions under starting state including set measurement mode, view measurement
parameter, view stored data, etc...
On upper side of F2 is empty which means F2 key is
invalid.
F3 key is in correspondence to ‘MEASURE’ and you can
start to measure by pressing F3.

INE-DZB-712 Portable Multi-parameter Analyzer
7
b). ENTER/MENU key: Double function key with different function in each mode. Generally
‘ENTER’ is the first function and ‘MENU’ is the second.
c). CANCEL key: to quit from measurement state or to give up present setting.
d). ON/OFF/BKLIGHT key: to turn on/off meter and the control key of backlight. Under off state,
press this key, you can turn on the meter to start normal operation. When meter is turned on,
press this key, you can turn on the backlight, press again to turn off backlight. When operation
finishes, press this key for more than 4 seconds to turn off the meter.
Meter has automatic turn off function, if no key pressed within the setting time, meter will
be off automatically.
Meter has backlight time control function, user can set by himself.
Note:
Meter has power management technology, when backlight is on, meter will consume about
more 10mA current than backlight is off. In order to save power dissipation, we suggest
using back light as less as possible. After you turn on backlight to view data, try to turn off
backlight timely.
3.3.2. Key Operation
The instrument is portable meter which requires not only beautiful, good looking but also useful
and convenient. So we reduce the key number to 6 and design the operating interface considerably
to limit the amount of pressing which can ensure fast and conveniently using of the meter. Please
see following example:
Example 1: Unit name: Setup measurement mode
Meter allows several measurement modes to measure different measurement parameter, so the
operation of setting measurement mode is comparatively complicated.
In starting state, press F1 (or ENTER/MENU) and then press ‘ENTER/MENU’ key to enter into
setting measurement mode, please refer to the chart.
On left side is list of measurement parameter,
On right side is list of measurement mode,
‘←→’ is on upper side of F1; ‘↑↓’ is on upper side of F2
“CLEAE” or “SELECT” is on upper side of F3.
If you press F1, or F2, you can move cursor up/down or right/left. The function of F3 will change
automatically when cursor is moved
‘√’means the selected measurement parameter or measurement mode: reversed display means cursor
position.
When cursor is moved to a certain item, function of F3 will change automatically, you can press F3
to make a selection or to clear a selection.

INE-DZB-712 Portable Multi-parameter Analyzer
8
Meter can mostly measure 3 main parameters simultaneously. When you finish selection, press
‘ENTER/MENU ’ key, meter will save the setting and return to starting state, press ‘CANCEL’ key
meter will quit from the operation and return to starting state directly.
Example 2: Unit name: Data input
In many cases, you need to set necessary parameter. Meter has an effective data input method in
the condition of only five keys in using. In order to let user familiar with this data input method,
meter has only way of parameter setting which is displayed as the diag.
On the top is required parameter name.
On upper side is present data input area that black cursor
is flashing.
On left lower side is a little figure keypad
On right lower side is a reflection area of present key
position.
At the bottom are the pressing keys, you can move
up/down, right/left by pressing ‘F1’ and ‘F2’.
At the same time the indication on top of ‘F3’ will automatically follow up and change. When you
input any figure, the ‘-’ on keypad will be automatically amended to ‘C’ which means you can clear
previous input, in case you move keypad to this point and press ‘F3’ (at this time the indication of
‘INPUT’ will be changed to ‘CLEAR’), you can delete all of previous input and re-input. If there is
any mistake, you can amend according to this.
Ex: input data 12.6
Operation step:
a). Firstly，on top of ‘F3’ will be number ‘1’,
press F3 directly, input digit ‘1’
b). Press F1 when top of ‘F3’ number is‘2’,
press F3 input digit ‘2’
c). Press F1 twice when top of ‘F3’ number is ‘.’ ,
press F3 input digit ‘.’

INE-DZB-712 Portable Multi-parameter Analyzer
9
d). Press F1 three times and F2 once,
when top of ‘F3’ number is ‘6’, press F3 input digit ‘6’
e). Press ENTER/MENU to finish data input of ’12.6’
Note:
For all the operating instructions below, the operation of function key in correspondence
to F1, F2 and F3 will be operated according to indication and not be operated according
to actual pressing key. For example, ‘presently press F3 to start measurement’ will be
amended to ‘presently press START key to start measurement’.
In correspondence to ‘ENTER/MENU’ key, it is operated according to actual function. If
it is confirmation function, you can press ‘ENTER’ and if it is the menu function, you can
press ‘MENU’.
3.4. Accessories and selective accessories
We’ll introduce several important, necessary accessories below. They are indispensable apparatus
to guarantee some necessary functions.
Meter has IP65 protection class, so all electrode system is made
up of electrode connection water-proof system and actual
measurement electrode(6). Electrode connection water-proof
system is made up of union cap (1), top ring (2), cable obdurate
ring (3), measurement gland cover (4) and aerial plug (5).
4. Operation
4.1. Installation
a. Connection of Electrode System
In order to ensure IP65 protection class, meter has relevant water-proof parts, the installation of all
measurement electrode is as follows:
Insert correspondent measurement electrode in relevant measurement electrode socket on rare
panel of meter, then install in sequence the measurement gland cover, cable obdurate ring, top
ring and union cap, etc…

INE-DZB-712 Portable Multi-parameter Analyzer
10
For example:
Install conductive electrode, you can insert conductive electrode in conductive electrode socket
on rare panel of meter, then install in sequence measurement gland cover, cable obdurate ring,
top ring and union cap. If you want to take off measurement electrode, you can take off all
mentioned accessories in the opposite way.
Install temperature sensor, there are two ways for selection: one is using temperature sensor
directly, i.e. to install temperature sensor into DO electrode socket. The other way is: because
DO electrode consists of temperature measurement unit, when select installing DO electrode,
meter will automatically measure the temperature of solution. Generally, when you measure
DO value, you should use DO electrode, if measure other parameter, you will have two
selections. If DO electrode socket is not connected with any measurement electrode, meter will
automatically compensate through manual temperature compensation. Detailed compensation
will be varied according to different parameter.
b. USB communication line connection
If you want to adopt auxiliary communication software to connect with computer, you can link
meter and computer with USB communication line and install software properly then you can start
communication.
4.2. Power
Meter use four pieces of AA alkali battery. If it is your first time using the meter, please open the
battery cover on the back of meter and place four new AA alkali batteries correctly according to
‘+’, ‘-’ then cover the battery cover. Meter turns on automatically and in working state.
When battery is placed, but meter has no display, please recheck whether battery is placed
properly, battery is new or whether the connection is dropped off. If meter still does not work,
please contact with our company for inspection.
If you won’t use the meter for long time, please open the cover on back of the meter, take out
battery to avoid rotten which will cause damage to the meter.
If ‘Battery’ sign is displayed (on top right corner of screen), it means low battery, you need to
exchange all batteries and re-place the battery according to above mention way otherwise meter
will not guarantee the precision of measurement. Please turn off the meter before exchanging
battery.
4.3. Turn on/off the meter
a. Meter will turn on automatically every time when you placed new battery.
b. In turn off state, press ‘ON/OFF/BKLIGHT’ key to turn on the power. When meter is on, it will
inspect automatically. Wait for a while, meter enters into starting state and you can use the meter
now.
c. When using finishes, press ‘ON/OFF/ BKLIGHT’ key for more than 4 seconds, meter displays
‘Power Off’ and turns off.
d. Automatic Shut-off function, the meter will shutdown in a default time without a keypress.

INE-DZB-712 Portable Multi-parameter Analyzer
11
Note:
Please follow below regulations and use the meter carefully to avoid any damage to the meter!
In order to protect and to use the meter better, before turn on the meter, please check the
pH electrode socket on backside of meter and make sure if it is connected with
measurement electrode or short circuit plug, otherwise the high resistance apparatus of
the meter will be damaged.
If meter is not used, please connect the short circuit plug to avoid damage of the meter.
For the ion measurement unit, in order to guarantee the precision of the measurement,
suggest make zero point potential calibration after turn on the meter.
Usually when pH electrode socket is connected with short circuit plug, user could find the
displayed potential value excurse from zero point potential, at this time you need to
calibrate zero point potential (zero point potential should be 0.00mV, you can select pH
measurement parameter and view displayed zero point potential value in measurement
mode).
For detailed zero point potential calibration, please refer to the relative chapter about pH
or pX measurement mode, usually when meter enters into measurement mode, press
‘MENU’ key to select ‘Adjust mV Zero’ and then press ‘ENTER’ key.
4.4. Starting State
The starting state is shown as left chart:
The upper side of the screen shows present system time,
The lower side is present measurement mode including
measurement parameter.
At the bottom is the pressing key ‘START’, ‘MEASURE’.
Press ‘START’ key to open system menu and you can setup ‘Measurement Mode’, ‘Set Ion Mode’,
etc… Press ‘MEASURE’ key to start measurement.
4.5. Setup Function in Starting State
In this function, you can setup ‘Measurement Mode’, ‘Set Ion Mode’, ‘Date & Time’, ‘Manual
Temp.’, ‘Set Condition’, ‘System Setup’ and ‘LCD Contrast’ etc… In starting state, press
‘START’, meter displays setup menu which shown as follows:
Meter reversed displays present menu, you can press ‘↑↓’to
move to needed item（press ‘←,→’ to view main menu），press
‘ENTER’ key to select relevant mode and press ‘CANCEL’ key
to quit the selection.

INE-DZB-712 Portable Multi-parameter Analyzer
12
Measurement Mode: to set current measurement mode (Continuous mode, Timed Reading,
Balance mode or CONC) and needed measurement parameters.
Set Ion Mode: to exchange present ion mode.
For example: change from measurement C1-to F-.
Date & Time: to set time of the meter.
Manual Temp.: If meter is not connected to temperature sensor, temperature value is set by
manual.
Set Condition: to set balance condition under balance measurement mode.
System Setup: to set necessary GLP selection, automatic Shut-off and backlight time setting,
etc
LCD Contrast’: to set contrast of LCD.
4.5.1. Setup Measurement Mode
Apart from ion concentration, meter can run ion measurement unit, conductive measurement unit
and DO unit simultaneously. Each unit has one individual measurement display window. The first
window displays three measurement parameters, one is the main measurement parameter, the
second is auxiliary measurement parameter and the third is present temperature value. Other
window only displays one measurement parameter.
The ion measurement unit takes pH/pX measurement parameter and ion concentration as
main parameter while potential value as auxiliary parameter.
Conductive unit takes Conductivity, TDS and Salinity as main parameter while resistivity as
auxiliary parameter.
DO unit takes dissolved oxygen and Saturation as main parameter while DO current as
auxiliary.
Meter also allows user to select individual parameter to measure. Meanwhile, meter supports three
measurement modes: Continuous mode, Timed Reading and Balance mode.
Ion concentration supports Direct Reading.
When you have selected relevant main parameter and measurement mode, you can still measure
according to this setting next time.
Generally, if you selected one main parameter under a certain function mode, meter still allows
you to view at random all parameter under this function mode.
For example, if you select conductivity under conductive mode, in measurement, you can still
view, store, print other parameter such as TDS, salinity, etc…, (except pH and PX. they can not be
selected simultaneously.)

INE-DZB-712 Portable Multi-parameter Analyzer
13
Note:
Meter has power management technology. In order to reduce power consumption, prolong
the life of battery, it is not necessary to select the parameter which will not be measured.
For example, if you only need to measure pH, you can select pH parameter only.
If you use continuous measurement mode, the power is always on and the power
consumption is the biggest.
If you use timed measurement mode and balance measurement mode, when meter finishes
one measurement, it will turn off the power of this mode automatically, therefore the
power consumption is less.
So we suggest you to use timed measurement mode and balance measurement mode for
saving power.
Press ‘START’(F1) (or ‘MENU’ key) and then press ‘ENTER’ key to setup measurement mode
which is shown as the following chart:
On left side are measurement parameters including pH, pX,
COND, TDS, SALI, DO, SATU and CONC.
On right side are measurement modes including
Continuous Mode, Timed Reading and Balance Mode.
When selected parameter is ion concentration, measurement mode would be changed to
concentration measurement mode respectively which includes Direct Reading, STD Addition,
Sample Addition and GRAN Method, etc...
‘√’ means selected measurement parameter or measurement mode, reversed display stands for the
position of cursor.
Press ‘↑↓’、’←→’ to move cursor and when cursor moved to needed position, press ‘SELECT’ (or
‘CLEAR’) key to select or cancel the item. Meter supports mostly 3 main parameters, when you
finish selection, press ‘ENTER’ key, meter will automatically save all present setting and return to
starting state. Or you can press ‘CANCEL’ key to quit the setting and return to starting state.
Following chart is the normal measurement chart relative to selected measurement parameter and
measurement mode.
The actual display will vary from the amount of main
measurement parameter. Each measurement mode has one
measurement window with name of measurement parameter
and measurement value of parameter on it.

INE-DZB-712 Portable Multi-parameter Analyzer
14
For easy use, meter has one special function, i.e. under
measurement mode, press ‘MODE’, the display of first window
will reversed display which means to select the first window.
At the same time pressing button displays ‘WINDOW’,
‘SELECT’ and ‘PARA’ which is shown as the left chart :
Press ‘SELECT’(F2) repeatedly you can select different windows in sequence. Press
‘WINDOW’(F1), you can switch selected window to first window. Press ‘PARA’(F3), you can
view the other parameter under present mode.
For example, current measurement window is conductive measurement mode, press ‘PARA’(F3)
repeatedly, meter will switch between TDS, salinity, conductivity, resistivity and conductivity
(this method is not suitable for ion measurement mode). When view finishes without a keypress
for several seconds, meter will quit from the view state automatically.
a) Continuous Measurement Mode(Continuous Mode)
It is the most normal measurement mode, when you start measurement, meter will measure,
calculate continuously and display measurement result. During measurement, user could view
measurement parameter, calibrate electrode, store or print measurement result. When
measurement finishes, you can press ‘CANCEL’ key, then press ‘ENTER’ key to exit the
measurement mode.
b) Timed Measurement Mode(Timed Reading)
It is particularly setup for easy use.
For example, if you need to measure conductive data continuously in 30 minutes, you can select
Timed Reading. When measurement starts, meter will automatically measure, calculate and
display measurement result till specified time interval and then to save the measurement data
automatically (if USB interface is connected with computer, meter will print automatically) and
start next measurement.
Press ‘CANCEL’ key, and then press ‘ENTER’ key to exit from Timed Reading.
If you select Timed Reading, you need to set interval time again, the default settings is 10 minutes.
c) Balance Measurement Mode(Balance Mode)
It is another measurement mode. Firstly setup balance condition (please refer to ‘setup balance
condition’ chapter for detailed operation).
When measurement starts, meter will automatically measure, calculate and display measurement
result. As soon as the measurement meets the set balance condition, measurement finishes.

INE-DZB-712 Portable Multi-parameter Analyzer
15
During measurement, user could view measurement parameter,
calibrate electrode etc… When measurement finishes, user
could store, print measured result and press ‘CANCEL’ key to
exit the measurement mode or to start next measurement by
pressing ‘CONTIN’.
4.5.2. Set Ion Mode
It is designed mainly for easy use. Meter provides about 10 general kinds of ion mode in
correspondence with different ion measurements and you could select relevant ion mode to make
concentration measurement. When concentration measurement finishes, you could view current
ion concentration value according to different ion concentration unit.
Press ‘START’(F1), select ‘Set Ion Mode’ and then press
‘ENTER’ key to enter into ‘Set Ion Mode’ which is shown as
the left chart:
Meter divides ion into two parts, normal ion and custom ion. Meter provides some general ion
modes. They are: H+, Ag+, Na+, K+, NH4+, Cl-, F-, NO3-, BF4-, CN-and Cu2+, Pb2+, Ca2+. (Because
H+is always allowed, it is not displayed in ‘Set Ion Mode’). In the middle of the screen is the
name and molecular weight of currently selected ion.
Press ’←→’, ‘↑ ↓’ and move cursor to needed position. Press ‘ENTER’ key, meter will take
current selected ion as actual measurement ion mode, press ‘CANCEL’ key to quit ‘Set Ion Mode’
and return to starting state.
You can setup your own ion mode when you have relevant ion selective electrode. You could also
measure ion concentration according to normal operating procedure of ion mode.
Press ‘CREATE’ to create a new ion mode which shown as following chart:
The name of custom ion will be distributed by system
automatically. Meter mostly supports 10 custom mode –
Cus00 ~ Cus09.
You can separately setup valences and molecular weight
(mol.wt) according to normal condition. When setting finish,
just press ‘ENTER’ key.

INE-DZB-712 Portable Multi-parameter Analyzer
16
Press ‘CUSTOM’ and select ‘Create New Mode’, ‘Delete Ion Mode’ or ‘Amend Ion Mode’ to
custom ion mode.
You can only start concentration measurement when you select correct ion mode. If you select
different ion mode, it will cause incorrect measurement result.
For example, if you want to measure concentration of sodium ion, then you should select ‘Na+’
ion mode in ‘Set Ion Mode’ and start to measure concentration of sodium ion.
4.5.3. Set System Time(Date & Time)
Press ‘START’, select ‘Date & Time’ and press ‘ENTER’ key. Meter enters into setup ‘Set System
Time’ mode. You can set present system time.
On the upper side of the window is present time and
date
At the bottom is the corresponding time button
including ‘year’, ‘month’, ‘day’, ‘hour’, ‘minute’,
‘second’. It is displayed as follows:
If you want to amend time, you can press ‘EDIT’, press ‘↑ ↓’, ‘←→’ and move cursor to the item
which is needed to be amend, then press ‘EDIT’ and input time figure.
For example, if you want to set present month, you can operate as follows:
Press ‘↑ ↓’, ‘←→’ and move the cursor to ‘Month’ item,
Press ‘EDIT’ again, meter pop up input window, you can input the month. When input
finishes, press ‘ENTER’ key to quit the input window.
Your can setup other time according to the same procedure.
When all time items are amended, you can press ‘ENTER’ key to finish and press ‘CANCEL’ key
to quit ‘Set System Time’ mode and return to starting state.
4.5.4. Set Manual Temperature
When temperature sensor socket is connected with temperature sensor, meter will automatically
set the temperature value. Otherwise, current temperature value is set by user.
Press ‘START’(F1), select ‘Manual Temp’ and press
‘ENTER’ key, meter enters into ‘Manual Temperature’ mode.
Press ‘EDIT’(F3) to amend temperature value. You can input
temperature value according to actual need manually.

INE-DZB-712 Portable Multi-parameter Analyzer
17
4.5.5. Set Balance Condition(Set Condition)
Balance measurement condition is in correspondence to meter’s balance measurement mode to set
the balance condition of each measurement parameter. As shown in the following chart:
The balance condition is 0.010pX, when variation of pX
(including pH) measurement value is smaller than 0.010pX,
the measurement is valid.
If you select balance measurement mode to measure, when all measurements result in set balance
time are in line with balance condition, the measurement finishes.
Balance time is only valid in balance measurement mode and the unit is second (s), range is 1 ~
200 seconds.
4.5.6. System Setup
This function includes GLP regular, automatic Shut-off and backlight time setting etc…
Press ‘START’(F1), select ‘System Setup’ mode,
press ‘ENTER’ key to enter into system setting mode.
Press ‘↑ ↓’, ‘←→’ and move the cursor to relevant
item and amend corresponding parameter. When
amendment finishes, press ‘CANCEL’ key to quit,
then return to starting state.
Cali Interval: The meter will remind user the time interval of calibrating electrode. Meter will
automatically calculate the time from previous calibration till now. In case previous calibration
time exceeds the time interval setup by user, meter will pop up a reminding window to remind
user take care and re-calibrate electrode. The unit of electrode calibration interval is hour. The
displayed pH electrode calibration interval is 4 hours.
Operator: The operator’s number is a three digit number, the range is between 000 ~ 200, all
operation records contain operator’s number.
Auto Del: Automatic delete stored data function. When stored data reaches the amount that the
meter allows, whether you agree to cover or repeat the storage.
For example, the permitted stored pH measurement data is 200 sets, if you want to store number
201 data, in case automatic delete stored data function is opened, meter will store the number 201
data in first position, that means meter will store data from the beginning, otherwise meter will
give up storing current data. Please pay special attention on it.

INE-DZB-712 Portable Multi-parameter Analyzer
18
GLP Mode: It means meter has two modes, i.e. either select supporting GLP or do not select
supporting GLP. There will be different pattern in view and print stored data under these two
modes.
4.5.7. Set LCD Contrast(LCD Contrast)
You can adjust LCD contrast in certain range. If you find the display is not satisfied, you can
adjust the contrast to improve.
4.6. View Function
For easy use, meter allows user to view current measurement parameter at random including
previous calibrating data and current using parameter, allows user to edit measurement parameter
directly. Meter also allows view stored data.
In starting state, press ‘START’(F1), select relevant item to view, edit measurement parameter and
view stored data.
4.6.1. View pH Measurement Parameter(View pH Para)
Under this function, user could view current pH calibration data. In starting state, press
‘START’(F1), and press F3 to move cursor at “PARA”, then select ‘View pH Para’ and press
‘ENTER’ key to enter into view pH measurement parameter mode.
On top of the screen are the last calibration data
including calibration time (Last Cali), amount of
calibration solution and calibration data in
correspondence to each standard buffer solution.
At the bottom is the condition of STD group.
If last calibration is multi-points calibration, user can press ‘←→’ to show detailed data of each
STD point.
Here, user could re-calibrate electrode slope (please refer to calibration chapter for detailed
calibration procedure), print calibration data and set new STD group.

INE-DZB-712 Portable Multi-parameter Analyzer
19
Press ‘CANCEL’ key to exit View pH Stored.
If you want to print current calibration data, you could connect USB connecting line (equipped
with meter) with computer and press ‘PRINT’ to print out calibration data.
Set pH STD Group
Meter has automatic distinguishing function, can distinguish 10 standard buffer solutions. You
can make multi-points calibration but mostly not exceeds 5 points. Because pH range of 10
standard buffer solutions maybe duplicated, in order to ensure the precision of measurement
result, user needs to establish relevant STD group.
For example, if you want to use 4.003pH, 9.182pH STD to calibrate electrode slope, you can set
STD group as 4.003pH and 9.182pH. In normal, meter can automatically distinguish these two
standard buffer solutions.
Press “START”(F1) and then press F3 key to “PARA”, then press “ENTER” key in “View pH Para”
Press ‘GROUP’(F2) to enter into current STD group, displayed as following chart.
It displays current STD group is group 1. System provides total
3 kinds of STD group which is Group 1, Group 2 and custom
group(Custom).
In which:
STD group 1 includes 4.003pH、6.864pH、9.182pH buffer solution.
STD group 2 includes 3.776pH、7.000pH、10.012pH buffer solution.
Custom allows you select by yourself but mostly 5 buffer solution.
You can switch the STD group by pressing ‘←→’ (F1) and press ‘SELECT’(F3) to select
necessary STD group.
You can also set your own STD group. Move arrow icon(F1) to custom group(Custom), press
‘SETUP’(F2) to set self-defining STD group which is displayed as the following chart.
In the window, there are 10 figures in correspondence to 10
standard buffer solutions in ‘Set Custom Group’ window.
These 10 standard buffer solutions are 1.679pH, 3.557pH,
3.776pH, 4.003pH, 6.864pH, 7.000pH, 7.413pH, 9.182pH,
10.012pH and 12.454pH. Under the figure is standard pH
value of STD at 25.0℃.