DKK-TOA MBM-162 User manual

Please keep this instruction manual close at hand of the persons who are in charge of
the operation of this product.
Before operating this product, please read this instruction manual carefully for its
correct handling.
ELECTRODELESS
CONCENTRATION ANALYZER
MODEL MBM-162
No. MBM-IB47003-1E

Model: MBM-162 Introduction
- 1 -
Introduction
(a)Thank you for your purchase of our product. The Model: MBM-162 Electrodeless Conentration
Analyzer (hereafter called the analyzer or the product) is an indicating analyzer in a measurement
system that measures the electrical conductivity of a solution continuously and converts the
measured value into concentration and displays/outputs it.
Sensor
Analyzer
Model MBM-162
Recorder etc.
Example of a Measurement System
(b)If this product is equipped with an RS-232C connector (option), by using an application program
(option), the following can be performed from the screen of a personal computer. For details, refer
to the instruction manual of the application program.
•Include digital measured value data (concentration, temperature and conductivity) to the personal
computer.
•Change the concentration conversion data stored in the analyzer (using an optional dedicated
software).
(c)In this product, concentration conversion data (linear approximate expression) is pre-input
according to the ordered specification. The concentration conversion data indicates the relationship
between concentration, temperature and conductivity. For the standard specifications, the
concentration conversion data is based on the International Critical Table (I.C.T) and DKK-TOA
analysis data.
(d)The entire concentration measuring range is 0.00 to 99.99% (it may be 0.000 to 4.000% depending
on the setting). However, the concentration measuring range of each product depends on the preset
concentration conversion data. In accordance with the preset concentration conversion data, one of
the following conductivity measuring ranges is automatically selected.
0.000 to 2.100/ 0.00 to 7.00/ 0.00 to 21.00/ 0.0 to 70.0/ 0.0 to 210.0/ 0 to 700/ 0 to 2100mS/cm
(at 25°C)
The transmission output range can be set arbitrarily on the basis of the range of the concentration
conversion data.
(e)This product can be combined with a sensor whose reference cell constant (designed cell constant)
is 9.00 or 2.60/cm (depending on the ordered specification). Sensors with other reference cell
constants cannot be combined. The power supply is 90 to 264VAC, 50/60Hz and the transmission
output is 4 to 20mADC, isolated from ground. For alarm output, 2 circuits are provided. For other
specifications, refer to 6.1 “Standard Specifications”.
(f) There is a possibility that the product indicates or outputs an erroneous measured value by the
following causes. Prepare a backup system so that no damage occurs to the related facilities even
in the case like these.

Model: MBM-162 Introduction
- 2 -
•Any problem of the product such as deterioration or damage of the detecting section or
inappropriate insulation of cables.
•Improper setting of operating conditions or calibration operation.
•Electrical interference such as noise in the vicinity or improper grounding.
•Other unpredictable phenomena
(g)Since important items are described in “Safety Information,” read the contents carefully.
(h)The product should be handled by persons who have received proper training. In addition, for
technical services such as repairs, ask a specialist to do who is qualified for the technical
certification system in our company or a person who has technical skills equivalent to that
certification system.

Model: MBM-162 Safety Information
- 3 -
Safety Information
(1) Meaning of markings
Meaning of symbols such as the ones used in notations of warning in the instruction manual is
described below. In addition, the alert symbol ( : General caution symbol) used on a product label,
etc. is meant to notify the existence of hazard/loss and it also means “Refer to the Instruction
Manual.”
:
Indicates the degree of hazard which can lead to death or serious injury if you fail to operate the
product properly.
Serious injury means an injury such as loss of sight, burns (high temperature or low temperature),
electric shock, bone fracture and poisoning, and the aftereffects of the injury remains or the injury
requires hospitalization or long periods of outpatient treatment.
:
Indicates the degree of hazard/loss which can result in minor injury or property damage if you fail to
operate the product properly.
Minor injury means an injury not requiring hospitalization or long periods of outpatient treatment.
Property damage refers to damage that affects property around the product such as equipment and
buildings (wide-ranging damage).
【IMPORTANT】:Indicates im
p
ortant matters such as to prevent damage to the product main body,
prevent data destruction, prevent wasting time, and maintain performance.
〔NOTE〕 :Indicates comments, reasons, background information, a case example and other
items to help the reader understand the meaning.
:Indicates reference items.
①, ②, ③:Indicates item numbers such as the ones used in operations.
(2) Safety compliance items
Hazardous Gasses
Do no use the product in an area where explosive gas, flammable gas exists. Using
the product in any of these areas can cause explosion or fire.
Electric Shock
Do not touch the terminals in the analyzer while power is applied. Touching the
terminals may cause electric shock.
The ground terminal must be grounded. If the terminal is not grounded and a problem
occurs in the power supply system, electric shock may result.

Model: MBM-162 Safety Information
- 4 -
Disassembly and Modification
Do not disassemble or modify the sections of the product that are not described in
the instruction manual. The product can be damaged.
Warning Label Lost
If any warning label affixed to this product becomes too difficult to read or lost,
please order a new one through your local sales agent or our sales office and affix it
to its original position.
Disposal
In case you dispose of this product or any part of this product, handle it as industrial
waste as specified by law.
(3) Notes on use of the instruction manual
Important items such as “Safety compliance items” are described in this manual. Handle the manual
as follows:
(a)The instruction manual is required not only at the start of operation but also required when
maintenance is performed or in case a failure occurs. Please keep the manual at hand all the time so
that the operator who actually operates the product can read the manual at any time.
(b)If the manual is lost or too smeared to read, please order a new copy through your local sales agent
or directly from our sales office.
(c)Some of the diagrams used in the manual or on product labels may be modified with part of their
shapes or displays omitted or they may be described in abstract form. In addition, numbers etc.
shown on the screen example are just examples for such cases.
(d)The contents of the manual may be changed without prior notice for reasons such as to improve
performance.
(e)Intellectual property right of the manual belongs to DKK-TOA. All or part of the manual must not
be reproduced without permission.

Model: MBM-162 Product Warranty
- 5 -
Product Warranty
(1) Warranty Coverage
DKK-TOA Corporation (DKK-TOA) warrants its products against defective material or workmanship for the warranty
period.
(a) The warranty period is one year from the date of delivery to the original user. If the date of delivery cannot be
specified, the warranty period is 24 months from the month following the date of manufacture shown on the product
nameplate.
(b) Specific written agreements with DKK-TOA, if any, shall take precedence over this warranty.
(c) The limitation of warranty described herein may not apply where applicable laws do not allow such limitation.
(2) Limited Warranty
This warranty does not cover the cases listed below.
(a) Direct or indirect failure or damage caused by the use of the product for a purpose or in a manner not prescribed by
the specifications or the instruction manual for the product.
(b) Direct or indirect failure or damage caused by force majeure, including but not limited to an act of God, natural
disaster such as earthquake, storm and flood damage, and lightning, fire, accident, abnormal voltage, salt damage,
gas damage, labor unrest, acts of war (declared or undeclared), terrorism, .civil strife, or acts of any governmental
jurisdiction.
(c) Failure or damage caused by any repair or modification not authorized by DKK-TOA.
(d) Failure or damage caused by the transport, moving, or dropping of the product after the purchase that is not
attributable to DKK-TOA.
(e) Electrodes and consumables (The warranty period for each part has priority when the period is shorter than that for
the main unit of the product. If the customer requires any part after more than six months from the date of manufacture,
consult DKK-TOA or its distributor.)
(f) Failure or damage caused by the use of consumables, parts, or software not supplied by DKK-TOA.
(g) Malfunctions or damage caused by the use of connecting equipment not supplied by DKK-TOA
(h) Loss of data, settings, programs, or software stored on the product not attributable to DKK-TOA.
(i) Any product other than DKK-TOA’s, if specified by the purchaser or user, that incorporates, or is incorporated into or
combined with DKK-TOA’s products (*1). In such cases, this warranty covers DKK-TOA’s products only.
(j) Any product not under proper maintenance in accordance with the instruction manual furnished by DKK-TOA.
(k) Products without a nameplate (excluding products proved to have been delivered by DKK-TOA).
EXCEPT AS EXPRESSLY SET FORTH IN THE PRECEDING SENTENCES, DKK-TOA MAKES NO WARRANTY OF
ANY KIND WHATSOEVER WITH RESPECT TO ANY PRODUCT. DKK-TOA EXPRESSLY DISCLAIMS ANY
WARANTY IMPLIED BY LAW, INCLUDING BUT NOT LIMITED TO ANY WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE.
LIMITATION OF REMEDIES: In the event that a defect is discovered within the warranty period, DKK-TOA or its
authorized distributor will, at its option, repair or replace the defective product or its part, or will refund the purchase price
of the product. THIS IS THE EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY.
LIMITATION OF DAMAGES: IN NO EVENT SHALL DKK-TOA BE LIABLE FOR ANY INCIDENTAL OR
CONSEQUENTIAL DAMAGES OF ANY KIND FOR BREACH OF ANY WARRANTY, NEGLIGENCE, ON THE BASIS OF
STRICT LIABILITY, OR OTHERWISE.
(3) Others
(a) Maintenance parts (*2) for product will normally be supplied for five years (*3) from the date manufacturing and sales
are discontinued.
(b) The cause of any malfunction or damage shall be determined by a DKK-TOA technician.
(c) For repairs, contact a local distributor in your country or state.
*1: Warranties for products from other companies must be maintained by the user.
*2: Maintenance parts refers to parts that are required to maintain operation of the product.
*3: This five-year period is subject to availability of parts or their replacement.

Model: MBM-162 Reading Guide
- 6 -
Reading Guide
Refer to the necessary sections of this instruction manual depending on your purposes such as
understanding the outline of this product or starting the product as shown below. The numbers in
circles indicate sections to be referred to in sequential order.
Purpose
Section
Introduction
Safety Information
1. Control Panel
Functions
2. Operation
3. Modes of
Operations
5. Troubleshooting
6. Specifications and
Operational
Explanation
4. Maintenance
7. Installation
Perform
respective
operations
Maintenance
and inspection,
and
troubleshooting
Understand
the outline of
this product
Check
installation,
piping and
wiring
Start
(start-up)

Model: MBM-162 Table of Contents
- 7 -
Table of Contents
●Introduction················································································································1
●Safety Information·······························································································3
(1) Meaning of markings ⋅⋅⋅⋅ 3
(2) Safety compliance items ⋅⋅⋅⋅ 3
(3) Notes on use of the instruction manual ⋅⋅⋅⋅ 4
●Product Warranty·································································································5
●Reading Guide ·······································································································6
1. Control Panel Functions··········································································10
(1) Names of main components ⋅⋅⋅⋅ 10
(2) Functions of keys and indictors ⋅⋅⋅⋅ 11
(3) Main sensors ⋅⋅⋅⋅ 13
2. Operation ··············································································································15
2.1 Operation Start Procedure·····················································································15
2.2 Stopping the Operation··························································································18
3. Modes of Operations··················································································19
3.1 Modes and Operation Screen Map ·······································································19
(1) Mode Switching ⋅⋅⋅⋅ 19
(2) Operation screen map ⋅⋅⋅⋅ 21
3.2 Measurement Mode Operation··············································································23
(1) Measured value screen selection ⋅⋅⋅⋅ 23
(2) Checking the alarm ⋅⋅⋅⋅ 24
(3) Checking the transmission output range and hold setting ⋅⋅⋅⋅ 26
(4) Checking the proper cell constant ⋅⋅⋅⋅ 27
(5) Checking the concentration conversion data ⋅⋅⋅⋅ 28
3.3 Setting Mode Operation·························································································30
(1) Changing the concentration compensation ⋅⋅⋅⋅ 30
(2) Changing the temperature shift ⋅⋅⋅⋅ 31
(3) Changing the alarm setting ⋅⋅⋅⋅ 32
(4) Changing the concentration transmission output range ⋅⋅⋅⋅ 35
(5) Changing the temperature transmission output range ⋅⋅⋅⋅ 36
(6) Changing the hold setting ⋅⋅⋅⋅ 37
(7) Changing the proper cell constant ⋅⋅⋅⋅ 38
(8) Changing the temperature slope ⋅⋅⋅⋅ 39
(9) Changing the measurement mode auto return ⋅⋅⋅⋅ 40
3.4 Transmission adjustment Mode Operation···························································42

Model: MBM-162 Table of Contents
- 8 -
(1) Adjustment of concentration transmission output ⋅⋅⋅⋅ 42
(2) Adjustment of temperature transmission output ⋅⋅⋅⋅ 43
4. Maintenance·······································································································44
4.1 Maintenance List ····································································································44
4.2 Washing the Sensor·······························································································45
4.3 Inspection of Temperature Element ······································································46
4.4 Adjustment Using a Solution of Known Concentration········································48
5. Troubleshooting·······························································································49
5.1 Error Messages······································································································49
5.2 Troubleshooting ·····································································································50
(1) No indication or indication does not change ⋅⋅⋅⋅ 50
(2) Concentration value is off the scale ⋅⋅⋅⋅ 51
(3) Fluctuation of conductivity value ⋅⋅⋅⋅ 52
(4) A large deviation of concentration measured value ⋅⋅⋅⋅ 52
(5) Temperature measured value is off the scale ⋅⋅⋅⋅ 53
(6) Temperature measured value is below the minimum indication value ⋅⋅⋅⋅ 53
5.3 Checking the Analyzer Operation with Equivalent Input ·····································54
5.4 Measures against Noise ························································································57
(1) Error symptom due to noise ⋅⋅⋅⋅ 57
(2) Noise source ⋅⋅⋅⋅ 57
(3) Protective measures using a surge absorber ⋅⋅⋅⋅ 57
6. Specifications and Operational Explanation························58
6.1 Standard Specifications ·························································································58
(1) Analyzer specifications ⋅⋅⋅⋅ 58
(2) Specifications of main sensors ⋅⋅⋅⋅ 60
6.2 Principle of Operation ····························································································62
(1) Principle of sensor ⋅⋅⋅⋅ 62
(2) Analyzer operation ⋅⋅⋅⋅ 62
7. RS-232C Communication Function (Option)································64
(1) Outline and specifications ⋅⋅⋅⋅ 64
(2) Terminal arrangement and communication cable ⋅⋅⋅⋅ 64
(3) Wiring ⋅⋅⋅⋅ 65
(4) Command format ⋅⋅⋅⋅ 65
8. Installation············································································································67
8.1 Analyzer Mounting ·································································································67
(1) Installation location ⋅⋅⋅⋅ 67
(2) Examples of analyzer installation ⋅⋅⋅⋅ 67
8.2 Sensor Mounting ····································································································70
(1) Key points of sensor mounting ⋅⋅⋅⋅ 70

Model: MBM-162 Table of Contents
- 9 -
(2) Examples of sensor installation ⋅⋅⋅⋅71
(3) Adjustment of proper cell constant when shielding exists ⋅⋅⋅⋅ 72
8.3 Wire Connection·····································································································73
(1) Connection diagram ⋅⋅⋅⋅ 73
(2) Cable ports ⋅⋅⋅⋅ 74
(3) External input/output terminals ⋅⋅⋅⋅ 75
(4) Sensor cable input terminals ⋅⋅⋅⋅ 76
(5) Concentration transmission output terminals ⋅⋅⋅⋅ 77
(6) Temperature transmission output terminals ⋅⋅⋅⋅ 77
(7) Power input terminals ⋅⋅⋅⋅ 77
(8) Ground terminal ⋅⋅⋅⋅ 77
(9) Alarm output terminals ⋅⋅⋅⋅ 78
(10) Power-off output terminals (option)⋅⋅⋅⋅ 79
(Last page ⋅⋅⋅⋅ 79)

Model: MBM-162 1. Control Panel Functions
- 10 -
1. Control Panel Functions
(1) Names of main components
Control panel
Display panel
STAND-BY key
Enter key
DISP key
ALARM key
OUT key
Range key
Up key
Down key
DATA key
Names of Main Components

Model: MBM-162 1. Control Panel Functions
- 11 -
(2) Functions of keys and indictors
Functions of Keys
Operation key
(notation in the text) Function
Stand-by key
( )
•Pressing this key longer (3 seconds or more) in the measurement mode
changes the screen to the “Setting Mode Concentration Measured Value”
screen (the initial screen of the setting mode).
•Pressing this key longer (3 seconds or more) in the setting mode returns the
screen to the “Concentration Measured Value” screen (the initial screen of the
measurement mode).
Enter key
( )
•Pressing this key in the setting mode or in the transmission adjustment mode
switches the screen. Confirms the entered number or symbol and, at the same
time, switches the screen to the next screen.
•Pressing and together longer switches the key lock function on and
off (valid and invalid). If the key lock function is valid, keys other
than and are not accepted.
DISP key
( )
•Pressing this key in the measured value screen group enables the screens in
this group to be switched.
•Pressing this key in the “Setting Mode Concentration Measured Value” screen
longer, the “Concentration Compensation On/Off” screen, the initial screen of
the compensation screen group, appears.
Alarm key
( )
•Pressing this key in the measured value screen group causes the screen to go
to the alarm display screen group. If this key is pressed repeatedly, the screen
switches to another one in the group and finally returns to the “Concentration
Measured Value” screen.
•Pressing this key longer when “Setting Mode Concentration Measured Value”
screen is displayed, “Alarm 1 On/Off” screen, the initial screen of the alarm
screen group, appears.
OUT key
( )
•Pressing this key longer in the measurement mode causes the analyzer to
enter the transmission adjustment mode. Pressing this key longer in the
transmission adjustment mode returns the screen to the “Concentration
Measured Value” screen.
•Pressing this key in the measured value screen group causes the screen to go
to the transmission range, etc. display screen group. If this key is pressed
repeatedly, the screen switches to another one in the group and finally returns
to the “Concentration Measured Value” screen.
•Pressing this key longer when “Setting Mode Concentration Measured Value”
screen is displayed, “Concentration Transmission Range 4mA Value” screen,
the initial screen of the transmission range, etc. screen group, appears.
Range key
( )
•Pressing this key in the measured value screen group causes the screen to go
to the proper cell constant, etc. display screen group. If this key is pressed
repeatedly, the screens of this group open sequentially and finally the screen
returns to the “Concentration Measured Value” screen.
•Pressing this key longer in the “Setting Mode Concentration Measured Value”
screen brings up the “Proper Cell Constant (C.CON)” screen, the initial
screen of the of the proper cell constant, etc. screen group.
Up key
( )
•Pressing this key in the setting mode or in the transmission adjustment mode
increases the setting number or switches the setting symbol.
•Pressing and together longer switches the key lock function on and
off (valid and invalid). If the key lock function is valid, keys other
than and are not accepted.
Down key
( )
•Pressing this key in the setting mode or in the transmission adjustment mode
decreases the setting number or switches the setting symbol.
(To be continued)

Model: MBM-162 1. Control Panel Functions
- 12 -
(Continued from previous page)
Operation key
(notation in the text) Function
DATA key
( )
•Pressing this key in the measured value screen group causes the screen to go
to the concentration conversion data, etc. display screen group. If this key is
pressed repeatedly, the screen switches to another one in the group and finally
returns to the “Concentration Measured Value” screen.
•Pressing this key longer in the “Setting Mode Concentration Measured Value”
screen brings up the “Measurement Mode Auto Return (M.RET)” screen, the
initial screen of the other screen group.
•Pressing this key in the setting mode or in the transmission adjustment mode
moves the digit of the number for setting to the right.
STAND-BY indicator
CAL indicator
RANGE indicator
OUT indicator
ALARM indicator
Main display (when all lights are lit)
Temperature indictor
Cell constant unit indicator
Sub display
Unit mark
(for the main display)
Unit mark
(for the sub display)
Display Panel
Functions of indictors
Functions of indictors Function
Main display
•Displays mainly the measured value in the measurement mode.
•Displays setting values, selection items, etc. in the setting mode and in
the transmission adjustment mode.
Sub display
•Displays mainly the temperature in the measurement mode.
•Displays setting values, selection items, etc. in the setting mode and in
the transmission adjustment mode.
STAND-BY indictor
ST-BY
•When this indicator is lit, the mode is in the setting mode or in the
transmission adjustment mode.
•When this indicator blinks, the analyzer is in the state to change
settings.
CAL indictor
CAL
•Indicates that the analyzer is in the transmission adjustment mode.
RANGE indictor
RANGE
•Indicates that the main display shows the selected measuring range.
OUT indicator
OUT1
OUT2
•OUT1 indicates that the screen is related to the concentration
transmission output.
•OUT2 indicates that the screen is related to the temperature
transmission output.
(To be continued)

Model: MBM-162 1. Control Panel Functions
- 13 -
(Continued from previous page)
Functions of indictors Function
ALARM indictor
ALARM1
ALARM 2
•Indicates that the screen is related to the alarm output.
•ALARM1 indicates that Alarm 1 has occurred and ALARM2 indicates
that Alarm 2 has occurred.
Temperature indicator
°C
•Indicates the unit for the value on the main display or sub display.
Cell constant unit indicator
/cm
•Indicates whether the unit for the value displayed is centimeter unit or
meter unit cell constant.
Unit mark
•“%” or “mS/cm”. indicates the unit of the numeric value currently
shown on the main display.
•“(%)” indicates the unit of the numeric value currently shown on the
sub display.
Key lock mark
•Indicates that the key lock function is valid.
〔NOTE〕•For mode and screen group, refer to 3.1(1) “Mode switching.”
•For screen configuration and switching, refer to 3.1(2) “Operation screen map.”
(3) Main sensors
Sensor is selected according to the ordered specification. The shapes of main sensors are shown below.
The reference cell constant is 9.00/cm or 2.6/cm.
Screw-in method
Model ME-111
Flange method
Model ME-121
Sensor with case
Model ME-141
ME-1□1 Series Sensors (Reference cell constant: 9.00/cm)

Model: MBM-162 1. Control Panel Functions
- 14 -
Screw-in method
Model ME-11T-1-O
Flange method
Model ME-11T-1-D
Sensor with case
Model ME-11T-1-H
ME-11T Series Sensors (Reference cell constant: 2.60/cm)

Model: MBM-162 2.1 Operation Start Procedure
- 15 -
2. Operation
2.1 Operation Start Procedure
Operate the analyzer in the procedure below. The measuring system including the analyzer becomes
ready to operate in normal operating conditions.
①Check the installation. ⋅⋅⋅⋅⋅⋅ Check that the necessary installation work described in 7.
“Installation” (mounting and wiring) is completed.
②Install the sensor. ⋅⋅⋅⋅⋅⋅ Check that the sensor is mounted properly. ( Check the procedure in
7.2 “Sensor Mounting” and make sure that the liquid contacting section of the sensor is immersed
in a sample solution.
③Turn on power supply. ⋅⋅⋅⋅⋅⋅ Make sure the power to be supplied to the analyzer is 90 to 264VAC
and turn on power at the power source side and then open the door of the analyzer and turn on the
power switch. Close the door in the same manner.
Electric Shock
Do not touch the terminal plate in the analyzer while power is applied. Touching the
terminal plate may cause electric shock.
【IMPORTANT】•Power voltage is 90 to 264VAC. Supplying voltage higher than this range
may damage the analyzer.
•Power switch is installed facing a little downward. When you turn on or off
the switch, make sure that the switch is actually turned on or off.
On
Off
Screw
Door
Terminal cover
Power switch
Power Switch of the Analyzer
④Check the display and indicators. ⋅⋅⋅⋅⋅⋅ Confirm that the “Concentration Measured Value” screen,
the initial screen of the measurement mode, appears and the concentration measured value is shown
on the main display. The standby indicator (ST-BY) is unlit.
〔NOTE〕•If the concentration compensation and temperature shift is on (valid), the offset is shown
on the sub display.

Model: MBM-162 2.1 Operation Start Procedure
- 16 -
Example of Concentration Measured Value Screen
⑤Go to the transmission output range, etc. display screen group. ⋅⋅⋅⋅⋅⋅ Press while a
screen of the measured value screen group is displayed.
•The “Concentration Transmission 4mA Value Display (4mA)” screen of the transmission range,
etc. display screen group appears.
Concentration Transmission 4mA Concentration Transmission 20mA
Value Display Screen Value Display Screen
⑥Check the concentration transmission output range.
Check the 4mA value. ⋅⋅⋅⋅⋅⋅ Check that the value on the main display of “Concentration
Transmission 4mA Value Display (4mA)” screen shows the necessary concentration value (%)
that corresponds to 4mA value.
Check the 20mA value. ⋅⋅⋅⋅⋅⋅ Press once and check that the value on the main display of
“Concentration Transmission 20mA Value Display (20mA)” screen shows the necessary
concentration value (%) that corresponds to 20mA value. Check that the transmission output
range is appropriate for the conductivity of sample liquid for 20mA value as well as 4mA value.
•Normally, the concentration transmission output range is set as factory setting value
according to the ordered specification. However, this range can be changed.
3.3(4) “Changing the concentration transmission output range”
⑦Check the temperature transmission output range.
Check the 4mA value. ⋅⋅⋅⋅⋅⋅ Press once and check that the value on the main display of
“Temperature Transmission 4mA Value (4mA) Display” screen shows the necessary temperature
value that corresponds to 4mA value.
Temperature Transmission 4mA Temperature Transmission 20mA
Value display Screen Value display Screen
Check the 20mA value. ⋅⋅⋅⋅⋅⋅ Press once and check that the value on the main display of
“Temperature Transmission 20mA Value (20mA) Display” screen shows the necessary
temperature value that corresponds to 4mA value. Check that the transmission output range is
appropriate for the temperature of sample liquid for 20mA value as well as 4mA value.
•The temperature transmission output range is set as factory setting value as shown in the table
“Measurement Mode Check Screens and Factory Setting Values” in Step ⑨. However, this
range can be changed. 3.3(5) “Changing the temperature transmission output range”

Model: MBM-162 2.1 Operation Start Procedure
- 17 -
⑧Return to “Concentration Measured Value” screen. ⋅⋅⋅⋅⋅⋅ Press .
⑨Check other setting values. ⋅⋅⋅⋅⋅⋅ Check other setting values shown in the table below and change
them, if necessary. Among them, “Concentration Transmission 4mA Value display (4mA)” screen,
“Concentration Transmission 20mA Value Display (20mA)” screen, “Temperature Transmission
4mA Value Display (4mA)” screen and “Temperature Transmission 20mA Value Display (20mA)”
screen are already checked in Steps ⑥and ⑦.
Measurement Mode Check Screens and Factory Setting Values
Check screen Factory setting value Reference item
[Alarm display screen group]
•Alarm 1 Set Point Display Screen Invalid (OFF)
•Alarm 2 Set Point Display Screen Invalid (OFF)
3.2(2) “Checking the alarm”
3.3(3) “Changing the alarm
setting ”
[Transmission output range, etc. display
screen group]
•Concentration Transmission 4mA Value
Display Screen
According to the ordered
specification
•Concentration Transmission 20mA Value
Display Screen
According to the ordered
specification
•Temperature Transmission 4mA Value
Display Screen
0°C
•Temperature Transmission 20mA Value
Display Screen
50°C
•Hold Display Screen Hold
3.2(3) “Checking the
transmission output range and
Hold setting”
3.3(4) “Changing the
Concentration transmission
output range”
3.3(5) “Changing the
temperature transmission
output range”
3.3(6) “Changing the Hold
setting”
[ Proper cell constant, etc. display group ]
•Proper Cell Constant Display Screen Depends on the
combined sensor.
•Temperature Slope Display Screen
3.2(4) “Checking the proper
cell constant”
3.3(7) “Changing the proper
cell constant”
3.3(8) “Changing the
temperature slope”
[Concentration conversion data, etc. display
screen group ]
•Concentration Conversion X1T1 Display
Screen to the Concentration Conversion
X6T5 Display Screen
Depends on the ordered
specification.
3.2(5) “Checking the
concentration conversion
data”
•If the product is equipped with an
RS-232 connector (option), the
concentration conversion data
can be changed by an application
program (option) for personal
computer.
•Measurement Mode Auto Return Display
Screen
Returns automatically
(on)
3.3(9) “Changing the
measurement mode auto
return”
⑩Check the indication in the measurement mode. ⋅⋅⋅⋅⋅⋅ While “Concentration Measured Value”
screen is displayed, press repeatedly until the desired screen appears.
•Concentration Measured Value Screen
•Concentration and Compensated Value Screen (automatically returns to “Concentration Measured
Value” screen in about 20 seconds)
•Temperature Measured Value Screen

Model: MBM-162 2.2 Stopping the Operation
- 18 -
•Concentration and Temperature Measured Value Screen
•Compensation and Conductivity Screen
⑪Enable the key lock function ⋅⋅⋅⋅⋅⋅ It is recommended to enable the key lock function in advance
to prevent the setting values from being changed by mistake during setting. Pressing and
together longer (3 seconds or more) switches this function on and off (valid/invalid). When
this function is valid, all keys other than the and keys will not be accepted. If this
function is turned off, the key lock mark goes out and all keys will be accepted.
Key lock mark
Key Lock Mark Is Lit (Key Lock Function: Valid)
Now, the measurement system has returned to normal measurement state.
2.2 Stopping the Operation
(a)To stop the operation, turn off the power switch of the analyzer and turn off the power source that
supplies power to the analyzer.
(b)If it is sure that the sensor will not be damaged or no possibility of the electrode section gets dirty,
it is not necessary to remove the sensor
(c)To restart the operation, refer to 2.1 “Operation Start Procedure.” To transfer the analyzer to other
place, refer to 7, “Installation.”

Model: MBM-162 3.1 Modes and Operation Screen Map
- 19 -
3. Modes of Operations
3.1 Modes and Operation Screen Map
(1) Mode Switching
(a)The screens to check or perform settings are separated into 3 modes as shown below.
Measurement mode
Press
longer
Press longer
Press longer
Concentration Measured Value Screen
(Initial screen of measurement mode)
16.53
Setting mode
Setting Mode Concentration Measured Value Screen
(Initial screen of setting mode)
16.53
ST-BY
Press longer Concentration Transmission 4mA Adjustment Screen
(Initial screen of transmission adjustment mode)
Transmission adjustment mode
4.00
ST-BY
OUT 1
CAL
4 ｍ A
Mode Switching
(b)The mode that the current screen belongs to can be checked as shown below using the standby
indicator (ST-BY)
Indictors and the Current Mode
Standby indicator (ST-BY) CAL indicator (CAL)
Measurement mode Unlit Unlit
Setting mode Lit Unlit
Transmission adjustment mode Lit Blinks
(c)As shown in the diagram “Mode Switching,” the mode can be changed by
pressing longer (3 seconds or more) and pressing longer (3 seconds or
more).
(d)When the mode is changed, the initial screen of the changed mode appears.
(e)When the analyzer goes to the setting mode, the conductivity transmission output (terminals 70
and 71) and the temperature transmission output (terminals 72 and 73) automatically change as
follows:
•At the time of measurement mode ⋅⋅⋅⋅⋅⋅ Outputs the current conductivity measured value.
•At the time of setting mode ⋅⋅⋅⋅⋅⋅ Outputs depending on the type set by “Hold (S.OUT)” screen
•At the time of transmission adjustment mode ⋅⋅⋅⋅⋅⋅ Outputs an arbitrarily current value set by the
screen in this mode.
(f) When the analyzer is in the setting mode or in the transmission adjustment mode, alarm output
signals will be reset.