Ohaus Moisture analysers MB series Model MB 120 User guide

Instruction Manual
MB120 Moisture Analyzer

Table of Contents

1. GETTING TO KNOW YOUR MOISTURE ANALYZER ................................................................... 1

1.1 Introduction .............................................................................................................................. 1

1.2 Overview of the Moisture Analyzer ......................................................................................... 1

1.3 What is a Moisture Analyzer? ................................................................................................. 1

2. SAFETY INFORMATION ................................................................................................................. 2

2.1 Definition of Signal Warnings and Symbols .................................................................................. 2

2.2 Product Specific Safety Notes ....................................................................................................... 3

3. INSTALLATION ............................................................................................................................... 5

3.1 Unpacking and checking the standard equipment .................................................................. 5

3.2 Selecting the Location ............................................................................................................. 5

3.3 Installing the Tray Pan, Draft Shield and Pan Support .......................................................... 6

3.4 Leveling the Moisture Analyzer ............................................................................................... 6

3.5 Connecting to a Power Supply ................................................................................................ 7

3.6 Switching the Moisture Analyzer on and off ............................................................................ 7

4. MAKING A SIMPLE MEASUREMENT .......................................................................................... 10

5. MENU............................................................................................................................................. 10

6. SETUP ........................................................................................................................................... 11

6.1 Weight and temperature adjustment ..................................................................................... 11

6.1.1 Weight adjustment............................................................................................................. 11

6.1.2 Temperature adjustment ................................................................................................... 12

6.1.3 Weight adjustment record ................................................................................................. 12

6.1.4 Temperature adjustment record .......................................................................................... 15

6.2 User settings ......................................................................................................................... 15

6.2.1 Language .......................................................................................................................... 15

6.2.2 Brightness ......................................................................................................................... 16

6.2.3 Sound ................................................................................................................................ 17

6.3 Device settings ...................................................................................................................... 18

6.3.1 Date and Time ................................................................................................................... 18

6.3.2 Peripherals ........................................................................................................................ 19

6.3.3 Print ................................................................................................................................... 21

6.3.4 GLP and GMP Data .......................................................................................................... 22

6.4 User management ................................................................................................................. 23

6.5 System and data management ............................................................................................. 26

7. METHOD LIBRARY ....................................................................................................................... 31

7.1 Method load, edit and delete. ................................................................................................ 31

7.2 Entering Method Name ......................................................................................................... 31

7.3 Setting the Drying Profile ...................................................................................................... 32

EN-2 MB120

7.4 Setting the Drying Temperature ............................................................................................ 33

7.5 Selecting the switch-off criterion ........................................................................................... 33

7.6 Displayed result ..................................................................................................................... 35

7.7 Target Weight ........................................................................................................................ 36

7.8 Starting Mode ........................................................................................................................ 37

7.9 Default method ...................................................................................................................... 37

7.10 Method export and import ..................................................................................................... 37

8. RESULTS ...................................................................................................................................... 39

8.1 Test Results .......................................................................................................................... 42

8.1.1 Result data and curve ....................................................................................................... 43

8.1.2 Statistics ............................................................................................................................ 43

8.1.3 Result export ..................................................................................................................... 44

9. HOW TO OBTAIN THE BEST RESULTS ..................................................................................... 42

9.1 Measurement principle of the Halogen Moisture Analyzer ................................................... 42

9.2 Sampling and sample preparation ........................................................................................ 43

9.3 Selection of the drying temperature ...................................................................................... 46

9.4 Selection of the drying program ............................................................................................ 47

9.5 Selection of the drying time ................................................................................................... 48

9.6 Analysis of the drying profile ................................................................................................. 48

10. HELP INFORMATION ............................................................................................................... 52

10.1 Level Assist ........................................................................................................................... 50

10.2 Temperature Guide ............................................................................................................... 51

11. PRINTING TEST DATA ............................................................................................................ 52

11.1 RS232 Command Table ........................................................................................................ 54

11.2 RS232 Pin out ....................................................................................................................... 54

12. CARE AND MAINTENANCE .................................................................................................... 55

12.1 Cleaning Interior/Exterior Components .................................................................................... 55

12.2 Replacing Power Line Fuse ................................................................................................. 57

12.3 Troubleshooting ........................................................................................................................ 57

12.4 Error detection ....................................................................................................................... 58

12.5 Service information ................................................................................................................... 59

12.6 Accessories .......................................................................................................................... 59

13. TECHNICAL DATA ................................................................................................................... 59

13.1 Admissible ambient conditions .............................................................................................. 59

13.2 Specifications ........................................................................................................................ 60

14. COMPLIANCE........................................................................................................................... 60

A.1 APPLICATION EXAMPLES......................................................................................................62

1

Turns On or Off display.

2

When pressed, sends Print command.

3

When pressed, either starts or stops the drying process.

4

When pressed, performs Tare function.

5

Leveling indicator

6

Leveling Feet

Used to level the Moisture Analyzer.

Overview of Controls

1 2 3 4 5 6

MB120 EN-1

1. GETTING TO KNOW YOUR MOISTURE ANALYZER

This section provides you with essential information on your MB120 Moisture Analyzer.
Please read through the section carefully even if you have previous experience with OHAUS
Moisture Analyzers and be sure to familiarize yourself with the safety notes.

1.1 Introduction

Thank you for deciding to purchase an MB120 Halogen Moisture Analyzer from Ohaus.
Behind your instrument stands OHAUS, a leading manufacturer of precision Moisture
Analyzers, Balances, Scales and Indicators. An Aftermarket Department with trained
instrument technicians is dedicated to provide you with the fastest service possible in the
event your instrument requires servicing. OHAUS also has a Customer Service Department
to answer any inquiries regarding applications and accessories.

To ensure you make full use of the possibilities offered by your Moisture Analyzer, please
read the manual completely before installation and operation.

You can also find and download the instruction manual at
http://dmx.ohaus.com/WorkArea/showcontent.aspx?id= 4294974363

1.2 Overview of the Moisture Analyzer

The Moisture Analyzer offers a high level of operating convenience and useful functions to
make accurate measurements.

The Moisture Analyzer has the following features:

— Fully programmable with colorful touch screen
— Extremely rugged and chemically resistant construction.
— Ergonomic operating controls and a large, easily readable display.
— Easy to follow menus for simplified operation.
— Built-in functions for manual, automatic timing, printing intervals.
— Built-in selectable drying profiles.
— Able to set step heating levels to accommodate a variety of sample types.
— Built-in library stores up to 100 samples complete with setup parameters and

statistics.

— Built-in RS232 and USB interface.
— Any of thirteen languages (English, Spanish, French, German, Italian, Russian,

Polish, Czech, Hungarian, Portuguese, Chinese, Japanese, Korean)

— Display contains all test data during drying process.
— A variety of optional accessories includes disposable pan liners, temperature

calibration kit, interface communication cables, printer, and a security device.

1.3 What is a Moisture Analyzer?

The Ohaus Halogen Moisture Analyzer can be used to determine the moisture content of
practically any substance. The instrument operates on the thermogravimetric principle: At
the start of the measurement, the Moisture Analyzer determines the weight of the sample;
the sample is then quickly heated by the integral halogen dryer unit and moisture vaporizes.
During the drying operation, the instrument continuously determines the weight of the
sample and displays the result. On completion of drying, result is displayed as % moisture
content, % solids, weight or % regain.

Of particular importance in practice is the rate of heating. In comparison with conventional
infrared heating or the drying oven method, for example, the halogen dryer of your

EN-2 MB120

instrument needs a shorter time to reach its maximum heating power. It also allows the use
of high temperatures; an additional factor in shortening the drying time. Response times for
the control of production are shorter resulting in increased productivity.

All parameters of a measurement (drying temperature, drying time, etc.) can be pre-selected.
The Moisture Analyzer offers many other possibilities. A few of these are listed here:

— The integrated database for drying procedures stores the settings for your

samples.

— The drying characteristics can be matched to the type of sample.
— Your settings and measurement results can be recorded and stored.

— Built-in battery backup stores valuable data during a power failure.
Even though the Moisture Analyzer contains many functions, operation remains simple. The

four button controls on the front panel for the frequently usage: Power on/off, Print,
Start/Stop and Tare. The 4.3” color touch screen allows entry into a variety of displays which
includes a test library where previous samples are recorded along with the test parameters
so that a similar sample can be run without the need to enter all new data. The color touch
screen also indicates the method name, selected temperature, actual temperature, time and
moisture content in percent, solids in percent, grams, % regain and a graphical display which
illustrates the time and percentage.

Your Moisture Analyzer conforms with all common standards and directives. It supports
standard procedures, work techniques and records as required by GLP (Good Laboratory
Practices) and SOP (Standard Operating Procedure). We recommend the use of the
OHAUS SF40A Printer.

2. SAFETY INFORMATION

2.1 Definition of Signal Warnings and Symbols

Safety notes are marked with signal words and warning symbols. These show safety issues
and warnings. Ignoring the safety notes may lead to personal injury, damage to the
instrument, malfunctions and false results.

Signal Words
WARNING for a hazardous situation with medium risk, possibly resulting in

severe injuries or death if not avoided.
CAUTION for a hazardous situation with low risk, resulting in damage to the
device or the property or in loss of data, or minor or medium injuries if
not avoided.
Attention (no symbol)
for important information about the product.
Note (no symbol)
for useful information about the product.

MB120 EN-3

General hazard

Electrical shock

Hot surface

Inflammable or
explosive substance

Toxic substance

Acid / Corrosion

It is not permitted to use the instrument in explosive atmosphere of gases, steam,
fog, dust and flammable dust (hazardous environments).

A lab coat should be worn.

Warning Symbols

2.2 Product Specific Safety Notes

General Safety Information

Your instrument meets the state of the art technology and complies with all recognized
safety rules, however, certain hazards may arise in extraneous circumstances. Do not open
the housing of the instrument: It does not contain any parts which can be maintained,
repaired or replaced by the user. If you ever have problems with your instrument, contact
your authorized OHAUS dealer or service representative.
Always operate and use your instrument only in accordance with the instructions contained
in this manual. The instructions for setting up your new instrument must be strictly observed.

If the instrument is not used according to these Operating Instructions, protection of
the instrument may be impaired and OHAUS assumes no liability.
Intended Use

Your Moisture Analyzer is used for determining the moisture in samples. Use the instrument
exclusively for this purposes. Any other type of use and operation beyond the limits of
technical specifications without written consent from OHAUS, is considered as not intended.
Moisture determination applications must be optimized and validated by the user according
to local regulations. Application-specific data provided by OHAUS is intended for guidance
only.

Staff Safety

The Moisture Analyzer may be operated only by trained personnel who are familiar with the
properties of the samples used and with the handling of the instrument.
In order to use the instrument, you must have read and understood the operating
instructions. Keep the operating instructions for further reference.
Never make any modifications to the instrument and use only original spare parts and
optional equipment from OHAUS.

Protective Clothing

It is advisable to wear protective clothing in the laboratory when working with the instrument.

EN-4 MB120

A suitable eye protection such as goggles should be worn.

Use appropriate gloves when handling chemicals or hazardous substances,
checking their integrity before use.

WARNING
Risk of electric shock

Your instrument is supplied with a 3-pin power cable with an equipment
grounding conductor. Only extension cables which meet this relevant standards
and also have an equipment grounding conductor may be used. Intentional
disconnection of the equipment grounding conductor is prohibited.

CAUTION
The Halogen Moisture Analyzer works with heat!

a) Ensure sufficient free space around the instrument to avoid heat accumulation
and overheating (approx. 1 m free space above the heating module).
b) The vent over the sample must never be covered, plugged, taped over or
tampered with in any other way.
c) Do not place any combustible materials on, under or next to the instrument
since the area around the heating module may be hot.
d) Exercise caution when removing the sample. The sample itself, the sample
chamber, the draft shield and any sample vessels used may still be very
hot.
e) During operation, you should never open the heating module itself as the
ring-shaped heating reflector or its protective glass can reach 400 °C! If
you have to open the heating module e.g. for maintenance, disconnect the
instrument from the power supply and wait until the heating module has
cooled down completely.
f) No modifications must be made within the heating module. It is particularly
dangerous to bend any components or remove them or to make any
other changes.

Certain samples require special care!

With certain types of samples, there is a possibility of danger to personnel or damage of
property.
Please note that the user always has the responsibility and liability for damage caused by
use of any types of samples!

CAUTION
Fire or Explosion

• Flammable or explosive substances.

• Substances containing solvents.

• Substances which evolve flammable or explosive gases or vapors when

heated.
a) In cases of doubt, perform a careful risk analysis.
b) Work at a drying temperature that is low enough to prevent the formation
of flames or an explosion.
c) Wear protective goggles.
d) Work with small amounts of sample.

e) Never leave the instrument unattended!

Safety Notes

MB120 EN-5

WARNING
Substances which contain toxic or caustic components

Toxic gases produced during drying could cause irritations (eyes, Skin,
breathing), illness or death.

– Such substances may be dried only in a fume cupboard.

CAUTION
Corrosion

Substances which evolve corrosive vapors when heated (e.g. acids).
– Work with small amounts of samples as the vapor can condense on cooler
housing parts and cause corrosion.

DO NOT install the Moisture Analyzer:

• Next to open windows or doors causing
drafts or rapid temperature changes.

• Near air conditioning or heat vents.

• Near vibrating, rotating or reciprocating

equipment.

3. INSTALLATION

In this section, you will learn how you unpack and install your new Moisture Analyzer and
prepare it for operation. On completion of the steps described in this section, your Moisture
Analyzer is ready for operation.

3.1 Unpacking and checking the standard equipment

Open the package and remove the instrument and the accessories. Check the completeness
of the delivery.
The following accessories are part of the standard equipment of your new Moisture Analyzer.

— 1 Box, Aluminum sample pans
— 1 Pan support
— 1 Glass fiber Pad
— 1 Draft shield
— 1 Tray Pan
— 1 Power cable
— 1 Pan Handle
— 1 Spoon
— 1 Quick Guide

Remove packing material from the instrument.
Check the instrument for transport damage. Immediately inform your Ohaus dealer if you
have complaints or parts are missing.
Store all parts of the packaging. This packaging guarantees the best possible protection for

the transport of your instrument.

3.2 Selecting the Location

The Moisture Analyzer should always be used in an environment which is free from
excessive air currents, corrosives, vibration, and temperature or humidity extremes. These
factors will affect displayed weight readings.

EN-6 MB120

• Near magnetic fields or equipment that
generate magnetic fields.

• On an unlevel work surface.

• In confined areas, allow sufficient

space around the instrument for ease
of operation and keep away from
radiating heat sources.

Lift the cover straight up and Install the tray
pan in the base of the heating chamber.

Install the draft shield (only one position
possible) on top of the tray pan.

Install the pan support into position. Turn the
pan support until it engages. In the locked
position, the arm of the pan support points
directly towards the front of the analyzer.

Leveling
Indicator

Leveling

3.3 Installing the Tray Pan, Draft Shield and Pan Support

3.4 Leveling the Moisture Analyzer

Exact horizontal positioning and stable installation are prerequisites for repeatable results.
To compensate for small irregularities or inclinations at the location, the instrument can be
leveled.

Adjust the leveling feet of the Moisture
Analyzer until the air bubble in the
indicator is centered. The level indicator is
located under the cover towards the rear of
the Moisture Analyzer.

Attention: The instrument should be
leveled each time its location is changed.

Feet

MB120 EN-7

WARNING: Risk of electric shock.

- Use only the 3-pin power cord with equipment grounding connector which
was supplied with your instrument. Only connect the power cord to a 3-pin
ground outlet.

- Only extension cords which meet the relevant standards and also have an
equipment grounding conductor may be used.

Attention:

Check to ensure the voltage stated on the Moisture Analyzer’s data label matches your local
line voltage. If this is not the case, do not connect the Moisture Analyzer to the power supply,
contact your responsible OHAUS dealer.
The halogen dryer unit is designed to operate at a specific line voltage
(120V AC or 240V AC). The dryer unit is installed at the factory and is matched to the
particular line voltage of the country of destination.

Connection to a line voltage that is too high can lead to burning out the halogen heater,
whereas, a supply voltage that is too low will prolong the drying process and the instrument
may not operate properly.

Connect the power cord to the power supply socket located at the
rear of the Moisture Analyzer and to the power supply outlet. The
Moisture Analyzer becomes operational as soon as power is
applied. The display will remain off until the On/Off button is
pressed.

Allow the Moisture Analyzer to warm up for at least 30 minutes to
enable it to adapt itself to the ambient conditions. If the Moisture Analyzer
has been stored in a very cold environment before installation, it may
require several hours for it to stabilize.

WARNING:
If the power cable supplied is not long enough, use only a proper 3-pin
extension cable with an equipment grounding connector.

To switch the Moisture Analyzer on, press the
On/Off button. An internal diagnostic test is

performed; the display lights and the Home screen
appears followed by the initial display.

To switch the Moisture Analyzer off, press the
On/Off button. After the analyzer has been switched

off, it is in the standby mode. If you wish to perform a
test, press the On/Off button again.

3.5 Connecting to a Power Supply

3.6 Switching the Moisture Analyzer on and off

Your Moisture Analyzer is on at all times when connected to a power source. The display can be
turned on or off.

EN-8 MB120

Note:

As your Moisture Analyzer needs no warm-up time
when in the standby mode and is immediately ready
for testing samples, we advise you to switch the
display off by use of the On/Off button and not to
disconnect it from the power supply. This also ensures
that the Moisture Analyzer is always in thermal

equilibrium.

If the display is not visible and the unit is plugged into a
power source, press the On/Off button.

Directly start a measurement.

Open the cover on the Moisture Analyzer.
Clean the pan.
Place the pan handle in the sample chamber. Ensure
that the tongue of the pan handle fits exactly in the slot
of the draft shield element.

Place the empty sample pan and glass fiber pan in the
pan handle. The sample pan must lie flat in the pan
handle.

Attention: It is advisable for you to work with the pan
handle at all times. The pan handle is ergonomic, safe
and provides protection against possible burns due to a
hot sample pan.

Close the cover. This sets the Moisture Analyzer to zero
automatically.

Open the cover on the Moisture Analyzer.
Wet the glass fiber pan with a 0.5 to 1 gram of water.

Attention: Minimum sample size must be greater
than 0.5 gram.

Starting the test

Close the cover, the Moisture Analyzer starts the drying
and measurement process automatically.

4. MAKING A SIMPLE MEASUREMENT

With your Moisture Analyzer powered on, you are ready to operate for the first time and
perform a simple measurement. For this simple test, you will enter the Default method and
enable the test. By doing this test, you will become familiar with the instrument.
Included with your Moisture Analyzer is a specimen sample for your first measurement. This
sample is an absorbent glass fiber pad. During your first measurement, the instrument
operates with the factory settings.

MB120 EN-9

Drying and measurement

You are now able to follow the progress of the drying
cycle on the display. This first display comes up
automatically when the test was started.

Observing the test progress

There are two displays available when the Moisture
Analyzer is running a test. One showing the %MC value
and another showing a curve.
When pressing the data area while %MC is shown, the
display will switch to show the curve. Likewise, pressing
the data area again will switch back to show the %MC
value.

The display indicates the Method Name,
Temperature/Time, actual temperature, elapsed time
duration of the test, moisture and curve. The test
automatically stops at the end of the measurement.
If you want to end the test sooner, press the
button.

Congratulations! You have just performed your first
measurement with your moisture analyzer.

CAUTION: Danger of burns.
Sample, sample pan and
sample pan holder may still be
hot.

Open the cover and carefully remove the sample pan
handle from the drying area.

The analyzer comes with a default method preinstalled.
The settings of the default method are shown on the
display. To edit the settings, press on the area where the
settings are displayed as shown to the left.

Press the setting items to edit them.
Please see section 7 for more details.

EN-10 MB120

Press the Method library button to access the
Method library menu.

The Method library contains up to 100 methods.
All methods which were previously entered can
be recalled and the parameters for the recalled
method when selected will be repeated.

Press the button to sort the method
name by ascending or descending alphabetical
order.

Press the Test results button to access the test
results menu.

The Test results contains up to 1000 test
results. All results can be recalled, sorted and
displayed statistically.

5. MENU

The Home screen appears after the moisture analyzer has been switched on.
1 2 3 4
Button area
Current Method

Results area

Instructions area
User name, date

and time area

1. Method library: Change parameters and create new method.

2. Test results: Manage test results.

3. Setup: Change system settings.

4. Help information: Temperature guide and help information.

Method Library

Test Results

MB120 EN-11

Press the Setup button to access the Setup
menu.

Press the Help button to access the Help
menu.

Press the Setup button to access the Setup
menu.

Setup

Help Information

6. SETUP

The setup menu is activated by pressing the Setup button. The menu contains: weight and
temperature adjustment, user settings, device settings, user management and system and
data management.

6.1 Weight and temperature adjustment

6.1.1 Weight adjustment

The Moisture Analyzer can be adjusted with an external mass of 50 grams. Adjustment of
the Moisture Analyzer is not absolutely necessary for a correct moisture determination as the
measurement is relative. The balance determines the weight of the sample before and after
drying and the moisture is calculated on the basis of the ratio between wet and dry weights.
Nevertheless, you should adjust the built-in balance under the following conditions:

- If this is stipulated by your quality assurance system (GLP, GMP, ISO 9001).

- If you suspect the analyzer has been abused.
To adjust the analyzer, proceed as follows:

EN-12 MB120

Press Back to return to Home screen.

Press the Weight and temperature
adjustment button to access adjustment
menu.

Press Back to return to previous step.

Press the Weight adjustment-external button

The display highlights the action you should
take.
Follow the instructions on the display.
Remove the sample pan. Place the required
weight on the sample pan, close the cover.
The display indicates if the adjustment was
successful.

Press Setup button to access the adjustment
menu.

6.1.2 Temperature adjustment

You must have a temperature calibration kit to perform this procedure. If the Moisture
Analyzer has been recently used, allow at least 30 minutes before performing adjustment.

Note: The temperature calibration kit is available as optional equipment.

MB120 EN-13

Press Back to return to Home screen.

Press Weight and temperature adjustment
button.

Press Back to return to previous screen.
Press Exit to return to Home screen.

Press Temperature adjustment button.

You are now prompted to remove the pan
support. Place a temperature calibration kit
and close the upper housing.

Press the Start to initiate the temperature
adjustment process. Follow the screen
prompts throughout the process.

The dryer unit is heated to a temperature of
100°C. You can observe the progress on the
display as the dryer temperature and count
down period are displayed. After 15 minutes,
read the thermometer through the inspection
window on the cover and enter this
temperature. Adjust the display reading to
agree with the thermometer, then press the
Enter button. You have 15 minutes to make
this adjustment, otherwise the adjustment is
terminated.

EN-14 MB120

This is a two-point adjustment (100°C and
160°C). The dryer unit now heats to the
second temperature (160°C). Adjustment of
the temperature is defined by two points.
Proceed exactly as you did for the first
temperature. After you have set the display
to agree with the thermometer, then press
the Enter button.

CAUTION: Danger of burns.

Be careful when removing the temperature
calibration kit from the dryer unit as it can be
very hot. Allow it to cool down by opening the
cover before removing.
Remove the calibration kit. Replace the pan
support in its proper positions.

Press Setup button to access the Setup
menu.

Press Adjustment to access the adjustment
menu.
Press Back to return to Home screen.

Press Weight adjustment record to list the
weight adjustment record data.
Press Back to previous step.
Press Exit return to Home screen.

6.1.3 Weight adjustment record

MB120 EN-15

Press the Setup button to access the Setup
menu.

Press Back to return to Home Screen.

Press the Weight and temperature
adjustment button to access the adjustment
screen.

Press Back to return to previous screen.
Press Exit to return to Home screen.

Press the Temperature adjustment history
button.

Here you will find the last temperature
adjustment result.
Press Back to return to previous screen.

Press the Setup button to access the Setup
screen.

Press Back to return to Home screen.

6.1.4 Temperature adjustment record

6.2 User settings

6.2.1 Language

For convenience, the Moisture Analyzer is equipped with thirteen languages available on all
displays. The following steps show how to set a language.

EN-16 MB120

Press User settings to access the user
settings menu.

Press the Language button.

Select LANGUAGE.
Note: If you select English as the dialog

language, the date format is changed and
appears on all records in the MM/DD/YYYY
format.

Press the Setup button to access the Setup
menu.

Press Back to return to Home screen.

Press User settings button to access the
User settings menu.

Press Back to return to previous screen.
Press Exit to return to Home screen.

Press the Brightness button.

6.2.2 Brightness

MB120 EN-17

Adjust the brightness of the screen to
desired level.

Press the Setup button to access the Setup
menu.

Press Back to return to previous screen.

Press User settings button to access the
User settings menu.

Press Back to return to previous screen.
Press Exit to return to Home screen.

Press the Volume button.

Adjust the volume of the beep to desired
level.

.

6.2.3 Sound

EN-18 MB120

Press the Setup button to access the setup
menu.

Press Back to return to previous screen.

Press Device settings to access the Device
settings menu.

Press Back to return to previous screen.
Press Exit to return to Home screen.

Press the Date-Time button.

Press the following items to set the date and
time.
Press Back to return to previous screen.
Press Exit to return to Home screen.

Set the date format.
Press Back to return to previous screen.

6.3 Device settings

6.3.1 Date and Time

This Moisture analyzer has a communication output which allows printing the date and time
on every record. When this instrument is put into operation for the first time, you should enter
the current date and time. These settings are retained even if you disconnect your
instrument from the power supply. A built-in battery will maintain all data. To set the date and
time, proceed as follows:

MB120 EN-19

Set the date.
Press + and – to set the correct date, month
and year.

Set the time format.

Set the time.
Press +and – to set the correct time.

Press the Setup button to access the Setup
menu.

Press Back to return to Home screen.

Press the Device settings button to access
the Device settings menu.

Press Back to return to previous screen.
Press Exit to return to Home screen.

6.3.2 Peripherals

This Moisture Analyzer is equipped with USB and RS232 compatible interfaces for
communication with USB storage devices, printers and computers.
The following sections describe the hardware and software provided with the Moisture
Analyzer.

EN-20 MB120

Press the Peripheral settings button.

Select the following items to set RS232 port
when RS232 port link to printer or other
RS232 compatible device.
Press Back to return to previous screen.
Press Exit to return to Home screen.

Set the Device port

Select the com1 for RS232, com4 for USB

Set the Baud rate

Select the desired baud rates to 1200, 2400,
4800, 9600, 19200, 38400, 57600 or

115200. Default setting is 9600.

Set the Data bits

Select the desired data bits to 7 or 8. Default
setting is 8.

Set the Parity

Select the desired parity setting to either
NONE,EVEN or ODD. Default setting is
NONE.

Set the Stop bits

Select the desired stop bits to 1 or 2. Default
setting is 1.

MB120 EN-21

Press Setup button to access the Setup
menu.

Press Back to return to Home screen.

Press the Device settings button.

Press Back to return to previous screen.
Press Exit to return to Home screen.

Press the Print settings button to access
the Print settings menu.

Press Print adjustment result
automatically to switch ON or OFF.
Press Print measurement result
automatically to switch ON or OFF.
Press Intermediate results print interval to
set the print interval.
Press Back to return to previous screen.
Press Exit to return to Home screen.

Press the Intermediate results print
interval button.
Choose the interval seconds or minutes.

Set the Handshake
Select the desired handshake to NONE,
Xon/Xoff. Default setting is NONE.

6.3.3 Print

EN-22 MB120

Press the Setup button to access the setup
menu.

Press Back to return to Home screen.

Press the Device settings button to access
the Device menu settings.

Press Back to return to previous screen.
Press Exit to return to Home screen.

Press GLP and GMP Data to access the
GLP and GMP Data menu.

Press Company name, Department or
Instrument ID buttons to define related
information.

Press Back to return to previous screen.
Press Exit to return to Home screen.

Press the Setup button to access Setup
menu.

Press Back to return to Home screen.

6.3.4 GLP and GMP Data

6.3.5 Touch Screen Adjustment

MB120 EN-23

Press Device settings to access the device
settings.

Press Touch screen adjustment to adjust
the touch screen.

Press the Start button to start the
adjustment.

Please follow the displayed instructions to
adjust the screen.

When the adjustment is completed, press
OK to exit.

Default access rights

Group

Test

execute

User

settings

System

settings

Method

Edit

Adjustment

User and data

management

Administrator

■ ■ ■ ■ ■

■

Supervisor

■ ■ ■ ■ ■

□

Operator

■ ■ □ □ □

□

6.4 User management

6.4.1 Create new user account

There are three groups available and the default group with all access rights is administrator.
The administrator group can not be deleted.
10 users can be created under the supervisor and operator group.

EN-24 MB120

Press the Setup button to access Setup
menu.

Press Back to return to Home screen.

Press User Management button to access
User management menu.

Press User Information to edit related
settings.
Press Back to return to previous step.
Press New button to create a new account.

Key in the user name and press OK to save.
Press Cancel to return to previous step
without saving.

Press Password to set the password.

Press the ON button to enable the password.

MB120 EN-25

Set the password.
Press OK to key in the password one more
time to confirm.
Press Cancel to exit the password settings
without saving.
Press OFF to disable the password.

Press Group to access group settings.
Three groups are available. The group with
all access rights is administrator. The
administrator group cannot be edited or
deleted. All other groups can be edited or
deleted.

If the password has been lost, please contact your nearest OHAUS
dealer for further assistance.

6.4.2 Login and logout

Press the icon to access the

logout screen.

Press OK to logout.

Press the user account to login.

EN-26 MB120

Press the Setup button to access Setup
menu.

Press Back to return to Home screen.

Press the System and data management
button to access the System and data
management menu.

Press Back to return to previous step.
Press Exit to return to Home screen.

Press Export and import settings and
methods to access the export and import
menu.

6.5.1.1 Export data

Press Export data to USB flash drive to
select location and export data to USB drive.
Press Back to previous step.
Press Exit to return to Home screen.

Press File name to change file name.
Press Location to select the export location.
Press Export selection to select the export
items.
Press Cancel to previous step.

Press User 1 to switch to other user
account.
Press Login to login

6.5 System and data management

6.5.1 Export and import settings and methods

MB120 EN-27

Press the items to select.
Press Cancel to cancel data export.
Press OK to confirm and back to previous
step.

After selecting the location, the Export
button is available.
Press Cancel to cancel data export.
Press Export to execute.

6.5.1.2 Import data

Press Import data from USB flash drive to
select location and import data from USB
drive.
Press Back to previous step.

Press Import from file to select the file to
import.
Press Cancel to cancel data import.

After selecting the import file, the Import
button is available.
Press Cancel to cancel data import.
Press Import to execute.

EN-28 MB120

6.5.2 Backup and restore

6.5.2.1 Backup system

Press Backup and restore to backup or
restore the system settings.

Press Backup system on USB flash drive
to back up the system.
Press Back to previous step.

Press Back to return to previous step.

Press File name to change the file name.
Press Location to select the backup
location.
Press Cancel to cancel the backup.

After selecting the backup location, the
Backup button is available
Press Cancel to cancel the backup.
Press Backup to execute.

6.5.2.2 Restore system

Press Restore system from selected back
up to restore system.
Press Back to previous step.

Press Restore from file to select the restore
file.
Press Cancel to cancel the restore.

MB120 EN-29

After select the restore file, the Restore
button is available.
Press Cancel to cancel the restore process.
Press Restore to execute.

6.5.3 Export event logs

Press Export event logs to access the
export event logs menu.

Press File name to change file name.
Press Location to select the export location.
Press Cancel back to previous step.

After selecting the export location, the Export
button is available.
Press Cancel to cancel export.
Press Export to execute.

6.5.4 Factory reset

Press the Factory reset button to reset to
factory default settings.

Press Cancel to return to previous screen
without resetting.
Press Reset to perform a reset.
CAUTION:

All methods, test results and user
account will be deleted when performing
a reset!

EN-30 MB120

After factory reset, press OK to restart the
instrument.

6.5.5 Software update

Press Software update to access the
update software screen.

Press update from file to select the update
file.
Press Cancel to return to previous screen.

After select the update file, the Update
button is available.
Press Update to execute.

MB120 EN-31

Press Method library in Home screen.

Press method name to check method
settings and load to current method.

Press to filter the method name.
Press Back to Home screen.

Press New to create a new method.
Press Export to export methods.
Press Import to import methods.

Enter the Method 1 to check the settings.
Press Back to previous screen.
Press Delete to delete this method.
Press Edit to edit method settings.
Press Load to load this method as current
method.

Press Method Library on the Home screen.
The method library is displayed.

Complete information on how to use the
library is covered in this section.
Press the New button to start a new test.
The screen will change to key in the new
method name.

7. METHOD LIBRARY

This section contains information on the use of the Method Library which will enable you to
set the actual drying parameters such as Profile, Switch-Off, Display, Target Weight and the
use of the library.

The Operating Concept

You have already set the Moisture Analyzer setup in Section 5 and have tried the simple
moisture determination in Section 3. You are now ready to perform moisture determinations
in a precise manner. The test menu shown in Section 6 offers a number of setting
possibilities to match the measurement process to your specific requirements. For instance,
you can select the drying temperature, type of display and many other parameters.
Please keep in mind the importance of preparing your sample, the distribution of the sample
on the weighing pan, the type of sample and the temperature range. Remember, the greater
the number of uniform samples tested, the greater the accuracy of the results.
Please review this entire section before actually making any settings to become familiar with
the instrument.

7.1 Method load, edit and delete.

7.2 Entering Method Name

EN-32 MB120

Enter either a method name or identifying
number and press the OK button.

Press the Drying program button.

Standard Profile

Fast Profile

Ramp Profile

For this temperature program, the
temperature and time elapsed between the
start of drying and the attainment of the final
temperature is set.

7.3 Setting the Drying Profile

The drying profile contains four settings, Standard, Fast, Ramp and Steps. This section describes
each of the drying profiles. Review the profile descriptions. Depending upon the sample material to be
analyzed, select the appropriate profile and proceed as follows:

MB120 EN-33

Step Profile

For STEP 1, use the defined temperature
and time.
Repeat the above procedure for step 2 and
Final step.

Press the Drying Temperature button to
access the temperature setting menu.

Enter the desired drying temperature and
press the OK button.

The following settings can be selected for the
switch-off criterion:

— Timed switch-off
— Auto switch-off (weight loss per unit of

time - 3 settings)
— Auto free switch-off (user-defined mean
weight loss per unit of time)
— Auto free switch-off (user-defined mean
moisture % loss per unit of time)

7.4 Setting the Drying Temperature

The drying temperature can be set from 40 °C to 230 °C.

Attention: If you are working at temperatures above 200 °C, we advise you to wait 2 to 3
minutes to open the instrument lid between individual measurements to ensure good
reproducibility and avoid overheating of the instrument.

7.5 Selecting the switch-off criterion

This menu offers you different switch-off criterion. Switch-off criterion defines when the
instrument should end the drying. Switch-off criterion eliminates checking your watch or
clock and stopping the drying manually. Review the list below and select one criterion that
suits your purpose.

EN-34 MB120

Timed switch-off

With this switch-off criterion selected, the
measurement lasts until the preset drying
time has elapsed (the display provides you
with continuous information on the drying
time).
Using the +/- buttons, enter the desired
drying time and press the OK button.

Select A30 (1mg/30s), A60 (1mg/60s) or A90
(1mg/90s).

Select AutoFree mean weight loss per unit of
time or weight loss in percent per unit of
time.

AutoFree (mg/s)
Enter the weight loss (1mg to 10mg).

Auto switch-off

The switch-off criterion is based on a weight loss per unit of time. As soon as the mean
weight loss is less than a preset value during a specified time, the instrument considers
drying as complete and automatically discontinues the measurement process. During drying,
the display indicates the elapsed time of the drying process; the switch-off criterion is
inactive during the first 30 seconds.
The automatic switch-off criterion is divided into three selectable levels:
— A30: Less than 1mg loss in 30 seconds, used for samples which dry very quickly
(surface moisture) or for (relatively inaccurate) fast measurements to determine a trend.

— A60: Less than 1mg loss in 60 seconds, used for most types of samples.
— A90: Less than 1mg loss in 90 seconds, used for slow drying substances

(trapped moisture, skin formation).
Select the criterion for your measurements.

Auto free switch-off

Auto free switch-off criterion are based on a user defined mean weight loss per unit of time
or mean weight in percent per unit of time. If none of the three switch-off criteria “Weight loss
per unit of time” is suitable for your application, the Moisture Analyzer allows you to define a
free switch-off criterion. The free switch-off criterion are based on the principle of the mean
weight loss per unit of time and mean weight loss in percent per unit of time. As soon as this
drops below the preset value, the measurement is automatically ended.

MB120 EN-35

Enter the time (5 seconds to 300 seconds).

AutoFree (%/s)
Enter the weight loss (0.01% to 5.00%).

Enter the time (5 seconds to 300 seconds).

Press the Displayed result button.

Select %MC, %DC, %RG or g.

7.6 Displayed result

Displayed result offers you the choice of whether your display indicates % MC, % DC, % RG
or grams during the measurement process.

%MC(Moisture Content) = Initial weight-Final weight x 100%

%DC(Solids Content) = Final weight x100%

Initial weight

%RG(Regain Content) = Initial weight-Final weight x 100%
Final weight

Initial weight

EN-36 MB120

Select the Target Weight.

Enable the Target weight and press the ON
button.

Set the Target weight and press the OK
button.

Press Target weight tolerance to set the
tolerance of the Target weight.

Set the Target weight tolerance in %.

The check weighing bar indicates the sample
weight.

7.7 Target Weight

Target weight is used when previous samples have been tested and the target weight is

known. A consistent sample size is required when using Target Weight.

MB120 EN-37

Press the Starting mode button.

Automatic

This mode can be used for most kinds of
samples. When closing the sample chamber,
the weight of the sample is recorded and the
measurement starts.
It is the factory default setting.

The analyzer comes with a default method
preinstalled.
Follow the instruction message to start a
measurement directly.
Press parameters area to edit.

7.8 Starting Mode

In this menu you can define if the instrument should perform certain functions automatically
or manually.

Manual

We advise you to use the manual operating mode for samples which contain readily volatile
substances. In contrast to the automatic operating mode, in the manual operating mode the
sample chamber does not automatically close when the Start/Stop button is tapped.
However, the initial weight important for the determination of the moisture content is
recorded. In the manual operating mode you have time for further preparation of the sample
while weight losses due to evaporation during the preparation time are measured from the
outset. As soon as the sample is ready for drying, close the sample chamber. As soon as the
automatic sample chamber is closed, drying starts. In the manual operating mode you can
open the sample chamber during a drying operation. In contrast to the automatic mode,
drying will not be stopped but simply interrupted until the automatic sample chamber is
closed again.

7.9 Default method

EN-38 MB120

After change the settings, the Save button
available.
Press Save to save to default method.

Press Export to export methods.

Press File name to change export file name.
Press Location to select the export location.
Press Export selection to select methods to
export.
Press Cancel to return to previous screen.

After selecting the export location and methods,
the Export button is available.
Press Export to execute.

Press Import to import methods.

7.10 Method export and import.

MB120 EN-39

Press Import from file to select the file to import.
Press Cancel to previous screen.

After selecting the import file, the Import button is
available.
Press Location to change the import location.
Press Import selection to select methods to
import.
Press Cancel to return to previous screen.

Press the Results button on the Home
screen to access the results menu.

Select the method name to list all the test
results of the method.

Press to filter the method name.
Press Back to return to Home screen.

8.1.1 Result data and curve

Press result item to access the detail data.
Press Back to return to previous step.
Press Delete to delete the results.
Press Export to export these results.
Press Statistics to access statistics menu.

Press Back to return to previous step.
Press Delete to delete current result.
Press Export to export current result.
Press Curve to show result curve.

8. RESULTS

This section contains the management and evaluation of measurement results.

8.1 Test Results

EN-40 MB120

Press Back to return to results list.
Press Delete to delete current result.
Press Export to export current result.
Press Data to show detailed result data.

8.1.2 Statistics

Select the method name to list all the test
results of the method.
Press Statistics to access statistics menu.

Press result item to select.
Press to select all items.
Press Cancel to return to previous step.

After select the items, the OK button is
available.
Press result item to remove.

Press to remove all items.
Press Cancel back to previous step.

Press OK to execute.

8.1.3 Result export

Press Export to export all the results.

MB120 EN-41

Press File name prefix to edit file name.
Press Location to select export location.
Press Export selection to select export
results.
Press Cancel to return to previous step.

After select the export location, the Export
button is available.
Press Cancel to previous step.
Press Export to export results.

Press result item to check one result data
and export it.

Press Export to export this result.

Press Export to export this result.

Press File name to edit file name.
Press Location to select export location.
Press Cancel to return to previous step.

EN-42 MB120

After selecting the export location, the Export
button is available.
Press Cancel to previous step.
Press Export to the export result.

10.560g 6.578g

160°c

The Ohaus Moisture Analyzer comprises two instruments: a
precision balance and a dryer unit. In contrast to other
thermogravimetric methods (drying oven, infrared,
microwave), the Halogen Moisture Analyzer operates with a
halogen dryer unit. This ensures fast heating of the sample
and thus guarantees rapid availability of the measurement
results.

9. HOW TO OBTAIN THE BEST RESULTS

Following your first practical work with the Moisture Analyzer, in this section you will find
important information on how to obtain optimum results. You will learn what parameters
influence the measurement process and how you can match the instrument optimally to your
particular measurement test.

9.1 Measurement principle of the Halogen Moisture Analyzer

Your instrument performs measurements based on the thermogravimetric principle, i.e. the
moisture is determined from the weight loss of a sample dried by heating.

In addition to thermogravimetric methods, chemical and electrical methods for moisture
determination are also common. A familiar chemical method is Karl Fischer in which the
water content is determined by titration. This method is particularly suitable for determination
of the water content of liquids or for the detection of very small amounts of water (ppm range)
in solid and liquid samples.

Regardless of the measurement method used, the quality of the measurement stands or falls
by the preparation of the sample and a correct choice of the important measurement
parameters:

— Sample size
— Type of sample
— Drying temperature
— Drying time

In practice, however, not only the quality of the measurement results, but also the speed of
the measurement process is important. Thanks to its drying principle (with the heat
generated by a halogen radiator), the Halogen Moisture Analyzer is very fast. The drying
speed can even be increased further through optimum settings of the instrument.

The optimum drying temperature and the drying time are dependent upon the nature and
size of the sample and the desired accuracy of the measurement results. These can be
determined only by experiment.

Reproducibility

high

low

Sample distribution

always the same

different

MB120 EN-43

9.2 Sampling and sample preparation

Characteristics, preparation and size of the sample are all important contributing factors in
increasing speed and the quality of the measurement process.
Sampling and the sample preparation have a great influence on the reproducibility of the
measured results. It is also important that the sample being investigated is a representative
part of the total amount of the sample under test.

The final results of a moisture determination depends on a carefully thought out sample
preparation. The part of the sample used for analysis must always be representative of the
total quantity. The sample preparation includes work processes such as sampling, sample
division, size reduction, homogenization and others. All of these processes should be carried
out as quickly as possible and without loss or uptake of moisture.

As with most products, the lab samples are not homogenous. As a result, random sampling
will not lead to a representative sample. The appropriate standards and directions must be
consulted to determine the method of sampling as this is dependent upon the product,
consistency and the amount used.

Number of samples

An increase in the number of samples always leads to an improvement in the statistical
reliability of the analysis results. The size depends on the homogeneity of the test material,
the accuracy of the test material, the accuracy of the measurement method and the desired
accuracy of the measurement result.

Mechanical size reduction

Sample division is usually accomplished by specific types of mills influenced by the sample
characteristics. Hard, brittle samples are mainly reduced in size by pressure, impact or
friction action, whereas, soft and viscoplastic substances can be comminuted only by
shearing or cutting action. Whatever the operating principle of a mill may be, for the
subsequent moisture determination, there must be no loss of moisture during the milling
operation. If this cannot be avoided, it should at least be calculable. The quantitative
recovery of the mill chamber should also be simple and complete.

Use of quartz sand

To ensure an optimum drying process, samples should always have as large an area as
possible. Results of substances which form crusts (e.g. glucose syrup) or pasty substances
(e.g. butter) can be considerably improved by mixing with quartz sand. Sample pans with a
large volume and relatively high walls are needed for this.

Pasty, fat-containing and melting substances

For pasty, fat containing and melting substances, use of a glass fiber filter is advantageous
to increase the surface area of the sample. The glass fiber filter is tared together with the
sample pan. The liquid contained in the substance is uniformly and extensively distributed in
the interstices between the fibers throughout the available area. The same also applies to

EN-44 MB120

melting fats and fat containing samples. This increase in the surface area results in faster
and complete vaporization of the moisture. Pre-drying of the glass fiber filter and storage in a
desiccator is necessary only for highly precise measurement results.

Liquid substances

Liquid substances (e.g. dispersions) often tend to form drops on the sample pan owing to the
surface tension of the liquid. This prevents a rapid drying process. The use of a commercial
glass fiber filter shortens the drying time by a factor of 2 to 3. The glass fiber filter distributes
the liquid sample over a wide area as a result of its absorbent action. Pre-drying of the glass
fiber filter and storage in a desiccator is necessary only for highly precise measurement
results.

Skin-forming and temperature sensitive substances

The use of a glass fiber filter can be useful for temperature-sensitive and skin forming
substances. In this case, the sample to be dried is covered by the filter and thus receives a

“new surface”. This shields the surface of the sample against direct IR radiation. Gentler

heating of the samples is based on convection rather than on IR radiation. Experience with
this type of preparation has been good; particularly for products containing sugar. Further,
the shielding of the sample against direct IR radiation by covering the test substance can
make a considerable contribution to improving the reproducibility with temperature sensitive
samples.

Sugar-containing substances

Samples containing a large amount of sugar tend to caramelize on the surface. In such
cases, ensure a thin layer is applied. Also select a moderate temperature.

Sample application on the drying pan

To obtain reproducible results, it is essential to ensure uniform distribution of the sample on
the pan. An uneven distribution can result in homogeneous heat distribution in the sample.
As a result, the sample could be incompletely dried in the center owing to excessive piling.
Thick layers have an adverse effect on the escape of moisture. The resulting lengthening of
the measurement time promotes decomposition at the surface of the sample by prolonged
heat action.

Film formation on the sample can prevent complete escape of the moisture. With such
samples, ensure application of a thin and uniform layer thickness.
With readily volatile samples, rapid application of the sample on the sample pan is advisable,
otherwise, moisture can escape before the initial weight is recorded; here, use of the manual
operating mode is appropriate.

MB120 EN-45

CAUTION: Risk of Fire or Explosion.

Refer to the warning information in section 1.

Accuracy of the results

high

low

Sample weight

0.1g

Measurement time

long

short

Sample weight

0.1g

Sample weight

Repeatability

0.5g
1g
2g
5
10g

±0.6%
±0.3%
±0.15%
±0.06%
±0.03%

Treating the sample during drying

Occasionally, following recording of the initial weight of the sample and before the actual
drying, the test substance is subjected to further treatment. The halogen Moisture Analyzer
from OHAUS offers this possibility in the “manual” operating mode.

Such applications could include:
— Mixing of quartz sand: moisture which vaporizes during the mixing of the sample is
correctly taken into account in the final result.
— Coagulation of protein by dropwise addition of alcoholic solutions. This prevents skin
formation during drying. Added solvent is not recorded in the final result.
— Formation of readily volatile azeotropes by addition of solvents insoluble in water (e.g.
xylene, toluene).

Note that the addition of solvents can lead to the formation of flammable or even explosive
mixtures. With applications of this type, you should thus work with extremely small amounts
of samples and with the necessary care. In cases of doubt, a careful risk analysis must be
performed.

Selection of the optimum sample weight

The sample weight has an influence on both the accuracy of the measurement results and
the measurement time. With large amounts of samples, a great deal of water must vaporize
and the moisture determination takes longer.

To keep the measurement time as short as possible, we advise you choose a low weight for
your sample, but not so low that attainment of the required measurement accuracy is no
longer possible.

Influence of the sample weight on the repeatability of the results

Sample weight influences the repeatability of the Moisture Analyzer. The repeatability always
becomes worse with decreasing sample weight. The relation between sample weight and
repeatability is shown in the following table:

EN-46 MB120

With samples which have a high
moisture content, it is possible to
shorten the measurement time by
selection of the step or rapid drying
program. Here, the greatest part of the
existing moisture is separated at an
elevated temperature.
The drying temperature is then
lowered and kept constant until the
end of drying. The excessive
temperature is used for rapid

Measurement time

long

short

Drying temperature

The preceding table is based on the assumption that the sample is ideal, homogeneous and
its moisture can always be separated completely and free from decomposition (e.g. moist
sand). Deviations always comprise the uncertainty, which depends on the sample, and the
repeatability of the instrument. In practice, measurement differences appearing within a
measurement series can consequently be larger than the values of the halogen Moisture
Analyzer shown in the table.

The two examples below show how the sample weight is determined to keep the drying time
to a minimum and meet the accuracy demands of the instrument.

Example 1

The repeatability should be better than +0.15%. The accuracy table shows that a sample
weight of at least 2g is required to achieve this.

Example 2

Wet weight of sample: 10g
Mean value of the results: 15.5%
Repeatability from the table: +0.03%
Scatter of the measurement results (ideal sample) 15.47% –15.53%

9.3 Selection of the drying temperature

The drying temperature exerts a controlling influence on the measurement time. It must be
selected so that the sample neither decomposes nor changes its chemical structure. A
drying temperature that is too low can unnecessarily prolong the drying time.

Note also that certain samples can give off different amounts of moisture at different drying
temperatures. This is the case with substances in which the strength of the bonds binding
the moisture varies or those which tend to show signs of decomposition. Minimum deviations
from moisture content values of the reference method can be compensated by changing the
drying temperature.

The following procedure is suggested for selecting the temperature.

— Estimate moisture content of the sample.
— Determine the decomposition temperature of the sample by experiments.
— Compare the measurement results with the reference method if one exists.
— If an excessive amount of moisture is involved, lower the drying temperature. If the

experimental results are too low, the drying temperature was possibly too low or the
drying time too short.

vaporization of the moisture, but the effective sample temperature does not exceed the
boiling temperature of the liquid (cooling effect through endothermic vaporization). In certain
cases, local heating and decomposition could still occur at the sample surface.

MB120 EN-47

Standard drying

Standard drying is suitable for precise
determination of the moisture content
of most substances. For special cases
or for time optimized measurements,
the selection of a more complex drying
program may be advantageous.

Temperature profile

Final
temperature

Ambient
temperature

Standard

Time

Start

Ramp drying

Ramp drying is selected if substances
are not stable on exposure to the full
heating power of the halogen radiator
at the start. In ramp drying, sensitive
samples are prevented from
decomposition by the gentle heating.
Ramp drying can also be used
successfully with substances which
form a skin.

Temperature profile

Final
temperature

Ambient
temperature

Ramp drying

Time

Start

Fast drying

The fast drying program is suitable for
samples with a moisture content
between 5% and 15%. In fast drying,
the radiator power exceeds the set
temperature value during the first
minute following the start of drying.
This compensates the endothermic
heat of vaporization and accelerates
the drying process. Note that the
sample must contain sufficient
moisture during the first minute to cool
it.

Temperature profile

Final
temperature

Ambient
temperature

Time

Start

Fast drying

Step drying

The step drying program has a use
similar to that of fast drying. The
duration of the excessive temperature
stage and the temperature value are
freely selectable. It is used primarily
with samples with a moisture content
greater than 15%.

Temperature profile

Final
temperature

Ambient
temperature

Step drying

Time

Start

For MB120, OHAUS provides a temperature guide to estimate the proper temperature for
reference. Please see section 9.2 for details.

9.4 Selection of the drying program

Various drying programs are available in the Halogen Moisture Analyzer. There are four
programs which control the temperature profile. They are:

— Standard drying program
— Fast drying program
— Ramp drying program
— Step drying program

An alternate application possibility lies in the selective determination of the moisture at
different temperatures. Gypsum, for example, releases only its surface water at 50°C,

EN-48 MB120

Sample weight (g)

Time

Automatic
switch-off
(level 30, 60%)

Start

t

m

whereas the water of crystallization cannot be separated until 168°C. With this drying
program, it is thus possible to determine the surface water and the water of crystallization
separately within the same measurement by a controlled temperature profile.

9.5 Selection of the drying time

The Halogen Moisture Analyzer offers two different types of switch-off criteria. A switch-off
criterion is understood to mean the condition which must be met for the Halogen Moisture
Analyzer to switch off automatically and end the drying.

The first type is a timed switch-off. This is used primarily when the drying process does not
attain a constant final value and the sample continuously loses mass over time through
decomposition or the evolution of difficult to volatilize components.

The second type recognizes the end of drying automatically. The integrated balance
continuously determines the weight loss of the sample during drying. If the weight loss per
unit of time is less than the set level, the drying is stopped and the final result is displayed.

Auto Switch Off

The automatic switch-off criterion is divided into three selectable levels:

— A30: Less than 1mg loss in 30 seconds, used for rapidly drying substances.
— A60: Less than 1mg loss in 60 seconds, used for standard samples.
— A90: Less than 1mg loss in 90 seconds, used for slow drying substances (e.g.

plastics).

Auto Free switch-off criterion

The Auto Free switch-off criterion is based on a user defined mean weight loss per unit of
time or weight loss in percent per unit of time. As soon as this drops below the preset value,
the measurement is automatically ended.

Manual

With this switch-off criterion, the measurement process continues until you stop it with the
STOP button. The elapsed time is shown in the display.

Timed switch-off

With this switch-off criterion, the measurement lasts until the preset drying time has elapsed.

9.6 Analysis of the drying profile

In the first type, the drying profile is asymptotic. The amount of moisture lost assumes a
constant value and no longer changes after long drying times. With this drying profile,
repeatable determinations of the moisture content are always simple.

MB120 EN-49

Moisture content (%)

Time

Suitable time
for transfer
of the result

Result

Asymptote

Final value

The sample exhibits thermal
decomposition, the decomposition
products vaporize and the sample
continuously loses weight. Fats, oils,
plasticizers or other volatile
components can lead to
superimposed profiles owing to their
slower vaporization than water. The
difficult to volatilize components lead
to a slow, continuous decrease in
weight.
Measurement results of such a drying
profile can be optimized:

Moisture content (%)

Time

Possible time
for transfer
of the result

Result

Asymptote

Press the Help button on the Home screen
to access the help information menu.

Select Level Assist button to access it.
Please adjust the level feet accordingly.

Press the screen to exit.

The measurement result then corresponds exactly to the constant value of the asymptote. It
is also correspondingly easy to find a suitable switch-off criterion.

In the second type, drying runs quickly at the start and then flattens out. The moisture
content never assumes a constant value. The causes of such a drying profile can be as
follows:

— Lowering the temperature can slow down the decomposition reaction.
— The selection of a suitable switch-off criterion can allow recognition of the end of the

analysis at the desired break point of the drying curve.

— The selection of a constant drying time often provides good measurement results.

— Keep the initial weight of the sample constant (+10%....+20%).

10. HELP INFORMATION

10.1 Level Assist

EN-50 MB120

Press the Help button on the Home screen
to access the help information menu.

Select Temperature Guide to access the
temperature guide.

Press the Set Temperature button to enter
the temperature setting.

Set the temperature. We recommend to not
set it above 200°C.
Press the Ok button to save the temperature
and access to next step.

Follow the instructions to place sample pan,
close housing and tare.

10.2 Temperature Guide

This function allows you to estimate the proper temperature for the sample you want to test.
After the analysis, it will provide a characteristic curve of the sample and some typical curves
will help to define the temperature.

MB120 EN-51

Place a 5g sample and start the analysis

The analysis will take 30 minutes and the
characteristic curve is shown accordingly.

The analysis will finish with a characteristic
curve calibrated by a temperature axis.
Press Temperature Estimate button to
compare the result curve with typical curve
guide.

Press the Back button to check the analysis
result – curve.
Estimate the proper temperature for method
development.

EN-52 MB120

Weight adjustment printout

Temperature adjustment printout

WEIGHT ADJUST EXTERNAL

1.Jan 2016 11:20

Halogen Moisture Analyzer

Type MB120
SNR(Drying Unit) 1234567
SNR(Terminal)

Weight ID
Nominal Weight

50.000 g

Actual Weight

50.000 g
Difference 0.000 g
Cell Temperature 24.35 °C

Adjustment Done

Signature:

..........................................

------------END-----------------

TEMPERATURE ADJUSTMENT

1.Jan.2016 11:25

Halogen Moisture Analyzer

Type MB120
SNR(Drying Unit) 1234567
SNR(Terminal)

Temp Kit ID
Temp1 target 100 °C
Temp1 actual 99 °C
Temp2 target 160 °C
Temp2 actual 161 °C

Adjustment Done

Signature:

[...........................................]

[------------END------------------]

11. PRINTING TEST DATA

Printing data to an external computer or printer requires the communication parameters be
set first.
Printing to an external printer or computer will occur each time the Print button is pressed. If
the Print Interval is set in the Test Menu, printing can occur in a continuous fashion at
specified intervals.

Samples of weight adjustment, temperature adjustment and test data (GLP on and GLP off)
are shown as follows:

MB120 EN-53

Test data printout

Statistics printout

Interval at 30 seconds.

MOISTURE DETERMINATION

Halogen Moisture Analyzer
Type MB120
SNR(Drying Unit) 1234567
SNR(Terminal)
SW(Drying Unit) 1.20
SW(Terminal) 1.01.01

Method Name Method 1
Drying Prog Standard
Drying Temp 105°C
Switch Off A60(1mg/60s)

Start Weight 3.098 g
00:00 min 0.00%MC
00:30 min 9.17 %MC
01:00 min 12.35 %MC
01:30 min 15.28 %MC
02:00 min 21.94 %MC

05:00 min 29:36 %MC
05:21 min 31.94 %MC
Total Time. 05:21 min
End Result . 31.94 %MC
Sample ID:

………………………………….

Signature:

…………………………………

1.Jan.15 15:35

---------------END----------------

--- STATISTICS DATA ---

Halogen Moisture Analyzer
Type MB120
SNR(Drying Unit) 1234567
SNR(Terminal)
SW(Drying Unit) 1.20
SW(Terminal) 1.01.01

Sample Number 6
Last Data 86.23 %MC
Mean Value 87.01 %MC
Standard Deviation 2.06
Minimum Value 83.47 %MC
Maximum Value 88.98 %MC

Signature:

………………………………………

---------------END------------------

Attention: When printing data to OHAUS SF40A printer, please disable the printer setting
“Balance Feature” first.

EN-54 MB120

Command

Character

Description

V

Read SW Version

TIM

Read/Set Current Time

DAT

Read/Set Current Date

1

N/C 2 <–

Date Out (TXD)

3

–>

Date Out (RXD)

4&6

N/C 5

Ground

7

–>

Clear to send (CTS)

8

<–

Request to send (RTS)

9

N/C

11.1 RS232 Command Table

Output Formats

Data output can be initiated in one of two ways:

1. By pressing the Print button;

2. Using the Print Interval feature;

RS232 Commands

All communication is accomplished using standard ASCII format. Only the characters
shown in the following table are acknowledged by the Moisture Analyzer. Invalid
command response "ES" error indicates the Moisture Analyzer has not recognized
the command. Commands sent to the Moisture Analyzer must be terminated with a
Line Feed or carriage return-line line feed (CRLF). Data output by the Moisture
Analyzer is always terminated with a carriage return-line feed (CRLF).

RS232 COMMAND TABLE

11.2 RS232 Pin out

The following table illustrates the pin-out connections on the RS232 connector.

Attention: The RS232 port (COM 1) is located
near the USB device port.

MB120 EN-55

WARNING: Electric Shock Hazard. Disconnect the equipment

from the power supply before cleaning.

Open the cover and remove the pan handle,
sample pan, draft shield, and heat shield from
the instrument before cleaning.

Use a lint-free cloth for cleaning.

Clean the exterior of the instrument and the
drying compartment components with a mild
cleaning agent. Although the housing is
extremely rugged and resistant to solvents,
never use abrasive cleaning agents or
solvents!

Ensure that no liquid enters the interior of the
instrument.

Replace the components after cleaning.

Cleaning Temperature Sensor and Protective
Glass

Check the protective glass and the temperature sensor
for debris which could impede the operation. If the glass
appears dirty, clean the surface facing the compartment
using a commercial glass cleaner. If the sensor is dirty,
clean using a mild cleaning agent.

WARNING: Do not spray the glass cleaner
directly on the glass. Instead, spray it on a
cloth and use the cloth to clean.

Draft Shield

Pan Support

Heat Shield

Pan Handler

Sample Pan

12. CARE AND MAINTENANCE

In this section, you will learn how to keep your Moisture Analyzer in good condition and how
to replace consumable parts.

12.1 Cleaning Interior/Exterior Components

To continue to obtain precise measurements, it is advisable to clean the interior components
at regular intervals. Please note the following instructions for cleaning your instrument.

EN-56 MB120

Removing Glass for Cleaning

If the inside of the glass is dirty, lift up the heating
chamber, release the glass for cleaning by pressing both
sides of the glass holder.

Attention: Caution when releasing the glass from the
glass holder.

Reassemble after cleaning.
WARNING: Do not touch or clean the
Halogen heater.

Cleaning air inlet

The air inlet of the fan is located at the rear of the
instrument and its exterior should be cleaned from time to
time to free it from any dust deposits.

MB120 EN-57

WARNING: Electric Shock Hazard. Disconnect the

equipment from the power supply before cleaning.

Using a test pen, turn the fuse holder to the left
(counterclockwise) and remove the fuse.

Check the condition of the fuse. Replace blown fuse by
those of the same type with the same rated value (6.3A
250VAC for 100-120VAC power supply or 2.5A 250VAC for
200-240VAC power supply according to the heating
element).

Attention: If the fuse is good and power is available at the
outlet, the cord or instrument may be defective. Try a new
cord. If this does not work, the instrument should be sent
back for servicing.

The use of a fuse of a different type or with a different
value, or bridging or shunting the fuse is not allowed and
can possibly cause a hazard to your safety and lead to
instrument damage!

12.2 Replacing Power Line Fuse

If the instrument display fails to light after switching it on, check the power outlet first. If
power is available, and the instrument fails to operate, the power fuse may be open (blown).

12.3 Troubleshooting

Problem: Under load

Probable cause:

-No pan support. Put the pan support in the correct position.

Problem: Over load

Probable cause:

-Too many samples. Try to remove the sample from the sample pan.

EN-58 MB120

Problem: Display remains dark after switching ON.
Probable causes: — No line voltage
— Power cable not connected
— Power line fuse blown
— Instrument faulty

Problem: The measurement takes too long.
Probable cause: — You have selected an unsuitable switch-off criterion. Try
experimentation to arrive at a suitable switch-off criterion.

Problem: The instrument does not heat following the start up.
Probable cause: — The dryer is overheated and the thermal overload protection has
responded. For safe operation, the instrument is equipped with a
duplicate overheating protection device: The dryer unit has a
thermal overload protection device which switches off the heating
element. Contact your OHAUS dealer.

Problem: The measurements are not repeatable.
Probable causes:
— The samples are not homogeneous, i.e. they have different

compositions. The more inhomogeneous a sample, the larger the
amount of sample needed to obtain a repeatable result.

— You have selected a drying time that is too short. Extend the drying time

or select a suitable switch-off criterion “Weight loss per unit of time”.

— The sample does not come completely dry (e.g. owing to skin

formation). Dry the sample on quartz sand.

— You have selected a temperature that is too high and the sample has

oxidized. Lower the drying temperature.

— The sample boils and the splashed drops continuously change the

weight. Lower the drying temperature.

— Insufficient heating power as the protective glass is dirty. Clean the

protective glass.
— The temperature sensor is contaminated or faulty. Clean the
temperature sensor.
— The support on which the instrument is standing is not stable. Use a

stable support.
— The surroundings are very unstable (vibrations etc.).

12.4 Error detection

The Moisture Analyzer utilizes an audio tone to indicate an error. A normal button press or
entry results in a short, high pitched tone. When an entry is incorrect or an improper button is
pressed, a low pitched tone is emitted. There are no system error codes shown on the
displays under these conditions.

MB120 EN-59

Description Ohaus Part No.

Reusable Sample Pan 80252478
Security Locking Cable 80850043
Printer SF40A 30045641
Sample Pans 90mm diameter 80850086
Glass Fiber Pads 80850087
In-use Cover 30284478
Temperature Calibration Kit 11113857

12.5 Service information

If the Troubleshooting section does not resolve or describe your problem, you will need to
contact an authorized Ohaus Service Agent. For Service assistance in the United States,
please call Aftermarket, Ohaus Corporation toll-free at [phone]. An Ohaus Product
Service Specialist will be available to help you.

12.6 Accessories

13. TECHNICAL DATA

13.1 Admissible ambient conditions

Indoor use only
Altitude: Up to 4000m
Temperature range: 10 ºC to 40 ºC
Atmospheric humidity: Maximum relative humidity 80% for temperatures up to 31 °C
decreasing linearly to 50% relative humidity at 40 °C.
Warm-up time: At least 30 minutes after connecting the instrument to the
power supply; when switched on from standby-mode, the
instrument is ready for operation immediately.
Voltage fluctuations: Mains supply voltage fluctuations up to ±10% of the nominal
voltage
Over voltage category: II
Pollution degree: 2
Power load: Max. 450 W during drying process
Power supply voltage: 100V – 120 VAC 5A 50/60 Hz or
200V – 240 VAC 2.5A 50/60 Hz
(depending on the model)
Power line fuse: 6.3A 250 VAC for 100V-120VAC power supply or

2.5A 250VAC for 200V-240VAC power supply according to the
heating element.

EN-60 MB120

Model

MB120

Capacity

120

Readability

0.01%/0.001g

Repeatability (Std Dev) (g)

0.05% (3g sample)

0.015% (10g sample)

Moisture range

0.01% to 100%

(0.01% to 1000% for regain mode)

Heating Element

Halogen

Drying Programs

Standard, Fast, Ramp, Step

Temp range

40°C - 230°C

Switch-off Criteria

Timed, Auto(30, 60, 90 seconds), Autofree mg/s, Autofree %/s,

manual

Adjustment

External adjustment mass - 50g

Power

100V – 120 VAC 5A 50/60 Hz or 200V – 240 VAC 2.5A 50/60 Hz

Operating temperature range

50° to 104°F / 10° to 40°C

Display type

4.3’, QVGA, TFT touch screen

Display results

%moisture, %solids, %regain, time, temperature, weight, method
name, drying curve and statistics

Pan size (mm)

90

Interface

RS232, USB host, USB device,

Adjustable Feet and Level

Yes

Dimensions (WxHxD) (cm)

21x18x35

Net wt. (kg)

5.23

Shipping wt. (kg)

8.35

Marking

Standard

This product conforms to the EMC directive 2004/108/EC, the Low Voltage
Directive 2006/95/EC. The complete Declaration of Conformity is available
online at www.ohaus.com.

AS/NZS 61000.6.1, AS/NZS 61000.6.3

CAN/CSA C22.2 No. 61010-1, UL Std No. 61010-1

13.2 Specifications

14. COMPLIANCE

Compliance to the following standards is indicated by the corresponding mark on the product.

MB120 EN-61

In conformance with the European Directive 2002/96/EC on Waste Electrical and
Electronic Equipment (WEEE) this device may not be disposed of in domestic
waste. This also applies to countries outside the EU, per their specific
requirements.

The Batteries Directive 2006/66/EC introduces new requirements from
September 2008 on removability of batteries from waste equipment in EU
Member States. To comply with this Directive, this device has been designed for
safe removal of the batteries at end-of-life by a waste treatment facility.

Please dispose of this product in accordance with local regulations at the
collecting point specified for electrical and electronic equipment.

If you have any questions, please contact the responsible authority or the
distributor from which you purchased this device.

Should this device be passed on to other parties (for private or professional use),
the content of this regulation must also be related.

For disposal instructions in Europe, refer to www.ohaus.com/weee
Thank you for your contribution to environmental protection.

FCC 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.
Please note that changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.

Industry Canada Note

This Class A digital apparatus complies with Canadian ICES-003.

ISO 9001 Registration

In 1994, Ohaus Corporation, USA, was awarded a certificate of registration to ISO 9001 by
Bureau Veritus Quality International (BVQI), confirming that the Ohaus quality management

system is compliant with the ISO 9001 standard’s requirements. On May 21, 2009, Ohaus

Corporation, USA, was re-registered to the ISO 9001:2008 standard.

Disposal

EN-62 MB120

APPLICATION DISCLAIMER:

— Moisture determination applications must be optimized and validated by the
user according to local regulations. Application specific data provided by
Ohaus is provided for reference purposes only.
Ohaus waives all liability for applications based on this data.

Method Code

Sample Name

Sample

Size

Prep.Method

Heating Profile

Shut-off

Criteria

Time

%MC

Dry Food Ingredients

ZZ1001

Flour

3 g

as is, well mixed

fast, 105°C

A60

5 min

13.10

ZZ1002

Corn meal

3 g

as is, well mixed

fast, 120°C

A60

4:30 min

10.45

ZZ1003

Corn starch

3.5 g

as is, well mixed

standard, 123°C

A60

8 min

12.60

ZZ1004

Breadcrumbs

4 g

as is, well mixed

standard, 135°C

A60

10 min

7.71

ZZ1005

Cocoa powder

3 g

as is, well mixed

standard, 140°C

A60

4:30 min

5.45

ZZ1006

Powdered milk

3g

as is, well mixed

fast, 100°C

Timed

5 min

5.68

ZZ1007

Instant coffee

3 g

as is, well mixed

standard, 154°C

A30

2:30 min

2.56

Finished Baked/Fried Foods

ZZ2001

Cake

3 g

uniform mix of crumb

step, 140°C 3
min,110°C 4 min

A30

8 min

19.04
ZZ2002

Cracker

3 g

grind uniform crumb

fast, 76°C

A60

4:30 min

1.42

ZZ2003

Potato chip

3 g

small pieces

standard, 150°C

A30

3 min

1.83

ZZ2004

Roasted peanuts

3 g

grind,15 sec.

standard, 128°C

Timed

5 min

2.24

Misc. Foods

ZZ3001

Carrot

3 g

shredded

step, 190°C 3
min,120°C 3 min

A30

30 min

87.06

ZZ3002

Fruit juice
concentrate

3 g

as is

step, 185°C 4min,
145°C

A60

15 min

92.92

ZZ3003

Wet vegetables
(spinach)

5 g

small pieces

step, 195°C 7 min,
150°C 1 min, 105°C

A30

30 min

93.74
ZZ3004

Dehydrated
vegetables

2 g

as is

fast, 125°C

A30

4 min

7.98

ZZ3005

Dried herbs

1 g

small pieces

standard, 160°C

A30

2:30 min

10.20

ZZ3006

Snack pudding

2 g

sandwich between
pads

step, 180°C 3
min,120°C 3 min

A30

15 min

78.08
ZZ3007

Creamy salad
dressing

3 g

spread on glass pad

step, 190°C 3
min,120°C 7 min

Timed

10 min

23.23

ZZ3008

Lowfat salad
dressing

2 g

sandwich between
pads

fast, 170°C

1mg/40s

9:30 min

49.66
ZZ3009

Butter

3 g

spread on glass pad

step, 180°C 2min,
130°C

A60

14:30
min

14.81
ZZ3010

Processed cheese

3 g

sandwich between
pads

step, 180°C 7min,
170°C

A30

20 min

57.00

ZZ3011

Ketchup

1 g

sandwich between
pads

step, 180°C 10min,
120°C 2min

A60

14 min

70.34

ZZ3012

Salt

10 g

as is

standard, 200°C

Timed

4 min

0.05

ZZ3013

Powdered rock
candy

5 g

as is

standard, 145°C

A60

1:30 min

0.07
ZZ3014

Brown powdered
sugar

5 g

mix with sand

standard, 135°C

A60

15:30
min

6.15

Animal Feed/Grains

ZZ4001

Pelleted pet food

5 g

grind,30 sec.

fast, 121°C

Timed

4 min

8.43

ZZ4002

Cracked corn

5 g

grind,30 sec.

fast, 158°C

Timed

4 min

16.44

ZZ4003

Rye seed

5 g

grind,45 sec.

fast, 140°C

Timed

4 min

10.51

Personal Care

ZZ5001

Liquid hand soap

1 g

spread thin on pad

step,190°C 3
min,130°C 1 min

A30

6 min

83.57
ZZ5002

Soap

2 g

shaved thin into dish

standard, 160°C

A30

4:30 min

20.83

ZZ5003

Toothpaste

1 g

spread thin on pad

fast, 125°C

A30

4 min

37.43

ZZ5004

Skin cream

1 g

spread thin on pad

step, 190°C 3 min,
145°C 8 min, 145°C

A30

12 min

87.11

ZZ5005

Stick deodorant

2 g

shaved thin into dish

standard, 190°C

A30

14 min

92.40

ZZ5006

Powdered
detergent

3 g

as is

standard, 110°C

A30

3 min

3.27

Misc.

ZZ6001

Latex paint

1 g

sandwich between
pads

fast, 170°C,

A60

4:30 min

44.91
ZZ6002

Wood glue

1 g

spread thin on pad

standard, 160°C

A30

12 min

68.51

A1. APPLICATION EXAMPLES

This appendix includes a table indicating problems specific to various substances and their
possible solution. The samples were selected so that representatives of many material
classes are considered. For the solution to your specific problem, a substance similar to your
sample can be selected from the list.

TABLE A-1 COMPILATION OF APPLICATIONS WITH THE OHAUS MOISTURE ANALYZER

Ohaus Corporation
7 Campus Drive
Suite 310
Parsippany, NJ 07054 USA
Tel: [phone],
Fax: [phone]

www.ohaus.com

With offices worldwide.

*30241176*

P/N 30241176 E © 2017 Ohaus Corporation, all rights reserved.
Printed in China