OHAUS MB120 Instruction Manual
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OHAUS MB120 Instruction Manual

Moisture analyzer
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MB120 Moisture Analyzer

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  • Page 1 Instruction Manual MB120 Moisture Analyzer...

  • Page 3: Table Of Contents

    Table of Contents GETTING TO KNOW YOUR MOISTURE ANALYZER ..............1 Introduction ..........................1 Overview of the Moisture Analyzer ..................1 What is a Moisture Analyzer? ....................1 SAFETY INFORMATION ......................... 2 2.1 Definition of Signal Warnings and Symbols .................. 2 2.2 Product Specific Safety Notes .......................
  • Page 4 EN-2 MB120 6.5.5 Software update ........................30 Instrument info and Help ......................31 6.6.1 Instrument info ........................31 6.6.2 Help ............................31 METHOD LIBRARY ........................32 Use of the method library ....................... 32 7.1.1 Method load, edit and delete ..................32 7.1.2...
  • Page 5 MB120 EN-3 12.1 Admissible ambient conditions ....................63 12.2 Specifications ......................... 64 COMPLIANCE ........................... 64 APPLICATION EXAMPLES......................62...
  • Page 6 Overview of Controls Turns On or Off display. When pressed, sends Print command. When pressed, either starts or stops the drying process. When pressed, performs Tare function. Leveling indicator Leveling Feet Used to level the Moisture Analyzer.

  • Page 7: Getting To Know Your Moisture Analyzer

    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.

  • Page 8: Safety Information

    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. SAFETY INFORMATION 2.1 Definition of Signal Warnings and Symbols Safety notes are marked with signal words and warning symbols.

  • Page 9: Product Specific Safety Notes

    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.
  • Page 10 EN-4 MB120 Use appropriate gloves when handling chemicals or hazardous substances, checking their integrity before use. Safety Notes 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.

  • Page 11: Installation

    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.

  • Page 12: Installing The Tray Pan, Draft Shield And Pan Support

    EN-6 MB120 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. Installing the Tray Pan, Draft Shield and Pan Support Lift the cover straight up and Install the tray pan in the base of the heating chamber.

  • Page 13: Connecting To A Power Supply

    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).

  • Page 14: Making A Simple Measurement

    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.
  • Page 15 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 five displays available when the Moisture Analyzer is running a test.

  • Page 16: Menu

    EN-10 MB120 MENU The Home screen appears after the moisture analyzer has been switched on. 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.

  • Page 17: Setup

    MB120 EN-11 Setup Press the Setup button to access the Setup menu. Help Information Press the Help button to access the Help menu. SETUP The setup menu is activated by pressing the Setup button. The menu contains: weight and temperature adjustment, user settings, device settings, user management, system and data management, instrument info and Help.

  • Page 18: Temperature Adjustment

    EN-12 MB120 To adjust the analyzer, proceed as follows: 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 adjustment menu. Press Back to return to previous step.
  • Page 19 MB120 EN-13 Press Setup button to access the adjustment menu. 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.

  • Page 20: Weight Adjustment Record

    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.

  • Page 21: Temperature Adjustment Record

    MB120 EN-15 6.1.4 Temperature adjustment record 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.

  • Page 22: Brightness

    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.

  • Page 23: Sound

    MB120 EN-17 Press the Brightness button. Adjust the brightness of the screen to desired level. 6.2.3 Sound 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.

  • Page 24: Device Settings

    EN-18 MB120 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.

  • Page 25: Peripherals

    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. 6.3.2 Peripherals This Moisture Analyzer is equipped with USB and RS232 compatible interfaces for communication with USB storage devices, printers and computers.
  • Page 26 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.

  • Page 27: Print

    MB120 EN-21 Set the Handshake Select the desired handshake to NONE, Xon/Xoff. Default setting is NONE. 6.3.3 Print 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.

  • Page 28: Glp And Gmp Data

    EN-22 MB120 6.3.4 GLP and GMP Data 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.

  • Page 29: User Management

    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.
  • Page 30 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.
  • Page 31 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.

  • Page 32: System And Data Management

    EN-26 MB120 Press User 1 to switch to other user account. Press Login to login System and data management 6.5.1 Export and import settings and methods Press the Setup button to access Setup menu. Press Back to return to Home screen.
  • Page 33 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.

  • Page 34: Backup And Restore

    EN-28 MB120 6.5.2 Backup and restore Press Backup and restore to backup or restore the system settings. 6.5.2.1 Backup system Press Backup system on USB flash drive to back up the system. Press Back to previous step. Press Back to return to previous step.

  • Page 35: Export Event Logs

    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.

  • Page 36: Factory Reset

    EN-30 MB120 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...

  • Page 37: Instrument Info And Help

    MB120 EN-31 Instrument info and Help 6.6.1 Instrument info Press Instrument info to view the information of the moisture analyzer. You can view Instrument type, Terminal Software, Drying unit software and SNR information. 6.6.2 Help Press Help to access the help information menu.

  • Page 38: Method Library

    EN-32 MB120 Press the screen to exit. METHOD LIBRARY This section contains information on the use of the Method Library which will enable you to set the actual method parameters such as Drying Program, Drying temperature, Switch-off criterion, Display mode, Start weight, Starting mode and the use of Method Library.

  • Page 39: Method Export And Import

    MB120 EN-33 7.1.2 Method export and import 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.

  • Page 40: Method Parameters (Drying Parameters)

    EN-34 MB120 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. Method parameters (drying parameters) 7.2.1 Drying program The drying program (profile) contains four settings, Standard, Fast, Ramp and Steps.

  • Page 41: Drying Temperature

    MB120 EN-35 Step Profile For STEP 1, use the defined temperature and time. Repeat the above procedure for step 2 and Final step. 7.2.2 Drying temperature The drying temperature can be set from 40 °C to 230 °C. Press the Drying Temperature button to access the temperature setting menu.
  • Page 42 EN-36 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.

  • Page 43: Display Mode

    MB120 EN-37 Enter the time (5 seconds to 300 seconds). Free (% / s) Enter the weight loss (0.01% to 5.00%). Enter the time (5 seconds to 300 seconds). 7.2.4 Display mode Display mode (Display result) offers you the choice of whether your display indicates % MC, % DC, % RG or grams during the measurement process.

  • Page 44: Start Weight

    EN-38 MB120 7.2.5 Start weight Start weight is used when previous samples have been tested and the Start weight is known. A consistent sample size is required when using Start weight. Select the Start weight. Enable the Start weight and press the ON button.

  • Page 45: Starting Mode

    MB120 EN-39 The check weighing bar indicates the sample weight. 7.2.6 Starting mode In this menu you can define if the instrument should perform certain functions automatically or manually. Press the Starting mode button. Automatic This mode can be used for most kinds of samples.

  • Page 46: Method Creation

    EN-40 MB120 Method creation 7.3.1 Create using SmartGuide SmartGuide helps you to find a method with optimal drying temperature automatically. You can use this function with or without a reference moisture value. To start, press Method library on the Home screen.
  • Page 47 MB120 EN-41 Press the Next button. Press Without reference moisture value if you do not have a reference moisture value. Press With reference moisture value if you have a reference moisture value. 7.3.1.1 Without reference moisture value If you select Without reference moisture value, follow the on-screen instruction to finish the analysis process.
  • Page 48 EN-42 MB120 Enter either a method name or identifying number and press the OK button. Press the Save button to save the method. 7.3.1.2 With reference moisture value If you select With reference moisture value, input a reference moisture value and press the OK button.
  • Page 49 MB120 EN-43 At this stage, you will see the Optimize button. Press this button to optimize your origianl result if you need. It is recommended to run the "Optimize" process in order to get a better heating method. Follow the on-screen instruction to finish the optimization process.

  • Page 50: Create Method Manually

    EN-44 MB120 7.3.2 Create method manually Press Method library on the Home screen. The method library is displayed. Press the New… button. Press Create method manually. Enter either a method name or identifying number and press the OK button. Press each selection to set desired values.

  • Page 51: Results

    MB120 EN-45 After change the settings, the Save button available. Press Save to save to default method. RESULTS This section contains the management and evaluation of measurement results. 8.1 Test results Press the Results button on the Home screen to access the results menu.
  • Page 52 EN-46 MB120 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.
  • Page 53 MB120 EN-47 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.

  • Page 54: How To Obtain The Best Results

    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. The Ohaus Moisture Analyzer comprises two instruments: a precision balance and a dryer unit. In contrast to other 160°...

  • Page 55: Sampling And Sample Preparation

    MB120 EN-49 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.
  • Page 56 EN-50 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.
  • Page 57 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: —...

  • Page 58: Selection Of The Drying Temperature

    EN-52 MB120 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.

  • Page 59: Selection Of The Drying Program

    MB120 EN-53 For MB120, OHAUS provides a temperature guide to estimate the proper temperature for reference. Please see section 9.2 for details. Selection of the drying program Various drying programs are available in the Halogen Moisture Analyzer. There are four programs which control the temperature profile.

  • Page 60: Selection Of The Drying Time

    EN-54 MB120 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.
  • Page 61 MB120 EN-55 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. Moisture content (%) Asymptote Final value Result Suitable time Time for transfer of the result In the second type, drying runs quickly at the start and then flattens out.

  • Page 62: Printing Test Data

    EN-56 MB120 10. 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.
  • Page 63 6.873 g Moisture Content 3.225 g End Result 31.94 %MC Note Signature: ……………………………………… Measurement end 19.Dec 201715:35 -----------------------END-------------------- Note: if you connect the moisture analyzer with OHAUS SF40A printer, we suggest you to close the printer's balance function in its settings.

  • Page 64: Rs232 Command Table

    EN-58 MB120 10.1 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.

  • Page 65: Care And Maintenance

    MB120 EN-59 11. CARE AND MAINTENANCE In this section, you will learn how to keep your Moisture Analyzer in good condition and how to replace consumable parts. 11.1 Cleaning Interior/Exterior Components To continue to obtain precise measurements, it is advisable to clean the interior components at regular intervals.
  • Page 66 EN-60 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.

  • Page 67: Replacing Power Line Fuse

    MB120 EN-61 11.2 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).

  • Page 68: Error Detection

    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: —...

  • Page 69: 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 (800) 526-0659. An Ohaus Product Service Specialist will be available to help you.

  • Page 70: Specifications

    This product complies with the applicable harmonized standards of EU Directives 2011/65/EU (RoHS), 2014/30/EU (EMC) and 2014/35/EU (LVD). The EU Declaration of Conformity is available online at www.ohaus.com/ce. This product complies with the EU Directive 2012/19/EU (WEEE). Please dispose of this product in accordance with local regulations at the collecting point specified for electrical and electronic equipment.
  • Page 71 MB120 EN-65 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.

  • Page 72: Application Examples

    — 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. TABLE A-1 COMPILATION OF APPLICATIONS WITH THE OHAUS MOISTURE ANALYZER Sample...
  • Page 73 MB120 EN-67 ZZ3018 Mustard 2.5 g spread on glass pad fast, 135°C 6 min 31.51 ZZ3019 Yeast as is standard, 97°C 4 min 4.32 ZZ3020 Spaghetti small pieces fast, 145°C 9 min 11.12 Animal Feed/Grains ZZ4001 Pelleted pet food grind,30 sec.
  • Page 76 Ohaus Corporation 7 Campus Drive Suite 310 Parsippany, NJ 07054 USA Tel: +1 973 377 9000 Fax: +1 973 944 7177 www.ohaus.com With offices worldwide. *30241176* P/N 30241176 © 20 Ohaus Corporation, all rights reserved. Printed in China...

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