MB2325 User Manual - Data Support Company
Contents
1. 00 10 0 0 MC 00 20 0 0 MC Printed at successful end of test Printed at successful end of test Elapsed Time 00 02 21 Printed at successful end of test Initial Weight 8 560 g Printed at successful end of test Final Weigh 8 555 g Final Result 0 0 MC AAAAAAAAAAAAAAAAAAAANAAAA Compliance Compliance to the following standards is indicated by the corresponding mark on the product Marking Standard This product conforms to the EMC directive 2004 108 EC and the Low Voltage Directive C lt 2006 95 EC The complete Declaration of Conformity is available from Ohaus Corporation eo AS NZS4251 1 Emission AS NZS4252 1 Immunity K i CAN CSA C22 2 No 61010 1 04 UL Std No 61010A 1 C US Disposal 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 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 Thank you for your contribution to environmental protection For disposal instructions in Europe refer2. Sugar containing substances Samples containing large amounts of sugar tend to caramelize Ensure that a thin and uniform layer is applied and a moderate temperature selected The sample can also be covered with a glass fiber filter that improves reproducitility The following substances present risk of fire explosion damage or injury Should there be any uncertainty regarding the safety of a substance always perform a careful risk analysis In such cases never leave the Analyzer unattended Volatile substances With volatile samples rapid application of the sample on the test pan is advisable to limit the moisture from escaping before the initial weight is recorded These substances also include samples treated with solvents and substances which contain solvents or release flammable or explosive vapors Work at drying temperatures low enough to prevent the formation of flames or an explosion Always work with small samples maximum 19 Poisonous and toxic substances Substances which contain toxic or caustic components should only be dried in a fume hood Corrosive substances Substances which release corrosive vapors when heated e g acids should be tested in small amounts The vapors can condense on the Analyzer parts causing corrosion 5 MAINTENANCE Weight Calibration Weight calibration is rarely required Moisture analyzers use relative weight values to determine the results so a minor offset from the absolute weight has lit
3. Another way to determine the sample weight is to use the relation between sample weight and repeatability as shown in the following table If requiring repeatability results better than 0 3 for example the table indicates that a sample weight of at least 2g will be needed Sample Weight Repeatability Sample Preparation Samples must always be uniform and representative of the total amount to obtain accurate and reproducible results When preparing samples it is essential to ensure thin and uniform distribution of the sample on the test pan i e avoid piling and excessive amounts Types of Samples Pasty fat containing and melting substances Use a glass fiber filter to increase the surface area of these types of samples e g butter The moisture in these substances is more uniformly distributed through the filter The increased surface area results in faster and more complete vaporization of the moisture EN 6 MB23 MB25 Liquid substances Liquids e g dispersions tend to form drops on the test pan which prevents rapid drying Use of a glass fiber filter shortens the drying time significantly as the filter distributes the liquid sample over a larger surface area Skin forming and temperature sensitive substances Formation of a film on the surface of these samples can prevent complete determination of moisture Using a glass fiber filter to cover the sample allow gentler and more beneficial heating improving reproducitility
4. Set v Short or long press Decreases the value of the time setting Tare Short press Accepts the blinking value and returns to Weigh mode Start Short press Exits Edit mode without saving changes Note After 5 seconds of no activity the blinking setting is automatically saved and the mode returns to Weigh Run Mode Performing a Test A moisture determination test is initiated The results in progress are displayed Start Short press Activates Run mode initiates test with a sample greater than 0 5 g 9 Changes the unit of the displayed result weight grams gt Moisture gt Solids Stop Short press Manually stops the test in progress Print Sends the current displayed value to the RS232 Result Mode At the end of the test Run Mode the display blinks the test result 9 Changes the unit of the displayed result weight grams gt Moisture gt Solids Tare Exits to Weigh mode Print Sends the current displayed value to the R8232 How to Prepare a Test Moisture determinations can be made very simply The three steps are 1 Setting the drying temperature see Section 3 2 Setting the drying time and see Section 3 3 Preparing the sample to be tested e Place the Pan Handler with empty test pan on the Pan Support see Section 2 e Press Tare to zero out the pan weight e Remove the test pan and place the test sample onto the test pan The sample must be greater than 0 5g e Spread the sample evenly a
5. ascertain the optimal setup of these parameters e Drying temperature Drying time Sample weight Sample preparation Type of sample Drying Temperature e The drying temperature exerts a controlling influence on the drying time e g a low temperature can prolong the drying time unnecessarily e Select a drying temperature that neither decomposes nor changes the chemical structure of the sample e Some samples can give off different amounts of moisture at different drying temperatures In these cases deviations can be compensated by changing the drying temperature Drying Time This analyzer has three methods to establish the drying time e Manual where the user stops the test in progress by pressing the Stop button The test must be longer than 30 seconds to be a valid test e Automatic which ends the drying process when detecting less than 1mg loss in 60 seconds To keep the drying time short select a small sample weight that still maintains the required measurement accuracy e Timed duration where the test ends when the pre set drying time elapses sample Weight The weight of a sample influences the measurement time and repeatability of the results With large amounts of samples more moisture must be vaporized and the process takes longer Generally the sample weight should be between 3g and 20g 3g samples give fast results with some sacrifice in accuracy 20g samples generally give more consistent results but require a longer test time
6. the display 5 Read the thermometer on the Temperature Calibration Kit and press Set4 v to change and match the displayed value to the thermometer reading 6 Press Tare to enter the value The display will show TC160 as the heater turns on again 7 After 15 minutes the unit will beep and blink 160 on the display 8 Read the thermometer on the Temperature Calibration Kit and press Set4 v to change and match the displayed value to the thermometer reading MB23 MB25 EN 7 9 Press Tare to enter the value The Analyzer returns to Weigh mode 10 Temperature calibration is now complete Note If Tare is not pressed within 10 minutes the calibration will be aborted EN 8 MB23 MB25 Cleaning f e Disconnect the Analyzer from the power supply before cleaning the Analyzer S amp S e Make sure that no liquid enters the interior of the Analyzer e Make sure the Analyzer is cooled down before cleaning e Clean the Analyzer at regular intervals Housing surfaces and the temperature A a sensor may be cleaned with a lint free cloth slightly dampened with water or a mild cleaning agent e Glass surfaces may be cleaned with a commercial glass cleaner e Do not use solvents harsh chemicals ammonia or abrasive cleaning agents Protective glass Troubleshooting Symptom Display Remedy Cannot turn on No power to Analyzer _ Verify connections and voltage Weight value blinking Increase sam
7. to www ohaus com weee MB23 MB25 EN 11 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 Industry Canada Note This Class A digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe A est conforme a la norme NMB 003 du Canada 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 15 2003 Ohaus Corporation USA was re registered to the ISO 9001 2000 standard LIMITED WARRANTY OHAUS products are warranted against defects in materials and workmanship from the date of delivery through the duration of the warranty period During the warranty period OHAUS will repair or at its option rep
8. Handler 80252476 Data collection Software SW 12 50g Calibration Weight 51054 16 MB23 MB25 EN 9 6 TECHNICAL DATA Admissible Ambient Conditions Location Indoor use only Temperature 10 C to 40 C Relative humidity 15 to 80 at 30 C non condensing Warm up time At least 15 minutes after connecting the Analyzer to the AC supply when switched from standby mode the Analyzer is ready for immediate use Height above sea level Up to 2000 m Power Input 100VAC 120VAC 3A 50 60Hz or 200VAC 240VAC 3A 50 60Hz Voltage fluctuations 15 10 Power load MB25 250W MB23 300W Maximum during drying process Power line fuse 1 piece 5 x 20mm 8A 250V Protected against dust and water Pollution degree 2 Installation category Class II Specifications MODEL MB23 Capacity 110g Readability requires gt 10g 0 01g 0 1 sample Temperature Settings 50 C to 160 C 5 increments Heat Source Infrared Calibration Weight 500 Calibration Temperature OHAUS Temperature Calibration Kit Pan Size 90mm diameter Unit Dimensions DxWxH 11 0x6 5x5 0 in 28 0x16 5x12 7 cm Unit Weight 4 6 lb 2 1 kg Shipping Dimensions LxWxH 20 2x15 5x13 5 in 51x40x35 cm Shipping Weight 10 Ib 4 5 kg Communication RS232 Pin Connections Female DB9 connector Pin 2 Analyzer transmit line TxD Pin 3 Analyzer receive line RxD Pin 4 and 6 Internally connected Pin 5 Ground signal GND Pin 7 Clear to send hardware handshake CTS Pin 8 R
9. MB23 MB25 EN 1 1 INTRODUCTION Safety Precautions e gt gt Use the Analyzer exclusively for determination of moisture in samples Improper operation of the Analyzer can endanger personnel and cause property damage If the Analyzer is used in a manner not specified in this manual the protection provided may be impaired Verify that the input voltage printed on the voltage identification label information and the plug type matches the local AC power supply The Analyzer has a 3 pin power cable that includes a ground connection Intentionally disabling the equipment grounding connection is prohibited Do not position the Analyzer so that it is difficult to disconnect the Power Plug from the local AC power supply Make sure that the power cord does not pose any obstacle or tripping hazard Do not operate the Analyzer in hazardous wet or unstable environments Disconnect the Analyzer from the power supply when cleaning the Analyzer Ensure sufficient free space around the Analyzer as a safety zone Allow at least 1 meter of free space above the Analyzer The Analyzer must be operated only by trained personnel who are familiar with the properties of the samples being tested and with the equipment operation Use appropriate personal safety equipment such as safety glasses gloves protective clothing and respirators Do not make any modifications to the Analyzer Service should be performed only by authorized personnel For safe a
10. cross the test pan e Place the test pan with the sample on the Pan Support The weight value of the sample will be displayed Section 4 Test Optimization gives hints on determining optimal drying temperatures and times sample sizes and proper preparation of samples How to Perform a Test 1 Close the Heater Cover 2 Press Start to begin the test press Start again to stop the test in progress When the test is over the display will blink showing the final result To change the displayed units press g To print the current displayed value press Print Press Tare to exit to Weigh mode 3 4 5 6 Performing a Trial Test Prior to actual testing a test run can be performed with these suggested seitings 1 Temperature 120 2 Time AUTO 3 Sample 3g of water Place a glass fiber pad included with the Analyzer on the test pan place on Pan MB23 MB25 EN 5 Support Press Tare to zero the pan weight Add 3g of water to the fiber pad 4 Press Start to initiate the test A perfect result on the trial test would be 0g 100 moisture or O solids Results may vary slightly due to weighing errors involved with a small sample or other experimental errors See also Section 4 Test Optimization TEST OPTIMIZATION Moisture is determined from the weight loss of a sample dried by heating The speed and quality of the measurement process will rely on the following parameters Experimentation will also help
11. d Glass Fiber Pad In Use Cover Instruction Manual Pan Support Sample Pan Handler MB25 only Power Cable Selecting the Location e Operate the Analyzer on a firm level surface e Select a location that is safe and with adequate ventilation Fire corrosive or toxic fumes and other hazards associated with the test samples will require specially prepared locations e Ensure that the location has easy access to the local AC power supply e Avoid locations with rapid temperature changes excessive humidity air currents vibrations electromagnetic fields heat or direct sunlight Installing Components A g 1 Install and position Draft Shield 2 Install Pan Support turn until it Optional Sample Pan Handler engages into position Slide an empty sample pan under the pan handler then place over the pan support Connecting Power i a his Verify that the input voltage printed on the voltage identification label m information and the plug type matches the locations AC power supply iil Connect the supplied power cable to the power input receptacle at the rear f a SAE of the Analyzer and into a properly grounded power outlet Power On short press Off Standby Mode long press When powered on from standby mode the Analyzer is ready for immediate use See also Section 1 Safety Precautions After connecting the Analyzer to the AC supply standby mode allow the Analyzer to warm up for at least 15 minutes for bes
12. equest to send hardware handshake RTS RS232 Data Settings default Baud Rate 2400 Data Bits 7 Parity N Stop Bits 2 Flow Control Xon Xoff RS232 Commands The RS232 Interface allows a computer to control the Analyzer as well as to receive data such as displayed weight Command Function ON Turns Analyzer ON OFF Turns Analyzer OFF T Same as pressing Tare U Same as pressing g START begins a test STOP ends a test P Same as pressing Print xP Interval Print x Print Interval 1 3600 sec PSN Print Serial Number PV Print software version Print Header H Header on or off RS Print current RS232 settings EN 10 MB23 MB25 Change RS232 setting The current RS232 setting can be displayed on the LCD by pressing Print for 2 seconds while in standby mode Baud 1200 2400 4800 9600 19200 Data Bits 7 or 8 Parity N none O odd E even Stop Bits 1 or 2 Handshake X xon xoff software R RTS CTS hardware N none The Analyzer will return ES for invalid commands All communication uses standard ASCII format Sent commands must terminate with a Line Feed or Carriage Return Line Feed CRLF RS 2400 7 N 2 RS232 Output AAAAAAAAAAAAAAAAAAAAANANAN MOISTURE Header on DETERMINATION Header on OHAUS MBe2x SN Header on HHHHHHHHH Header on Switchoff Mode TIMED 10 00 Header on Drying Temp 100C Result Units Moisture If Print pressed or print interval set If Print pressed or print interval set
13. lace any component s that proves to be defective at no charge provided that the product is returned freight prepaid to OHAUS This warranty does not apply if the product has been damaged by accident or misuse exposed to radioactive or corrosive materials has foreign material penetrating to the inside of the product or as a result of service or modification by other than OHAUS In lieu of a properly returned warranty registration card the warranty period shall begin on the date of shipment to the authorized dealer No other express or implied warranty is given by OHAUS Corporation OHAUS Corporation shall not be liable for any consequential damages As warranty legislation differs from state to state and country to country please contact OHAUS or your local OHAUS dealer for further details
14. le size Tare shown Press Tare Close Cover shown Cover needs to be closed before starting test Close Cover Poor accuracy Perform calibration Unstable environment Move the Analyzer to suitable location Cannot calibrate Move the Analyzer to suitable location Incorrect calibration masses Use correct calibration masses Err 7 0 Err 8 1 Remove weight from pan support Err 8 2 Install Pan Support Err 8 3 Remove weight from the Pan Support Err 8 4 Re install Pan Support Err 9 5 Factory calibration data corrupted Contact the authorized dealer Err 53 EEPROM Checksum error Contact the authorized dealer Service Information lf the troubleshooting section does not resolve or describe your problem contact your authorized OHAUS service agent Please visit our web site www ohaus com to locate the OHAUS office nearest you Accessories Description Part No Description Part No Security Locking Cable 76288 01 STP103 Thermal Printer US 80251992 Security Lock Kensington type 470004 010 STP103 Thermal Printer EU 80251993 Temperature Calibration Kit 11113857 STP103 Thermal Printer UK 80251994 Sample Pans 50 Box 80850086 CBM910 Impact Printer JP 80252041 Pads Glass Fiber 200 Box 80850087 CBM910 Impact Printer US 80252042 Reusable Sample Pans 3 pk 80850088 CBM910 Impact Printer EU 80252043 Reusable Deep Sample Pans 3 pk 80252479 Cable STP103 80252581 Reusable Wire Cage 80252477 Cable CBM910 80252571 Sample Pan
15. nd dependable operation of this moisture Analyzer please comply with the following safety precautions The Moisture Analyzer works with heat Never place flammable materials on below or next to the Analyzer Use caution when removing atest sample The sample the sample chamber the heating element and the surrounding areas may be very hot and can cause burns some samples require special care Should there be any uncertainty regarding the safety of a substance perform a careful risk analysis In such cases never leave the Analyzer unattended Fire or explosion Substances which contain solvents or release flammable or explosive vapors when heated With such samples work at drying temperatures low enough to prevent the formation of flames or an explosion Poisoning or burning Substances which contain toxic or caustic components should only be dried in a fume hood Corrosive Substances which release corrosive vapors when heated should be tested in small amounts The user assumes responsibility for any damage caused by the use of these types of samples Application Disclaimer m Moisture determination applications must be optimized and validated by the user according to local regulations Application specific data provided by OHAUS is for reference purposes only OHAUS waives all liability for applications based on this data EN 2 MB23 MB25 2 INSTALLATION Package Contents Moisture Analyzer 50 Sample Pans Draft Shiel
16. nk Time Short press Enters Edit mode for the time setting the value will blink Start Short press Activates Run mode initiates test with a sample greater than 0 5 g Cal Long press Initiates weight or temperature Calibration see Section 5 Maintenance Temperature Time Edit Mode Preparing a Test Temperature editing 50 to 160 C in 5 steps Temp Short press Enters Edit mode for the temperature setting the value will blink Set 4 Short or long press Increases the value of the temperature setting EN 4 MB23 MB25 Set v Short or long press Decreases the value of the temperature setting Tare Short press Accepts the blinking value and returns to Weigh mode Start Short press Exits Edit mode without saving changes Note After 5 seconds of no activity the blinking setting is automatically saved and the mode returns to Weigh Time editing 1 to 60 minutes in 30 second steps 61 to 99 minutes in 1 minute steps The time parameter can be set to timed duration or AUTO the test ends when the Analyzer detects the weight loss has ended Selecting AUTO or timed duration Time Short press Enters Edit mode for the time setting the value will blink Time Short press While the time setting is blinking toggles between AUTO and a time value Tare Accepts the blinking setting lf AUTO is selected Weigh mode is entered lf time duration is selected Set 4 Short or long press Increases the value of the time setting
17. t results MB23 MB25 EN 3 3 OPERATION Display A A Stable indicat T ff F D img l a J F p A P i fi ji AO im ne a moisture 100 Temperature setting or current chamber temperature Celsius 10 00 Time setting minutes seconds Controls On short press Off ff long press Start Stop short press Back short press Tare short press Decrease value Tare short press S aal Increase value short or long press Start Stop Enter Accept value short press short or long press Print short press Temperature Setting short press a Print Cal T T E Time Setting short press Result Unit short press There are also several modes of operation which affect how LEXI button operates Please refer to the following section Operating Modes Standby Mode When the Analyzer is connected to AC power and the display is off the unit is in Standby mode Start Short press Turns on the display and enters Weigh mode Print Long press Displays the RS232 settings see Section 6 RS232 Data Connection Thereafter Short press Re enters Standby mode off Weigh Mode The display shows the weight of items placed on the pan support Tare Short press Sets the displayed weight value to zero Start Long press Enters Standby mode Off The following operations can be initiated Temp Short press Enters Edit mode for the temperature setting the value will bli
18. tle effect on accuracy OHAUS moisture analyzers have rugged high quality temperature stabilized weighing modules that retain their calibration over long periods of time 1 Remove any load on the Pan Support including the sample pan 2 Press and hold Cal while in the Weigh mode CAL will appear followed by 50 009 3 Place a 50g calibration mass on the Pan Support The display will show 4 Remove the mass when 0 is shown on the display The display will show l 5 The Analyzer will return to Weigh mode when calibration is complete Note Pressing START will cancel the calibration without saving the changes Temperature Calibration Temperature calibration is rarely required under normal use If the heating elements become dirty the usual setting may no longer produce the same results A temperature calibration can correct for these changes Use only the OHAUS Temperature Calibration Kit accessory to perform temperature calibration Damage to the Analyzer can occur if using other methods 1 Remove the Pan Support Err8 4 must be shown on the display for the temperature calibration to start 2 Place the OHAUS Temperature Calibration Kit into the temperature chamber see Kit Instructions Close Cover 3 Press and hold Cal until Cal is displayed When Cal is released TC100 will appear and the heater turns on 4 After 15 minutes the unit will beep and blink 100 on
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