(Computrac) MX-100 Moisture Analyzer User`s Manual254263
Contents
1. Default Parameters The following parameters are the factory set default settings Parameter Default Temperature 130 C 266 F Auto start Lower the hood Drying time Automatic shutoff Result mode 0 100 moisture The LCD shows special messages for your information throughout the moisture determination routine After the moisture analyzer has been plugged into a wall outlet the standby symbol appears on the LCD when the moisture analyzer is switched OFF This means the unit is ready to operate without requiring warmup Press the ON OFF key to switch the unit ON or OFF Self Test After the unit is switched ON all LCD segments will briefly light and the unit automatically runs through a self test of the electronic circuitry This self test ends with a readout of the pre set parameters for moisture determination When TAR appears on the LCD the unit is ready for operation and you may begin your moisture determination dry weight determination routine How to Change Parameters To change parameters in order to adapt the moisture analyzer to meet special testing requirements or to utilize the full performance capabilities of the unit select the individual operating parameters either by briefly pressing a function key once or by holding down a function key while simultaneously turning on the unit With the Mode key you can toggle among the readout modes of the computed results during a moisture determination routine2. left hand corner of the LCD press the reset key The Mx 100 is now ready to perform a moisture determination routine Note Ifyou plan to analyze samples sequentially follo wing the first moisture test you do not need to warm up the Mx 100 prior to each of these analyses 10 Running a Test l 5 Place the disposable sample pan on the pan support Press the Enter key TAR will now go out on the LCD and the weight readout 00 000 g appears If a different readout appears the unit must be tared a Press the Reset key TAR appears b Press the Enter key Now place the sample on the sample pan spreading evenly across the surface The moisture test can only begin after the moisture analyzer has been tared and a sample weight greater than 96 mg has been placed on the unit Lower the hood The test procedure starts automatically If you have selected the code for manual start you must press the ENTER key to start the procedure 6 The start of the routine is indicated by an acoustic signal and the drying symbol on the LCD During operation the time and results correspond ing to the mode you have selected will be continuously updated in the LCD The results in the different readout modes can be cycled in the display by pressing the Mode key 11 In the fully automatic drying mode timer setting 0 0 min default setting the moisture determination procedure ends automatically when a significant weig
3. protective disk plate 3 Appendix D Cleaning Maintenance and Calibration Cleaning Do not use any aggressive cleaning agents solvents or similar agents on the outer case or the front panel keypad Instead use a piece of cloth with a mild detergent to clean the moisture analyzer Make sure that no liquid enters the moisture analyzer housing After cleaning wipe down the moisture analyzer with a soft dry lint free cloth Safety Inspection If there is any indication that safe operation of the Computrac Mx 100 moisture analyzer is no longer possible turn off the power and unplug the unit from the wall outlet immediately Lock the moisture analyzer away to ensure that it cannot be used inadvertently Safe operation of the moisture analyzer is no longer ensured when S there is visible damage to the moisture analyzer S the moisture analyzer no longer functions properly S the moisture analyzer has been stored for relatively long periods under unfavorable conditions S the moisture analyzer has been exposed to rough handling during shipment 19 Calibration The calibration routine adjusts sets the sensitivity of the built in weighing system to an accurate weight Materials Required 30 gram calibration weight Procedure 1 Switch the unit OFF 2 Press the T key down while switching the unit ON 3 While all segments of the LCD display are lit simultaneously press both the clock and printer cloc
4. 100 however calculates the weight loss automatically and displays that result on the front panel LCD Automatic In the Automatic mode the Mx 100 monitors weight loss throughout the test As drying proceeds the moisture loss per unit of time continuously decreases When the sample no longer contains moisture the loss per unit of time reaches zero The fully automatic shutoff function recognizes when a considerable weight change is no longer expected The test ends automatically The fully automatic mode is used when the weight loss during drying yields a curve that can be easily evaluated If the weight loss is extremely slow or if the loss is very small as is the case with plastic granules the automatic mode cannot recognize this very low moisture and will not end the test In applications where moisture loss is very slow or where only a small net weight loss is anticipated select the Time mode to end the test at a preset time How to Determine the Moisture Content or Dry Weight Moisture Testing Before the initial moisture determination routine allow the Mx 100 to warm up as follows 1 Raise the hood 2 Tare the Mx 100 without a sample dish on the pan support 3 Place a sample dish on the pan support 4 Lower the hood 5 Press the lt ENTER gt key During the warmup phase prepare your sample 6 After approximately 5 minutes stop the warmup phase by raising the hood Note If TAR does not appear in the upper
5. COMPUTRAC Mx 100 MOISTURE ANALYZER USER S MANUAL June 1997 Arizona Instrument 3375 N Delaware St Chandler AZ 85225 USA 602 470 1414 800 528 7411 Fax 480 804 0656 http www azic com email azi azic com General intl azic com International support azic com Customer Support Part Number 700 0015 Revision Al Computrac Mx 100 User s Manual PROPRIETARY RIGHTS NOTICE The material in this manual contains valuable information developed by Arizona Instrument LLC for use with the Computrac line of moisture analyzers No part of this manual can be reproduced or transmitted in any form or by any means electronic mechanical or otherwise This includes photocopying and recording or in connection with any information storage or retrieval system without the express written permission of Arizona Instrument LLC ALL RIGHTS RESERVED Copyright 1997 Arizona Instrument ii Computrac Mx 100 PACKING and SHIPPING INSTRUCTIONS Movement handling and packaging of the instrument must be done with EXTREME CARE to avoid permanent expensive internal damage UNPACKING Unpack the instrument carefully and set it down gently Select a place where it will be safe from bumping jarring and excessive vibration For all shipments boxes and packing materials are available from AZI Call AZI Customer Service at 800 528 7411 or 602 470 1414 for additional shipping information when returning a unit
6. The result displayed has been calculated according to the equation assigned to the particular mode The program parameters for temperature shutoff time and print interval can be changed by pressing the Reset key TAR will be displayed and the T clock or print timer keys respectively You can then alter the parameters by pressing either the T clock or print timer To store the selected parameter s press the Enter key To leave the parameter selection mode without changing parameters press the Reset key If you would like to store these parameters permanently in the non volatile memory of the moisture analyzer hold down the Enter key At this point the unit will automatically switch itself OFF When the unit is switched ON it will operate according to the previously selected and stored parameters Setting the Temperature 1 Select this mode with the T key Temperatures can be programmed between 40 and 160 C Arrows on the LCD denote the keys which increase or decrease parameters Adjust the temperature setting in increments of five degrees using the T key to increase the temperature or the clock key to decrease it Setting the Time 1 Select this timer mode with the clock key The drying time can be set between 0 0 and 99 min a To increase the time use the T key to decrease the time use the clock key b To increase the time by single digits press the key b
7. for repair Retain all packaging materials for any future shipment of the instrument If the instrument is returned to Arizona Instrument for any reason it must be placed in the original packaging materials which have been tested and proven to be effective protection during shipment iii REPACKING FOR SHIPMENT Pack the Computrac Mx 100 in a Computrac Mx 100 shipping container using the packing figure supplied on the box as a guide If proper shipping materials are not available contact AZI Customer Service at 800 235 3360 or 602 470 1414 to have a set sent to you AZI WILL NOT BE RESPONSIBLE FOR SHIPPING DAMAGE IF YOU RETURN THE INSTRUMENT VIA ANY OTHER SHIPPER THAN FEDERAL EXPRESS YOU SHOULD INSURE IT FOR FULL VALUE iv TABLE OF CONTENTS PACKING and SHIPPING INSTRUCTIONS iv UNPACKING 3 eret woh de Ode RUE es iv REPACKING FOR SHIPMENT V Introduction 4L es ves are e eR Ra 1 Mx 100 Front Panel LCD and Keypad 2 Installation and Set Up Instructions 4 Ambient Conditions 4 Safety Precautions a viet vagina foe RS 5 Leveling the Moisture Analyzer 5 How to Operate the Mx 100 Moisture Analyzer 6 Default Parameters lav eR Sack so 6 Self Test Ga Ue cee ay Sore eee sts 7 How to Change Parameters 7 Setting the Temperature 8 Setting the Time s xus se aep ve aH 8 Start Parameter 2s neo le s Rem 9 C
8. ht loss is no longer detected Note You can interrupt the moisture or dry weight determination routine at any time by raising the hood or by pressing the Reset key 8 The result will remain in the LCD until the Reset key is pressed In addition END will be displayed 9 Once the Reset key has been pressed the moisture analyzer is ready for the next moisture determination routine 12 Appendix A Data Output Specifications The Computrac Mx 100 Moisture Analyzer features an RS 232C SN 24 interface for outputting data on the moisture content or the dry weight of a sample At the interface port you can connect either a standard serial printer for recording operating parameters and results or a computer for evaluation At the start of a moisture analysis routine data for the drying program are automatically output to the interface At the end of a moisture analysis routine the final result is output If the routine is interrupted by raising the hood for example a B appears in the last line of the printout Intermediate results are output during a test either automatically at set intervals or whenever the print timer key is pressed 13 General Specifications Description Type of interface Operation Standard Handshake lines Interface initialization Character coding Transmission rate Parity Synchronization Data output format Specification Serial point to point connection Asynchronou
9. k keys until a number and C are displayed 4 Ifthe disposable sample pan is on the pan support remove it Press T key once more 6 As soon as 30 000 and CAL appear in the display place the 30 g calibration weight on the dish retainer 7 Once the calibration weight is stored the unit will shut off automatically This indicates the end of the calibration procedure CA Arizona Instrument recommends that the Computrac Mx 100 be calibrated on an annual basis by qualified factory service technicians Under some circumstances a qualified technician may perform more frequent calibrations 20 If you have any questions about the Mx 100 this calibration procedure or application development call Arizona Instrument Customer Service at 800 235 3360 or 602 470 1414 Appendix E Application Information For moisture determination the moisture lost is displayed as a percentage of the sample s beginning weight Solids calculations compare the residual sample weight to the sample s beginning weight to calculate the percentage Since moisture is analyzed most often only moisture determination is discussed in the succeeding sections Exact and reproducible moisture testing requires optimum test parameters careful sample handling and preparation and an accurate reliable moisture analyzer The Computrac Mx 100 provides a high degree of flexibility in parameter selection for repeatable and dependable moisture mea
10. onvenience Feature for Weighing Samples a4 vaca ces d at he e Ee 9 Types of Testing Routines 10 dio eC Cm 10 Automatic 14 serves Ced FIG WIES 10 How to Determine the Moisture Content or Dry Weight 2s uet oda SUD M VER 11 Moisture Testing 11 Running a Te6sb sse S es ue ARR 12 Appendix A ved seu ve ryO O Vea eae ERS 14 Data Output Specifications 14 Connecting Electronic Devices 16 StartUp xs ede pa p S ERE WORDS 16 Appendix Boso cepe T RD DUCES 17 Specifications Lacus see ee rabie d 17 Appendix C vessels eu ev ARRA EATUR 19 Error Messages and Troubleshooting 19 Appendix Dy o Ves ue V Red UU 20 Cleaning Maintenance and Calibration 20 Appendix E uas Losses ee EE E Net etd 23 Application Information 23 vi Computrac Mx 100 Moisture Analyzer User s Manual Introduction The Mx 100 Moisture Analyzer is an economical durable moisture analyzer designed for both production floor and quality control applications The Computrac Mx 100 is equipped with an internal balance with a 30 gram sample capacity infra red heater elements electronically controlled between 40 and 160 C and a front panel interface keypad for user programming and testing control The test chamber s hood is lined with reflective panels and holds the tubular infrared heating elements These infrared heating elements provide the heat for moisture evaporation during the te
11. or through parameter entry prior to the start of a test The front panel keypad is protected with a durable overlay to prevent damage to the LCD or the key switches A light touch on the keypad triggers an audible tone to indicate that the keypad has been pressed Depending on the test s parameters additional information such as programmed test temperature elapsed test time time remaining selected display mode current result and an analog display of the sample weight appears in the LCD when any of the keys are pressed Installation and Set Up Instructions Ambient Conditions Choose a suitable location for the Mx 100 Moisture Analyzer The location should be a clean dry area not exposed to vibrations or strong drafts The Mx 100 Moisture Analyzer delivers accurate results even when it is exposed to unfavorable ambient conditions However some points must be addressed to assure the continual safe and accurate instrument life Note The Mx 100 has not been approved for and may not be used in hazardous areas or locations During use the moisture analyzer gives off heat through the mesh on the hood For this reason the mesh must remain uncovered when the unit is in the standby mode and during operation Note After prolonged use the components of the moisture analyzer can be very hot to the touch Therefore exercise caution when operating the unit to avoid burns Do not expose the moisture analyzer to extreme moisture o
12. riefly for each increment c Holding down the key increases the time in increments of ten The moisture determination routine ends when the set time has elapsed for settings starting with 0 1 min A Time setting of 0 0 minutes sets the unit to end automatically Start Parameter To select this parameter switch the moisture analyzer ON while simultaneously pressing the MODE key To change the setting use the T and clock keys T Start with ENTER manual start Clock Start by lowering the hood automatic start Convenience Feature for Weighing Samples l Turn on the moisture analyzer while simultaneously pressing the ENTER key 2 The target weight can be set between 0 and 25g a To increase the target weight press the T key b To decrease the target weight press the clock key c The target weight increases or decreases in single digit increments 3 As a convenience the LCD shows a bar graph to serve as a guide for target weights greater than 1 gram a Ifthe initial sample weight is between 85 8 and 114 4 of the preset value the display prompts to start the moisture determination routine by closing the hood b This convenience feature is not activated for O g the factory setting Types of Testing Routines Time The time mode measures moisture loss over a programmed finite period of time This test is similar to that used in a standard air oven or vacuum oven The Mx
13. s simplex RS 232 C S V24 V28 Clear to Send CTS Data Terminal Ready DTR External print key or Automatic print command 7 bit ASCII 1 200 baud Odd 1 start bit 1 stop bit 22 Characters 21 and 22 Characters CR and LF 14 Interfacing Devices with the Moisture Analyzer RS Interface Make sure that the interface port is electrically connected to the protective grounding conductor of the moisture analyzer housing The cabling supplied as accessory components is shielded and electrically connected on both ends to the cases of the connectors This electrical connection may result in interference caused by cables scraping the floor or by transient currents if you have grounded the housing or connected the protective grounding conductor for line power If necessary connect an equipotential bonding conductor to the moisture analyzer Connecting Electronic Devices Peripherals Unplug the moisture analyzer before you connect or disconnect devices to or from the interface port Startup 1 Raise the hood on the moisture analyzer and position the protective disk plate and the dish retainer on the unit The moisture analyzer rated to Class 1 must be plugged into a properly installed wall outlet which has a protective grounding conductor PE 15 Appendix B Mx 100 LOSS ON DRYING MOISTURE ANALYZER SPECIFICATIONS Test method Heating by infrared rays determination of weight loss Sample weight 30 g ma
14. st cycle Each heating element generates 180 watts of power when the moisture analyzer is operating At the beginning of moisture determination the chamber is fully heated until the set temperature is reached The heat intensity is monitored by the built in resistance temperature sensor and adjusted through feedback to the microprocessor to maintain the chamber at the nominal setting As a safety feature a mechanical interlock within the hood assembly recognizes the hood position to ensure that a routine test cannot begin when the hood is open This same contact also recognizes when the hood has been raised during a moisture test Opening the lid during a test interrupts and cancels the measurement routine Mx 100 Front Panel LCD and Keypad ON ui ODI o EXIm W ENTER computrac Arizona MOISTURE ANALYZER Inst rument The front panel LCD consists of three separate fields and easy to understand symbols Test information such as the sample s current weight or the computed moisture result as well as the elapsed test time and the test temperature are displayed As an added convenience the display includes a linear range indicator for the precise control of the beginning sample weight Programming the Mx 100 for a new test procedure is accomplished through the front panel LCD and keypad The easy to understand symbols guide the operat
15. surements The two critical parameter settings in the Mx 100 are the time and the temperature settings You can ensure reproducible results if you maintain the determined optimal values for the sample amount time automatic mode and temperature during a moisture analysis routine 21 TRADEMARK AND COPYRIGHT PROTECTION Computrac Arizona Instrument and the stylized AZI are all registered trademarks of Arizona Instrument LLC Copyright 1997 Arizona Instrument LLC All Rights Reserved Arizona Instrument LLC Computrac Mx 100 Moisture Analyzer Manual Part Number 700 0015 Revision A1 Document Number 6C21 0018 If you have any questions regarding the operation of this instrument please call our toll free number 800 528 7411 Internationally call 602 470 1414 or fax 480 804 0656 Arizona Instrument LLC 3375 N Delaware St Chandler Arizona 85225 USA http www azic com email azi azic com General intl azic com International support azic com Customer Support 22
16. ver long periods Ifa cold moisture analyzer is brought to a substantially warmer place moisture in the air will condense on its surfaces When transferring a moisture analyzer from a cool area to a warmer one make sure to leave it unplugged for about two hours at room temperature to equilibrate After equilibration if you keep the moisture analyzer connected to line power the continuous positive difference in temperature between the inside of the moisture analyzer and the outside will practically eliminate the effects of moisture condensation Safety Precautions If you attach an extension cord without a protective grounding conductor it may interfere with the built in protection provided by the moisture analyzer If you use an electrical outlet that does not have a protective grounding conductor make sure to have an equivalent protective conductor installed by a certified electrician as specified in the applicable regulations for installation in your country To ensure safety the data interface is separated from line power by a transformer with a Class 1 design Leveling the Moisture Analyzer You can level the moisture analyzer using the four leveling feet This is only necessary if you are testing samples of low viscosity which need to be at a uniform level in the disposable sample pan How to Operate the Mx 100 Moisture Analyzer You can determine moisture content and dry weight with the Mx 100 as soon as it is switched ON
17. ximum 5 10 g typical Readability 0 01 Measuring accuracy 0 05 at approximately 5 10 g Depending on sample Measuring range 0 100 Moisture Temperature range 40 160 C Temperature increments 5 C Ambient temperature range 10 to 40 C Sample dish 90 mm diameter disposable aluminum 16 Housing W x D x H Net weight Power requirements Frequency Allowable voltage fluctuation Power consumption Interface 217x283x 165 mm 8 5 x 11 1 x 6 5 in approximately 5 5 kg 12 1 lbs 115 V or 230 V selectable 50 60 Hz 20 to 15 400 VA maximum RS 232 C S V24 V28 7 bit ASCII 1 200 baud odd parity 17 Appendix C Error Messages and Troubleshooting Problem No Segments Appear in the Display L I appears in the LCD H appears in the LCD The weight result changes constantly or the LCD does not light up Cause No power available The power cord is not plugged in The dish retainer 2 is not in place Sample exceeds the capacity of the moisture analyzer Unstable ambient conditions The sample dish or the dish retainer is touching the protective disk plate 3 18 Remedy Check the power supply Plug in the power cord Insert the dish retainer Reduce the initial sample weight Set up the moisture analyzer in another area Position the sample dish or dish retainer correctly making sure that they do not touch the
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