User manual no.: IMMU-11-02-03-14-ENG MOISTURE ANALYZER MAX SERIES BALANCES AND SCALES RADWAG 26 – 600 Radom, Bracka 28, POLAND Phone: +48 (0-48) 38 48 800, fax. +48 (0-48) 385 00 10 export@radwag.com www.radwag.
MARCH 2014 -2-
TABLE OF CONTENTS 1. TECHNICAL DATA .............................................................................. 6 2. GENERAL SAFETY INFORMATION ................................................... 7 2.1. Definitions of signals and warning signs .................................. 7 2.1.1 Warning descriptions ......................................................... 7 2.1.2. Warning signs ................................................................... 7 2.2. Safety information .........................
8.2.1. User ........................................................................................ 31 8.2.2. Project .................................................................................... 32 8.2.3. Parameters determining content of the GLP procedures....... 32 8.3. Date and time settings............................................................ 33 8.3.1. Setting date format ................................................................. 33 8.3.2. Setting time format .....................
10.10. Restore default setting ........................................................... 64 10.11. Printout of software settings ................................................... 65 10.12. Saving drying mode settings in moisture analyzer’s permanent memory ............................................................................................... 67 11. TESTING PROCEDURE USING A DRYING PROGRAM FROM THE LIBRARY OF DRYING PROGRAMS ................................................. 68 12.
1. TECHNICAL DATA Type MAX 50/1 Reading interval 0,1 mg MAX 60 1 mg Max. capacity Reading interval of moisture content MAX 50 50 g 60 g 0,0001% 0,001% Tare range - 50 g - 60 g Max. sample mass 50 g 60 g Repeatability of moisture content reading Drying temperature range Heating module +/-0,05% (sample ~ 2g), +/-0,01% (sample ~10g) max. 160 °C max.
2. GENERAL SAFETY INFORMATION 2.1. Definitions of signals and warning signs Safety precautions are marked with special descriptions and warning signs. They inform and warn a user of possible dangers. Ignoring the safety warnings may cause injuries, damage of the moisture analyzer, its inappropriate operation and errors of measurements. 2.1.1 Warning descriptions WARNING Dangerous situations of high risk. These situations can cause serious injuries or death if the safety precautions are not taken.
Flammable or explosive substances Toxic substances Hot surfaces 2.2. Safety information CAUTION! The use of moisture analyzer MA 3Y regardless of both, safety information and user manual guidelines may cause health damage and even death WARNING: Nominal voltage for a moisture analyzer is 230 VAC. It means that safety usage precautions for low voltage devices must be abide by while operating the device. Three-core power supply cable with grounding pin comes standard with a moisture analyzer.
overheating. Leave about 20 cm around the instrument and about 1 m above. Air vents that are located in the housing cannot be covered, sealed or blocked in any other way. Do not put any flammable substances on, under or near the moisture analyzer. Be particularly careful when removing the sample from the drying chamber: the sample itself, the drying chamber, shields and the pan can still be extremely hot.
Under no circumstances can the instrument be left Unsupervised! WARNING: Substances containing toxic and caustic or corrosive components Substances that release toxic gases or vapours can cause irritations (eyes, skin or respiratory system), illnesses or even death. Dry such substances only in fume hood. Under no circumstances should the instrument be used in an area with any risk of explosion. The moisture analyzer is not designed to operate in hazardous areas. 2.3.
2.4. Inappropriate use CAUTION! Do not open the drying chamber during drying process. Moisture analyzer features a halogen lamp which is a very powerful heat source. Thus, user should pay special attention no to touch those elements of a moisture analyzer that get hot while drying procedure (i.e.: disposable pan, pan handle, and inner shields of the drying chamber). Remember that some of tested samples may become dangerous if heated (appearance of poisoning vapours, danger of ignition or explosion).
- protect moisture analyzer against contacts with liquids, it might lead to electrocution, fire, emission of substances containing toxic or caustic vapour, emission of explosive substances. 2.6. Warranty Warranty does not cover the following cases: • • • • • • 2.7.
2.9.1. Protective clothing The use of protective clothing is highly recommended while working with the instrument in order to take safety precautions against potential hazards resulting from tested samples and ingredients. Use the following while carrying out tests: • protective apron, • protective glasses, • protective gloves (while working substances).
3. TRANSPORT AND STORAGE 3.1. Delivery check Please check the packaging immediately upon delivery and the device during unpacking for any visible signs of external damage. 3.2. Packaging Please retain all parts of the original packaging should the moisture analyzer be transported in the future. Only the original packaging should be used for dispatching the moisture analyzer. Before packing, disconnect all attached cables and remove any loose/movable parts (weighing pan, shields, inserts).
4.2. Unpacking Carefully remove the moisture analyzer from its packaging, remove the plastic and foil transport protective elements. Gently place the moisture analyzer in its intended place of use. Assembly the components of drying chamber, following guidelines from below figure: Assembling moisture analyzer components: - Assembly insert of the drying chamber’s basis Assembly drying chamber cover, Assembly drying pan handle, Assembly drying pan bracket, Assembly the disposable drying pan..
4.3. Level setting Before plugging to mains, level the moisture analyzer using adjustable feet. Turn the feet in a way that the air bubble of the level is located centrally. 4.4. Standard delivery components • • • • • • • • 4.5. A moisture analyzer MAX series Insert of drying chamber basis. Drying chamber shield. Drying pan handle. Drying pan bracket. Disposable pan. Power cord. User manual. Cleaning Remember to unplug the moisture analyzer from mains before any cleaning activities.
4.7. Connecting peripheral equipment The moisture analyzer must be unplugged from the mains before connecting or disconnecting any peripheral equipment (printer, PC computer). Use only peripheral equipment recommended by the manufacturer with your moisture analyzer. These have been ideally coordinated to your moisture analyzer. On connecting a peripheral device, plug the moisture analyzer to mains. 5. KEYBOARD Start/Stop key – starting / ending drying process according to selected drying mode.
On/Off key – switch on/off display of moisture analyzer. On switching off the display of the device, other subassemblies are continuously supplied, and the moisture analyzer is in standby mode. Display key – changes type of data displayed during and after drying process. Setup key – enter to main menu. Test menu key – function key for selecting drying modes. 5.1.
P1 Adjustment P1 01 External adjustment P1 02 User adjustment P1 03 Adjustment test P1 04 Temperature adjust. P1 05 Adjustment report printout P1 06 Drying test P5 RS-232 P5 01 Baud rate P5 02 Parity P5 03 Data bits P5 04 Stop bits P5 05 Handshake P5 06 Print stable P5 07 Printout type P5 08 Paper cut off P2 GLP P2 01 User P2 02 Project P2 03 Print time P2 04 Print date P2 05 Print user name P2 06 Print project name P2 07 Print ID P2 08 Print adjustment data P6 Printouts P6 01 Printout no.
7.1. Menu operation using moisture analyzer keyboard Entering option of selecting a drying mode: Press Test Menu key to open a list with drying programs saved in moisture analyzer’s memory. The library can contain up to 100 drying programs. Each of drying programs is optionally configurable, and available for multiple times during operation of the moisture analyzer. Exit menu without saving changes: Press Esc key.
name) when its value is flashing. Use RIGHT / LEFT navigating arrows to select a character while entering a parameter value (while its flashing). or Accepting changes in function / parameter settings: Press PRINT/ENTER key to save settings of a modified parameter/function. Changing displayed data during drying process: A moisture analyzer MAX series enables previewing five types of measurement result while the drying process is in progress or on its completion.
On making all changes in the parameter settings, exit to main menu by pressing the ESC key for a few times, until the software displays a message box with below two option: ENTER – save changes and exit ESC – abandon changes and exit 7.2. Menu operation using external computer keyboard All keys present on moisture analyzer’s overlay have their equivalents on a computer keyboard PS type, described in below table: - function keys Description Start / End drying process in an active drying mode.
8. USER MENU User menu is accessible on pressing SETUP key on moisture analyzer’s overlay. The user enables: moisture analyzer adjustment, setting transmission parameters, setting time and date and their format, and also other user parameters. This section of the user manual presents software possibilities of the moisture analyzer and means of changing the parameter settings. 8.1. Moisture analyzer adjustment 8.1.1.
The moisture analyzer gives a command on determining mass of an empty pan, followed by a command to place a 50 g weight (standard) on the pan. a) b) After completing adjustment process the moisture analyzer returns to submenu P1 - Adjustment Press ESC for a few times until the display indicates below message c) d) Depending on needs press ENTER or ESC key. The moisture analyzer returns to the main window (weighing mode). 8.1.2.
The moisture analyzer gives a command on determining mass of an empty pan, followed by a command to place a weight with pre-determined mass. On placing the weight on the pan accept the process by pressing Enter key. After completing the user adjustment process the moisture analyzer returns to submenu P1 Adjustment. As specified in the previous point return to the weighing mode.
1. 2. Thermometer Thermometer holder with a shield Adjustment is a simple process aimed at adjusting the temperature sensor assembled in moisture analyzer’s drying chamber. Before carrying out the temperature adjustment process, install the adjustment set inside the drying chamber following below figures. Step 1.
Step 2. Place in the drying chamber the components of the temperature adjustment set: • Drying chamber shield with assembled control thermometer Step 3. After assembling the adjustment set close drying chamber’s lid and start the temperature adjustment process. CAUTION: remember to carry out all the processes with great care not to damage the mass measuring mechanism of a moisture analyzer.
Enter menu group P1 Adjustment. Set the marker next to a parameter 04 Temperature adjustment. Press RIGHT ARROW navigating key. The moisture analyzer previews current temperature value. After 8 minutes, the display indicates flashing temperature value. Enter the temperatrure value as indicated on the external (control) thermometer. Press Print/Enter key to proceeed to the following step of drying chamber adjustment process.
P1 05 Report printout : P1 05 Report printout: 1 : YES – report is printed 0 : NO – report is not printed Remember that on enabling report printout (set to 1), the report is generated and sent automatically. An example of a printout of a report from adjustment process: The printout content depends on parameters set in group P2 GLP (see point 8.2 of this user manual). Variables that are printed have an attribute set to 1: yes.
Press RIGHT ARROW navigating key. The moisture analyzer opens a window for entering the temperature value for carrying out the drying test. Use the navigsting keys to enter the desired temperature value and press ENTER button to accept. The moisture analyzer displays another message for entering the permissible temperature error that is acceptable by an operator. Use the navigating keys to enter the desired error size and press ENTER button to accept.
---------------------------------------Test the drying chamber ---------------------------------------17/04/2013 15:03:42 Balance Id: 01 Number of calibration kit: 0 Temperature setpoint: 120 The final temperature: 120 The temperature measured: 119 Permissible error: 3 Status: OK ---------------------------------------- The test result can be printed on a printer connected to a moisture analyzer by pressing PRINT button. An example of a report from drying chamber test is presented in the table on the left.
and enter the following character. On entering all of the characters press ENTER key. Using external computer keyboard PS/2 type Press F2 key to enter the main menu, press F3 key or use navigating arrows to set the marker next to a parameter 01 User and press F2 key to enter parameter settings (flashing first character of an existing number or flashing cursor if not number is specified). Use computer keyboard to enter a new User name and accept it by pressing Enter key.
Data to be printed must have an attribute set to “1 yes”. EXAMPLES OF PRINTOUTS FOR DIFFERENT GLP SETTINGS: P2 03 print time: 1:yes Date : 16/01/2002 P2 04 print date: 1: yes Time : 13:12:30 P2 05 print user: 1: yes User : R. Wilk P2 06 print project: 1: yes Project : Check P2 07 print ID: 1: yes Balance : 11111111 P2 08 print adjustment: 1: yes Last adjustment: ---------------------16/01/2002 13:02 External adjustment Dev.: 0.0001 g ---------------------130.
8.3.2. Setting time format Press navigating arrow key to enter submenu 02 Time format. Select one of available values: 1. Time format – 12 hours 2. Time format – 24 hours On selecting the appropriate value accept it by pressing ENTER key. 12 hour time format is differentiated by letters PM or AM visible on a printout. 8.3.3. Setting time Press navigating arrow key to enter settings of parameter 03 Time Set current time: Place the cursor next to a value to be changed (i.e. Hour, Minute, Second) .
After setting the time to a needed value return to the weighing mode following procedure described in point 7.1 of this user manual. 8.3.4. Setting date Press navigating arrow key to enter settings of parameter 04 Date Following procedure described in point 8.3.3 set current date value. After setting the date return to the weighing mode following procedure specified in point 7.1 of this user manual. 8.3.5.
8.4.2. Filter settings Depending on current ambient conditions at a workstation it is necessary to set filtering value. In case of perfect operating conditions set the filter value to very fast (set value of parameter 01 Filter to 1). If the conditions are bad (i.e. vibrations, air movement) it is recommended to set the filter value to slow or very slow (set value of parameter 01 Filter to 4 or 5). The efficiency of filter operation differs in relation to the measuring range.
8.5. RS 232 Functions Moisture analyzer MAX series enables determining communication parameters with a computer or a printer. Enter menu group P5 RS-232 8.5.1.
8.6. Printouts User of a moisture analyzer MAX series can set up to 5 different printout templates which are sent from the instrument to a connected peripheral device (a printer or a computer) through the RS 232 slot. 8.6.1.
8.6.2. Non-standard printout templates Principles of creating non-standard printout templates: 1. Moisture analyzer MAX series enables creating up to 4 custom printout templates; 2. each template must have the string of text start and end specified, e.g. Printout no. 1 Start – 1 and Printout no. 1 Stop – 40. In this case the Printout no. 1 contains text strings from 1 to 40. 3. Next insert the texts into the specified text strings, i.e. 1 ÷ 40.
Variables available in drying mode only %C %M %D %R Drying chamber temperature Drying result – humidity content Drying result – dry mass Drying result – humid/dry ratio %c %S %E %p %N Drying result – current net mass in basic measuring unit Drying time Start mass of a sample End mass of a sample Parameters of an enabled drying mode Special signs for designing a non-standard printout template \\ \c \r \n \t \s \0 Single “\” sign CRLF CR LF Tabulator Skip to the following text ”string” End of a printou
Load mass *****Signature:......... ****** Enter text strings settings and input 8 characters from the above text into each of the text strings until completing the printout. Text string no. 25 26 27 28 29 30 31 32 33 34 35 36 37 Text 16 Text 17 Text 18 Text 19 Text 20 Text 21 Text 22 Text 23 Text 24 Text 25 Text 26 Text 27 Text 28 Text 1 2 “ R B s e s e : r : L o s : * * n a . . . \ * * 3 A a & d % a % * t . c * 4 D l \ \ t d N * u . * 5 W a S c c \ \ * r .
Principles of inserting texts: a) Using keys on balance’s overlay Toggling upwards through all available characters: digits, letters, and signs by one value. Toggling downwards through all available characters: digits, letters, and signs by one value.
8.6.5. Enabling non-standard printout templates Enabling a non standard printout template, e.g. printout no. 1: Enter group of parameters P6 Printouts. In a parameter determining printout type 01 Printout no. enter 1: printout 1 and in parameter 02 printout 1 start enter the text string of printout start.
Printout 4 8.7. Moisture analyzer parameter settings. Depending on user needs the moisture analyzer enables setting parameters influencing its operation. These parameters are grouped in menu P7 Other, for instance: beep sound on pressing a key/button, screen contrast, etc. 8.7.1. Entering menu group P7 Other Enter submenu group P7 Other.
8.7.2. Parameter settings The parameters are set as specified in case of previous menu groups. 01 Password The password protects the moisture analyzer against making changes in its settings 02 Database of drying programs Enabling / disabling accessibility of the database of drying programs.
08 Balance no. This function serves for information purpose only, and it enables previewing factory number of a balance 09 Software no. Enables previewing number of software revision operating in a balance 10 Parameter printout Enabling this function causes printing balance parameters set in the user menu. The user specifies numbers of parameters that should be printed.
Determines whether a code entered to moisture analyzer’s memory should be automatically sent via RS 232 interface. 14. Previous version The parameter enables functioning of a moisture analyzer as it would be if previous software version was running, i.e. after setting the parameter value to the moisture analyzer operates the drying process and the drying temperature range similarly to the one specific for the previous software version (in comparable temperature conditions).
Press navigating arrow keys to set the cursor next to a menu group P7 Other. On returning to the main window (with procedure of saving changes) the use can carry out a drying process after setting the basic parameters for drying a sample to be tested. There is no need to select a specific drying program from the database. When setting the parameter Database of drying programs to value 0 – disabled. The user does not have access to the database records saved in the moisture analyzer memory.
Press right arrow navigating key to enable selection of a drying profile (name of a drying mode is previewed above the mode’s graphic presentation. The pictogram denoting drying mode selection menu is flashing in the upper left corner of the display) Press UP or DOWN navigating arrow keys to select one of available drying modes: Standard, Quick, Mild or Step.
parameters. Pressing the arrow key causes appearing of a cursor (black triangle) next to the first parameter of selected drying mode (visible on the right hand side of the drying mode graphic presentation). Press right arrow navigating key to change parameter value (the displayed value starts flashing) Press UP or DOWN navigating arrow keys to select needed parameter value. After setting the parameter value accept it by pressing ENTER key (the value stops flashing).
After setting the Finish mode criteria go to setting the following parameters of a drying process. In order to set other parameters of the drying process press ENTER key. The software returns to displaying the initial window. Press DOWN navigating arrow key to go to the following step of drying process determination, i.e. Result. Use navigating arrow keys (procedure as in case of drying mode selection) to set the type of displayed measurement result.
After setting the Result criterion go to setting the following parameters of a drying process. In order to set other parameters of the drying process press ENTER key. The software returns to displaying the initial window. Press DOWN navigating arrow key to go to the following step of drying process determination, i.e. Printout Interval. The printout interval is a period of time measured in seconds in which a moisture analyzers sends current measurement result to a connected peripheral device.
sample to be tested. In order to finish setting the drying mode parameters and go to the humidity content determining process press ENTER key. The software returns to displaying the initial window. Once more press ENTER key. The software does to displaying the main window in a level which enables determining humidity content of a sample to be tested. 9.3.
Place the disposable drying pan in its intended holder and place the assembly on the cross-shaped support. support. The display indicates mass of a fitted drying pan. In order to ensure stable measurement conditions it is recommended to close the moisture analyzer’s lid before tarring mass of the drying pan. Press ZERO/TARE button to tare mass of the drying pan to moisture analyzer memory. Mass indication on the display returns to ZERO and the following command appears.
Place a sample to be tested on the drying pan. Mass of a sample should be selected according to previously conducted experiments and features of the tested substance. After stabilization of the indication (followed by appearing of a stability pictogram on the display) close the moisture analyzer’s lid. The software automatically initiates drying of a tested sample.
The indications on the display change and indicate data on conducted process. The moisture analyzer automatically carries out the drying process with drying parameters as set in the drying criteria. The instrument automatically conducts all needed mass measurement and calculating processes resulting from changes mass of the tested sample.
10. DRYING PROCESS WITH USE OF DRYING PROGRAM LIBRARY This section of the user manual specifies in details the procedures for determining a new drying procedure saved in the memory of the moisture analyzer MAX series.. Each drying procedure contains: - name - Profile (drying mode) - Drying temperature - Finish mode - Type of displayed result - Printout interval of data from a drying process - Sample size - Corrective coefficient 10.1.
a drying program entry to be filled with data. Press RIGHT arrow navigating key to open an entry with data on drying program. The opened window contains data saved in the selected drying program. Following the means of moving in the user menu and carrying out changes set required parameters for a drying program. The parameters need to be set in a way to ensure correct performance of the drying process and obtaining of the measurement results. 10.2.
After entering the new name accept it by pressing ENTER key. The last entered character stops flashing. After accepting the newly entered name go to setting another parameters of the drying program. 10.3. Drying mode selection The moisture analyzer MAX series enables selecting one of four available drying modes: Standard, Quick, Mild, Step. Each mode is combined with its corresponding parameters, i.e.: drying temperature and time interval needed to reach set drying temperature.
analyzer Set drying temperature for drying mode Mild and time in which the moisture analyzer should reach the set temperature value. In Step profile set the drying temperatures for thresholds 1 and 2 and the drying temperature and their corresponding time intervals for each of the thresholds. The heating time in each of the thresholds is calculated from the moment of reaching a set temperature in each of the steps..
10.5. Auto switch off settings Finishing of a drying mode can be carried out as: - Automatic 1 (change ratio 1mg/10s) - Automatic 2 (change ratio 1mg/25s) - Automatic 3 (change ratio 1mg/60s) - Automatic 4 (change ratio 1mg/90s) - Automatic 5 (change ratio 1mg/120s) - Time defined (max. time value 99h : 59min.) - Manual (on pressing a button) - Custom (a user should specify change in mass ∆m 0,1-9,9mg over time ∆t max 2,55sec.
10.7. Setting printout interval This parameter determines the interval of sending a measurement result on humidity content of a tested sample. Procedure: Go to software menu. Use DOWN navigating arrow key to place the cursor (black triangle) next to a parameter Printout interval. If option “Chart” is enabled, then the printed result is %M. 10.8. Setting size of a sample to be tested The parameter determines the need to use a sample of specific mass.
In case option Optional is enabled the user has to enter required sample mass and tolerance value for the material to be weighed / dried. If sample mass option is enabled, the moisture analyzer displays prompts for the user on placing a required size of a sample to be tested on the drying pan. If a user neds to dry a sample with different mass, then drying process can be started even if the mass does not comply with set parameter criterion.
Procedure: Go to software menu. Use DOWN navigating arrow key to place the cursor (black triangle) next to a parameter Corrective Coefficient. Use function keys on moisture analyzer keyboard, or an external computer keyboard, to set needed coefficient value. Set the coefficient value in accordance with above specified means of moving in the user menu. 10.10. Restore default setting The parameter enables restoring the default software settings, as determined by the software designer.
software moves back to the previous window. Pressing Esc key abandons restoring of the default parameter. The software returns to previous window without saving changes. 10.11. Printout of software settings The parameter enables printing all current drying mode settings on a connected printer. Procedure: Go to software menu. Use DOWN navigating arrow key to place the cursor (black triangle) next to a parameter Print.
Press RIGHT arrow navigating key causes displaying a message to confirm printout of parameters. Press ENTER key to accept the process. The moisture analyzer sends data on drying mode parameter values to a connected printer, and returns to the previous window. ------- Software parameters -----Software no.: 1 Name: Wheat flour 100 Drying mode: Standard Drying temperature: 120 °C Finish mode: Automatic 3 Result: Humidity content %M Printout interval: 30 s Sample control: No Corrective coef.: 0.
10.12. Saving drying mode settings in moisture analyzer’s permanent memory When determining parameters of a drying mode, all the settings are saved in the moisture analyzer’s volatile memory. Permanent saving of the settings requires returning to the main window with procedure of saving changes. Procedure: Press Esc key. The software displays a question on saving the drying parameters. Pressing ENTER key causes saving the changes and displaying a window with the library of the drying programs.
11. TESTING PROCEDURE USING A DRYING PROGRAM FROM THE LIBRARY OF DRYING PROGRAMS A moisture analyzer MAX series enables carrying out a drying process using programs saved in the library of drying programs. This means of using the device considerably speeds up the preparation for a testing process, as all the parameters on drying process of a material are already determined in the program, i.e. the drying parameters are not set each time before starting a testing procedure of a material.
Press ENTER key to return to the main window. The moisture analyzer is ready to start testing procedure with programmed drying parameters. The upper bar of the display indicates name of the selected drying program and its number from the library of drying programs. On the left side of the display there are pictograms indicating pre-set values of drying parameters (i.e. drying mode, temperature, finish mode, etc.).
heating a sample (with application of a halogen filament) carried out by a moisture analyzer, makes the measurement process very time efficient and short. Measurement speed can be additionally increased by appropriate adjusting moisture analyzer’s parameters depending on substances to be tested. Optimum temperature and drying time depend on type and size of a sample to be tested, and anticipated measuring accuracy. Selection of drying parameters can only be carried out on basis of test measurements. 12.2.
can be prepared for measurement otherwise than grinding, any possible moisture content loss should be calculated. Use of high-silica sand Ensuring optimum substance drying requires that a sample has the largest possible surface for moisture content vaporization. Test results of moisture content in substance which surface has a form of a shell (e.g. glucose syrup) or doughy (e.g.
Liquid substances Semi-fluid substances are dried in their natural form. Large amount of grease (fat) occurring in some of substances make moisture content determination difficult. In such case it is recommended to use additional components, which increase sample’s active surface and aid moisture content releasing process from a sample. such components are high silica sand, blotting paper or filter.
Sample mass has considerable influence on repeatability of measurement results obtained on a moisture analyzer. Relation between sample mass and repeatability is presented in below table. Sample mass to 2g to 10g over 10g Repeatability ±0,24% ±0,06% ±0,04% Data provided in the above table refer to a ideal and uniform sample, and an assumption, that moisture content has completely evaporated from tested sample during testing process, and the sample has not decomposed (e.g. humid high-silica sand).
13.4. Selecting a drying mode The software of moisture analyzer MAX series enables selecting one of four drying modes: • Standard • Quick • Mild • Step STANDARD mode Standard mode is the most frequently used of all drying modes. It enables accurate determining of moisture content is a dried sample. MILD mode Mild mode is used in case of drying substances that are sensitive to rapid heat emitted by filaments operating at full power in the initial stage of drying process.
13.5. Selecting drying time Drying time is set by selecting one of available finish mode criteria. This means that a moisture analyzer must meet pre-set criterion (requirement) (mass over time, time) to automatically finish the drying mode. Finish of drying process can occur on elapsing defined amount of time, independently on loss in mass. This criterion is used for substances that may decompose during drying process, and their mass does not reach constant value.
13.6. Drying mode analysis In the first case the drying mode is an asymptote. The humidity content in a sample reaches a constant and it does not change after long drying time. Using this drying mode enables easy obtaining of repeatable humidity content in a tested sample. The measurement result refers specifically to the constant asymptote value. It easily corresponds and it is simple to determine appropriate finish mode criterion.
14. COOPERATION WITH A PRINTER OR A COMPUTER Each pressing of < PRINT > key causes sending to a connected printer or computer a signal corresponding to current mass indication (display status) with enabled measuring unit. The default baud rate setting of a balance is 9600 bit/sec. If a peripheral device (a printer or a computer) requires other baud rate settings then it needs to be changed in the moisture analyzer’s menu (see point 13 of this user manual). 14.1.
15.
Function Command GIVE SOFTWARE REVISION RV CR LF (sends software name) Function Command GIVE OR CHANGE DATE IN A BALANCE PD CR LF (causes sending data on set date or changes the date) Function Command GIVE OR CHANGE TIME IN A BALANCE PD CR LF (causes sending data on set time or changes the time) Function Command GIVE ENABLED WORKING MODE PM CR LF (causes sending by a balance a code of enabled working mode) Function Command SEND SETUP PS CR LF (causes sending the complete setup - parameter printout)
16. USER GUIDELINES The measurement of relative humidity content of materials to be tested using a moisture analyzer MAX series is much shorter and simpler if compared to a traditional method (weighing – drying – weighing – calculating). It is necessary to remember that it is a different measurement method, this requires an individual selection of drying parameters to each dried substance, such as: • • • Drying temperature, Sample mass, Drying time.
17. MOISTURE ANALYZER MAINTENANCE ACTIVITIES This section of the user manual describes procedures of maintaining a moisture analyzer MAX series in good condition, and means of replacing faulty components (filaments, fuses). 17.1. Cleaning moisture analyzer components In order to ensure required measuring accuracy, the moisture analyzer has to be used and stored in clean conditions. While cleaning the moisture analyzer, precautions provided in this section of the user manual must be obeyed.
After cleaning, thoroughly dry each of moisture analyzer’s components. Do not allow any contamination or liquid to fall into the moisture analyzer. Assembly cleaned and dried components in accordance with above scheme. 17.2. Temperature sensor cleaning In order to ensure correct temperature measurements during testing procedure, pay special attention to cleanness of the temperature sensor (1). Any cleaning activities of the temperature sensor should be carried out while maintaining special precautions.
17.3. Replacing the fuses If after plugging to mains, a signal diode on moisture analyzer’s display does not light up (lack of any reaction on the display), then possibly one of the fuses (or both) is blown. REMEMBER, before initiating any activities relates to fuse replacement switch off the moisture analyzer, and make sure the power cord of the moisture analyzer is unplugged from mains! A moisture analyzer MAX series features two fuses.
17.4. Troubleshooting Problem: no reaction to pressing main switch on/off key (display remains dark). Probable cause: − No voltage in mains − Damaged power cord − Damaged fuse of the moisture analyzer − Moisture analyzer defect Problem: too long pending time for drying process finish. Probable cause:: − Selected finish mode of drying process is incorrect. Carry out experimental tests to select a proper means of finish mode.
17.5. Error messages Detecting of an error is signaled by the moisture analyzer by displaying a message corresponding to the error. The message contains number of the error and a short description informing on the possible causes of error occurrence. List of error messages in a moisture analyzer: Error message "Control sum error" "A/D error" Error no. 1.1 1.2 "Range exceeded " 2.1 "Range exceeded " 2.2 "A/D Null" 2.3 "A/D Full" 2.4 "Tare/Zero out of range " 2.5 "Tare out of range " 2.
"Out of range " 3.1 "Incorrect value " "Incorrect password " "Overwriting error " " Parity error " " Frame error " "CTS transmission suspended " " XOFF transmission suspended" "Incorrect date " 3.2 3.4 4.1 4.2 4.3 "Time value exceeded " 6.1 4.4 adjustment coefficient by more than 20% Parameter value exceeds permissible value. Impermissible parameter value Errors relating to data transmission to a computer or a printer connected to a moisture analyzer. 4.5 5.1 Error of date setting.
The data is ordered according to its performance schedule. If a measurement was carried out using the Mode from Database, then next to the measurement date and time the record displays mode name. in order to print data place the cursor (black triangle) next to a needed record and press Setup key. The detailed data on a measurement is displayed (data order as on a printout). In order to print data press PRINT key. The set of data is sent via RS 232 interface to a connected printer / computer. 19.
MANUFACTURER OF ELECTRONIC WEIGHING INSTRUMENTS RADWAG WAGI ELEKTRONICZNE 26 – 600 Radom, Bracka Street 28, Poland Phone. +48 48 38 48 800, fax. + 48 48 385 00 10 export@radwag.com www.radwag.
