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Precisa prepASH, Manual

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prepASH Operating Instructions 

 

Precisa 

Ref01.i  

15 

 

 

5.3  prepASH User Interface 

An existing program can be opened or new programs created on the prepASH user interface. 

 

 

5.3.1 Display Bar 

 

The display bar appears at the very top of the user interface and always remains visible on the main 
menu pages. 
It shows the current temperature and power values, as well as the gas flow rate. 
 

Summary of Contents for prepASH

Page 1: ...Precisa Gravimetrics AG 8953 Dietikon Switzerland prepASH Drying and Ashing Device Serial Number S N Installation Date _________________________ _________________________...

Page 2: ...METRIC CALIBRATION 12 4 6 GAS ADJUSTMENT 12 4 7 MECHANICAL CALIBRATION 12 4 8 INSERTING THE TURN TABLE 12 5 SOFTWARE FIRST STEPS 13 5 1 PROGRAM START 13 5 2 PREPASH CONTROLS 13 5 2 1 Buttons 13 5 2 2...

Page 3: ...AMPLE 31 9 CALCULATIONS 32 10 SCREEN SETTINGS LANGUAGUE SELECTION 33 11 FORMATTING 34 12 CONFIGURATION CALIBRATION 35 12 1 BALANCE CALIBRATION 35 12 2 GAS ADJUSTMENT AND HOOD CONTROL 36 12 3 VIEW CONT...

Page 4: ...ht on its stand and on a stable level base Atmospheric contamination may only be non conductive Short term conductivity caused by condensation may only arise occasionally The device may not be operate...

Page 5: ...with other makes of devices it is imperative that you follow the instructions for the safe and proper use of the auxiliary devices 3 2 Structure and Function 3 2 1 Structure of the Ashing Device 1 2...

Page 6: ...15 A Power consumption 3300 VA Balance system Weighing range 120 g Number of samples 1 29 Resolution 0 0001 Unit g Heating system Ceramic infrared radiator Temperature range 50 C 1000 C Temperature st...

Page 7: ...mbient conditions Temperature 5 C 35 C Relative humidity 25 85 non condensing If you have any questions regarding the technical data or require detailed technical information about your ashing device...

Page 8: ...ilter must be emptied manually to ensure that no condensation enters the device 6 The pneumatic system can be vented or disconnected from the compressed air network via the switch on valve 2 7 The pro...

Page 9: ...r is lined with insulating inserts 2 The suction device 3 is in the back left The circlip 1 prevents jamming when the lid is closed CAUTION Watch out for hot parts when you are handling the device 4 5...

Page 10: ...fore starting to work with the ashing device and pay particular attention to the safety instructions see section 2 Safety on page Fehler Textmarke nicht definiert 1 2 Unpacking the prepASH 1 Open the...

Page 11: ...itions see section 3 3 Technical Data on page 5 and also fulfils the following criteria The room in which it is installed must be adequately spacious minimum room capacity of 10 m3 and must be well ve...

Page 12: ...ply using the attached maintenance unit see section 3 4 2 Controls and Connections on the Back on page 7 DANGER The ashing device is operated with a 230 V AC supply The electrical wiring work should b...

Page 13: ...e of use It is recommended to calibrate the balance regularly The procedure is described in the section marked 12 1 Balance Calibration page 35 4 6 Gas Adjustment The gas flow must be regulated after...

Page 14: ...the prepASH button The other three buttons lead to screen and service and calibration settings Users must be authorized to access these 12 Configuration Calibration page35 5 2 prepASH Controls 5 2 1 B...

Page 15: ...appears in the white box The numbers to the left and right of it show the maximum and minimum entries in this entry range Incorrect entries can be corrected using the arrow and DEL buttons 5 2 3 Text...

Page 16: ...g program can be opened or new programs created on the prepASH user interface 5 3 1 Display Bar The display bar appears at the very top of the user interface and always remains visible on the main men...

Page 17: ...Ref01 i 16 5 3 2 Flow Chart The sequence of the main menu pages is illustrated in the flow chart User interface Open Program new or edit Select and open program Edit program steps Define results calc...

Page 18: ...Operating Instructions Precisa Ref01 i 17 Sample information Initial weighing Group assignment Graphics setting Start page Results printout Numerical control Program Execution Automatic saving and pr...

Page 19: ...of control parameters for each stage of the program is described in detail in the Program Editor section see section 6 Program Editor on page18 5 3 5 Program Execution The first page that appears is...

Page 20: ...ogram step in which the parameter settings are to be active A program supports up to 10 steps Switch from one step to another by touching the Step buttons The program step currently set is shown in th...

Page 21: ...g per unit of time min 30 min 60 min Stop At the end of the step the program is interrupted and the hood is opened as soon as the chosen temperature has been arrived see 7 3 Events on completion of th...

Page 22: ...d temperature are input graphically by tapping in values with one of the bottom buttons A double arrow appears on the graphic display The selected parameter for the program section is changed by dragg...

Page 23: ...ed as residue or loss in terms of per cent per mil or as an absolute amount in grams The results may be relative to the starting weight S Sample or to any earlier result R1 R2 Residue 7 3 Events on co...

Page 24: ...is opened by means of compressed air The three possible settings for the hood closed half closed open can be controlled by software For safety reasons the hood cannot be opened at temperatures 800 C...

Page 25: ...The empty crucible is weighed for the purposes of lift correction during each measuring cycle Name The name of the sample can be entered in the text field after the tare process in the sample sequence...

Page 26: ...relevant crucible 6 If the crucible is removed from the rotary plate in order to pour the sample in the sample is first weighed by touching the balance button The crucible is re centred by lifting the...

Page 27: ...en by tapping the appropriate buttons The color of the weight display can be set for every sample In order to do this tap the color being changed X Axis scaling The software recommends the scaling The...

Page 28: ...g on Start CAUTION The sample chamber hood automatically closes after the tare button is touched 8 6 2 During the Measurement The current status of the parameters is shown in the display bar The weigh...

Page 29: ...n order to do this scroll back to the prepASH user interface and then select the Program Editor 8 6 3 Program End A sound is emitted to signal the end of the program provided this setting has been sel...

Page 30: ...have entered the file name click on the Save button again in order to save it 8 6 5 Printing the Results The print dialog is opened by touching the Printer button Select which group to print in the g...

Page 31: ...e power can be displayed as an option The prepASH program is described numerically in the second window For this purpose the set time t edit the actual duration t run and the temperature and gas setti...

Page 32: ...ated in the outer circular row samples 20 29 are in the inner circular row If you prefer to have the selected sample presented please select the mode Sample Removal with retracted turntable The select...

Page 33: ...eight g 100 weight Starting weight End Residue 00 0 00 0 1000 weight Starting weight End Residue Loss g Starting weight g End weight g 100 weight Starting weight End weight Starting Loss 00 0 00 0 100...

Page 34: ...by entering the password Administrator 83710 Date Time The date is entered in the format dd mm yyyy the time in the format hh mm ss Beep Buzzer The accoustic signal can be switched off using the switc...

Page 35: ...in the screen settings must be saved otherwise the previously valid settings will remain active 11 Formatting The format page is opened by touching the switch surface of the start page On this page it...

Page 36: ...calibration by touching the Cal button The device performs a zero point measurement 0 g flashes in red After the zero point measurement the display flashes the calibration weight 50 g in blue Place t...

Page 37: ...easured gas flow is indicated on the right Inlet pressure Air 6 bar O2 and N2 3 bar If necessary regulate the flow of the valve right hand side of the prepASH Increase flow by turning anti clockwise H...

Page 38: ...performance and gasflow curves Colors of the weight progress curves of the specimen 12 4 User control Page view selection visible Page display control is also available in the program set up Increment...

Page 39: ...er to guarantee operational safety the ashing device must be inspected every 4 years at least by an electrician from your Service Centre to ensure that it is in good working order Other maintenance is...

Page 40: ...Tools Pin type socket wrench width across flats 7 mm Phillips screw driver Remove upper cover 1 open the hood by software 2 unscrew the 2 hexagon bolts in the corners of the cover from below 3 close t...

Page 41: ...needed also clean the prepASH side 9 The ceramic tube may be cleaned mechanically Reinstall the upper cover 10 Tilt the upper cover down on to the hood 11 plug in the mains cable and turn on the instr...

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