GAS BLOWER
Contents
1. All measurements are stored on the hard disk C TESTPT DEMO DATA TXT file The Exit button ends the program 11 16 E Temperature profile Temperature Program 12 16 13 16 REGULATION PARAMETERS The following parameters for the Eurotherm 902P are advised to obtain a temperature stability of 0 5 C Pb 5 7 Ti 40 Td 6 6 Cbl Non CbhzNon C1h 23 3 Maximum power HI 100 Maximum temperature setpoint Sph 1000 Watch out as factory settings the ramps rate are defined in C minute In order to avoid damaging the device it is advised not to use ramp rate higher than 10 C minute The factory settings are the following C3 2400 C6 0111 C720000 Al 80 C Add 0 14 16 GAS FLOW METER The graduation of the gas flow meter is I h Air 20 C The full scale is 600 is l h Air 20 C The graph float travel as a function of the flow is given hereafter To define the graduation corresponding to gas flow of other gas than air a conversion factor is used Gas flow l h graduation pair Ugas 7 Where Hair is the air volumic mass is the gas used volumic mass Hair 1 293 g l Mritrogen 1 251 g l Margon 1 784 g l Exemple To set a gas flow of 340 I h Argon the graduation must be set to graduation 340 Hair Margo 340 1 293 1 784 7 399 4 15 16 CALIBRATION For information the temperature has been measured by means of a t2. temperature setpoint is correct Otherwise modify fastly the setpoint by pressing simultaneously on v and on V or see section 2 operation 3 0 setpoint page 24 in the 902P user manual 10 16 902P heating program software Software installation with Windows 1 Insert the floppy disk HEATING PROGRAM in drive A 2 Click on the Start button and select Run 3 Type a setup and click on the OK button 4 The default directory is C Demo you can not change it Then click on the Ok button 5 After a while you will get the following message Setup has installed the software successfully and added the application s to the Program Manager Click on the OK button To run this program click twice on the Programmes Cyberstar Heating program icon The Temperature program button can be pressed to define and or run the heating temperature programs loaded in the 902P temperature controller driving the furnace heating element The current program is plotted on the screen see picture below Every time a value is modified the plot is updated You can define up to 8 segments ramp and dwell A ramp rate of 0 2 means end of program see Eurotherm documentation for further explanation The Save button allows to update the defined programs on the hard disk C TESTPT DEMO HEAT TXT file The Cancel button allows not to take into account any modification The Run button allows to start immediately the defined program if necessary
3. C per minute as rate for the first G PI1 is displayed V and to select 60 as final setpoint G Pdl is displayed V and to select 0 5 hour as dwell time A ee V Pr2 is displayed V and 2 to select 1 C per minute as rate for the second ramp press on press on press on press on press on press on ramp press on press on C PI2 is displayed V and to select 180 C as final setpoint G Pd2 is displayed V and to select 1 hour as dwell time A Loi W Pr3 is displayed V and to select 2 C per minute as rate for the last C PI3 is displayed V and to select 0 C as final setpoint 9 16 press on G Pd3 is displayed presson V and to select 0 hour as dwell time press on Pr4 is displayed presson V and to select End press on G Pto is displayed presson V and to select 1 as number of cycle Wait until the 902P goes back in the operation mode Running the programm Before running a programm check that the automatic mode is set and not the manual mode If MAN is displayed the manual mode is set press then the button P5 Check that no program is already running Ramp or hold must not be displayed Otherwise press simultaneously the buttons V and This will stop the running program To run the program press on Il The next press will hold and restart the program To stop the running program press simultaneously the buttons V and Watch out that the
4. Cyberstar s A Si ge social Parc Sud Galaxie 1 rue des tropiques BP 344 38435 Echirolles cedex France T l 33 4 76 40 35 91 Facs 33 4 76 40 39 26 GAS BLOWER User manual April 2004 Cyberstar S A au capital de 250 000 Euros RCS Grenoble B 338 222 060 338 222 060 RM 381 siret 338 222 060 00026 APE 333Z nr tva FR 20 338222060 CONTENTS TECHNICAL INFORMATIONS SAFETY RULES PRACTICAL ADVICES INSTALLATION USER MANUAL REGULATION PARAMETERS GAS FLOW METER CALIBRATION 2 16 page 13 14 15 TECHNICAL INFORMATIONS Control unit Dimensions L 550 mm l 450 mm hz270 mm Gas blower Diameter 50 mm Height 80 mm Weight 680 g Materials inox aluminium alumina and alumina fibers Power 220 V 1000 W fuse 10A Gas supply 6 bars 600 l h maximum flow Water cooling supply maximum 6 bars water flow 30 I h minimum inlet temperature 25 C Features and limits e Maximum temperature 1000 C with a gas flow set to 500 l h air Repeatibility in the isotherm zone x 2 C e Stability during temperature dwell 0 5 C The sample temperature corresponding to the setpoint temperature must be defined by a calibration The calibration must take into account the emissivity of the sample the geometry the position in the flux the gas flow 3 16 SAFETY RULES Do not use hydrogen or any toxic gas Watch out for fire risks The use of the gas blower in a
5. ain conditions an excessive flow can make the sample vibrating Increasing the flow of gas reduces the radial isothermal plateau and increases the isothermal area in the axial direction 5 16 INSTALLATION Before connecting or disconnecting any element of this equipment always check that the control cabinet is switched off On the rear rack panel connect C5 thermocouple C2 heating element power supply C7 is the RS232 connector Connect the gas supply to the filter on the rear rack panel under the mention GAS INLET Pressure must be 6 bars oil free The gas tubing must be 4 mm internal diameter and 6 mm external diameter Connect the rack to a 230 V 50Hz mains socket minimum power 1KVA using the standard cable Connect the gas blower to a 4 bars water cooling system minimum flow is 1 l mn Mentions WATER INLET and WATER OUTLET are set on the rear rack panel A water safety device is connected into the water cooling circuit between the gas blower and the water outlet gas inlet mu BI water outlet mne p Po m gt zt r Fj CE r e ji water inlet EN J 6 16 Jaeger connector Water fittings Ground On the gas blower connect the thermocouple connector the gas fitting the water fittings and the small Jaeger connector 7 16 UsER MANUAL To use the gas blower device open the water circuit open the gas set the float level t
6. closed room increases the fire risk as it increases the oxygen content This device is hazardous it can burn people or put fire to objects even away The hazardous zone is set along the axis of the gas blower on a distance of 500 mm and a diameter of 150 mm For example never put any X ray detector along the axis of the gas blower The water flow meter must be compulsory connected to the water circuit In case of water leak or low water flow it switches off the power supply of the heating element and switches off the Eurotherm 902P temperature controller Suitable gas above 1000 C are air argon and oxygen Never use nitrogen above 500 C 4 16 PRACTICAL ADVICES This device is meant to be set on 4 circle diffractometer with a spherical sample of up to 0 3 mm in diameter The sample can be set very close to the output of the gas blower the maximum distance being 3 5 mm The drawing bellows shows a typical setting of the sample 2 5 mm sample 0 2 mm diameter glued with e g VISHAY micromesures GA100 b SiO rod or tube gas blower In order to avoid over shooting when changing the temperature setpoint it is best to use the program mode of the Eurotherm 902 temperature controller Let increase the temperature slowly 10 C minute High temperature performance is dependant on the gas flow At low rates the temperature at the sample position can be influenced by air draughts deflecting the gas stream Under cert
7. iny thermocouple type K set on the axis of the gas blower 3 5 mm away from the device see drawing next page Ramp from up to 900 C with a rate of 10 C minute The gas flow was set to 340 I h argon graduation 45 More information on the calibration i e using crystalline transition of SmAIO3 and K2S04 is described in the paper Soufflette Heute temperature Pour l Etude de Monocristaux aux Rayons X et aux Neutrons jusqu 1400 K here attached Table Temperature measured by the thermocouple K as a function of the temperature setpoint Temperature setpoint Measured temperature 300 306 400 405 500 499 600 589 700 672 800 751 900 829 _ 900 O 800 700 600 500 E 400 200 100 0 0 200 400 600 800 1000 Temp setpoint C 16 16
8. ypically at 350 I h on the gas flow meter the gas blower can work without gas flow press the green button to switch on the Eurotherm 902P the power supply of the heating element is on The LEDs POWERED and WATER COOLED must be on enter in the Eurotherm 902P the temperature program see below example see section 3 commission 7 0 enter a programme page 9 in the 902P user manual execute the program see below The LED TEMPERATURE APPLIED is on when T gt 80 C Programming the 902P temperature controller Before programming the Eurotherm 902 check that the automatic mode is set and not the manual mode If MAN is displayed the manual mode is set press then the button OW Check that no program is already running Ramp or hold must not be displayed Otherwise press simultaneously the buttons Y and This will stop the running program Watch out that the temperature setpoint is correct Otherwise modify fastly the setpoint by pressing simultaneously on 9 andon V or 8 16 200 180 160 Temp rature C a N A o o 100 N Bo o o o 0 100 200 300 400 Temps minutes The program described herebellow corresponds to the temperature cycle shown on the above picture Programming press and hold G till OpEr is displayed press on press on press on ramp press on press on press on press on press on press on Cs PrOG is displayed A W Pri is displayed V and to select 1
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