Spectrum Techniques ST365 Technical Manual Download | Manualshive

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Spectrum Techniques

ST365

RADIATION COUNTER

TECHNICAL MANUAL

SPECTRUM TECHNIQUES, LLC

106 UNION VALLEY ROAD

OAK RIDGE, TN 37830

USA

P: 865-482-9937

F: 865.483-0473

E:

[email protected]

WWW.SPECTRUMTECHNIQUES.COM

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Summary of Contents for ST365

Page 1: ...echniques ST365 RADIATION COUNTER TECHNICAL MANUAL SPECTRUM TECHNIQUES LLC 106 UNION VALLEY ROAD OAK RIDGE TN 37830 USA P 865 482 9937 F 865 483 0473 E SALES SPECTRUMTECHNIQUES COM W WWW SPECTRUMTECHN...

Page 2: ...manufacture will be covered by the original manufacturers warranty usually one year from date of shipment This warranty excludes all GM tube windows which are extremely fragile These devices cannot be...

Page 3: ...m Techniques LLC www spectrumtechniques com Page 3 of 14 TABLE OF CONTENTS INTRODUCTION 4 SPECIFICATIONS 5 DESCRIPTION OF CONTROLS FUNCTIONS AND INDICATORS 6 STAND ALONE OPERATION 7 BASIC GM SYSTEM SE...

Page 4: ...omes in two models The ST365A with extra large LED s provide a digital display that is clear and visible even under bright ambient light or the ST365B with a back lit Liquid Crystal Display LCD which...

Page 5: ...Fi Direct for Android Device Model A Display 6 decade LED 1 inch numerals Model B Display 16 character LCD Backlight alpha numeric Modes Counts Count Rate Counts Per Second Elapsed Time Preset Time Hi...

Page 6: ...is detecting and counting events Power Button Pressing the POWER button toggles the instrument on and off An LED lights when the unit is powered HV ON OFF Button Pressing the HV ON OFF button toggles...

Page 7: ...e RATE display mode Time Set and Display Mode TIME LED Preset time a parameter the user sets for the duration of counting Elapsed time the time since the start of counting On entering the TIME mode th...

Page 8: ...Starting a count or pressing the STOP RESET button do not affect the high voltage setting Scintillation GM Mode Indicator SCINT LED When this LED is on the user can change the input detector type For...

Page 9: ...t set the preset time to zero Step 6 COUNT A RADIOACTIVE SAMPLE Place a radioactive source close to the GM detector Press the OK button to start acquiring data To stop counting press the STOP RESET bu...

Page 10: ...X axis being the high voltage volts and the Y axis being the counts counts Plot the data points and draw the curve The plotted data should resemble the graph below GEIGER PLATEAU CURVE Notice the ST3...

Page 11: ...entally using two radioactive sources Since maintaining consistent counting geometry is important throughout the experiment Spectrum Techniques special split source Item ID RSS2 is available for makin...

Page 12: ...Then use the LEFT and RIGHT arrow buttons to set the desired preset time for an indefinite count set the preset time to zero Step 6 COUNT A RADIOACTIVE SAMPLE Place a radioactive source close to the...

Page 13: ...ive source Record the high voltage and total counts Reset the count increase the high voltage by 10 or 20 volts and perform the next count Repeat this process until the maximum high voltage is reached...

Page 14: ...of 14 SODIUM IODIDE GAIN SWEEP CURVE USING SELECTED ISOTOPES Notice that at lower high voltages the ST365 will only count higher energy gammas Increasing the high voltage brings lower energy gammas ab...

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