Summary of Contents for Spectrum Techniques ST365
- Page 1 Spectrum Techniques ST365 RADIATION COUNTER TECHNICAL MANUAL SPECTRUM TECHNIQUES, LLC 106 UNION VALLEY ROAD OAK RIDGE, TN 37830 P: 865-482-9937 F: 865.483-0473 SALES@SPECTRUMTECHNIQUES.COM WWW.SPECTRUMTECHNIQUES.COM...
- Page 2 Defective products must be returned to our facility at the customer’s expense and in turn Spectrum Techniques will cover the cost of returning the products to the customer. This warranty covers the cost of our labor, any replacement parts, and shipment one-way.
-
Page 3: Table Of Contents
ST365 Radiation Counter Technical Manual May 2020 – Revision 2.0 TABLE OF CONTENTS INTRODUCTION ............................. 4 SPECIFICATIONS ............................5 DESCRIPTION OF CONTROLS, FUNCTIONS, AND INDICATORS ..............6 STAND ALONE OPERATION ........................... 7 BASIC GM SYSTEM SETUP AND OPERATION ....................9 BASIC SCINTILLATION SYSTEM SETUP AND OPERATION ................ -
Page 4: Introduction
USB, LAN, and Wi-Fi Direct formats. The ST365 includes BNC and MHV connectors, as well as a precision high voltage supply that is adjustable from 0 to +1200 volts. This high voltage supply provides 0.2mA at 1200 volts making it suitable for many types of Geiger Mueller (GM) tubes and scintillation detectors. -
Page 5: Specifications
7.6 x 22.9 x 17.3 cm (3 x 9 x 6.8 in.) (H x W x D) Weight: 0.82 kg (1.8 lb) CAUTION ONLY USE THE AC ADAPTER INCLUDED WITH THE ST365. USING A DIFFERENT ADAPTER CAN DAMAGE THE UNIT AND VOID THE WARRANTY. Spectrum Techniques, LLC www.spectrumtechniques.com... -
Page 6: Description Of Controls, Functions, And Indicators
May 2020 – Revision 2.0 DESCRIPTION OF CONTROLS, FUNCTIONS, AND INDICATORS Below is a brief description of the ST365’s front panel layout. A detailed explanation of the controls can be found in the STAND ALONE OPERATNG section. Mode Indication LEDs... -
Page 7: Stand Alone Operation
ST365 Radiation Counter Technical Manual May 2020 – Revision 2.0 STAND ALONE OPERATION Below is a description of each mode. The ‘NAVIGATION CONTROL’ buttons allow the user to select up and down through the modes. To the right of the main display is the mode LEDs which indicate the instrument mode. In standalone operation the user can navigate the modes at any time, without affecting the data or interrupting the count, even if the unit is counting. - Page 8 Scintillation/GM When this LED is on, the user can change the input detector type. For correct operation Mode Indicator: the user must set the ST365 Radiation Counter correctly for the type of detector to which (SCINT LED) it is connected.
-
Page 9: Basic Gm System Setup And Operation
BNC cable to the BNC connector on the back of the ST365. Step 2 CONNECT THE POWER SUPPLY TO THE ST365 Connect the power supply to the connector on the back of the ST365 and plug the ST365 into a wall outlet. Step 3 POWER ON THE ST365 Press the ‘POWER’... - Page 10 Notice the ST365 started counting at a point corresponding to the Geiger Threshold Voltage; from there follows the Geiger Plateau with little change in the counts detected as the voltage increases. Finally, a point is reached where the counts rapidly increase until the ST365/GM tube moves into continuous discharge – This is called the break down region.
- Page 11 ( b ) ( a+b ) The resolving time for the ST365 is extremely short and not significant when compared to that of the GM tube. Therefore, only the resolving time of the GM tube affects the true count rate.
-
Page 12: Basic Scintillation System Setup And Operation
Unlike the Geiger Plateau of GM tubes, there is not an obvious ‘correct’ operating voltage for a scintillation detector. The ST365 sets the gain of the sodium iodide (NaI) detector by the high voltage it applies to the photo multiplier tube (PMT) –... - Page 13 Step 5 REDUCE HIGH VOLTAGE Once finished, reduce the high voltage and power off the ST365. Step 6 CREATE THE CURVE With the collected data, create a semi-log X-Y graph with the X-axis being the high voltage (volts) and the Y-axis being the counts (counts).
- Page 14 Na-22 Background 1200 High Voltage (volts) Notice that at lower high voltages, the ST365 will only count higher energy gammas. Increasing the high voltage brings lower energy gammas above background so that they can be counted. Spectrum Techniques, LLC www.spectrumtechniques.com...
Need help?
Do you have a question about the ST365 and is the answer not in the manual?
Questions and answers
Hello, the high voltage button stopped working. The light of this button does work when the device is powered on.
If the high voltage (HV) button on the Spectrum Techniques ST365 is not working despite the light functioning, possible causes could include:
1. Incorrect Mode Selection – Ensure the device is set to the correct mode (e.g., SCINT mode for a scintillation detector) using the navigation controls.
2. Voltage Setting Issue – Verify that the high voltage level is properly set using the ‘UP’ and ‘DOWN’ arrow buttons in HV mode.
3. Loose or Faulty Connections – Check that the HV cable is securely connected to both the detector and the ST365.
4. Detector Incompatibility or Malfunction – Ensure the connected detector is compatible and functioning correctly.
5. Software or Firmware Issue – If applicable, restart the device or check for software errors.
6. Power Supply Problem – Confirm that the correct AC adapter is used and properly connected, as using an incorrect adapter can cause malfunctions.
If the issue persists, further troubleshooting or contacting the manufacturer may be necessary.
This answer is automatically generated