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Related Manuals for LUDLUM 70
Summary of Contents for LUDLUM 70
- Page 1 LUDLUM MODEL 70 SPECTROMETRIC PERSONAL RADIATION DETECTOR/IDENTIFIER May 2021...
- Page 2 Model 70 Spectrometric Personal Radiation Detector/Identifier SYSTEM MANUAL May 2021...
- Page 4 RETURN OF GOODS TO MANUFACTURER If equipment needs to be returned to Ludlum Measurements, Inc. for repair or calibration, please send to the address below. All shipments should include documentation containing return shipping address, customer name, telephone number, description of service requested, and all other necessary information.
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Page 5: Table Of Contents
Table of Contents 1. GENERAL SYSTEM DESCRIPTION ....................... 1 1.1 HARDWARE VERSIONS ......................... 1 2. SYSTEM DESCRIPTION & FEATURES ......................2 2.1 OPERATIONAL FUNCTIONS ......................2 2.2 SYSTEM FEATURES ........................2 3. QUICK START ............................. 5 4. DETAILED OPERATION GUIDE ........................6 4.1 CONTROL BUTTONS ........................ - Page 6 Spectrometric Personal Radiation Detector (SPRD) – Radioisotope Identifier (RIID)
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Page 8: General System Description
- Monitoring of the radiation situation at nuclear facilities 1.1 HARDWARE VERSIONS 70/1 – the basic Model 70 is a single detector system utilizing a CZT (Cadmium Zinc Telluride) hemispherical detector for high-energy resolution and sensitivity 70/2 – the Model 70 with single CZT detector and Li6-based neutron detector 70/3 –... -
Page 9: System Description & Features
The Model 70 can be operated in two primary radiation monitoring functions. 1. Search + Dose Mode – In this mode, the Model 70 acts as a radiation search/survey meter displaying the current dose rate and count rate. A “chart-record” of the last 60 data points is displayed on the screen during the search. - Page 10 2. Li6 – based neutron detector, optional. Operational Buttons – The Model 70 has three operating control buttons. The buttons are all enclosed in one easy-to-clean plastic membrane. All system functions are controlled by these buttons that permit easy instrument handling.
- Page 11 Model 70 System Manual Display – A color LCD is used for the Model 70 to permit a full range of alphanumeric and graphic display capabilities. The display contrast may also be manually adjusted depending on ambient light conditions. The unit also incorporates automatic temperature compensation to maintain correct contrast even when the external temperature substantially changes.
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Page 12: Quick Start
Model 70 System Manual Vinyl Carrying Case – The system is supplied with a vinyl carrying case. An easy-open flap allows access to the instrument while providing additional mechanical and weather protection. Manual – This user manual is supplied with the instrument on USB flash memory. -
Page 13: Detailed Operation Guide
This section offers a detailed guide to system operation. 4.1 CONTROL BUTTONS The Model 70 is equipped with three control buttons on the front face. These are the only controls on the instrument. START and CANCEL/SET – is used to scroll through menus displayed on the screen. -
Page 14: Display Contrast
Model 70 System Manual Please release the button appears, and upon doing that, the power will be OFF. At any time during the countdown, releasing the ENTER button will cancel the power OFF. 4.2 DISPLAY CONTRAST The contrast is automatically adjusted by temperature compensation using an internal temperature sensor. - Page 15 Model 70 System Manual The top graph in the prior photo shows the graphical profile of the dose rate along with the current date/time. The second window displays the current dose rate as detected by the instrument. Using these two windows the user can easily identify the direction to the source as necessary before the spectrum is acquired and a source ID is performed.
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Page 16: Identify, Screen 2
Pressing START will resume recording of the Dose. Upon the Model 70 completing the dose recording by reaching the preset time as determined in the settings screen, the dose rate profile will be automatically saved. The unit automatically assigns the dose rate file name in the same way as spectra. - Page 17 Model 70 System Manual The top graph on the photo above shows the spectrum as it is accumulated along with the acquisition time of the spectrum above. Below the spectrum, Nuclide ID is displayed if it has been determined. 1. To begin spectrum acquisition on Screen 2, the user must press START (up arrow). The spectrum will be recorded for the pre-set time as selected in the settings screen.
- Page 18 Model 70 System Manual Nuclide ID Strength Cs-137 15.7 Where the strength represents signal-to-noise ratio for a nuclide identified, the user may consider the values as: Below 10 as low confidence Between 10 and 15 as moderate confidence Above 15 as strong confidence A maximum of up to five identified nuclides can be displayed.
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Page 19: Settings, Screen 3
Model 70 System Manual Pressing CANCEL will cancel the current dose recording and clear all data associated with this spectrum recording (completely cancel the spectrum acquisition). The original Screen 2 will appear. Pressing START will resume recording of the spectrum. - Page 20 Model 70 System Manual 1. The user can select the various parameters desired to modify from the displayed list on Screen 3 by pressing the ‘↑’ up or ‘↓’ down buttons to navigate through the settings menu. The parameter selected to be modified will be highlighted.
- Page 21 Model 70 System Manual 6. The user can select and modify another parameter if desired and update the settings as described above, or if the user is finished modifying the settings, the user can exit and return to the Search + Dose screen (Screen 1).
- Page 22 Model 70 System Manual Neutron Alarm Threshold (cpm): 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 Cumulative Dose Threshold (in Sv): 1 µSv, 5 µSv, 10 µSv, 50 µSv, 100 µSv, 1 mSv, 10 mSv, 100 mSv, 250 mSv Cumulative Dose Threshold (in Rem): 0.1 mrem, 0.5 mrem, 1 mrem, 5m mrem, 10 mrem, 100...
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Page 23: Specifications
Model 70/3 or 70/4 CZT detector: Volume 1.6 cm (typically 16 x 10 x 10 mm CZT) Neutron detector (included in Models 70/2 and 70/4): 15 mm x 40 mm, Li6-based CZT Energy Resolution: Usually used Cs, the FWHM at 662 keV: 1.8% to 2.5%... - Page 24 Model 70 System Manual DISPLAY Type: LCD graphics color, LED backlight Viewing Area: 3.5 inches diagonal Contrast: Automatically adjusted POWER SUPPLY OPTIONS Internal Rechargeable Battery Type: Lithium-ion rechargeable battery, external charger 110-240 V Continuous Work: with WiFi on and backlight on – up to 14 hours Continuous Work: with WiFi off and screensaver on –...
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Page 25: Appendix A: Galaxraywiz Software, Graphic User Interface
APPENDIX A: GalaXrayWiz SOFTWARE, Graphic User Interface 1. General GalaXrayWiz is a specially designed software program supplied and used to download data from the Model 70 instrument and view/analyze/format the data. 2. Installing the Software Load the GAMMALEAN Program/Document Support Flash card into the PC. - Page 26 PC in two ways – by USB and through Wi-Fi. Wi-Fi will be described in a separate section. To establish connection through USB, the user has to connect the Model 70 to the PC with the USB cable (enclosed).
- Page 27 Model 70 System Manual If the transfer is complete, the user would see the list of all the records stored in the Model 70 flash memory. The files have clear markings if it is a spectrum or dose rate profile. See the screenshot on the following page.
- Page 28 Model 70 System Manual Using the Tool screen, the user can set or highlight the Region of Interest on the spectrum to get some basic characteristics of ROI, e.g total area and centroid. To set ROI around a desirable part of gamma-spectrum, the user has to place the cursor on the beginning channel, and then press the green arrow Start on the menu bar.
- Page 29 Model 70 System Manual Radiation dose rate profile chart: Ludlum Measurements Inc. May 2021...
- Page 30 Model 70 System Manual By selecting View, the user can switch the channel axis to energy axis, select logarithmic count scale, and change the zoom. The user may also disable or enable windows associated with Workpace – file list, Properties window, and Status bar.
- Page 31 Model 70 System Manual Working with Wi-Fi In order to enable the unit to communicate through Wi-Fi, the user must do the following: 1. From the internal unit Settings, the user has to select Wi-Fi and set it to Enable.
- Page 32 Model 70 System Manual Now the user has to unplug the unit from the USB connector and click on Connect Wi-Fi. The window containing the unit IP address will appear, and the user has to click on OK in this window.
- Page 33 Model 70 System Manual The process of connection will take several seconds with a progress window as shown below. Upon completing the Wi-Fi connection, the message Wi-Fi connection was successful will be on the GUI screen. Now the user can transfer spectral and dose data through Wi-Fi in the same way as with a USB cable.
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Page 34: Appendix B: Nuclide Libraries
Model 70 System Manual Warning: Since Wi-Fi substantially consumes battery power, it is recommended to use Wi-Fi only if necessary. Disable the Wi-Fi from the unit menu if not in use. The previously saved data is stored on the PC in the default directory with the name “Galaxray.”... -
Page 35: Appendix C: Manual Changes
Model 70 System Manual APPENDIX C: MANUAL CHANGES May 2021: Initial release version Ludlum Measurements Inc. May 2021...
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