Related Manuals for Ludlum Measurements 702i
Summary of Contents for Ludlum Measurements 702i
- Page 1 LUDLUM MODELS 702i and 711i ISOTOPE IDENTIFIERS December 2018 Serial Number ID001000 and Succeeding Serial Numbers...
- Page 2 LUDLUM MODELS 702i and 711i ISOTOPE IDENTIFIERS December 2018 Serial Number ID001000 and Succeeding Serial Numbers...
- Page 4 Model 702i Isotope Identifier...
- Page 10 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.
-
Page 12: Table Of Contents
Table of Contents Introduction About your Model 702i/711i Unit Caution Statement Getting Started Basic Operation Menu Description of Keypad and Soft Keys Display Conventions Self-Test and Data Screen Choosing User or Administrator Operation Software Connections Connecting AC Power or a Car Adaptor... -
Page 13: Introduction
System Menus Introduction Run a Procedure/Display Information/Open Submenu Check Option On or Off Adjust Slider Select Among Options Isotope List Edit Numeric Value Edit Date for Filter User Menus Field Settings Spectral Data Configuration 9-10 Help Menu 9-11 Administrator Menus 9-12 Configuration (Extra Items) 9-12... -
Page 14: About Your Model 702I/711I Unit
The 702i uses a NaI detector, while the 711i uses a LaBr detector. With the LaBr detector, the 711i provides an extremely high resolution for Cs at 661 keV of 3.5 to 5%. - Page 15 Model 702i or 711i unit analysis in 256 QCC or linear, 512 QCC or linear, and 1024 linear modes. Note that if you are using either the Model 702i or 711i unit without a PC, operation is limited to 256 and 512 QCC, including the saving of spectra. However, while under control of Quantum software, all ADC modes (including 1024 linear) are available.
-
Page 16: Getting Started
Technical Manual Section 2 Section Getting Started Turn on the Model 702i or 711i unit by holding down the power key (which is also the B key) until the status screen appears. Press E to move to the log-in screen, and then press E... -
Page 17: Menu
Description of Keypad and Soft Keys Figure 1 shows a rendering of the Model 702i keypads. Some of the keys are located underneath the display, while the most commonly used keys are located on the handle. -
Page 18: Display Conventions
Figure 2 - Example of Soft Keys Display Conventions In order to make the Model 702i or 711i more friendly and easy to use, we have defined several color and layout conventions for the user interface. Four different nuclide “classes” are defined by their colors, which appear as labels and as filled-in areas in spectra. -
Page 19: Self-Test And Data Screen
Self-Test and Data Screen When the Model 702i or 711i unit is first powered on, you will see a screen that shows the results of an initial power-on self test, or “POST.” A properly functioning unit will have a display similar to that shown in Figure 3. -
Page 20: Choosing User Or Administrator Operation
Model 702i and 711i Technical Manual Section 2 Choosing User or Administrator Operation Immediately after the self-test screen, a log-in screen appears, as shown in Figure 4. On this screen you have the option of logging in as the User or Administrator. The User functions allow first- line responders to perform all the tasks needed in the line of duty. -
Page 21: Software
Software The Quantum™ software is a useful tool for advanced users seeking additional analytical capabilities for their Model 702i and 711i spectra. The Quantum software is supplied in two basic configurations, Quantum MCA and Quantum Gold. Quantum MCA, a subset of Quantum Gold, is the "standard" software and provides qualitative, but not quantitative analysis. -
Page 22: Connections
Section Connections The Model 702i and 711i units have two external connectors for power, communications, and other functions. In the back right-hand corner is a watertight connector that provides AC power. There is a flexible, rubber port cover at the top front, and behind it are a CompactFlash slot on the left and an Ethernet connector on the right. -
Page 23: Batteries
Depending on usage, the Model 702i and 711i unit will generally run six to eight hours on a single charge when the recommended batteries are used. There are several ways to improve your battery... -
Page 24: Ethernet Connection For Data Output
Network Setup. Otherwise, you will only need the IP address setting of the Model 702i or 711i unit for use in step 8 below. Move down to select the first item, Remote Mode. Press the E key to select remote operation. -
Page 25: Specifications
Model 702i and 711i Technical Manual Section 4 Section Specifications Preamplifier Type: Charge Sensitive Input: Negative Current (anode) Type: 14-bit pipelined Speed: 50 MHz Pulse Processing Type: Digital, Trapezoidal Shaping Peaking times: 40 ns to 5.1 µs, factory set to 1.28 µs Gain: Digital, 0.25x to 16x... - Page 26 Model 702i and 711i Technical Manual Section 4 Power Batteries: Internal, 8 x 2450 mAh NiMH AA batteries 35W 12V or 15V universal AC adapter (depending on system revision) Auto: 9V fused accessory adapter Gamma Detector 702i Crystal: 5.1 x 3.8 cm (2 x 1.5 in.) NaI 711i Crystal: 3.8 x 3.8 cm (1.5 x 1.5 in.) LaBr...
-
Page 27: Safety Considerations
Ludlum Measurements, Inc. The Model 702i and 711i units are marked with the following symbols: CAUTION (per ISO 3864, No. B.3.1) – designates hazardous live voltage and risk of electric shock. - Page 28 Model 702i and 711i Technical Manual Section 5 Warning! The operator is strongly cautioned to take the following precautions to avoid contact with internal hazardous live parts that are accessible using a tool: 1. Turn the instrument power 2. Allow the instrument to sit for one minute before accessing internal components.
-
Page 29: Recycling
Section Recycling Ludlum Measurements, Inc. supports the recycling of the electronics products it produces for the purpose of protecting the environment and to comply with all regional, national, and international agencies that promote economically and environmentally sustainable recycling systems. To this end, Ludlum Measurements, Inc. -
Page 30: General Operation
Whenever the Model 702i or 711i unit is turned off, all information is saved on the CompactFlash card, allowing you to restart the instrument without losing calibrations or other information. The real-time clock has a separate internal lithium battery that keeps it running even when there is no other power source. - Page 31 Model 702i and 711i Technical Manual Section 7 In the upper-left corner is a battery icon, which appears green when the batteries have at least 10 minutes of useful life remaining. It appears yellow when the batteries have between 5 and 10 minutes left, and it appears red when the batteries have less than 5 minutes left.
- Page 32 Model 702i and 711i Technical Manual Section 7 Dial Figure 7 - Search Mode Screen The main purpose of the Dial screen is to provide a quick visual indication, similar to that given by a handheld dosimeter or Geiger counter, showing the amount of radioactivity being measured. When the dial pointer is in the gray area, there is little radioactivity present.
- Page 33 Model 702i and 711i Technical Manual Section 7 The Finder screen shows a similar type of count-rate based information. However, it is displayed as part of a bar graph that continually moves to the left at 10 steps every second. The full chart displayed on the screen represents approximately the last 20 seconds.
-
Page 34: Audible Search Setting
Model 702i and 711i Technical Manual Section 7 Spectrum Figure 10 - Search Mode Screen The Spectrum screen is designed for users with a health physics background to see the data collection and statistics in real time. Certain changes in the spectrum shape, such as that produced by beta particle interactions, can be interpreted by the trained eye, even when it cannot be identified by the automated algorithms. - Page 35 The ambient background spectrum is stored and then subtracted from all other collected spectra on a channel-by-channel basis before they are analyzed. It is easy to take a new background on the Model 702i or 711i unit. Simply select the Background soft key and press E .
-
Page 36: Identifying Sources Of Radiation
High radon levels. Identifying Sources of Radiation Once the Model 702i or 711i unit has helped you locate a radioactive material, it can help you determine the specific material that is present. The system has an internal library of over 85 nuclides. -
Page 37: Analysis Report
Model 702i and 711i Technical Manual Section 7 To collect data for identification, simply select the Identify soft key on the search mode screen. The system will immediately begin to collect data for identification. An example is shown in Figure 13, with the industrial nuclide Cs present. -
Page 38: Storing, Reviewing And Retrieving Spectra
The Model 702i and 711i can store nearly 10,000 spectra in its “catalog.” Each stored alarm consists of a spectrum and all the information necessary to analyze it. They are stored in a standard format designed to comply with ANSI N42.42. -
Page 39: Manual Calibration
Model 702i and 711i Technical Manual Section 8 Section Manual Calibration Occasionally, you may find it desirable to recalibrate your instrument manually, rather than relying on the built-in calibration mechanism. We recommend doing this calibration under the following circumstances: Perform a Coarse Calibrate with Cs and a background spectrum acquisition when you first install the instrument on site. - Page 40 Model 702i and 711i Technical Manual Section 8 Field Settings Coarse Calibrate Figure 15 - Menu with Selected You will now be prompted to place the Cs source near the detector, as shown in Figure 16. If you do not have the source nearby, you can ask the system to Wait (give you an extra minute) or Cancel if you made a mistake.
-
Page 41: Dose Rate And Fine Energy Calibration
Model 702i and 711i Technical Manual Section 8 Coarse Calibrate Figure 17 - Collecting Data When the process is complete, the system will beep three times (unless you have the sound turned off) and return to the Field Settings menu. -
Page 42: System Menus
Model 702i and 711i Technical Manual Section 9 Section System Menus Introduction Before describing each of the different menus in detail, this section shows and explains how to choose the menu, how to choose an item within the menu, and how each of several standard menu editing operations works. -
Page 43: Run A Procedure/Display Information/Open Submenu
Model 702i and 711i Technical Manual Section 9 Run a Procedure/Display Information/Open Submenu Perhaps the simplest type of menu item is one that runs a procedure, displays information (such as a help file), or opens a sub-menu. These all look the same on the screen, except for the name of the menu item. -
Page 44: Select Among Options
Model 702i and 711i Technical Manual Section 9 Select Among Options Some items give you a choice among different static options. Select Trigger List, shown here, gives you several standard options to choose from. Pressing the L or R arrow will change to the previous/next item in the list. The small... -
Page 45: Edit Numeric Value
Model 702i and 711i Technical Manual Section 9 Edit Numeric Value A few options, particularly those available to the Administrator, are numeric values that may need to be changed. The Dose Rate Alarm Level setting is shown here. There are two mechanisms for changing these values. When the menu item is first highlighted, pressing the L key will reduce the value to a smaller value –... -
Page 46: Edit Date For Filter
Model 702i and 711i Technical Manual Section 9 Edit Date for Filter When choosing a date for Spectrum Search Criteria menu, the menu item works in a way similar to the Edit Numeric Value function. Initially, Any date is allowed. - Page 47 Model 702i and 711i Technical Manual Section 9 Field Settings Figure 19 - User's Menu Select Trigger List The “Trigger List” is the list of all of the nuclides that are currently enabled for detection and analysis. Knowing the kind of nuclides you normally search for will help reduce false identifications.
- Page 48 Model 702i and 711i Technical Manual Section 9 Mute Speaker This option turns on and off the internal speaker – when the box is checked, the speaker is off. Display Contrast The display contrast may be increased or decreased. This option may aid readability after large temperature changes.
-
Page 49: Spectral Data
Model 702i and 711i Technical Manual Section 9 Spectral Data Figure 20 shows the Spectral Data menu. The items on this menu allow you to navigate through the stored spectra, search for particular spectra, review, and delete those spectra. This menu is the same for both User and Administrator modes. - Page 50 Model 702i and 711i Technical Manual Section 9 In this menu, you can set the Earliest Date and Latest Date for the search, so that only a specific set of spectra are considered. You can also restrict the search to a single Spectrum Type, such as “captured alarm”...
-
Page 51: Configuration
Model 702i and 711i Technical Manual Section 9 Figure 23 - Review Mode Dial Screen This display shows much of the same information as the search mode Dial screen, but for the spectrum being reviewed rather than for the live data. The soft keys Previous and Next will take you through the list of spectra you selected in the previous step (Figure 22), and the third item will let you see Dial, Bars, and Spectrum views of the data. -
Page 52: Help Menu
Model 702i and 711i Technical Manual Section 9 Capture Time The capture time setting determines the default for run time for the Identify operation. You can either change the default time here, or increase or decrease the time from the Identify screen itself. -
Page 53: Administrator Menus
Model 702i and 711i Technical Manual Section 9 To access any help item, highlight that item and press E . If a scroll-bar is shown on the right, NTER you may wish to scroll through the text using the U and D arrow keys. -
Page 54: Admin
Model 702i and 711i Technical Manual Section 9 this alarm but not the dose rate alarm. The system will flash the screen and sound an audio alert when this level is reached. Dose Rate Unsafe Level This setting determines the dose rate that will set off the personnel protection or “turnback”... - Page 55 Model 702i and 711i Technical Manual Section 9 Access Controls This item brings up a submenu for the currently selected log-in, either User (as shown above) or Admin. The login can be selected using the L or R arrow keys. The IGHT submenu is shown in Figure 28 and Figure 29.
- Page 56 Sample Time The Model 702i and 711i collects and analyzes spectra in real time. The Sample Time is the spectrum acquisition time, sometimes called the time slice. The recommended minimum sample acquisition time is one second; however, a three to five-second setting is recommended for dose rate monitoring.
- Page 57 Section 3. In order to establish communications between the PC and the Model 702i or 711i unit, the network information for the Model 702i or 711i must first be configured in the device, then entered into the software’s “Hardware Search” utility.
-
Page 58: Factory Settings
Model 702i and 711i Technical Manual Section 9 Figure 32 - Network Setup Dialog Each of the three items (IP Address, IP Subnet Mask, and IP Default Gateway) must be highlighted in turn. By pressing E , you can then edit each digit with the U...
Need help?
Do you have a question about the 702i and is the answer not in the manual?
Questions and answers