Model 54A

Small Article Monitor

Part Number: 48-3792

Features

• True 4π Counting Geometry for Optimized Homogeneous Efficiency
• QPASS Counting Technology for Shorter Counting Cycles
• 45 Liter (1.6 ft³) Detection Volume
• Color LCD with Touch Screen Interface
• USB Port for Printer-Free Operation & Calibration
• User-Selectable Operating Modes
• Auto Calibration Routine
• Several Configurations Available

Automated, routine contamination frisker type instruments like Ludlum's Small Article Monitor are part of a well-proven methodology for ensuring that items leaving controlled areas are clean. Ludlum's new Model 54A is a smaller version of the  Model 54 and incorporates identical field-proven algorithms and features. The 45.3 L (1.6 cubic foot) volume of the Model 54A offers greater convenience for monitoring smaller articles.   

Central to the design is the detector chamber, which is configured to deliver an optimized detection volume for articles that fit within the chamber. Thick 5 cm (2 in.) plastic scintillator detectors are specially designed and arranged to optimize the sensitivity throughout the chamber.  A stainless steel liner protects the detectors while facilitating decontamination. The chamber can be configured with either four or six detectors, and either 2.5 or 5.1 cm (1 or 2 in.) of lead. The lead is shipped separately and easily loaded on site.

The Model 54A is equipped with a single door, which can be mounted with either a left- or right-hand swing.  Hardened steel hinges, securely bolted to the instrument frame, employ ball-bearings to make operating the doors as easy as possible. Very powerful, non-jamming, electromagnet-activated door locks are employed to keep the door locked until the count is completed or until an alarm is cleared, depending upon the set-up.

Ludlum's new QPASS algorithms provide a means whereby administrators can optimize the settings best suited for their operations. QPASS additionally surpasses all other technologies via built-in intelligence that can automatically optimize settings as the count begins to deliver the most efficient and effective count possible. It's a perfect balance between minimum count time and maximum sensitivity that affords eliminating a second count to verify any alarms.

Operational status and instrument condition is clearly presented to the operator via a 17.8 cm (7 in.) LCD touch screen. The software displays are designed to be very intuitive and are accompanied by a large-size push-button to activate sample counting. There are also two smaller push-buttons for updating the background or acknowledging any alarms. The main counting screen is locked with password-controlled access via the touch screen. From the main screen, the user can perform either routine check functions at one level or access all parameters at a second level.

The electronics support the latest Ludlum detector boards, which are connected to a PC-based fan-less embedded computer running on Embedded Windows™ XP platform. The system also provides an ethernet port that enables connection to the site LAN for collecting all count and alarm data as well as monitoring all activities remotely from one or more locations.

When taken in total, the Ludlum Model 54A Small Article Monitor delivers state-of-the-art technology in a robust design with enhanced performance, user-friendliness, and connectivity at the lowest cost on the market.

• Specifications
• Available Configurations
• Options
• Documents

• Specifications
• Available Configurations
• Options
• Documents

Specifications

Chamber	Internal Dimensions (H x W x L): 35.6 x 35.6 x 35.6 cm (14 x 14 x 14 in.) Detection Volume: 45 L (1.6 ft3) Liner Material: Stainless Steel
Detectors	Four or six detector configurations available Scintillator: EJ-200 plastic Size (H x W x L): 33.0 x 33.0 x 5.1 cm (13.0 x 13.0 x 2.0 in.)
Door	Reversible door swing Door hinges are heavy duty rated, incorporating ball bearings for smooth operation Door locks to control single- or dual-door operation
Electronics	PC based, fanless controller motherboard running Embedded Windows™ XP Display: 17.8 cm (7.0 in.) (diagonal) TFT LCD, SVGA, touchscreen User Pushbutton Controls: Start/Stop Count, Background Update, Alarm Acknowledgement. All other control functions are available via the LCD touch screen. Password protection employed. I/O: Alarm and access control relays, USB ports, TCP/IP
Counting	Three alarm modes to maximize throughput, sensitivity, or fix the count time Alarms available for sum channels, sum zones, and individual detectors Automatic background updating Contaminated detector checking False alarm control Logs each use, operational test, and calibration
Performance	Detects 2.2 nCi mixed 60Co/137Cs source in under 5 seconds
Temperature Range	0 to 50 °C (32 to 122 °F)
Maximum Humidity	95% non-condensing
Power	100 to 240 Vac, 50–60 Hz single phase
Size (H x W x L)	94 x 68.6 x 80.0 cm (37 x 27.0 x 31.5 in.)
Weight	0 cm (0 in.) of lead: approximately 318 kg (700 lb) 2.5 cm (1 in.) of lead: approximately 771 kg (1700 lb 5.1 cm (2 in.) of lead: approximately 1247 kg (2750 lb) (Lead is shipped separately and installed on site)

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Available Configurations

Model	Description	Part Number
54A	6 detectors, 5.1 cm (2 in.) Pb	48-3792
54A-1	6 detectors, 2.5 cm (1 in.) Pb	48-3793
54A-4	4 detectors, 5.1 cm (2 in.) Pb	48-3802
54A-4-1	4 detectors, 2.5 cm (1 in.) Pb	48-3803

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Options

Option	Description	Part Number
Ludlum Universal Software	Collects and displays radiation levels and alarm status from multiple Ludlum instruments, including area monitors, sample monitors, and portal monitors. The instrument must be equipped with Ethernet interface. Using this interface, the area instrument can be connected to the network allowing for real-time monitoring of radiation data, email alerts, and database logging. A standard web browser is used to view the current status and query the data.	1370-093

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Documents

• Data Sheet
• Product Manual
• CE Certificate
• Ludlum Article Monitor Comparison Table

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