ASM™ IV Series Automatic Scrap Monitoring System

The increase in scrap metal recycling results in a higher quantity of scrap with uncertain quality and origins. Workers who handle radioactively contaminated scrap pose a risk, as do consumers of products made from recycled scrap metal.

Thermo ScientificASM IV Series Automatic Scrap Monitoring System provides precise, dependable radiation source detection for scrap metal by monitoring vehicles entering the scrap yard or processing within the facility. The system rejects radioactive materials before they have the potential to cause harm to people or the environment, exhibiting high performance and a low false alarm rate.


Source: Thermo Fisher Scientific – Handheld Elemental & Radiation Detection

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Detector Type Plastic Scintillation
Power Requirements 100 to 230 VAC
Product Type Automatic Scrap Monitoring System
Detection Volume Single: 1440 in.3; Double: 2880 in.3; Enhanced: 3168 in.3
User Interface Keypad/touchscreen.
Width (English) System Control Unit: 14 in.; Radiation Detector Modules: Single: 18 in.; Double: 72 in.; Enhanced: 36 in.
Width (Metric) System Control Unit: 356 mm; Radiation Detector Modules: Single: 457 mm; Double: 1829 mm; Enhanced: 914 mm
Depth (English) 4.25 in., 10 in.
Depth (Metric) 108, 254 mm
Radiation Type Gamma
Height (English) System Control Unit: 16 in.; Radiation Detector Modules: Single: 72 in.; Double: 36 in.; Enhanced: 72 in.
Height (Metric) System Control Unit: 406 mm; Radiation Detector Modules: Single: 1829 mm; Double: 914 mm; Enhanced: 1829 mm
Weight (English) System Control Unit: 19.2 lb.; Radiation Detector
Weight (Metric) 8.7 kg (System Control Unit), 54 kg (Radiation Detector Module Single), 340 kg (Radiation Detector Module Double), 340 kg (Enhanced)
Description ASM IV Automatic Scrap Monitoring System
Detection Surface Area Single: 720 sq. in.; Double: 1440 sq. in.; Enhanced: 1584 sq. in.
Display Type LCD
Relative Humidity 10 to 93%, Non-Condensing
Temperature (English) Operating System Control Unit: 32 °F to 104 °F; Radiation Detector Modules: -22 °F to +140 °F
Temperature (Metric) Operating System Control Unit: 0 °C to 40 °C; Radiation Detector Modules: -30 °C to +60 °C
Voltage 100 to 230 VAC
Alarms Audible and Visual
Amperage 1.5 A
Certifications/Compliance Safety: UL/CSA/EN 61010; Electromagnetic Compatability/CE: EN 61326, EN55011, 2007 +A2:2007; FCC: Subpart B(Class A)
Data Memory 16 GB
Detectors 2 to 16 ea.
Energy Range 20 Kev to 3 Mev; ™incident on plastic scintillator
False Alarm Rate 1/1000
Storage Temperature System Control Unit: -40 °F to +158 °F
Unit Size Each


Product Overview

The ASM IV Series Automatic Scrap Monitoring System is designed to detect undesired radiation sources accurately and reliably in a highly rugged environment. It is based on the high-performance Thermo Scientific X-Channel platform, which runs Linux.

Optimized Radiation Detector Modules (RDM)

  • A rugged, industrial solid-state, dedicated-purpose System Control Unit (SCU) with a stable platform.
  • Detectors of suitable size and shape are configured to match the facility's and vehicles' requirements.
  • Multiple methods for system communication.
  • The critical starting point is having a System Control Unit (SCU) purposely designed for a harsh industrial environment.


  • Industrial spring clamp DIN terminal rails offer a highly reliable, quick, and simple installation process.
  • Low-energy gamma radiation can be transmitted through an aluminum door and a stainless steel housing coated in white powder to prevent corrosion.
  • Standard lead shielding and industrial anti-vibration shock mounts limit external interference.
  • A lockable three-point latch door closure mechanism is used to provide security.
  • 1584 cubic inch (26L) premium PVT scintillators and high gain PMT assemblies.


  • Precision cast metal housing with wall or bench mounting options provides industrial toughness and simplicity of installation.
  • All components are solid-state, including disc storage for high reliability.
  • No cooling fans or filters to fuss with or fail.
  • Linux operating system for high performance, high reliability, and longevity.
  • A large touchscreen display makes clear operator communication possible, clearing up desk clutter from keyboards and mice.
  • Ultra bright, long-lasting LEDs and membrane push-button switches are used to provide clear status information and repeated acknowledgment to the touch screen.
  • USB and RJ45 Ethernet ports are available for convenient networking and auxiliary device connections for remote monitoring.
  • There are four configurable input and four configurable output ports for interacting with external devices.

System Control Unit Specifications


Source: Thermo Fisher Scientific – Handheld Elemental & Radiation Detection

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Power Requirements: 100 to 264 VAC RMS, 47 to 63 Hz, 1.5A; Internal switch-mode AC/DC power supply capable of providing 12 VDC and 5 VDC f o r components internal to the unit; Isolated switch-mode AC/DC power supply capable of supplying 24 VDC to the detectors, Detector Interface Unit, and discrete I/O ports Regulatory Compliance Safety: UL/CSA/EN 61010-1; Electromagnetic Compatibility for Emissions & Immunity both Radiated and Conducted: EN 61326, EN 55011: 2007 +A2:2007; FCC Subpart B (Class A); RoHS: RoHS compliant
Operating Temperature: 0° to 40 °C (32° to 104 °F) I/O Interfaces: Detector Interfaces: Two twisted pair conductors for supplying power (24VDC) and communications (RS-485) to ASM IV detectors (RDMs) plus supplemental Power Interface for special applications; 10/100 Base-T Ethernet jack (RJ45) for remote communication; Two powered USB v2.0 ports to accommodate external USB peripherals; Four user software configurable relay outputs (2A); Four optically isolated, general-purpose user configurable discrete inputs
Storage Temperature: -40° to +70 °C (-40° to +158 °F) User Interface: 12.1-in LCD panel; touch screen interface; loudspeaker; three membrane keypad pushbuttons with tactile feedback provided for system control and alarm acknowledgement; six LED indicators provided for system status; optional USB thermal ticket printer
Humidity: 10-93% relative humidity, non-condensing CPU and Memory: ETX 3.0 processor board; X-Channel mother and daughter (interface) boards; Linux Operating System; Vented back cover provides passive cooling for CPU and other electronics; 16-GB internal solid state hard drive (data files); 8-GB compact flash (program files)
Altitude: Sea level to 10,000 feet Reality-Based Algorithms: Dynamic vehicle profiling and background suppression compensation with 1/16th sec resolution and sum/individual channel alarms
Dimensions: 406 x 356 x 108 mm (16 x 14 x 4.25 in.), 8.7kg (19.2 lb.)  


Radiation Detector Module Specifications


Source: Thermo Fisher Scientific – Handheld Elemental & Radiation Detection

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Operating Temperature: -30° to +60 °C (-22° to +140 °F) RDM Spacing: 4.2 m (14 ft.) or less for best performance
RDM Sizes Single: 23.60 liters (1440 in3), Double: 47.19 liters (2880 in3) and Enhanced: 51.91 liters (3168 in3) active volume RDM Enclosure Dimensions: Single: 1981 x 457 x 254 mm (78 x 18 x 10 in.), 154 kg (340 lb.) Double/enhanced: 1981 x 914 x 254 mm (78 x 36 x 10 in.), 340 kg (750 lb.)
RDM Enclosure Assembly: Weatherproof, lead-lined stainless steel NEMA-rated enclosures RDM Access: Gasketed aluminum door with 3-point latch
RDM Integral Shielding: 1/8-in. lead shielding  

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