Radiation Safety & Protection, LLC


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​Ludlum Portal Radiation Monitors


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Model 52-1
Ludlum Part Number: 48-3172
Beta/Gamma Personnel Portable Portal Radiation Monitor
Four 168 in³ Plastic Scintillation Detectors
Portable, ​Sets Up In Minutes, ​Easy to Operate
24 in. Wide Opening
Wheeled Transport Case Included​
Meets FEMA-REP-21​
​Excellent For Detecting Surface Radiation Contamination
Includes Sleeve for Weather Protection
Optional Vehicle Conversion Kit (P/N 4215-374)
Water-Resistant Version Available (P/N 48-4300)
​Model 52-1 Data Sheet
Model 52-1W Data Sheet (water-resistant version)
Product Manual
Georgia Emergency Management Application Note

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Model 52-1-1
Ludlum Part Number: 48-3258
​Beta/Gamma Personnel Portable Portal Radiation Monitor
Four 168 in³ Plastic Scintillation Detectors
Portable, ​Sets Up In Minutes, ​Easy to Operate
32 in. Wide Opening (Gurneys, Wheelchairs)
Wheeled Transport Case Included​
Meets FEMA-REP-21​
​Excellent For Detecting Surface Radiation Contamination
Includes Sleeve for Weather Protection
Optional Vehicle Conversion Kit (P/N 4215-374)​
Water-Resistant Version Available (P/N 48-3516)
Model 52-1-1 Data Sheet
Model 52-1-1W Data Sheet (water-resistant version)
Product Manual
Georgia Emergency Management Application Note

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Model 53
Ludlum Part Number: 48-3784
Gamma Radiation Personnel Portal Monitor
8 Identically-Sized Plastic Scintillation Radiation Detectors
Fast Alarm/Fast Clean Counting Technolog for Shorter Counting Cycles
9 in. Color LCD's at Ingress and Egress
3 Counting Modes and 4 User Modes
Individual Detector and Sum Channel Alarms
Automatic Background Updating
Recount and Contaminated Detector Check
​​​Passive Infrared Sensor to Sense Approach
Photoelectric Sensor to Detect Presence
1 in. Thick Lead Shielding, with Option for 2 in.​
Option for Implementing Transmission Factors According to User's Weight
USB Port for Printer-Free Operation/Calibration
Ethernet Connectivity
Optional Ludlum Universal Software (P/N 1370-093)​
Model 53 Data Sheet
Model 53B Data Sheet (beta-gamma version)
Product Manual


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Radiation Safety & Protection, LLC
6555 Sugarloaf Parkway  Suite 307-333  Duluth, GA 30097
Phone: (770) 363-0925  Email:  [email protected]

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