Menu
  • Home
  • Products
    • All Products
    • Health Physics
    • Medical Physics
    • Metal Recycling
    • Monitoring Systems
    • Emergency Response
    • How To Order
    • Connector Types
  • Support
    • Service Center
    • Training
    • Product Videos
    • Webinars
    • Software & Firmware Downloads
    • Rad Pro Calculator
    • Warranty Plans
    • Radiation Resources
    • Field Service Support
  • Documents
    • Product Manuals
    • Detector Reference Chart
    • Response Curves
    • Test Reports
    • Newsletter Archive
    • Technical Articles
    • End User Statement Form
    • Price List
  • Company
    • About Us
    • Ludlum Family of Companies
    • Directions to Facilities
    • Exhibition Schedule
    • ISO 9001 Certificate
    • ISO/IEC 17025 Accredited
    • Radioactive Material Licenses
    • Mobile App Privacy Policy
    • Sales Tax Business Licences
    • Terms & Conditions
    • Export Information
    • Ethics Policies
  • Careers
  • Contact Us
    • Ludlum Headquarters
    • U.S. Contacts
    • International Contacts
    • Sales Contact Form
    • Feedback Form
Ludlum Measurements Logo
(800) 622-0828 (US, CA)
(325) 235-5494
(325) 235-4672



Field Service Support

To search products by model number, enter "m..."
(Ex: Enter "m3" to search for Model 3.)

  • Home
  • Products
    • All Products
    • Health Physics
    • Medical Physics
    • Metal Recycling
    • Monitoring Systems
    • Emergency Response
    • How To Order
    • Connector Types
  • Support
    • Service Center
    • Training
    • Product Videos
    • Webinars
    • Software & Firmware Downloads
    • Rad Pro Calculator
    • Warranty Plans
    • Radiation Resources
    • Field Service Support
  • Documents
    • Product Manuals
    • Detector Reference Chart
    • Response Curves
    • Test Reports
    • Newsletter Archive
    • Technical Articles
    • End User Statement Form
    • Price List
  • Company
    • About Us
    • Ludlum Family of Companies
    • Directions to Facilities
    • Exhibition Schedule
    • ISO 9001 Certificate
    • ISO/IEC 17025 Accredited
    • Radioactive Material Licenses
    • Mobile App Privacy Policy
    • Sales Tax Business Licences
    • Terms & Conditions
    • Export Information
    • Ethics Policies
  • Careers
  • Contact Us
    • Ludlum Headquarters
    • U.S. Contacts
    • International Contacts
    • Sales Contact Form
    • Feedback Form
Health Physics Medical Physics Metal Recycling Monitoring SystemsEmergency Response

Emergency Response

Emergency Response Kits

  • General Response Kits
  • Medical Response Kits
  • Decontamination Kits

Portal Monitors

No subcategories

Isotope Identifiers

No subcategories

Personal Radiation Meters

No subcategories

Friskers

No subcategories

Need Help?

Unsure about which instrument is best for your application?

Find your region's Ludlum representative or dealer.

  • US Contacts
  • International Contacts

OR

Contact Ludlum Sales:

(800) 622-0828 (USA Toll Free)

(325) 235-5494

Newsletter

Subscribe to our customer newsletter! Stay informed about Ludlum products and services, and get helpful support tips.

Please enable the javascript to submit this form

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

m52-8_with_car
m52-8_with_carm52-8_with_personm52-8_j3m52-8_electronics-1

Model 52-8 Series

Outdoor Portal Monitor

Features

  • Portable Weatherproof Monitor
  • Deploys in 5 Minutes
  • Vehicle or Personnel Screen Compatibility
  • Audible & Visual Alert Signals
  • Two Sizes: 15.7 L (960 in3) or 32.7 L (2000 in3)

The Model 52-8 is a weather-resistant portable scintillation portal monitor used for beta-gamma radiation monitoring of vehicles, as well as monitoring of personnel. Two plastic scintillation detectors, one per side, are housed in weatherproof, dust-tight, impact-resistant cases with wheels and tow handles. Microprocessor-based electronics are housed in a third case with matching characteristics, plus a mounted On/Off toggle switch and an optional red/green strobe light. The system provides high sensitivity for detecting very low levels of radiation coming from personnel or vehicles that move through the portal.

Ease of setup, adjustable audio signals, and user-friendly LCD display that provides detector counts, background levels, and system parameters, and the ability to operate via vehicle cigarette lighter plug or batteries, keep the Model 52-8 applicable to a variety of different situations. This instrument meets the Federal Emergency Management Agency (FEMA) standard for Emergency Management Response Portal Monitoring (FEMA-REP-21).

 

  • Available Configurations
  • Specifications
  • Options
  • Documents
  • Available Configurations
  • Specifications
  • Options
  • Documents

Available Configurations

ModelTotal Detector VolumePart Number
52-8/1 15.7 L (960 in.3) 48-4251
52-8/2 32.7 L (2000 in.3) 48-4237

Specifications

Application Beta-gamma radiation monitoring 
Detectors 52-8/1: Plastic scintillator, Total volume: 15.7 L (960 in.3)
52-8/2: Plastic scintillator, Total volume: 32.7 L (2000 in.3)
Sensitivity 1 µCi 137Cs with detectors spaced no more than 1.2 m (48 in.) apart
Gamma Energy Response 60 keV to 3 MeV
Display 2-line-by-20-character backlit LCD housed inside the electronics case
Count Time Adjustable from 0 to 20 seconds ("0" indicates walk-through mode)
Infrared Sensor Senses portal occupancy
Output +12 V relay for radiation alarm and failure conditions
Audio An alarm and incomplete audio, and a continuous beeping for Radiation Alarm and Instrument Failure modes
Detector Cable Length 9 m (30 ft) standard length (other lengths available)
Power +12 Vdc input (with 1 A fuse) inside the cigarette adapter plug, or 6 D cell batteries
Battery Life Typical battery life is 44 hours using fresh alkaline batteries
Construction Waterproof and dustproof polyethylene cases
Environmental Rating IP67
Dimensions (H x W x L) Detector Cases: 40.6 x 20.3 x 142 cm (16 x 8 x 56 in.)
Electronics Case: 52 x 45 x 22 cm (20.3 x 17.7 x 8.7 in.)
Detector Weight 52-8/1: 23 kg (52 lb) in case
52-8/2: 32.7 kg (72 lb) in case
Electronics Case Weight 8 kg (18 lb) with attached cables

Options

OptionDescriptionPart Number
Bluetooth® Option Internal board that connects to power and serial out, and takes the place of having a printer to log information. It wirelessly transmits data to a remote smart phone, laptop, or other device for logging. Range is approximately 10 m (33 ft). On startup, the remote device will receive a setup parameter list, and then (depending on firmware) the remote device will get a short report on every occupancy or just those occupancies that cause a radiation alarm. 4215-1140

Documents

  • Data Sheet
  • Product Manual

Ludlum Measurements, Inc.
501 Oak Street
Sweetwater, TX 79556
USA

(800) 622-0828 (US & Canada)
(325) 235-5494
(325) 235-4672

All Products

Service Center

Training

About Us

Careers

Ludlum Family

Directions to Facilities

U.S. Contacts

International Contacts

Privacy Policy

Follow Us

LinkedIn

Facebook

YouTube

© 2025 Ludlum Measurements, Inc.