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Portable Survey Meters

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4525_truck_1941231767
4525_truck_19412317674525-14000_trainm4525-7500m4525-10000m4525-3500-det_1415185768m4525-2500-det_1335143326

Model 4525 Series

Radiation Portal Monitors

Features

  • Use to Monitor Trucks, Rail Cars, Personal Vehicles, etc.
  • Large, Highly Sensitive, Industrial Duty Plastic Scintillation Detectors
  • Reliable Operation with Very Low False Positives
  • Flexible Configurations Accommodate Up to Four Lanes, Each with Two to Six Detectors
  • Real-time Central Data Logging, Reporting, and Alarm Notification
  • Bi-Directional Entry
  • User-Friendly Operation
  • Excellent Service and 24-Hour Tech Support
  • 8-hour Battery Backup in Event of Power Loss
  • Modular and Upgradeable
  • Variety of Options to Customize the System to Meet Your Needs
  • Made in USA

Gen 5 Enclosures
Updated Enclosures

All Model 4525 systems with 57 L (3500 in3) detectors now come with new 5th generation NEMA 4 enclosures.

The new enclosures are manufactured with a 14-gauge carbon steel body and a 2 mm (0.080 in.) aluminum door for increased sensitivity. Using stainless steel concealed hinges and quarter turn latches for easy accessibility, they are 70 mm (2.75 in.) slimmer than the previous generation, reducing waste and cost.

Ask about our NEMA 4X stainless steel upgrade option for increased corrosion protection!

Fog-Free Plastic

Fog-Free Plastic Scintillator
Detector Option

Longer Lifetime Than Conventional Plastic Scintillators

More Resistant to Moisture Absorption

Can Withstand Large Temperature Variations

Learn More
Dual Channel

Dual Channel Feature

Increased Detector Sensitivity

Two Gamma Channels - Hi and Low

Allows Better Determination of Radiation Source Type

PlayPause

  • Introduction
  • Configurations
  • Specifications
  • Software
  • Options
  • Documents
  • Video
  • Introduction
  • Configurations
  • Specifications
  • Software
  • Options
  • Documents
  • Video

Introduction

The Model 4525 Series of Radiation Portal Monitors (RPMs) represents state-of-the-art technology for detecting low levels of radiation, such as orphan radiation sources and NORM (naturally occurring radioactive materials), at facilities including scrap yards, recycling companies, landfills, and foundries. These systems are composed of ruggedized, large plastic scintillation detectors optimally arranged to monitor items passing through. Each system can be configured with two to six large detectors, with individual detector volumes of 9.8 L (600 in3), 41 L (2500 in3), or 57 L (3500 in3).

Real-time data acquisition and analysis is performed directly at each detector system and then reported to a central PC for logging, reporting, and alarm notification. Up to four detector systems (lanes) can be networked together via Ethernet or wirelessly to a central PC so that vehicles entering from either direction can be monitored in real time. An optional remote control/annunciator panel is available to support operator awareness, alarm acknowledgement, and if necessary, backup operation in the event the central PC is unavailable.

Data from all the system sensors are acquired and checked by powerful, field-tested, and time-proven algorithms designed to check each load vigorously in a multi-dimensional and multi-layered manner before declaring any load as clean. Any abnormality is immediately indicated via both local and remote alarms. An optional camera system can capture an image of the offending vehicle and store the image with the logged data for permanent record keeping. Alarms can also be configured to automatically notify shift supervisors directly by e-mail if desired.

The system is designed for ease of use and can be customized to accommodate a wide variety of site and application specific criteria. Intuitive menus and controls combined with pre-defined automatic event handlers ensure each situation is handled properly and consistently.

All of the main components of these systems are manufactured in-house in the USA.

LMI has Model 4525 Series systems installed worldwide. Click here to view a map of the Model 4525 installations.

Retrofit Option

Ludlum Measurements offers the option to retrofit existing portal monitor systems with the electronics and software used in our Model 4525 Series, including systems manufactured by our competitors. Retrofitting allows you to upgrade an aging system without having to purchase new detector housings and stands. Besides our own systems, Ludlum has experience retrofitting systems manufactured by Exploranium, RadComm, SAIC, Mirion/Canberra, and Thermo. Retrofits are customized to your needs, and can also include replacing the plastic scintillator detectors if necessary. Please contact us with your requirements.

Configurations

Ludlum offers several different RPM systems. Each 4525 Series model number suffix reflects the approximate total cubic inches of scintillation material used by the combined system.

 

Detector Size: 9.8 L (600 in3)

M4525-2400

Model 4525-2400
PN: 48-3908

Detectors: 4
Total Detector Volume: 39 L (2400 in3)

Detector Size: 41 L (2500 in3)

M4525-5000

Model 4525-5000
PN: 48-4018

Detectors: 2
Total Detector Volume: 82 L (5000 in3)

M4525-7500  

Model 4525-7500
PN: 48-4020

Detectors: 3
Total Detector Volume: 123 L (7500 in3)

M4525-10000

Model 4525-10000
PN: 48-4019

Detectors: 4
Total Detector Volume: 164 L (10000 in3)

M4525-12500

Model 4525-12500
PN: 48-4021

Detectors: 5
Total Detector Volume: 205 L (12500 in3)

M4525-15000

Model 4525-15000
PN: 48-4022

Detectors: 6
Total Detector Volume: 246 L (15000 in3)

Detector Size: 57 L (3500 in3)

M4525-7000

Model 4525-7000
PN: 48-3605

Detectors: 2
Total Detector Volume: 115 L (7000 in3)

M4525-10500  

Model 4525-10500
PN: 48-3606

Detectors: 3
Total Detector Volume: 172 L (10500 in3)

M4525-14000

Model 4525-14000
PN: 48-3607

Detectors: 4
Total Detector Volume: 229 L (14000 in3)

M4525-17500

Model 4525-17500
PN: 48-3608

Detectors: 5
Total Detector Volume: 287 L (17500 in3)

M4525-21000

Model 4525-21000
PN: 48-3609

Detectors: 6
Total Detector Volume: 344 L (21000 in3)


Specifications

Base System

  • Two to six plastic scintillation detectors
  • High gain, low noise, 2 in. dia. photomultiplier tubes (PMTs), 2 ea. per detector; Dual PMT design delivers 30% more efficiency than single PMT designs
  • Shock protection to resist vibration-induced noise
  • Thermal protection to avoid temperature shock
  • Carbon steel frame and detector enclosure
  • NEMA 4 rated control box and detector enclosures with white powder-coat for environmental protection
  • 6.4 mm (0.25 in.) thick lead shielding on five sides of detector to reduce background
  • Low density aluminum detector door for enhanced low energy measurements
  • Dual-Channel: Increased sensitivity by analyzing separate Hi and Low Gamma channels with independent thresholds and alarm ratios
  • Two pairs of IR sensors
  • Alarms: Radiation, Overspeed, Detector Fail
  • Model 4525 Series Vehicle Monitoring Software
  • Reporting Feature
  • Computer Requirements – Windows 7 or higher
  • Power: 120 - 240 Vac, 2 A
  • Temperature Range: -40 to 150 °F (-40 to 65 °C)

Software

Vehicle Monitoring Software

  • Supports Up To 4 Lanes
  • 8 Relay Outputs for Options
  • Radiation Profile
  • Data Logging with Automatic Daily Back-Up

The base Model 4525 Series system includes vehicle monitoring software for the system control computer that can be used to monitor up to four separate Model 4525 Series configured systems (lanes) via an Ethernet or wireless connection. The software automatically collects and archives data from all available lanes, displays alarms, and generates reports. When equipped with optional cameras, the system can be configured to automatically capture images of vehicles passing through the system, either every vehicle or only those triggering an alarm, and store the images in the database.

The vehicle monitoring software has three main component programs:

  • Supervisor: Collects all data, saves to databases, and contains all parameter settings. It displays alarms and provides all control over the system.
  • Echo: Used for remote monitoring. It mirrors the Supervisor component and performs all alerting and reporting functions, but does not allow any control functions. Up to 10 Echo stations can be configured per Supervisor computer. Each Echo station can monitor an unlimited number of Supervisor computers.
  • Data Viewer: Used to query the databases (background, alarms, and event log), filtering records based on date, alarm, and lane number. The Data Viewer can also reprint an alarm report, print summary reports for user-defined data and time ranges, and create new databases based on the current search queries.

Reporting Feature

Ludlum’s reporting feature accumulates the data, and sends you an easy-to-read report on a regular basis (weekly, monthly, or quarterly) about the activity during that time frame.

Reports include:

  • How many vehicles passed through the system
  • How many radiation alarms occurred
  • Detail (date, time, extent) of radiation alarms
  • How many overspeed alarms occurred
  • Any other failure alerts or messages
  • Any unusual background radiation issues
  • Indication if vehicles are parking the system for too long
  • Indication if parameters have been changed

When you receive these reports on a regular basis, it’s easy to see when something changes, or when you need to address a training or hardware problem. You determine how often to get these reports, and you can also choose to have Ludlum technicians review the data for an additional fee.

(click images to view larger)

m4525 supervisor main
m4525 supervisor alarm window
m4525 data viewer alarm
m4525 data viewer profile samples
m4525 report summary

Options

Recommended Options

  • Remote Annunciator Panel (4517-608-100): Provides audible and visible alarm annunciation. Includes 30.5 m (100 ft) cable (other cable lengths available).
    • LED status indicators: POWER OK, CHECKING, GAMMA ALARM, OVERSPEED ALARM, INSTRUMENT FAIL, USING BATTERY POWER
    • Controls: Reset button
    • Audio Alarm: 85 dB at 30.5 cm (1 ft.)
    • Size (H x W x L): 28.6 x 9.0 x 7.3 cm (11.25 x 3.5 x 2.89 in.)
    • Weight: 0.7 kg (1.5 lb)
  • Additional Two Pairs of IR Sensors (4511-990-01)
  • Stainless Steel Control Box and Detector Enclosure Upgrade
  • Fog-Free Plastic Scintillation Detector Upgrade
    • Longer lifetime than conventional plastic scintillators
    • More resistant to moisture absorption
    • Can withstand large temperature variations

Other Available Options

  • Detector Stand Set (see table below)
  • Strobe & Horn (4517-073): 12 Vdc strobe and horn assembly with 9.1 m (30 ft.) cable
    • Light Intensity: 150 candlepower (LED array)
    • Flash Rate: Three selectable patterns - Flash mode (150 ± 10 flashes per minute), Strobe mode (72 ± 10 flashes per minute), Random mode
    • Audio: 65 to 115 dB at 1 meter (3.3 ft)
    • Temperature Range: -30 to 50 °C (-22 to 122 °F)
  • Strobe (8517-025): 12 Vdc strobe with 9.1 m (30 ft.) cable
  • Wireless System (4558-048): An antenna that establishes a point-to-point wireless network for sending data from detector systems to monitoring stations.
    • Pole- or wall-mounted
    • Max. Power Consumption: 6 W
    • Power: 24 V, 0.5 A PoE adapter (included)
    • Size (H x W x L): 14 x 14 x 5.4 cm (5.51 x 5.51 x 2.13 in.), including mount
    • Weight: 320 g (11.3 oz), including mount
    • Data Sheet
    • Quick Start Guide
  • Neutron Detection Capability
  • Indoor/Outdoor Bullet Camera Kit (4511-448)
  • Control Computer with Printer and Wall Mounting Brackets
    • 55.9 cm (22 in.) LCD monitor with HDMI and built-in speakers
    • Ethernet network capability
    • Uninterruptable power supply (UPS)
    • Color laser printer
    • USB keyboard with built-in touchpad

remote annunciator
Remote Annunciator Panel

strobe and horn
Strobe and Horn

wireless system antenna
Wireless System

bullet camera
Bullet Camera

Detector Stands

DescriptionPart Number
Model 4525-2400 Stand Set 4511-622
Model 4525-5000 Stand Set (2 Panels) 4511-928
Model 4525-7500 Stand Set (3 Panels - 1 Overhead) 4511-987
Model 4525-10000 Stand Set (4 Panels) 4511-989
Model 4525-12500 Stand Set (5 Panels - 1 Overhead) 4511-993
Model 4525-15000 (6 Panels - 2 Overhead) 4511-994
Model 4525-5000 Series Overhead Add-On
(for -5000, -7500, -10000, -12500, -15000)
4511-975
Model 4525-5000 Series Steel Back-Plate & Bolts
(for -5000, -7500, -10000, -12500, -15000)
4511-926
Model 4525-5000 Series Anchor Bolt Kit
(for -5000, -7500, -10000, -12500, -15000)
4511-550
Model 4525-7000 Stand Set (2 Panels) 4384-850
Model 4525-10500 Stand Set (3 Panels - 1 Overhead) 4384-1003
Model 4525-14000 Stand Set (4 Panels) 4384-849
Model 4525-17500 Stand Set (5 Panels - 1 Overhead) 4384-1088
Model 4525-21000 Stand Set (6 Panels - 2 Overhead) 4384-1089
Model 4525-7000 Anchor Bolt Kit 4511-549

Documents

  • Data Sheet Model 4525 Series
  • Data Sheet Model 4525-5000
  • Data Sheet Model 4525-7000
  • Data Sheet Model 4525-14000
  • Operator Manual
  • Model 4525 (Gen. 3) Installation Manual
  • Model 4525 (Gen. 4) Installation Manual
  • Model 4525 (Gen. 5) Installation Manual
  • Ethernet Manual Addendum (for instruments with ESP32 Ethernet board)
  • Non-Fogging Plastic Scintillation Detectors Whitepaper
  • Model 4525 Parts Catalog

Video

Model 4525 Series Overview


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