Skip to Content

1.800.661.4591

Request a Quote Online Training

Nuclear Medicine / Monitoring Systems

Area Monitor Controllers

Model 375
Area Monitor Controller
  • Digital Controller for Radiation Monitoring
  • Supports GM, Proportional, Scintillator & Neutron Detectors
  • Adjustable Audio & Visual Alarms
Model 375-Dual
Dual Channel Area Monitor Controller
  • Digital Controller for Radiation Monitoring
  • Dual Channel
  • Supports GM, Proportional, Scintillator & Neutron Detectors
  • Adjustable Audio & Visual Alarms

 

Model 3276
Multipurpose Digital Meter
  • Auto-Ranging Digital Meter
  • Functions as a Frisker or an Area Monitor
  • Supports GM, Proportional & Scintillation Detectors
  • Adjustable Audio & Visual Alarms
  • HV Range: 500 to 1500 V 

Area Monitoring Systems

Model 375/1
Digital Area Monitor
  • Detector Type: Internal 18 mm CsI Detector
  • Linear Range: 0.1 to 9999 µR/hr
Model 375/2
Digital Area Monitor
  • Detector Type: Internal Energy Compensated GM
  • Linear Range: 1.0 µSv/h to 10 mSv/h (0.1 mR/hr to 1.0 R/hr)
Model 375/4
Digital Area Monitor
  • Detector Type: Internal Energy Compensated GM
  • Linear Range: 10 µSv/h to 100 mSv/h (1.0 mR/hr to 10 R/hr)

 

Model 375-9
Gamma Area Monitor
  • Detector Type: External Model 45-9 Ion Chamber
  • Linear Range: Any 4 Consecutive Decades Between 0.1 mR/hr to 100 R/hr

 

Model 375-10
Digital Area Monitor
  • Detector Type: Internal NaI Scintillator 5.1 x 5.1 cm (2.0 x 2.0 in.) 
  • Linear Range: 0.1 to 20 µSv/h (1 to 2000 µR/hr)
Model 375-31H
Area Monitor with Neutron Detector
  • Digital Area Monitor
  • 3He Proportional Detector
  • Moderator: 22.9 cm (9.0 in.) dia.
  • Sensitivity: 10,000 cpm per mSv/h (100 cpm per mrem/jr)
  • Range: 0 to 100 mSv/h (0 to 10 rem/hr)

Portal Monitors

Model 52
Portable Portal Monitor
  • Beta-Gamma Portal Monitor
  • Inside Width: 81.3 cm (32 in.)
  • Side & Foot GM Detectors
  • Portable
Model 52-1, 52-5 & 52-6 Series
Portable Portal Monitors
  • Beta-Gamma Portal Monitor
  • Inside Width: 61 cm (24 in.) or 81.3 cm (32 in.)
  • Plastic Scintillator Detectors
  • Portable
Model 52-8 Series
Outdoor Portal Monitor
  • Beta-Gamma Portal Monitor
  • Plastic Scintillator Detectors
  • Weatherproof
  • Portable
Model 53
Gamma Personnel Portal Monitor
  • Inside Width: 61 cm (24 in.)
  • Plastic Scintillator Detectors
  • Lead Shielding

Monitoring Systems

Model 375-20
Monitoring System
  • Two 5.1 x 5.1 cm (2 x 2 in.) (Dia x L) NaI(Tl) Scintillator Detectors
  • Lead Shielding
  • Indoor/Outdoor Use
Model 375-30 Monitoring System

The Model 375-30 is a digital Model 375 Controller coupled to two shielded 7.6 cm (3 in.) diameter by 2.5 cm (1 in.) thick NaI(Tl) scintillation detectors. The detectors are encased in NEMA 4X rated weathertight enclosures suitable for the outdoor environment, but the 375 Controller is normally mounted to a wall indoors near an operator. This cost-effective system is simple, making it easy to operate and maintain. The controller supplies local alarms but can also be connected to external alarms or  put onto an Ethernet network if desired. It additionally has a 48-hour battery backup to keep the system operational in the event power is lost. See Model 375 for additional detail and available options.

Model 375P-336 Series
Monitoring System
  • Two 2753 cm3 (168 in3) Plastic Scintillator Detectors
  • Range: 0 to 9999 kcps
  • Indoor or Outdoor Use Depending on Model
Model 375P-1000
Outdoor Monitoring System
  • Two 7866 cm3 (480 in3) Plastic Scintillator Detectors
  • Range: 0 to 9999 kcps
  • Outdoor Use
Model 375P-2000
Outdoor Monitoring System
  • Four 7866 cm3 (480 in3) Plastic Scintillator Detectors
  • Outdoor Use

Contamination Monitors

Model 239-1F Series
Alpha-Beta Floor Contamination Monitor
  • Alpha-Beta-Gamma Gas Proportional Detector
  • Active Window Area: 584 cm2 (90.5 in2)
  • Adjustable Detector Height
Model 3002/FM Series
Alpha-Beta Floor Monitor
  • Alpha-Beta Scintillation Detectors
  • Active Window Area: 400 or 1080 cm2 (62 or 167.4 in2)
  • 22.4, 40.9, or 65.7 cm (8.8, 16.1, or 25.9 in.) Wide Detection Path
  • Adjustable Detector Height
Model 240 Series
Alpha-Beta Floor and Wall Monitor
  • 12 Alpha-Beta Detector Array
  • 173 cm (68 in.) Wide Detection Path
  • Floor and Wall Monitoring

Article Monitors

Model 54
Small Article Monitor
  • Chamber (H x W x L): 50.8 x 50.8 x 50.8 cm (20 x 20 x 20 in.)
  • 2 Doors
Model 54A
Small Article Monitor
  • Chamber (H x W x L): 35.6 x 35.6 x 35.6 cm (14 x 14 x 14 in.)
  • 1 Door
Model 54R Series
Retrofit Option for Small Article Monitor
  • Retrofit Existing Small Article Monitor with Model 54 Functionality
Model HWM-21
Small Article Monitor
  • Retrofit Existing Small Article Monitor with Model 54 Functionality
Model HWM-65
Small Article Monitor
  • Chamber (H x W x L): 400 x 400 x 400 mm (15.75 x 15.75 x 15.75 in.)
  • 2 Doors
Model HWM-100
Free Release Monitor
  • Chamber (H x W x L): 460 x 460 x 460 mm (18.1 x 18.1 x 18.1 in.)
  • 2 Doors
Model HWM-180
Release Monitor
  • Chamber (H x W x L): 600 x 550 x 550 mm (23.6 x 21.7 x 21.7 in.)
  • 2 Doors
Model HWM-300
Free Release Monitor
  • Chamber (H x W x L): 600 x 600 x 860 mm (23.6 x 23.6 x 33.9 in.)
  • 1 Door (2 Door Option)
Model HWM-400
Free Release Chamber
  • Chamber (H x W x L): 900 x 700 x 750 mm (35.4 x 27.6 x 29.5 in.)
  • 1 Door (2 Door Option)
Model HWM-400S
Free Release Chamber
  • Chamber (H x W x L): 900 x 700 x 750 mm (35.4 x 27.6 x 29.5 in.)
  • 1 Door (2 Door Option)
  • Manual Conveyor

 

Model HWM-550
Free Release Monitor
  • Chamber (H x W x L): 1,100 x 700 x 700 mm (43.3 x 27.6 x 27.6 in.)
  • 1 Door (2 Door Option)
  • Electric Conveyor
Model HWM-1800
Free Release Chamber
  • Chamber (H x W x L): 1,210 x 1,120 x 1,380 mm (47.6 x 44.1 x 54.3 in.)
  • 1 Door (2 Door Option)
  • Electric Conveyor
Model HWM-1800C
Free Release Chamber
  • Chamber (H x W x L): 1,210 x 1,120 x 1,380 mm (47.6 x 44.1 x 54.3 in.)
  • 1 Door (2 Door Option)
  • Electric Conveyor
  • Integrated in Shipping Container

Air Monitors

Model 334A Alpha Air Monitor

The Model 334A is a compact, lightweight, and portable alpha air monitor designed to function both as a workplace monitor and a Continuous Air Monitor (CAM) for measurements in emergency response situations. Its functionality is enhanced by its splash- and dust-proof enclosure with splash-proof electronics.

Model 334AB Alpha-Beta Air Monitor

The Model 334AB is a lightweight, battery-powered, alpha-beta air monitor that can be used as a portable workplace monitor or a portable CAM (continuous air monitor) for emergency-response assessments. It is designed to provide workers with an early warning of an airborne release of alpha and beta emitting particulates. The instrument can monitor up to two alpha isotopes of interest, simultaneously with beta monitoring. It also has radon compensation and a built-in gamma guard detector to compensate for changing ambient gamma background levels.

Model 3101 Portable Tritium in Air Monitor

The Model 3101 Tritium in Air Monitor features ruggedized and flexible operation. It is powered by rechargeable internal NiMH batteries and/or an external +12 Vdc power supply. It features a maintenance-free diaphragm air pump to pull air through the 250 cc tritium chamber, and the air flow is measured internally with a mass-air flow sensor. A second 250 cc chamber is used to provide gamma compensation, allowing operation in higher gamma fields. Other internal sensors measure temperature and ambient pressure and provide compensation for these effects.

Model 3100 Portable Tritium in Air Monitor

The Model 3100 Tritium in Air Monitor features ruggedized and flexible operation.

Hand & Foot Monitors

Model 215 Alpha Frisker Station CE Label

Ludlum Model 215 is a unique dual-purpose alpha contamination detection system that can be used as both a stationary detector and a mobile frisker. When alongside a glovebox, the operator can use this innovative device as a stationary hand frisker, then simply remove it from the charging stand for use as any other mobile alpha frisker.

Model 3276HFM Low Cost Hand & Foot Monitor

The Model 3276 is a versatile instrument that can be used for multiple radiation detection or measurement purposes. In this configuration, the Model 3276 is connected to both a Model 44-25 hand monitor detector and Model 44-26 foot monitor detector to monitor personnel for alpha, beta, and gamma contamination. An optional Model 44-9 detector can also be included for frisking.

Model 3277HFM Compact Alpha-Beta Hand & Foot Monitor

The Model 3277HFM Hand & Foot Monitor is intended for checking low-level alpha and beta contamination on personnel. The gasless system incorporates two scintillation detectors, one for the hand and one for the foot. An optional frisker scintillation detector can be included as well.

Model 4901P Beta-Gamma Hand & Foot Monitor

The Model 4901P Beta-Gamma Hand & Foot Monitor is intended for use as a medium-level beta and gamma contamination monitor. Four count channels are in the standard configuration for monitoring the palm of each hand and the sole of each foot. The Model 4901P employs a total of twenty-two pancake Geiger-Mueller (GM) type detectors, five in each hand detector (palm side only) and six in each foot detector. LED indicators show status and alarm location. The Model 4901P allows parameter updating by viewing the built-in, 16-character LCD display. Detector counts, background, alarm set points, and all parameters may be viewed on the LCD display. Switches at each hand detector initiate an interrogation (both switches must activate). Audible alarm and status change indications are standard.

Model 4906A Alpha Hand & Foot Monitor

The Model 4906A is an industrial-duty, low-cost, alpha-only contamination monitoring system for the hands and shoes of personnel. System status and areas of possible contamination are presented in a large color LCD making the process simple and user-friendly.

Model 4906AB Alpha-Beta Hand & Foot Monitor

The Model 4906AB is a low cost, industrial duty, alpha and beta contamination monitoring system for checking personnel hands and feet. A large color LCD presents users with the system status and points out any potential contamination in an easy-to-use manner.

Model 4906P Alpha-Beta-Gamma Hand & Foot Monitor

The Model 4906A is an industrial-duty, low-cost, alpha-only contamination monitoring system for the hands and shoes of personnel.

Model HFC-8 Hand, Foot, and Clothing Monitor

The HFC-8 is a compact hand, foot, and clothing monitor to measure personnel leaving controlled areas. Robust, with a removable probe and spring-loaded hand detectors, the Model HFC-8 is designed for portability between different areas. Featuring a detector arrangement to measure the hands and feet in one measurement step, the Model HFC-8 integrates the latest technology and design, while meeting industry and regulatory standards.

Model 177HFM Low Cost Hand & Foot Monitor

This setup offers a low-cost alpha/beta/gamma contamination monitoring system for checking hands and feet.

Body Monitors

Model HBP-22 Body Contamination Monitor

The Model HBP-22 is a body contamination monitor that utilizes beta plastic detectors to measure personnel as a pre-monitor. Robust, with a modern design that integrates the latest available industrial technology, the system is optimized for users of all sizes.

Vehicle Monitors

Model 4525 Series Radiation Portal Monitors

These systems are composed of ruggedized, large plastic scintillation detectors optimally arranged to monitor items passing through.

Vehicle Monitor Retrofits

Ludlum Measurements offers the option to retrofit existing vehicle monitor systems with the electronics and software used in our Model 4525-Series Vehicle Monitors, 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.

Model 52-8 Series
Outdoor Portal Monitor
  • Beta-Gamma Portal Monitor
  • Plastic Scintillator Detectors
  • Weatherproof
  • Portable

Scrap Monitoring Systems

Model 4525 Series Radiation Portal Monitors

These systems are composed of ruggedized, large plastic scintillation detectors optimally arranged to monitor items passing through.

Model 375P-3500 Conveyor Monitor CE Label

Protecting steel mills against entry of loose radiation sources that can potentially contaminate them requires diligent attention. Failure can cost millions in fines and clean-up expenses. Ludlum's conveyor monitor offers added assurance by inserting a second line of defense.

Model 375P-1000
Outdoor Monitoring System
  • Two 7866 cm3 (480 in3) Plastic Scintillator Detectors
  • Range: 0 to 9999 kcps
  • Outdoor Use
Model 375P-2000
Outdoor Monitoring System
  • Four 7866 cm3 (480 in3) Plastic Scintillator Detectors
  • Outdoor Use

Laundry Monitors

Model 329-32 Laundry Contamination Monitor

The Ludlum Model 329-32 Laundry Contamination Monitor is intended for automatic monitoring of both alpha and beta-gamma contamination on clothing or other light articles presumed to be free of radioactivity, or within release or reuse limits. A motor-driven steel-mesh conveyor belt carries articles between two gas proportional detector arrays. An audible alarm will sound when contamination exceeds the given alarm setpoint. A LED array spanning the belt shows the approximate position of the alarm on the conveyor, and provides the operator with the status of the machine. A dual LCD shows the counts and the current operating conditions, such as conveyor speed and gas flow. A security-code protected 20-key keypad also allows the changing of alarm set points, operating parameters, and other system information. The entire system is mobile, with lockable casters to prevent unwanted movement of the monitor.

Model HLM-22, HLM-3G Laundry Monitor

The Model HLM-22/HLM-3G Laundry Monitor is designed for the measurement and release of clothing items such as overalls, towels, and overshoes from controlled areas. Featuring automatic measurements and a stainless-steel grid conveyor, the Model HLM-22/HLM-3G provides precise and reliable detection of contamination.