Ludlum 44-2 Simulator

The Ludlum 44-2 radiation simulator probe can be used with any 44-2 probe compatible Ludlum meter.


This powerful combination provides you with a training capability that is extremely close to using the actual Ludlum meter and 44-2 detector probe and live sources but without the difficulties associated with regulatory controls and administration. 


Powered by the Argon battery power pack which uses readily available commercial batteries, operational life is typically 160 hours. Inverse square law response is extremely realistic; even the effect of user body shielding to determine source position is realistically simulated enabling you to ensure survey teams understand what to do when that emergency comes.

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Ludlum 44-2 Simulator Probe
Ludlum 44.2

High impact radiation training

Response speed and characteristics are very similar to the real detector permitting realistic source search/find training to be provided.

Simulated delivered sensitivity enables the 44-2 Simulator probe to detect the RadSIM-GS4 simulation Gamma/Neutron source at a free space distance of typically 200 feet (60 metres) distance line of sight. Our powerful Radsim source App enables you to set a wide range of simulated source activity.

Easy, Consistent and repeatable

Powerful proprietary signal processing ensures simulated readings are repeatable each time students revisit the same scenario location and also ensure the readings observed on different simulators are within the accepted tolerances of actual detectors; all contributing to the provision of high-quality training and easy exercise set up.

Key features:

  • Inverse square law (1/r2) response within real detector tolerance.
  • Simulation of user body shielding for source location.
  • Realistic representation of different shielding effects. 
  • Simulation check source.
  • Uses Argon simulator battery power pack (commercial Alkaline batteries).
  • No regular calibration.
  • No preventative maintenance.
  • PlumeSIM compatible.
  • Compatible with other Argon radiological simulators.

Low cost of ownership

No preventative maintenance, calibration or consumables (except batteries) are required ensuring whole life cost of ownership is minimal.

PlumeSIM compatible

The 44-2 radiation simulator probe is compatible with PlumeSIM, Argon’s proven Live Field and Tabletop CBRN exercise system. In use by many of the world’s leading training facilities, PlumeSIM enables real time instrumented wide area tactical field and nuclear / HazMat / Chemical Warfare emergency response exercises to be conducted using single or multiple simulation device types that respond in the real time to simulated hazards. 

Other radiation simulators available

Argon can offer a full range of compatible simulators. Please contact us for your specific requirements.


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Download Ludlums product sheet

Ludlum 44-2