Ludlum Geiger-Muller Counters
The Ludlum line of Geiger-Muller Counters are gamma exposure ratemeters equipped with an internally housed, energy compensated GM detector that measures over the range of 0 to 10 Sv/h (model 2242) or 0 to 200 µSv/h (model 2401-EC2A).
Availability: Commercially Available
| Manufacturer |
| Ludlum Measurements, Inc. |
| Product Name |
| Ludlum Geiger-Muller Counters |
| Detection Category |
| Radiological/Nuclear; |
| Detection Principle |
| Geiger-Muller Detectors; |
| Detection Method |
| Geiger-Muller Detectors; |
| Application |
| Survey Meter;Personal Radiation Detectors; |
| Product Model Number |
| 2242, 2401-EC2A |
| Equipment Type |
| Instrument |
| Product Synopsis |
| The Ludlum line of Geiger-Muller Counters are gamma exposure ratemeters equipped with an internally housed, energy compensated GM detector that measures over the range of 0 to 10 Sv/h (model 2242) or 0 to 200 µSv/h (model 2401-EC2A). |
| Availability |
| Commercially Available |
| Technology Readiness Level (TRL) |
| 9 |
| User Feedback Sources |
| Indifferent/No user feedback |
| Supporting Documentation |
| Docs: Ludlum Measurements-Ludlum Geiger-Muller Counters-M3005.pdf; Ludlum Measurements-Ludlum Geiger-Muller Counters-M6.pdf; Ludlum Measurements-Ludlum Geiger-Muller Counters-M5.pdf; |
| Dimensions |
| Model 2242: 6.5 x 3.5 x 8.5 in (16.5 x 8.9 x 21.6 cm) Model 2401-EC2A: 1.8 x 3.3 x 5.3 in (4.6 x 8.4 x 13.5 cm) |
| Weight |
| <5 lbs.; Model 2242: 3.5 lbs (1.6 kg)
Model 2401-EC2A: 0.9 lb (0.4 kg) |
| Power Requirements |
| Alkaline Battery; Model 2242: Two D-cell batteries (200 hours). Model 2401-EC2A: 9 V |
| Transportability |
| Pocket Size |
| Ruggedness |
| Extreme Temperatures/Humidity; Model 2242: Rugged. Cast and drawn aluminium with beige powder coat, splashproof. Model 2401-EC2A: field deployable |
| Operating Conditions |
| –30 to 50°C (-22 to 122°F) |
| Consumables |
| None |
| Calibration Schedule |
| Internal calibration |
| Suggested Routine Maintenance |
| General cleaning and battery replacement |
| Available Accessories |
| Model 2242: Wrist and Shoulder strap
Model 2401-EC2A: belt clip, handle, case, wrist strap |
| Data Analysis Support Equipment |
| Model 2242: Software |
| Communications Interface |
| Model 2242: RS-232 |
| Expected Operational Life |
| Indefinite |
| Shelf Life |
| >5 years |
| Unit Cost |
| $1,122 to $2,500 |
| Radiological Targets |
| Gamma |
| Sample Introduction |
| Radioactive Particle |
| Sensitivity/Detection Limits |
| Sv; µSv; mR; Model 2242: 0 to 10 Sv/h (0 to 1000 mR/hr). Model 2401-EC2A: 0 to 200 µSv/h . |
| False Positive Rates |
| 15 % |
| Start Up Time (From Cold Start To Sample Ready) |
| < 2 minutes |
| Response Time (Sample Application To Output) |
| Continuous (<30 seconds); < 4 seconds |
| Total Run Time |
| Continuous monitor |
| Alarm Capability |
| Audible and visual |
| Software Control |
| On-board, PC (model 2242) |
| Other Operational Parameters |
| Energy range: 60 keV to 3 MeV |
| Training Required |
| <1 day training |
| Manuals Available |
| Yes |
| Warranties |
| 1 year, extended warranty available |
