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- Model 12-4-7
Model 12-4-7
The Model 12-4-7 is a neutron dose rate instrument that conforms to the RPG curve with a measuring range of 0 to 100 mSv/h (0 to 10,000 mrem/hr) from thermal to 12 MeV neutrons.
The detector is a 19.5 cm (7.7 in.), moderated 3He tube with a gamma background rejection up to 100 mSv/h (10 R/hr). The ratemeter is a four-decade analog meter, designed with a cast aluminum instrument housing incorporating a separate battery compartment, and accompanying metal handle. This design delivers industrial robustness and quality, promoting long-lasting protection and instrument life.
The front-panel controls include a rotary switch for selecting the four-decade range, instrument shut-off, and battery test; an audio on/off switch; a fast/slow response switch; a count reset; and high-voltage test push-button. The Model 12-4-7 is a complete turn-key system and includes two "D" cell batteries.
Features
- Smaller, Lighter 7-inch Polyethylene Ball
- Moderated Neutron Detector
- Range: 0 to 100 mSv/h (0 to 10,000 mrem/hr)
- Gamma Rejection up to 0.1 Sv/h (10 R/hr)
- Rugged
- 4-Range Analog Meter
- Complete Turn-Key System
Related Products
Model 15
Neutron Dose Survey Meter
- Neutron and Alpha-Beta-Gamma Detection
- 4-Range Analog Meter
- Model 42-14H 3He Proportional Detector
- Sensitivity (241AmBe): 55 cpm per mrem/hr
- Model 44-7 End-Window GM Detector
- Sensitivity (137Cs): 2100 cpm per mR/hr
- Range: 0 to 500,000 cpm
Model 2363 with 42-41L
Neutron Dose Survey Meter
- Neutron and Gamma Detection
- Analog + Digital Scaler-Ratemeter
- External Model 42-41L PRESCILA Detector
- Neutron Sensitivity: 350 cpm per mrem/hr
- Range: 0.1 mrem/hr to 1 rem/hr
- Internal GM Detector
- Gamma Sensitivity: 1000 cpm per mR/hr
- Range: 1 µSv/h to 10 m Sv/h (0.1 mR/hr to 1 R/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)
Model 2241-4
Neutron Dose Survey Meter
- Digital Scaler-Ratemeter
- Model 42-31H 3He Proportional Detector
- Moderator: 22.9 cm (9.0 in.) dia.
- Sensitivity (241AmBe): 30 cpm per mrem/hr
- Range: 0 to 100 mSv/h (0 to 10,000 mrem/hr)
Model 12-4
Neutron Dose Survey Meter
- 4-Range Analog Meter
- Model 42-31H 3He Proportional Detector
- Moderator: 22.9 cm (9.0 in.) dia.
- Sensitivity (241AmBe): 10,000 cpm per mSv/h (100 cpm per mrem/hr)
- Range: 0 to 100 mSv/h (0 to 10,000 mrem/hr)
Model 30-4
Digital Neutron Survey Meter
- Digital Meter
- 3He Proportional Detector
- Moderator: 22.9 cm (9.0 in.) dia.
- Sensitivity (241AmBe): 10 cpm per µSv/h (100 cpm per mrem/hr)
- Range: 0 to 99.9 mSv/h (0 to 9.99 rem/hr)
Model 12-4-7
Neutron Dose Survey Meter
- 4-Range Analog Meter
- Moderator: 19.5 cm (7.7 in.) dia.
- Sensitivity (241AmBe): 10 cpm per µSv/h (100 cpm per mrem/hr)
- Range: 0 to 100 mSv/h (0 to 10,000 mrem/hr)
Model 3007 Series
Neutron Dose Survey Meter With Optional Internal Gamma Detector
- Digital Meter
- 3He Proportional Detector
- Moderator: 19.5 cm (7.7 in.) dia.
- Sensitivity (241AmBe): 4.5 cpm per µSv/h (45 cpm per mrem/hr) or 10 cpm per µSv/h (100 cpm per mrem/hr)
- Range: 0 to 100 mSv/h (0 to 10,000 rem/hr)
- Internal Detector Option for Exposure/Dose Measurements
Model 30-7 Series
Lightweight Digital Neutron Survey Meter
- Digital Meter
- 3He Proportional Detector
- Moderator: 19.5 cm (7.7 in.) dia.
- Sensitivity (241AmBe): 4.5 cpm per µSv/h (45 cpm per mrem/hr) or 10 cpm per µSv/h (100 cpm per mrem/hr)
- Range: 0 to 99.9 mSv/h (0 to 9.99 rem/hr)
