| The Radalert™ 100
The Radalert 100 is a general purpose geiger counter that measures alpha, beta, gamma, and x-radiation. Exciting new features of the Radalert 100 — as an upgraded version of the popular Radalert 50 — include a three-second update and a utility menu that allows you to change the default settings for several operating parameters. Its digital liquid crystal display (LCD) shows the current radiation level in your choice of milliroentgens per hour from .001 to 110 or counts per minute (cpm) from 0 to 350,000. When SI units are selected, the LCD shows readings in microsieverts per hour from .01 to 1100 or counts per second (cps) from 0 to 3,500. This instrument also offers an accumulated total and timer function, up to 9,999,000 counts and 40 hours. A red LED blinks and a beeper chirps with each count (the chirp can be muted). An audible alert sounds when the radiation reaches a user-adjustable level. The Radalert 100 meets CE certification requirements for Europe.
Use the Radalert 100™ to:
- Monitor personal radiation exposure
- Monitor an area or perimeter
- Detect radiation leaks and contamination
- Ensure regulatory compliance
- Monitor changes in background radiation
- Demonstrate principles of nuclear physics
- Check for radioactive minerals in the earth
Specifications:
Sensor:
• Halogen-quenched Geiger-Meuller detector (LND712)
• Mica end window density is 1.5-2.0 mg/cm²
• Side wall is 0.012" #446 stainless steel
• Detects Alpha, Beta, Gamma, and X-radiation
Display: 4-digit liquid crystal display with mode indicators
| Operating range: |
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mR/hr: .001-110 |
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CPM: 0-350,000 |
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µSv/hr: .01-1,100 |
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CPS: 0-3,500 |
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Total: 0-9,999,000 counts |
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Timer: up to 40 hours |
Calibration: Cesium 137 (gamma)
Sensitivity: 1000 cpm/mR/hr referenced to Cs-137
Accuracy: ±10% typical; ±15% max. (mR/hr & mSv/hr modes)
Alert: User-adjustable alert level to 50 mR/hr & 160,000 CPM
Count light: Red LED flashes with each count
Audio: Beeper chirps for each count (can be muted)
Ports:
• Output: Stereo 3.5 mm jack sends counts to computers, data loggers, other CMOS-compatible devices, and headphones
• Input: Mono 2.5 mm jack provides electronic calibration input
Power: One 9-volt alkaline battery; average battery life is 2160 hours at normal background, 625 hours at 1 mR/hr with beeper off
Size: 150 x 80 x 30 mm (5.9" x 3.2" x 1.2")
Weight: 225 grams (8 oz) including battery
Options: Computer cable and software (IBM PC compatible)
CE Certified
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현재위치 : 
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Unique to the Radalert, and the source of its name, is an audible alert that sounds when the radiation reaches a user-adjustable level. Play this 
Also note the Audio Output port for external sound.
The Radalert also comes with a padded vinyl carrying case with belt loop, shown at left.
