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Measurement Equipment (nuclear radiation)

The Radalert 50

The Radalert 50, our most popular product, is a general purpose geiger counter. It measures alpha, beta, gamma, and x-radiation. Its digital display shows readings in your choice of counts per minute (cpm) or mR/hr, up to 50,000 cpm or 50 mR/hr, or in accumulated counts. 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 50 meets CE certification requirements for Europe.

A picture of IDR-Radalert50 (geiger counter)
IDR-radalert50 $425.00

 

 

Use the Radalert 50 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 with mica end window (LND712); detects Alpha, Beta, Gamma, and X-radiation. End window density is 1.5-2.0 mg/cm². Side wall is .012" #446 stainless steel.

Display: 4-digit liquid crystal display with mode indicators

Operating range: mR/hr: .001-50.00 mR/hr (Cs-137); CPM: 0-50,000; Total: 0-60,000 counts

Calibration: Cesium 137 (gamma)

Sensitivity: 1000 cpm/mR/hr referenced to Cs-137

Accuracy: ±10% typical; ±15% max.

Alert: User-adjustable alert level is set using three buttons

Count light: Red LED flashes with each count

Beeper: Chirps for each count (can be muted)

Outputs: Dual miniature jack sends counts to computers, data loggers, several educational data collection systems and other CMOS-compatible devices. Submini jack provides audio output to an external earpiece, amplifier, or tape recorder.

Power: One 9-volt alkaline battery

Size: 150 x 80 x 30 mm (5.9 " 3.2"x 1.2")

Weight: 225 grams (8 oz) including battery

Options: European SI units (mSv/hr); Computer cable and software (IBM PC compatible)

Specifications subject to change without notice.

The Inspector
Handheld Surface Contamination Monitor

IDR-Inspector $490.00

A picture of IDR-Inspector (geiger counter) >

The Inspector measures alpha, beta, gamma, and x radiation using a 2-inch pancake GM detector with high sensitivity to common beta and alpha sources. The easy-to-read digital display shows readings in your choice of mR/hr, CPM, CPS, or m Sv/hr. The Inspector automatically compensates for GM tube dead time. Anti-saturation circuitry prevents jamming in high radiation fields. The Inspector meets CE certification requirements for Europe.

The Total/Timer feature takes timed readings for periods from one minute to 24 hours for precise measurement of low-level contamination. Our "safety first" calibration feature can eliminate radiation exposure to the calibration technician.

 Specifications:

Detector: Halogen-quenched Geiger-Mueller tube. Effective diameter 1.75" (45 mm). Mica window density 1.5-2.0 mg/cm²

Display: 4-digit liquid crystal display with mode indicators

Averaging Periods: Display updates every 3 seconds, showing the average for the past 30-second time period at normal levels. The averaging period decreases as the radiation level increases. User can select fast 3-second averaging period.

Operating Range: mR/hr: .001 to 100.0; CPM: 0 to 300,000; Total: 1 to 9,999,000 counts; mSv/hr: .01 to 1,000; CPS: 0 to 5,000

Efficiency: Sr-90 (546KeV, 2.3MeV b max): approx. 75%; C-14 (156KeV b max): approx. 11%; Bi-210 (1.2 MeV b max): approx. 64%; Am-241 (5.5 MeV a): approx. 36%

Sensitivity: 3500 CPM/mR/hr referenced to Cs-137

Accuracy: ± 15%

Timer: Can set 1-10 minute sampling periods in 1-minute increments, 10-50 minute sampling periods in 10-minute increments, and 1-24 hour sampling periods in 1-hour increments

Count Light: Red LED flashes with each radiation event

Audio: Beeper beeps with each radiation event; can be muted

Outputs: Dual miniature jack drives CMOS or TTL devices, sending counts to computer or data logger. Submini jack allows for electronic calibration.

Anti-Saturation: Readout holds at full scale in fields up to 100 times the maximum reading

Temperature Range: -10° to +50° C , 14° to 122° F

Power: One 9-volt alkaline battery; battery life is minimum 200 hours at normal background, minimum 24 hours at 1 mR/hr

Size: 150 x 80 x 30 mm (5.9"; x 3.2"; x 1.2")

Weight: 350 grams (12.5 oz) with battery

Option: Wipe Test Plate; Computer cable and software (IBM PC compatible)

 

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Biofeedback Instrument Corporation
255 W. 98 Street
New York, NY 10025
(212) 222-5665

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