!: Comparison Vernier Physics Sensors and Probes, Radiation Monitor guide
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Digital Radiation Monitor (Vernier) - The Digital Radiation Monitor consists of a Geiger-Mueller tube and a digital rate meter mounted in a small, rugged, plastic case. The unit is battery operated and can be used with or without a computer for measurement of alpha, beta, and gamma radiation. It can be used to explore radiation statistics, measure the rate of nuclear decay, and monitor radon progeny. -- Specifications ** -- Sensor: LND 712 (or equivalent) halogen-quenched GM tube with a mica end window, 1.5 to 2.0 mg/cm2 thick. Rated at 1000 counts per minute using a Cesium-137 laboratory standard. ** -- Power: One 9-volt alkaline battery provides a battery life of 2000 hours at normal background radiation levels. -- Accuracy: ±10% typical, ±15% max. (mR/hr and "Sv/hr modes) ** -- Dimensions: 150 x 80 x 30 mm (5.9" x 3.2" x 1.2") ** -- Weight: 225 g (8 oz) with battery installed -- Energy Sensitivity: 1000 CPM/mR/hr referenced to Cs-137 ** -- Audio Output: Chirps for each count (operational in audio mode onlyÐcan be muted) ** -- Temperature Range: Ð20¡C to 50¡C ** -- Operating Range: ** -- mR/hr: 0.001 to 110 ** -- CPM: 0 to 350,000 ** -- Total: 1 to 9,999,000 counts ** -- "Sv/hr: 0.01 to 1100 ** -- CPS: 1 to 3,500
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