The Monitor 4EC is an energy compensated, ergonomic radiation survey meter capable of detecting alpha, beta, gamma, and x-rays over 3 selectable ranges. This detector is great for getting a linear response to gamma and x-ray. A red count light flashes and a beep sounds with each event detected. The Monitor 4EC offers a linear response for gamma and x-rays (above 40 keV). Operation Manuals English | Español | Français | PDF Quick Specs | Quick Start Video Contact For Pricing and Availability Detector Halogen-quenched GM tube, energy compensated sidewall 2mm thin filter. Thin mica window 1.5-2.0 mg/cm2 thick. Effective diameter of window is 9.1 mm (.36 in.). Operating Range 0-.5, 0-5, 0-50 mR/hr 0-500, 0-5,000, 0-50,000 CPM or 0-5, 0-50, 0-500 μSv/hr (SI Scale Meter Option) Energy Sensitivity 1000 CPM/mR/hr (Cs137). Detects alpha down to 2.5 MeV; typical detection efficiency at 3.6 MeV is greater than 80%. Detects beta at 50 keV with typical 35% detection efficiency and beta at 150 keV with typical 75% detection efficiency. Detects gamma and x-rays down to 10 keV typical through the window (non-compensated), 40 keV through the sidewall. Accuracy Typically ±15% of reading (Cs137) Audio Indicator Internally mounted beeper (can be turned off for silent operation). Range Switch X1, X10, X100, Battery Check. Display Analog Meter holds full scale in fields as high as 100X maximum reading. CPM & mR/hr scale. Optional SI Scale Meter Available Outputs Headphone, 3.5 mm jack with pulse out. Includes Carrying Case w/ Belt Clip Options SI Meter Option, Observer Software Limited Warranty 1 year limited warranty Monitor 4 Kits Build your own Monitor 4! Learn about how a Geiger counter works! Power Requirements 9-volt alkaline battery (included). Approx. 2,000 hrs. at normal background Temperature Range -20° to 55°C (-4° to 131°F) Weight M4: 200 g (7.1 oz) M4EC: 224 g (7.9 oz) Outputs 3.5 mm jack with pulse out. Size 209 x 71 x 50 mm (8.2 x 2.8 x 1.9 in.)
