Alpha Beta Gamma Sample Counter Head - Model 180-8
CE Seal
Specifications

INDICATED USE: low background sample counting
DETECTOR: end window halogen quenched GM (others available)
WINDOW: 1.7 ± 0.3 mg/cm² mica
WINDOW AREA: active 6 cm²; open 5 cm²
EFFICIENCY (4π): 2% for 14C, 10% for 90Sr/90Y, 7% for 239Pu
SENSITIVITY: 2100 cpm/mR/hr (137Cs gamma)
ENERGY RESPONSE: energy dependent
BACKGROUND: 14 cpm with end window GM
DEAD TIME: 250 microseconds
SAMPLE SIZE: maximum 4.7 cm (1.8 in.) diameter maximum
SAMPLE TRAY: selectable spacing of  0.32 cm (0.125 in.), 0.64 cm (0.25 in.), 1.3 cm (0.5 in.), 2.5 cm (1 in.), or 5.1 cm (2 in.) from detector
SUGGESTED INSTRUMENTS: Model 2000 and Model 2200
OPERATING VOLTAGE: 900 volts
CONSTRUCTION: 0.3 cm (1.5 in.) thick painted lead housing
SIZE: 24.1 x 37.3 cm (9.5 x 14.7 in.) (Dia x L)
WEIGHT: 107 kg (235 lb)
SHIPPING WEIGHT: 125 kg (275 lb)