APPLICATION: low-level, wide-energy gamma radiation survey

RADIATION DETECTOR: 1 x 1 in. (2.5 x 2.5 cm) (Dia x L) thick (NaI)Tl scintillator

EFFICIENCY: ¹²⁵I - 7.0%

SENSITIVITY: typically 175 cpm/μR/hr (¹³⁷Cs gamma)

BACKGROUND: 1900 cpm
RECOMMENDED ENERGY RANGE: 50 KeV–1.5 MeV

ENERGY RESPONSE: energy dependent, see graph below

COMPATIBLE INSTRUMENTS: general purpose radiation survey meters, ratemeters and scalers

PHOTOMULTIPLIER TUBE: 1.125 in. (2.86 cm) diameter

OPERATING VOLTAGE: 500–1200 volts

CONNECTOR: series "C" (others available)

TEMPERATURE RANGE: 5 to 122 °F (-15 to 50 °C ), may be certified for -40 to 150 °F (-40 to 65 °C)

SIZE: 2 x 7.3 in. (5.1 x 18.5 cm) (Dia x L)

WEIGHT: 1 lb (0.5 kg)