Ludlum Model 203

  Gamma Radiation Sample Counter Head

PART NUMBER: 47-1638

APPLICATION: gamma radiation assay, gross counting
RADIATION DETECTOR: 2 x 1.8 in. (5.1 cm x 4.6 cm) (Dia x L) thick integral NaI (Tl) well scintillator
WELL: 0.66 x 1.6 in. (1.7 x 3.9 cm) (Dia x L)
SHIELDING: 1.5 in. lead

EFFICIENCY (4π): ¹²⁹I - 65%, ¹³⁷Cs - 33%, ⁶⁰Co - 43%
SENSITIVITY: will detect 0.005 mCi gamma or 200 dpm removable contamination for ^99mTc, ¹³¹I, ²⁰¹Tl, ¹¹¹In, ¹²⁵I, ¹³⁷Cs, and ⁶⁷Ga
BACKGROUND: ≤ 500 cpm

COMPATIBLE INSTRUMENTS: Ludlum Models 2000, 2200, 2221
PHOTOMULTIPLIER TUBE: 2 in. (5.1 cm) diameter
OPERATING VOLTAGE: 500-1200 volts
CONNECTOR: series “C” (others available)
CONSTRUCTION: 1.5 in. (3.8 cm) thick lead wall and removable cap
SIZE: 16.4 x 12 x 13.5 in. (41.9 x 30.5 x 34.3 cm) (H x W x L)

WEIGHT: 125 lb (56.8 kg)
SHIPPING WEIGHT: 150 lb (68.2 kg)

CE CERTIFIED: yes

Data Sheet

Product Manual

CE Certificate