Alpha Detector - Model 43-92
CE Seal
Specifications

INDICATED USE: alpha contamination survey
SCINTILLATOR: ZnS(Ag)
EFFICIENCY (4π): typically 20% for 239Pu
WINDOW: 0.8 mg/cm² metalized polyester (1.2 mg/cm² recommended for outdoor use)
REMOVABLE PROTECTIVE SCREEN: 0.79 mm (0.03 in.) thick, 6.5 mm (0.25 in.) square openings, 88% open (see below for optional protective screens)
SCREEN OUTER DIMENSIONS: 167.6 x 91.4 mm (6.6 x 3.6 in.) (L x W)
WINDOW AREA:
    Active: 100 cm² (15.5 in²)
    Open: 88 cm² (13.6 in²)
RESPONSE NON-UNIFORMITY: less than 10% from average reading
BACKGROUND: 3 cpm or less
PHOTOMULTIPLIER TUBE: 2.9 cm (1.13 in.) diameter
OPERATING VOLTAGE: typically 500 to 1200 volts (1500 volts maximum)
CONSTRUCTION: aluminum with beige powder coating
TEMPERATURE RANGE: -20 to 50 °C (-4 to 122 °F)
CONNECTOR: series “C”, unless specified otherwise
SIZE: 6.4 x 9.5 x 31.2 cm (2.5 x 3.8 x 12.3 in. (H x W x L)
WEIGHT: 0.5 kg (1.0 lb)

Optional Protective Screens
Model L-7393-209: 0.79 mm (0.031 in.) thick, 4 mm (0.16 in.) square openings, 81% open
Model L-7393-208: 0.79 mm (0.031 in.) thick, 4.8 mm (0.19 in.) hex openings, 83.5% open
Model L-7393-138: 0.51 mm (0.020 in.) thick, 6.5 mm (0.25 in.) square openings, 88% open