The Model 203 is a shielded well counter utilizing a NaI(Tl) scintillator with well.
PART NUMBER:47-1638
DETECTOR: 1.75"(4.45cm) diameter X 2"(5.08cm) thick integral NaI(Tl) well scintillator
WELL:0.7"(1.7cm) diameter X 1.6"(3.9cm) Deep
EFFICIENCY (4pi geometry): Typically 70% - 129I
SENSITIVITY: Will detect 0.005 microCi gamma or 200 dpm removable contamination
for 99mTc, 131I, 201Tl, 111In, 125I, 137Cs, and 67Ga
COMPATIBLE INSTRUMENTS: Typically used with Model 1000, Model 2000, Model 2200, and others
TUBE: 2"(5.1cm) diameter magnetically shielded photomultiplier
OPERATING VOLTAGE: Typically 500 - 1200 volts
DYNODE STRING RESISTANCE: 60 megohm
CONNECTOR: Series "C" (others available)
CONSTRUCTION: 1.5"(3.8cm) thick lead and removable cap with beige polyurethane enamel paint
TEMPERATURE RANGE: -4° F(-20° C) to 122° F(50° C)
May be certified for operation from -40° F(-40° C) to 150° F(65° C)
SIZE: 16.4" (41.9cm)H X 12"(30.5cm)W X 13.5" (34.3cm)L
WEIGHT: 125 lbs (56.8 kg)
SHIPPING WEIGHT: 150 lbs(68.2kg)
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