Indicated Use	Gamma assay
Detector	Integral NaI(Tl) well scintillator, 5.1 cm (2 in.) dia. x 4.6 cm (1.8 in.) thick
Well (D x L)	1.7 x 3.9 cm (0.67 x 1.6 in.)
Efficiency	¹²⁹I: 65% ¹³⁷Cs: 33% ⁶⁰Co: 43%
Sensitivity	Will detect 0.005 µCi gamma or 200 dpm removable contamination for ^99mTc, ¹³¹I, ²⁰¹Tl, ¹¹¹In, ¹²⁵I, ¹³⁷Cs, ⁶⁰Co, and ⁶⁷Ga
Background	500 cpm or less
Photomultiplier Tube	5.1 cm (2 in.) diameter
Operating Voltage	500 to 1200 V
Construction	3.8 cm (1.5 in.) thick painted lead wall and removable cap
Size (D x L)	41.9 x 30.5 x 34.3 cm (16.4 x 12 x 13.5 in.)
Weight	56.8 kg (125 lb)
Shipping Weight	68.2 kg (150 lb)

Model	Description	Part Number
Model 2000	Scaler Scaler Range: 0 to 999,999 counts Timer: 0 to 999 minutes	48-1648
Model 2200	Scaler-Ratemeter Scaler Range: 0 to 999,999 counts Ratemeter Range: 0 to 500,000 cpm Timer: 0 to 999 minutes Adjustable window	48-1651
Model 3000	Digital Survey Meter	48-4035
Model 3001	Digital Survey Meter 4 detector setups	48-4036
Model 2221	Analog Scaler-Ratemeter Single channel analysis	48-2065

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