Indicated Use	Low-level beta-gamma survey
Detector Type	Sealed, xenon gas proportional
Window	6.0 mg/cm² titanium
Window Area	Active: 169 cm² (26.2 in²) Open: 140 cm² (21.7 in²)
Efficiency (4π)	¹⁴C: 10% ⁹⁹Tc: 13% ³⁶Cl: 24% ⁹⁰Sr/⁹⁰Y: 26% ¹²⁹I: 3% ⁵⁷Co: 1.6% ⁵⁵Fe: 1.2% ²³⁹Pu: 10%
Construction	Aluminum and brass
Counter Threshold Setting	1.5 mV (typical)
Typical Sensitivity	36,000 cpm per mR/hr (⁶⁰Co gamma)
Operating Voltage	1600 to 1900 V (typical)
Connector	Series "C"
Size (H x W x L)	8.6 x 11.9 x 24.6 cm (3.4 x 4.7 x 9.7)
Weight	0.6 kg (1.4 lb)

Model	Description	Part Number
Model 12	Analog Survey Meter	48-1609
Model 177-61	Benchtop Analog Meter Adjustable audio & visual alarm HV Range: 400 to 2500 V	48-1382
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 2221	Analog Scaler-Ratemeter with Digital LCD Single channel analysis	48-2065
Model 2350-1	Digital Datalogging Meter Stores 1000 data points Supports 16 detector setups	48-2751

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