Indicated Use	Alpha sample counting
Detector Type	ZnS(Ag) scintillator
Window	Windowless
Efficiency	²³⁰Th: 37%
Typical Background (10 µR/hr field)	≤ 3 cpm
Photomultiplier Tube	5.1 cm (2 in.)
Operating Voltage	500 to 1200 V
Sample Size (max.) (D x L)	5.1 cm x 0.9 cm (2 x 0.4 in.)
Sample Holder	Anodized aluminum tray with sample ring to allow for 2.5 cm (1 in.) or 5.1 cm (2 in.) dia. samples
Size (H x W x L)	23.6 x 11.4 x 23.6 cm (9.3 x 4.5 x 9.3 in.)
Weight	1.9 kg (4.1 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 with Digital LCD Single channel analysis	48-2065
Model 2241	Auto-Ranging Digital Scaler-Ratemeter RS-232 port	48-2444
Model 3030E	Alpha-Beta Scaler Dual channel for alpha-beta sample counting Scaler Range: 0 to 999,999 counts Timer: 0.1, 0.5, 1, 2, 5, 10, or 60 minutes PC interface	48-3448

Option	Description	Part Number
Sample Planchets	Set of 500 aluminum or stainless steel sample planchets.	Depends on material.

Description	Part Number
Scintillator Assembly	4142-074
2 in. PMT, Based Tube without Voltage Divider	01-5919