Indicated Use	Alpha contamination survey
Detector Type	ZnS(Ag) scintillator
Window	0.8 mg/cm² metalized polyester (1.2 mg/cm² recommended for outdoor use)
Window Area	Active: 100 cm² (15.5 in²) Open: 88 cm² (13.6 in²)
Protective Screen	0.79 mm (0.03 in.) thick, 6.5 mm (0.26 in.) square openings, 88% open Outer Dimensions (L x W): 168 x 92 mm (6.6 x 3.6 in.) Tool-less removal for quick window replacements
Efficiency (4π)	²³⁹Pu: 20%
Typical Background (10 µR/hr field)	3 cpm or less
Detector Uniformity	within 10% of average reading
Photomultiplier Tube	29 mm (1.125 in.) diameter
Operating Voltage	typically 500 to 1200 V (1500 V max.)
Temperature Range	-20 to 50 °C (-4 to 122 °F)
Environmental Rating	IP rating of 63
Connector	Series "C" (others available)
Construction	Aluminum with beige powder coating
Size (H x W x L)	6.4 x 9.7 x 31.2 cm (2.5 x 3.8 x 12.3 in.)
Weight	0.5 kg (1.0 lb)

Description	Thickness	Openings	% Open	Part Number
Protective Screen (standard)	0.79 mm (0.031 in.)	6.5 mm (0.26 in.) square	88%	7393-171
Protective Screen	0.79 mm (0.031 in.)	4 mm (0.16 in.) square	81%	7393-209
Protective Screen	0.79 mm (0.031 in.)	4.8 mm (0.19 in.) hex	83.5%	7393-208
Protective Screen	0.51 mm (0.020 in.)	6.5 mm (0.26 in.)	88%	7393-138
Protective Screen with Mesh	0.85 mm (0.0335 in.)	Screen: 6.5 mm (0.26 in.) square Mesh: Fine stainless steel mesh	69%	2393-381
Face Ring with Mesh (should be paired with one of the screens above)	Mesh: 0.064 mm (0.0025 in.)	Fine stainless steel mesh	78%	2393-345

Option	Description	Part Number
Model 180-15-3	Sample holder for max. 5.1 x 1.5 cm (2 x 0.6 in.) [D x L] samples.	47-3865

Description	Part Number
Window Assembly	4393-069