Indicated Use	Low-energy alpha and beta sample counting, can measure tritium
Detector Type	Windowless gas flow proportional
Gas Flow	Typically 0.1 L/min., detector equipped with 3.2 mm (0.125 in.) hose fittings and two position switch flow valve
Purge Time	60 s at gas flow of 0.1 L/min. (100 cc/min.), shorter times at higher gas flow
Efficiency	³H: 3% ¹⁴C: 21% ⁶³Ni: 36% ²³⁹Pu: 42%
Typical Background (10 µR/hr field)	Alpha: ≤ 3 cpm Beta: 150 cpm
Operating Voltage	1600 to 1900 Vdc (typical)
Temperature Range	-20 to 50 °C (-4 to 122 °F)
Sample Size (max.) (D x L)	5.1 x 0.9 cm (2.0 x 0.4 in.)
Sample Holder	Anodized aluminum tray with 2.5 cm (1.0 in.) dia. sample ring to allow for 2.5 or 5.1 cm (1.0 or 2.0 in.) dia. samples
Connector	Series "C"
Construction	Aluminum housing
Size (H x W x L)	15.2 x 11.4 x 23.6 cm (6 x 4.5 x 9.3 in.)
Weight	1.5 kg (3.3 lb)

Model	Description	Part Number
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

Option	Description	Part Number
Sample Planchets	Set of 500 aluminum or stainless steel sample planchets.	Depends on material.
Model 2750-7	Gas flow meter. (Does not include gas regulator.)	4304-052
2-Stage Gas Regulator	Gas regulator	2310017
Model T-1031	Gas flow timer control	48-2472

Model 44-110-4

Windowless Sample Counter Detector