Ludlum Model 2221 w/ 44-10 2x2 Nal Probe Rental P1 Probe FASTEST LOGGING RATE - 2

FASTEST LOGGING RATE - 2 per second

Discharge - 3/8 in

• Password protection that limits individual user access

reel mounted portable systems allow access to multiple monitoring wells

Ludlum Model 2221 w/ 44-10 2x2 Nal Probe Rental P1 Probe FASTEST LOGGING RATE - 2Indicated Use Low level, wide energy gamma detection Detector Type NaI(Tl) scintillator, 5. 1 cm (2 in.) dia. x 5. 1 cm (2 in.) thick Efficiency (4) 125I: 4% 57Co: 20% 137Cs: 9% 60Co: 15% Typical Sensitivity (137Cs gamma) 900 cpm per R hr Recommended Energy Range 30 keV to 3. 0 MeV Energy Response Energy dependent (see Energy Response Curve) Typical Background (10 R hr field) 9750 cpm Photomultiplier Tube 5. 1 cm (2 in.) diameter Operating Voltage 500