SEI Inspector Xtreme USB / Ruggedized Digiltal Radiation Survey Meter - a ? y xSEI Inspector Xtreme USB /堅固耐用數字核輻射測量儀 - a ? y xNow with USB and the free Observer USB Software, you can download your data from the internal memory, set computer alarms, and calibrate your instrument! The Inspector Xtreme USB offers maximum performance in a lightweight, rugged solution for using your survey meter in the field. The Inspector Xtreme USB is designed specifically for individuals operating in tough environments, such as 1st Responders, miners, and HAZMAT crews. The unit is a small, handheld, microprocessor-based instrument which offers excellent sensitivity to low levels of alpha, beta, gamma, and x-rays. The digital readout is displayed with a red count light and a beeper sounds with each count detected. Other features include an adjustable timer, external calibration controls, and selectable alert.DetectorInternal Halogen-quenched, uncompensated GM tube with thin mica window, 1.4-2.0 mg/cm2 areal density. Effective diameter of window is 45 mm (1.77 in.). Radiation symbol on front label and end panel marks the center of the detector.Operating RangemR/hr - .001 (1μR) to 100CPM - 0 to 350,000μSv/hr - .01 to 1000CPS - 0 to 5000Total Counts- 1 to 9,999,000 countsAccuracy (Referenced to Cs137)Typically ±15% from factory, ±10% with NIST Source CalibrationEnergy SensitivityDetects Alpha down to 2 MeV. Detects Beta down to .16 MeV; typical detection efficiency at 1 MeV isapprox. 25%. Detects Gamma down to 10 KeV through the detector window. 3340 CPM/mR/hr (137Cs). Smallest detectable level for 125I is .02 μCi at contact.Built-In EfficienciesSulfur (35S), Strontium (90Sr/y), Cesium (137Cs), Phosphorus (32P), Carbon (14C), Iodine (131I), Cobalt (60Co), and AlphaSelectable Alert Set RangemR/hr .001 - 50 and CPM 1 - 160,000. 70db @ 1m. Pulsating beeper sounds the alert. Adjustable alert levels are used for mR/hr / CPM, and μSv/hr / CPS. Alarm will sound when in Timer Mode when set alarm threshold is reached.Anti-SaturationMeter will hold at OVER RANGE in fields as high as 100 times the maximum reading.Averaging PeriodsDisplay updates every 3 seconds. At low background levels, the update is the average for the past 30-second time period. The timed period for the average decreases as the radiation level increases.Energy Response CurveDisplayBacklit 4 digit liquid crystal display with indicators.Count LightRed LED flashes with each radiation event.Audio IndicatorInternally mounted beeper (can be switched off for silent operation)Outputs3.5mm jack for CMOS or TTL devices and counts to computer or datalogger.USB for use with Free Observer USB Software for PCsPower RequirementsOne 9-volt alkaline battery. Battery life is approx. 1200 hours at normal background. USB-AC Adapter.Temperature Range-10oC to 50oC (14oF to 122oF)Weight454 g (16 oz.) without battery.Size150 x 80 x 30 mm (5.9 x 3.1 x 1.2 in.).IncludesXtreme Boot, Carrying Case, Certification of Conformance, USB Cable, Observer USB SoftwareOptionsWipe Test Plate, & StandLimited Warranty1 year limited warranty.