Inspector Survey Meter Radiation detection in a compact hand-held unit
The Inspector is a microprocessor controlled radiation measuring 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 audible beep, providing instant indications of the radiation level. Other benefits include an adjustable timer and external calibration controls.
External 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 label marks the center of the detector.
mR/hr - .001 (1µR) to 100 CPM - 0 to 350,000
µSv/hr - .01 to 1000 CPS - 0 to 5000
Total/Timer - 1 to 9,999,000 counts
Accuracy (Referenced to Cs137)
Typically ±15% from factory, ±10% with NIST Source Calibration
Detects Alpha down to 2 MeV. Detects Beta down to .16 MeV; typical detection efficiency at 1 MeV is
approx. 25%. Detects Gamma down to 10 KeV through the end window. 3340 CPM/mR/hr (Cs137). Smallest detectable level for I125 is .02 µCi at contact.
Built-In Efficiencies Sulfur (S35), Strontium (Sr/y90), Cesium (Cs137), Phosphorus (P32), Carbon (C14), Iodine (I131), Cobalt (Co60), and Alpha
Selectable Alert Set Range mR/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-Saturation Meter will hold at OVER RANGE in fields as high as 100 times the maximum reading.
Averaging Periods Display 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 Curve
Display Backlit 4 digit liquid crystal display with indicators. Display updates every 3 seconds.
Count Light Red LED flashes with each radiation event.
Audio Indicator Internally mounted beeper (can be switched off for silent operation)
Outputs 3.5mm jack for CMOS or TTL devices and counts to computer or datalogger.
USB for use with Free Observer USB Software for PCs
Power Requirements One 9-volt alkaline battery. Battery life is approx. 2160 hours at normal background.
Temperature Range -10ºC to 50ºC (14ºF to 122ºF)
Weight 635 g (22.4 oz.)
Size 150 x 80 x 30 mm (5.9 x 3.1 x 1.2 in.)
Probe: 260 X 70 X 25 mm (10.25 X 2.75 X 1 in)
Probe Construction Anodized aluminum housing
Size - Approx. 8.75 in. (22.23 cm) Dia.: 2.75 in. (7.0 cm)
Connector - BNC
Handle - Black foam grip
Includes Carrying Case, Observer USB Software Download, USB Cable, Certification of Conformance.