Inspector Survey Meter

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Low-level radiation sensitivity in a compact hand-held unit

Monitors alpha, beta, gamma, and x-ray radiation
Range: 0-300,000 cpm
4-digit LCD readout
Red LED count light
Audible beeper (can be switched off)
External calibration controls
Adjustable timer with:
1-minute sampling periods from 1 to 10 minutes
10-minute sampling periods from 10 to 60 minutes
1-hour sampling periods from 1 to 24 hours
Operates 200 hours on 9V battery
Wipe Test Plate positions wipe directly in front of detector at 1 cm distance; protects GM from
damage/contamination when meter is not in use
User selectable display for mR/hr or sieverts

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.

Shielded Holder

Maintain full function of the 078-513 Inspector Survey Meter while shielding it laterally to reduce the influence of background radiation. Constructed of steel with 0.5" thick lead lining built into left and right sides, the holder conveniently supports the Inspector while allowing full operation of the optional sliding wipe test plate -- without having to lift the meter. This accessory is especially suited for use in mobile units, or where the meter is frequently used for standardized procedures in a single location. The unit is supplied with strips of reclosable fastening material for affixing to countertops or other surfaces.

Specifications

Detector: Halogen-quenched uncompensated GM tube with thin mica
window, 1.4-2.0 mg/cm2 area density.
Window: 1.75" (45 mm) effective diameter
Display: Four-digit liquid crystal display with indicators
Averaging Periods: Display will update every three seconds; at low background levels, the update is the moving average for the past 30-second time period; time period for moving average decreases as radiation level increases
Gamma Sensitivity: 3500 cpm/mR/hr (referenced to Cs-137); smallest detectable level for I-125 is .02 µCi at contact
Operating Range:
mR/hr - .001 (1µR) to 100 mR/hr
µSv/hr - .01 to 1000
CPM - 0 to 300,000
CPS - 0 to 5000
Total/ Timer - 1 to 9,999,000 counts
Accuracy (Referenced to Cs-137):
mR/hr ± 15% from 0 to 30 mR/hr, ± 20% from 30 to 50 mR/hr
CPM ± 15% from 0 to 100,000 cpm, ± 20% from 100,000 to 300,000 cpm
Timer: Can set 1-minute sampling periods from 1 to 10 minutes, 10-minute sampling periods from 10 to 60 minutes, 1-hour sampling periods from 1 to 24 hours
Count Light: Red LED flashes with each radiation event
Audio Indicator: Internally mounted beeper (can be switched off for silent operation)
Outputs: Dual miniature jack drives CMOS or TTL devices for counting to computer or data logger; (Submini jack input allows for electronic calibration)
Utility Menu: Options accessed by holding down "+" button while turning instrument on: 3-second (fast response), switch from mR/hr and CPM to µSv/hr and CPS, reset cal factor to 100, adjust probe settings, adjust the CAL factor, reset all setting to original factory setting (default)
Anti-Saturation: Meter will hold at full scale in fields as high as 100 times the maximum reading
Power Requirements: (1) 9-volt alkaline battery
Temperature Range: 14°F to 122°F (-10°C to +50°C)
Battery Life: Typically 200 hours at normal background radiation levels
Dimensions: 5.9" h x 3.3" w x 1.2" d (15 x 8 x 3 cm)
Weight: 10.6 oz (300 grams) without battery