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Detector: Pancake GM detector, stainless steel screen
Window Area:
Active: 15.51 cm2
Open: 12.26 cm2
Efficiency (4π):
Alpha
239Pu: 11%
Beta
99Tc: 14%
32P: 32%
14C: 2%
90Sr/90Y: 22%
125I: 0.2%
Gamma
5.5 cps per µSv/hr (3300 cpm per mR/hr) (137Cs)
99mTc: ≤ 1%
Display: 3½ digit LCD with large 12.7 mm (0.5 in. ) digits, low-battery indicator, MAX, ALARM
Units: (k)cps, (k)cpm
Range:
0.1 cps to 1.99 kcps
1 cpm to 99.9 kcpm
Linearity: ± 10%
Backlight: Built-in ambient light sensor automatically activates low-power LED backlight. May be configured for 'Continuous On' operation (will reduce battery life).
LEDs:
Daylight-visible green LED for "OK"
3 red LEDs for 3 levels of alarm
Controls:
ON / OFF / QUIET: Press to turn ON; Tap to alternate between 'click' audio and QUIET; Hold for OFF
MODE: Alternates between NORMAL (count rate), MAX (captures peak rate), and TIMED FRISK (user-selectable preset count time from 0 to 20 min.)
Response Time: User-selectable from 1 to 60 seconds or Auto-response rate FAST or SLOW
Resolving Time: Approximately 110 µs as defined by IEC 60325
Alarms: Up to three count rate alarm setpoints, adjustable over the display range
Overload Protection: High count rate saturation protection prevents false display of lower count rates
Loss of Count Protection: After 60 seconds of no pulses from detector, unit will flash a zero reading and the alarm audio will be triggered
Click Audio: Greater than 60 dB at 0.6 m (2 ft)
HV Testpoint: Accessible by removing battery cover, allows HV measurement and pulse injection for calibration using optional cable (PN: 8303-1044)
Power: Two 'AA' batteries
Distance from Surface Plane to Screen: 0.32 cm (0.125 in.)
Size (H x W x L): 4.6 x 6.9 x 27.2 cm (1.8 x 2.7 x 10.7 in.)
Weight: 0.45 kg (1.0 lb)
