Personnel Portal Monitor - Model 52
Specifications
INDICATED USE: Portable personnel monitor (primarily beta sensitive) is designed for ease of transport, can be assembled or disassembled in less than five minutes, and includes a carrying case.
SENSITIVITY: This instrument will detect the beta gamma emissions from a 1 μCi 137Cs source when it is located at mid-frame of the portal monitor in a 10 μR/hr background (per the suggested standard in FEMA report "Contamination Monitoring Standard for a Portal Monitor Used for Emergency Response", Sept 1992).
BODY & HEAD DETECTORS:
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Type: 14 ea. GM pancake detectors (2 per channel)
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Window: 1.7 + 0.3 mg/cm² mica
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Window Active Area:approximately 15.4 cm² (2.4 in²) per detector
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Window Open Area: approximately 12.2 cm² (1.9 in²) per detector
SHOE DETECTORS: 4 ea. (2 per shoe) cylindrical GM detectors
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Wall Thickness: 37 + 7 mg/cm² stainless steel
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Active Length: approximately 22.9 cm (9 in.)
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Sensitivity: 8800 cpm/mR/hr (137Cs)
DISPLAY & CONTROL UNIT
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Display: LCD, 1 line x 16 charaters
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Menu Controls: Select, Save, Exit, Increment Value, Decrement Value
LED INDICATORS
- Ready: (green LED) indicates system is ready for use
- Counting: (green LED) indicates count is in process
- Check OK (green LED) indicates count is completed and no alarms sensed
- Incomplete/Updating: (amber LED) indicates user stepped off portal before count was complete, or that a background update is in progress
- Low Bat/Trouble: (red LED) indicates a low battery or high/low background
- Sum Zones: 8 zones with 3 on the left, 3 on the right, 1 for the head, and 1 for the feet; LEDs are situated around a graphic indicating the relative position to the person
KEY OPERATING PARAMETERS: adjustable by administrator with password input
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Background Count Time: can be set at any point from 0-99 seconds
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Count Time: adjustable from 1-60 seconds
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Forced Background Update: adjustable from 0-99 minutes
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Alarm Hold Time: 1-99 seconds
AUDIO: built-in unimorph speaker with adjustable volume output via menu control
INTERFACE: RS-232 port for connection to printer
POWER: 95-135 Vac (178-238 Vac available), or 6 each "D" cell batteries
BATTERY LIFE: typically 80 hours in a non-alarm condition
CONSTRUCTION: aluminum housing with beige powder coat paint
PORTAL DIMENSIONS: 203.2 x 104 x 43.2 cm (80 x 41 x 17 in.) (H x W x L)
PORTAL INSIDE DIMENSIONS: 194.3 x 81.3 cm (76.5 x 32 in.) (H x W)
TRANSPORT CASE: high-density plastic with wheels and dual padded handles
TRANSPORT CASE DIMENSIONS: 122 x 61 x 30.5 cm (48 x 24 x 12 in.) (H x W x D)
WEIGHT: 29.5 kg (65 lb)
SHIPPING WEIGHT: 42.3 kg (93 lb)
