Ludlum Measurements 52-1, Manual

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Model 52-1 Family Technical Manual
Section 2
Ludlum Measurements, Inc. Page 2-1 July 2018
Specifications
Display (Setup):
2 line-by-20-character LCD, backlit when operated from
AC power
Display (User):
five large status LEDs on one side of portal, and detector
LEDs to show alarm location
Detector High Voltage:
700-1200 V
Detector Threshold:
-4 mV
Count Time:
adjustable from 0 to 20 seconds (“0” indicates walk-through
mode)
Power:
can be powered from either a 85-250 Vac, 50/60 Hz, using a
supplied 12 Vdc wall adapter; supplied 12 Vdc cigarette lighter adapter
cable; or from three or six D cell batteries. Typical battery life is 69 hours
using six fresh alkaline batteries and 28 hours using three fresh batteries.
Output:
RS-232 and dry contacts for radiation alarm and failure
conditions
Sensitivity:
1
µ
Ci (37.5 kBq)
137
Cs in walk-though mode in 10 µR/hr (0.1
µSv/h) background field
Energy Response:
30 keV to 3 MeV
Audio:
an alarm with an adjustable baffle for portal entry and incomplete
audio, and a continuous beeping for radiation alarm and instrument failure
audio. The "AUDIO ON?" parameter in setup mode (default Yes or
enabled) can be changed to NO to disable the audio.
Section
2