Model 3001 Multi-Detector Survey Meter
User’s Manual
Section 3
Ludlum Measurements, Inc.
Page 3-2 April 2017
User Controls
:
ON/ ACK – long press to turn ON, tap to acknowledge alarms and
silence alarm tone, long press to reset Sigma Audio alarm, long press to
reset Rate, and hold for OFF. Tap to turn “click” audio on/off, or turn
Sigma Audio beep on/off
MODE – alternates between RATE (count rate), MAX ( captures peak
rate), and COUNT ( user-selectable preset count time from 0 to 10
minutes)
DETECTOR – tap to change active detector to the next enabled
detector
UNITS – changes the units from count rate (cpm, cps), to
dose/exposure (µSv/h, mR/h) or disintegration (dpm, Bq)
Response Time
: user-selectable from 1 to 60 seconds, or auto-response rate
FAST or SLOW
Audio
: click audio greater than 65 dB at 0.6 m (2 ft), alarm audio at greater than
72 dB, approximately 4.5 kHz
Power
: four alkaline “AA” batteries
Battery Life
: approximately 500 hours of operation (as low as 100 hours with
backlight configured for continuous-on), 16-hour low-battery warning
Maximum Current:
35 mAdc
Construction
: high-impact plastic with water-resistant rubber seals and
separate battery compartment
Temperature Range:
-20 to 50 ˚C (-5 to 122 ˚F), may be certified for
operation from -40 to 65 ˚C (-40 to 150 ˚F)
Environmental Rating:
NEMA (National Electrical Manufacturers
Association) rating of 4x or IP (Ingress Protection) rating of 65
Size
: 16.5 x 11.4 x 21.6 cm (6.5 x 4.5 x 8.5 in.) (H x W x L)
Weight
: 0.9 kg (2.0 lb)
