Model 3000 Survey meter User’s Manual Section 3
Ludlum Measurements, Inc. Page 3-1 April 2021
Specifications
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Detector: may be Geiger-Mueller (GM), scintillator, or proportional
HV Range: 400-1500 Vdc
Threshold Range: 4-100 mVdc
Linearity: within 10%
Resolving Time: approximately 5 µsec as defined by IEC 60325
Alarms: count rate, exposure/dose, and count alarm set points adjustable over
the display range
Overload: high count rate saturation protection prevents false display of lower
count rates
Zero Protection: after a user-settable number of seconds of no pulses from
detector, unit will flash a zero reading and the alarm audio will be triggered
Dead Time Correction: employs first and second order corrections for
extended performance
LCD Display: 3-digit LCD with large 20 mm (0.8 in.) digits, (k)cps, (k)cpm,
(k)Bq, (k)dpm, (µ)(m)R(/h), (µ)(m)Sv(/h), low-battery indicator, MAX,
ALARM, AUDIO
Display Range:
0.0 cps to 99.9 kcps
0.00 cpm to 999 kcpm
0.00 Bq to 99.9 kBq
0.00 dpm to 999 kdpm
0.00 µR/h to 999 R/h
0.00 µSv/h to 999 Sv/h
Headphone Jack (optional): 1/8 inch stereo jack for use with headphones for
audio output. It is located to the left of the detector connector.
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