Ludlum Measurements, Inc. P.O. Box 810, Sweetwater, Texas 79556
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: http://www.ludlums.com Tel: 800-622-0828 / 325-235-5494 / Fax: 325-235-4672 / Email: [email protected]Note: specications subject to change without notication. We are not responsible for errors or omissions.
Specications
Part Number 48-4037
COMPATIBLE DETECTORS: alpha-beta scintillation or gas proportional
DISPLAY: 3-digit auto-ranging LCD with large 20 mm (0.8 in.) digits. Units: (k)cps, (k)cpm, (k)Bq, (k)dpm. Indicators:
bar graph, radiation type (alpha (α), beta (β)), MAX, ALARM, USB, audio, low battery.
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
LINEARITY: within 10%
BACKLIGHT: built-in ambient light sensor automatically activates low-power LED backlight unless internal
dipswitch is set to continuous-on (will reduce battery life)
USER CONTROLS:
• ON/OFF: press to turn ON; tap to acknowledge alarms and silence alarm tone; hold for OFF
• α-β: changes the display between alpha, beta, and alpha + beta measurements
• AUDIO: turns “click” audio On/O
• MODE: alternates between RATE (count rate), MAX (captures peak rate), and COUNT (user-selectable preset
count time from 0 to 10 minutes). Number of modes can be reduced in setup.
• LOG: Press to store meter reading (requires Lumic Data Logger Kit)
DATA LOGGING: can store up to 1000 data points internally. Requires Lumic Data Logger Kit (PN: 4498-1019).
RESPONSE TIME: user-selectable from 1 to 60 seconds, or auto-response rate FAST or SLOW
ALARMS: count rate and scaler alarm setpoints adjustable over the display range. Separate alpha and beta alarm
LEDs.
OVERLOAD PROTECTION: high count rate saturation protection prevents false display of lower count rates
LOSS OF COUNT PROTECTION: after a user-settable time interval (default 60 seconds) of no pulses from detector,
unit will ash a zero reading and the alarm audio will be triggered
HIGH VOLTAGE: 400 to 2200 Vdc
THRESHOLD: Alpha: -2 to -350 mVdc, Beta: -2 to -99.9 mVdc
AUDIO: alarm audio greater than 80 dB at 0.6 m (2 ft.), higher pitched alpha tones and lower pitched beta clicks
POWER: four alkaline or four rechargeable “AA” batteries (instrument does not support in-device charging)
BATTERY LIFE: approximately 750 hours of operation (as low as 100 hours with backlight congured for continuous-
on), 16-hour low battery warning
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 certied for operation from -40 to 65 °C (-40 to 150 °F)
ENVIRONMENTAL RATING: NEMA rating of 5 or IP rating of 53
SIZE (H x W x L): 16.5 x 11.4 x 21.6 cm (6.5 x 4.5 x 8.5 in.)
WEIGHT: 0.9 kg (2.0 lb)
Options
Lumic Calibration Kit (PN 4498-1018): Includes software and required cable. Lumic Calibration Software allows
reading and writing of important instrument parameters via a USB port.
Lumic Data Logger Kit (PN 4498-1019): Includes software and required cable. Lumic Data Logger Software is
required to use instrument data logging features.
