Ludlum Model 3002

Alpha Beta Survey Meter

Model 3002 alpha beta survey meter by Ludlum

Features

The Model 3002 is a durable, lightweight instrument designed for alpha and beta radiation survey with an external detector. It features a large, easy-to-read LCD screen and audible alarms and is controlled using a simple five-button interface. The unit body is made of high-impact plastic and splash resistant construction allows the instrument to be used outdoors.

Three modes of operation are available – RATE, MAX, and COUNT – which can be selected by pressing the MODE button. Measurements can be collected in cps, cpm, Bq, or dpm units. Pressing the α-β button switches between alpha, beta, or alpha+beta measurements. When enabled with the optional Lumic Data Logger Kit (see Options), data can be logged in any of the operational modes using the LOG button on the handle. Up to 1000 data points can be stored internally.

Instrument setup can be done either through the front-panel controls or via the Lumic Calibration Kit (see Options). The Model 3002 is shipped ready to use with batteries and calibration certificate.

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)
Controls
ON/OFF: Press to turn ON; Tap to acknowledge alarms and silence alarm tone; Press to reset sigma audio alarm; Hold for OFF α-β: Changes the display between alpha, beta, and alpha + beta measurements
AUDIO: Turn "click" audio On/Off; 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 min). Number of modes can be reduced in setup.

LOG: Press to store meter reading (requires Lumic Data Logger Kit, see Options)
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 flash a zero reading and the alarm audio will be triggered
High Voltage 400 to 2200 Vdc
Threshold
Alpha: -2 to -500 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 configured 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 certified 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)

Ludlum Model 3002 manual

Manual