Alpha/Beta Sample Counter Part Number: 48-3448 INDICATED USE: simultaneous alpha beta sample counting SCALERS: 2 each six-digit LCD displays with back lights providing a range of 0–999999 counts SCALER LINEARITY: reading within 2% of true value COUNT TIMER SETTINGS: 0.1, 0.5, 1, 2, 5, 10, and 60 minutes. PC position facilitates other user-defined values set by software program. BACKGROUND: alpha: 3 cpm or less beta gamma: typically 50 cpm or less (10 μR/hr field) AUDIO: built in unimorph-type speaker with volume control to provide a dual tone click-per-event audio STATUS INDICATORS: backlit indicators for daily QC check needed (QC) overload condition (OL) counting in cpm or dpm mode (CPM/DPM) count has exceeded alpha alarm set point (αAL) count has exceeded beta alarm set point (βAL) CONNECTOR: series “C” THRESHOLDS: alpha: -120 mV beta: -4 mV beta window: 50 mV SCALERS: two each six-digit LCD displays with backlights providing a range of 0–999999 counts SCALER LINEARITY: reading within 2% of true value COUNT TIMER SETTINGS: 0.1, 0.5, 1, 2, 5, 10, 60 minutes or the user-defined PC setting defined during setup using the RS-232 port. User-defined count time may be set from 0.1 to 546.1 minutes. HIGH VOLTAGE: adjustable from 200–2500 Vdc DATA OUTPUT: 9-pin RS-232 port for connection to PC for data download and adjustment of setup parameters. A one meter RS-232 to USB adapter cable is included. PC interface software is available for download on our website. POWER: 250 watts at 95–250 Vac, 50–60 Hz single phase; internal 12 Vdc, 1.2A/hr, trickle- charged battery will provides power up to eight hours CONSTRUCTION: aluminum housing with gray powder coat paint and sub-surface printed front panel TEMPERATURE RANGE: -20 to 50 °C (-4 to 122 °F) SIZE: 24.1 x 13.5 x 25.4 (9.5 x 5.3 x 10.0 in.) (H x W x D) WEIGHT: approximately 2.7 kg (6 lb) Model 3030E utilizes an external, side-mounted sample counter. Common external counters are Model 43-10 (alpha only) or Model 43-10-1 (alpha beta). SOFTWARE: computer based to perform setup and calibration routines including: background subtract, crosstalk correction, cpm/dpm modes, daily QC check parameters, alarm levels, and automatic plateaus. All parameters are stored in the instrument in non-volatile memory. The supplied software is capable of logging and storing the following: Sample Number, Sample Date, Sample Time, Alpha Count, Beta Count, Sample Type, Comments. Ludlum Measurements, Inc. P.O. Box 810, Sweetwater, Texas 79556 Web: http://www.ludlums.com Tel: 800-622-0828 / 325-235-5494 / Fax: 325-235-4672 / Email: [email protected] Note: specifications subject to change without notification. We are not responsible for errors or omissions.