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Model 3030-2

Simultaneous Alpha-Beta Sample Counter

Part Number: 48-3992

Features

Fully Integrated Alpha-Beta Sample Counter
Simultaneous Alpha and Beta Counting
Shielded 5.1 cm (2 in.) Diameter Sample Tray
Independent Readouts
CPM, Bq, & CPS Modes
Background Subtraction
Alpha/Beta Alarms
QC Check
8 Hour Battery Operation
Real Time Clock
RS-232 Interface

The Model 3030-2 Simultaneous Alpha-Beta Sample Counter is a dual-channel counter designed for simultaneous alpha and beta sample measurement.

The counts per minute (CPM), Becquerel (Bq), or counts per second (CPS) modes may be enabled to allow the count to be automatically, and in real time, in CPM, Bq, or CPS. While in Bq and CPS display modes the display will show the count with two decimal places.

The counter incorporates an internally housed ZnS(Ag) plastic scintillator detector with shielded 5.1 cm (2 in.) diameter stainless steel sample tray. This system supplies independent backlit LCD readouts to support alpha and beta sample counting.

Specifications

Indicated Use	Simultaneous alpha, beta sample counting
Detector	ZnS(Ag) adhered to plastic scintillation material
Tube	5.1 cm (2 in.) diameter magnetically shielded photomultiplier
Window	0.4 mg/cm²aluminized mylar
Active and Open Area	20.3 cm²
Sample Holder	Brass housing with nickel plated brass sample tray capable of holding up to a 5.1 cm (2 in.) diameter sample
Alpha Efficiency	²³⁹Pu	37%
	²³⁰Th	32%
	²³⁸U	39%
Beta Efficiency	¹⁴C	8%
	⁹⁹Tc	27%
	¹³⁷Cs	29%
	⁹⁰Sr/⁹⁰Y	26%
Cross Talk	Alpha to Beta	≤ 10%
Cross Talk	Beta to Alpha	≤ 1%
Background	Alpha	3 cpm or less
Background	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)
Scalers	Two each six-digit LCD displays with backlights providing a range of 0 to 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.
High Voltage	Adjustable from 200 to 2500 Vdc
Thresholds	Alpha	-120 mV
	Beta	-4 mV
	Beta Window	50 mV
Data Output	9-pin RS-232 port for connection to PC for data download and adjustment of detup parameters. A one meter RS-232 to USB adapter cable is included. PC interface software is available for download here.
Power	250 W at 95 to 250 Vac, 50–60 Hz single phase Internal 12 Vdc, 1.2A/hr, trickle charged battery 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 (H x W x L)	29.2 x 19.1 x 26.7 cm (11.5 x 7.5 x 10.5 in.)
Weight	Approximately 13.2 kg (29 lb)
Software	Computer based software 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 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.

Options

Option	Description	Part Number
Printer	Printer with power adapter, printer paper, cable, and driver software CD.	4167-386
Sample Planchets	Set of 500 aluminum or stainless steel sample planchets.	Depends on material.