ASC-950-DP automatic sample change counter

ASC-950-DP is a high-speed counter system equipped with dual scintillation detectors that require no gas support and are easy to move. The optional anti-cosmic ray coincidence detector can reduce system background interference to a limited extent. DUO Express software provides a comprehensive interface that allows users to easily carry out program development, data management, and system control and maintenance. Users can connect multiple devices to facilitate user applications. This counter is ideal for standard health physics applications such as swabbing samples and air filters.

Contains 1 set of PIC connecting cable, 1 set of carrier set and 55 1/8-inch Inserts.

Optimized for high-energy beta rays

Typical efficiency
radioactive source	top	1/8" bottom	1/4" bottom	5/16" bottom
Pu-239	34%	30%	24%	21%
SrY-90	45%	40%	35%	34%
Tc-99	24%	21%	19%	18%
Background
Conditions	Guaranteed Value (CPM)		Typical (CPM)
	Alpha	Beta	Alpha	Beta
With lead shield and compliance detector	<0.2	<25	0.05	12
With coincidence detector, without lead shielding	<0.2	<30	0.03	15
With lead shielding, no compliance detector	<0.2	<55	0.08	35
Without lead shielding and compliance detector	<0.2	<65	0.06	40

Optimized for low-energy beta rays

Typical efficiency
radioactive source	top	1/8" bottom	1/4" bottom	5/16" bottom
Pu-239	35%	30%	24%	22%
SrY-90	47%	41%	36%	35%
Tc-99	26%	24%	20%	19%
Background
Conditions	Guaranteed value (CPM)		Typical (CPM)
	Alpha	Beta	Alpha	Beta
With lead shield and compliance detector	<0.2	<25	0.05	13
With coincidence detector, without lead shielding	<0.2	<30	0.05	23
With lead shielding, no compliance detector	<0.2	<55	0.05	41
Without lead shielding and compliance detector	<0.2	<65	0.06	55

Equipment indicators

sample detector	2 in (5.1 cm) diameter. ZnS + plastic scintillation detector
entrance window	Aluminum film, 80 µg/cm2
Sample size	2 in (5.1 cm) diameter, 1/8, 1/4, or 5/16 in (3.2, 6.3, or 7.9 mm) s
Automatic sample change	Supports automatic sample changing device with barcode reading, capacity 50, sample range: 1-999
Measurement mode	Alpha only, Alpha/Beta simultaneously, Alpha then Beta
user interface	touch screen
Data export	USB PIC connection, USB memory
power supply	110–240 V ac, 50–60 Hz
Size	50 Sample: 36 in H x 23.5 in W x 23.5 in D (91.4 x 59.7 x 59.7 cm) 100 Sample: 54 in H x 23.5 in W x 23.5 in D (137.2 x 59.7 x 59.7 cm)
weight	50 samples: 110 lb (49.9 kg) 100 samples: 120 lb (54.4 kg)