ASC-950-DP
Features
- Automatic Sample Changer
- 2 in. (5.1 cm) Standard Planchet Diameter
- Standard 50 Sample Capacity (Optional 100 Sample)
- Gross Alpha/Beta Counter
- Dual Phosphor Scintillator Detector
- Gasless
- Lightweight
- Touch Screen Interface
- Easy Window Replacement
- Radon Compensation For Air Filters
- Available Cosmic Guard Detector Option (More Information)
- Optional Lead Shielding to Reduce Background Levels
Overview
The ASC-950-DP is a gasless high-speed counter designed primarily for the health physics user counting smears and air filters. The ASC-950-DP is an updated design which incorporates the same dependable mechanical platform with improvements which include:
- A built-in color touch screen interface
- Ability to export data directly to a computer using the PIC Link option
- Ability to program routines and QC charts on a PC running the included DUO Express software, then transfer the routines to the instrument using a direct-connect PIC Link cable
Part Number: 105-950-DP-G
Specifications
All specifications are subject to change without notice.
Physical
| Sample Detector | 2.0 in. (5.1 cm) diameter ZnS + plastic dual phosphor |
|---|---|
| Window | Aluminized, 80 µg/cm2 |
| Guard Detector | Optional (see Options & Accessories tab) |
| Shielding | Optional lead ring (see Options & Accessories tab) |
| Sample Size | 5.1 cm (2 in.) diameter planchets, 1/8, 1/4, 5/16 in. (3.2, 6.3, 7.9 mm) deep |
| Sample Transport | 50 sample (100 optional) automatic changer with barcode reader with sample range 1 - 999 |
| Count Modes | Alpha only, Alpha/Beta simultaneously, Alpha then Beta |
| Interface | Touch screen |
| Data Export | USB PIC link, USB flash drive |
| Power | 110 - 240 Vac, 50 - 60 Hz input |
| Environment | |
| Size (H x W x D) | 50 Samples: 36 x 23.5 x 23.5 in. (91.4 x 59.7 x 59.7 cm) 100 Samples: 54 x 23.5 x 23.5 in. (137.2 x 59.7 x 59.7 cm) |
| Weight | 50 Samples: 110 lb (49.9 kg) 100 Samples: 120 lb (54.4 kg) |
Performance
Typical Background - Optimized for Lower Energy Betas
| Condition | Alpha (cpm) | Beta (cpm) |
|---|---|---|
| With Guard & Lead | 0.05 | 13 |
| With Guard, No Lead | 0.05 | 23 |
| No Guard, With Lead | 0.05 | 41 |
| No Guard, No Lead | 0.06 | 55 |
Typical Background - Optimized for Higher Energy Betas
| Condition | Alpha (cpm) | Beta (cpm) |
|---|---|---|
| With Guard & Lead | 0.05 | 12 |
| With Guard, No Lead | 0.03 | 15 |
| No Guard, With Lead | 0.08 | 35 |
| No Guard, No Lead | 0.06 | 40 |
Typical Efficiency - Optimized for Lower Energy Betas
| Source | Top | 1/8 in. (3.2 mm) Bottom | 1/4 in. (6.3 mm) Bottom | 5/16 in. (7.9 mm) Bottom |
|---|---|---|---|---|
| 239Pu | 35% | 30% | 24% | 22% |
| 90Sr/90Y | 47% | 41% | 36% | 35% |
| 99Tc | 26% | 24% | 20% | 19% |
Typical Efficiency - Optimized for Higher Energy Betas
| Source | Top | 1/8 in. (3.2 mm) Bottom | 1/4 in. (6.3 mm) Bottom | 5/16 in. (7.9 mm) Bottom |
|---|---|---|---|---|
| 239Pu | 34% | 30% | 24% | 21% |
| 90Sr/90Y | 45% | 40% | 35% | 34% |
| 99Tc | 24% | 21% | 19% | 18% |
Standard Carrier Set (1-50 + QC + Routine)
1/8 in. Carrier Insert, Set of 50
1/4 in. Carrier Insert, Set of 50
5/16 in. Carrier Insert, Set of 50
Planchet, 2 in. x 1/8 in., set of 100
Planchet, 2 in. x 1/4 in., set of 100
Planchet, 2 in. x 5/16 in., set of 100© 2026 Protean Instrument