Introduction to low background alpha beta measuring instrument:

Low background alpha beta measuring instrumentMeet the requirements of GB/T 5750.13-2006 "Standard Test Methods for Drinking Water - Radioactive Index", GB 8537-2008 "Drinking Natural Mineral Water", GB 5749-2006 "Sanitary Standards for Drinking Water", GB/T 8538-2008 "Test Methods for Drinking Natural Mineral Water", GB/T 11682-2008 "Low Background Alpha and/or Beta Measuring Instruments", JJG853-2013 "Verification Regulations for Low Background Alpha and Beta Measuring Instruments" and other standards.

Product parameters:
1. Background count rate
α≤ 0.0015 cm-2 ·min-1
β≤ 0.10 cm-2 ·min-1
2. Detection efficiency and efficiency ratio
α ≥ 85.5% (efficiency ratio α ≥ 95%) [2 π efficiency ratio for 239 Pu α source (active region Φ 30mm)]
β ≥ 54% (efficiency ratio β ≥ 60%) [2 π efficiency ratio for 90Sr-90Y β source (active region Φ 20mm)]
3. Efficiency stability (24h)
α≤2%
≤3%
4. Cross channel ratio
Alpha rays on beta channel: ≤ 0.5%
Beta rays on alpha channel: ≤ 0.1%
5. Instrument sensitivity
α：0.15 s-1 · (Bq·g)-1
β：0.35 s-1 · (Bq·g)-1
6. Instrument detection lower limit
α：0.005 Bq (100min)
β：0.025 Bq (100min)
7. Anti conformity efficiency:>99%
8. Operating environment
Environmental temperature: (5~40) ° C
Relative humidity:<90% (+40 ° C)
9. Power supply: AC 220V (± 10%), 50Hz
Power consumption: ≤ 250 W
10. Dimensions and weight
(500 × 500 × 910) mm, approximately 500kg

Product Features:

• Using an alpha beta dual scintillator detector, high sensitivity, low background, high stability, and good consistency
• Adopting high-precision time-domain discrimination technology, with high detection efficiency and low cross channel ratio
• The instrument is divided into three configurations: 2-channel, 4-channel, and 8-channel, which can be easily upgraded seamlessly
• Using TCP/IP protocol for communication, the analyzer and computer are connected through Category 5e Ethernet cables, which have strong anti-interference ability and fast communication speed
• Adopting real-time storage mechanism, the instrument will not lose the measured data due to power outage
• Adopting the same direction anti coincidence design, the structure is more compact, the volume is smaller, and the shielding effect is better
• The software interface adopts a user-friendly design, displaying real-time counting fluctuation curves and quickly obtaining various detection indicators. It is easy to operate and has strong practicality

Main configuration list:

(Dual channel)

1. 1 set of lead room
2. 1 set of cabinet
3. 1 high and low voltage power supply
4. 2 sets of main probes (including dual flash detectors and photomultiplier tubes)
5. 1 set of anti coincidence probe (including plastic scintillator and photomultiplier tube)
6. 100 sample disks (Φ 45mm)
7. 3 high-voltage cables
8. 3 low-voltage cables
9. 3 signal cables
10. Check the source set
11. 1 set of computer (including data acquisition card)
12. 1 printer
13. 1 spare CD
14. 1 instrument manual
15. special tool
16. One safety power socket
17. One product calibration certificate, one certificate of conformity, one warranty certificate, and one instrument nameplate

(Four channels)

1 set of lead chamber

2. One LinBox analyzer

3. Four sets of main probes (including dual flash detectors and photomultiplier tubes)

4. One set of anti coincidence probe (including plastic scintillator and photomultiplier tube)

5. Sample disk (Φ 45mm) 100 pieces

6. 1 set of cable (15 pieces)

7. Check one set of sources

8. One computer

9. One printer

10. One spare CD

11. One instrument manual

12. One safety power socket

13. One product inspection certificate, one qualification certificate, one warranty certificate, and one instrument nameplate

(Eight channels)

1 set of lead chamber

2. One LinBox analyzer

3. 8 sets of main probes (including dual flash detectors and photomultiplier tubes)

4. Two sets of anti coincidence probes (including plastic scintillators and photomultiplier tubes)

5. Sample disk (Φ 45mm) 100 pieces

6. 1 set of cable (15 pieces)

7. Check one set of sources

8. One computer

9. One printer

10. One spare CD

11. One instrument manual

12. One safety power socket

13. One product inspection certificate, one qualification certificate, one warranty certificate, and one instrument nameplate