1. Low background Alpha/Beta Product Line

2. Multi-Detector Low Background Alpha/Beta Counter
Protean Instrument Corporation
Multi-Detector Low Background Alpha/Beta Counter

3. Low Back Alpha-Beta Counting
Industry accepted/standard method for the measurement of total alpha and beta emitting radionuclides in the environment
Surface removable contamination
Drinking water qualification
USEPA 900
Safe Water Drinking Act (SWDA)
WHO Guidelines
Specific radionuclide determinations
Radium 226/228, Strontium 89/90, total Uranium
Provides sensitivity (efficiency and background) to meet regulatory compliance detection limits

4. Low Background Proportional Counting
Manual Systems.
Automatic Systems with sample changers
Multi-Detector Systems
Gas Flow Systems
Gasless Systems
Windowless Systems (Ultra Sensitive Low Background Systems)

7. Multi-Detector Low Background Alpha/Beta Counter
Protean Instrument Corporation
Multi-Detector Low Background Alpha/Beta Counter

8. MDS Summary The MDS is: 4, 8, 12, 16, 20 detector manual system
Gas flow proportional detectors
Ultra low background
Ultra thin window
PC controlled

9. Physical - Size Footprint Bench weight: 34 x 25 in. / 81 x 64 cm
Each 4 detector chassis
Bench weight:
1200 lbs. / 545 kg. for each 4 detector chassis due to advanced shield design
The MDS has more shielding per detector, more uniform shielding per detector, and more shielding between adjacent detectors

10. Physical - Summary MDS is: Easy to place in a crowded lab
Form factor, Weight (340 lbs./sq. ft.),
Connection interface
NO Rear Access Room Required!

11. Counting Performance*
(Typical / Warranted)
0.05 / 0.06
0.7 / 0.8
Typical
40%
12%
55%
Alpha Bkg. CPM
Beta Bkg. CPM
Alpha Eff. 4pi
Po210
Th230
Am241
Beta Eff. 4pi
C14
Sr90
Tc99
Cs137

12. Performance Advantage In Design
The MDS shield design provides several important benefits for the customer:
1. Lower background, Much better protection against crosstalk between detectors
2. The shield design allows service, especially window changes, from the front, without any shield disassembly

13. Designed For Redundancy and Better Isolation
MDS - ALL INDEPENDENT ELECTRONICS PER DETECTOR

14. Redundancy in Configuration for MDS-20
MPC-9604
MPC-9604
MPC-9604
MPC-9604
MPC-9604

15. Operating Features Sample Loading
Why are independent drawers important when Canberra and Berthold claim independent start/stop for each detector?
All other systems interrupt counting on all detectors in a drawer when that drawer is opened, lengthening the real count time.
The MDS allows true independent start/stop of count times, regardless of what happens with other detectors …

16. Design Advantage Sample Loading
MDS has 1 independent drawer per detector

17. Maintenance Easy Design
MDS Maintenance Access

18. Advantages in Sample Loading
Why are independent drawers important when Canberra and Berthold claim independent start/stop for each detector?
All other systems interrupt counting on all detectors in a drawer when that drawer is opened, lengthening the real count time.
The MDS allows true independent start/stop of count times, regardless of what happens with other detectors …

19. Design Advantage Sample Loading
MDS has 1 independent drawer per detector

20. Design Advantages In Gas Flow
Factory set flow rate with Gas-PRO fully proportional gas flow rate sensing that halts counting in the case of any gas flow failure.
Detected failures include empty tank, blocked gas line, leaking detector window, broken detector window.
Detectors are connected in parallel, making it very simple and fast to disconnect a detector for service

21. Gas-PRO The MDS has Gas-PRO Gas-PRO monitors the entire gas path
Gas-PRO i will not allow sample counting if the gas flow rate is incorrect
Gas-PRO is a standard feature of every Protean system with a gas flow detector.

22. Gas Sensing the Old Way Other Systems
A gas pressure sensor is at the beginning if the gas path.
Any fault downstream has no effect on the sensor.

23. Gas Sensing the PIC Way
The gas flow rate sensor is at the end of the gas path, after the detectors.

24. Maintenance Easy Design
MDS Maintenance
The MDS has complete front of system access for everything
The detector window is completely accessible from the front
No lead has to be lifted for any repairs
Window change within minutes !
NO REAR ACCESS IS REQUIRED !

25. Maintenance Easy Design
MDS Maintenance Access

26. Maintenance Easy Design
MDS Maintenance
Electronics
All critical functions are in individual modules
Each function/module can be replaced without affecting others
Each module has minimal connections and mounting points, making them very easy to exchange
Re-calibration is needed only if the replaced module changes calibration

27. Maintenance Easy Design
Maintenance Summary
The MDS is designed for optimum ease of user maintenance, with no sacrifice in cost or performance, all routine maintenance can be performed quickly and easily

28. Operating Features System Control Software:
MDS uses software written to make it easy for End User
The MDS is the only system using software written with current development tools

29. Operating Features System Control
MDS database is extremely easy to use, nearly impossible to break

30. Operating Features Report Generation Data Access
The MDS provides self contained reports without relying on external applications
Data Access
MDS stores data in MS Access format
The MDS database is simple, reliable, and easy for customers to use

31. Counting Features
MDS has “Count to MDA” which allows the system to adjust count time according to the sensitivity required and each samples characteristics
Independent detector drawers PLUS Count to MDA allows sample throughput greater than competitors.

32. Counting Feature
MDS has “Count to MDA” which allows the system to adjust count time according to the sensitivity required and each samples characteristics

33. Product Comparison Summary
PIC MDS
Much better counting performance
Independent sample drawers & detectors
Redundancy of electronics for reliability
Better Detector design
Vastly better maintenance
Reliability + service cost
Provides Factory Regional Support Center

34. Low background Alpha/Beta Systems