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Minimum Sensitivity: 0.5 mm to 1.0 mm steel at 10 meters/minute conveyor speed.
System Description:
Detectors: Linear Array of individual solid state detectors
Number of Channels 80
Type High Z Scintillator coupled to photodiode
Pitch 3.81 mm
Total Length of Array 304.8 mm (12")
Response time ~ 1 msec
Analog-to-Digital Conversion 12 Bit (16 Bit possible); 100 kHz rate
X-Ray System: Hi Frequency (20-50 KHz) DC X-Ray Source
Maximum Energy 100 kV (two supplies +50 kV and -50 kV
Maximum Current 1 mA
X-Ray Tube Configuration Dual Ended (+/- 50 kV)
Shielding Shielded to meet 21 CFR regulations
X-Ray Fan Angle ~ 45 degrees
Computer System: Complete Pentium based desktop PC
Software System: Complete Automated Data Collection and Analysis Routine
Data Collection Software: Custom data collection routine
Data Analysis Software Custom On-line Analysis routine
Reject Signal: The data collection and data analysis routines work concurrently to collect and analyze
the data from the detector array to detect foreign objects. When a foreign object is detected in the
detector data then the computer generates a TTL signal in real-time. This TTL pulse is available to
customer for initiating any type of reject mechanism.
System Components:
Detector System
80 Channel Detector Array with shielding and collimation
+ 12V, -12V, +5V Power Supply system for Detector Array
15 Conductor Cable (3 meter long) for Detector Array
50 conductor cable for Detector Signal to ADC Board
Analog-to-Digital Board:
12 or 16 Bit commercial ADC Board with 100,000/second maximum data rate capability
The ADC Board will be located inside the computer system.
X-Ray System:
+ 50 kV High Voltage Supply
- 50 kV High Voltage Supply
2 High Voltage Cables (1 meter long)
100 kV- 1 mA X-ray Tube (shielded)
Low Voltage DC Power Supply for HV supplies
Interconnection Cables
DC Voltmeters for kV and mA
Computer System:
Pentium Computer with hard, floppy and CD ROM drives, mouse, key board and SVGA monitor.
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