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Features
Applications
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The Mini-X-OEM is a precision x-ray generator designed for applications that require small size and low power consumption. The source includes a miniature sealed x-ray tube with a transmission-type end window and a high voltage power supply encapsulated in a single radiation-shielded unit. The source is designed specifically to be used as component of a bench-top or hand-held x-ray spectrometer for the detection of trace elements using x-ray fluorescence spectrometry.
The Mini-X-OEM differs from the Amptek Mini-X. The Mini-X has a USB interface to control the voltage and current through PC software and makes it easy to set up XRF experiments. The Mini-X-OEM version is controlled by the end user, by supplying analog voltages to control the voltage and current of the tube. This is the preferred method in table-top and hand-held OEM applications where all the functions of the instrument are controlled by a single internal computer.
| Tube | |
| Tube type | Metal-ceramic |
| Tube voltage | 5 kV – 50 kV |
| Tube current | 0 - 200 µA, See Figure 2 |
| Tube power | 4 Watts maximum |
| Cathode type | Tungsten filament |
| X-ray window | Be, 125 µm |
| Target material | Standard: Au, Ag or Rh Optional: W |
| Focal spot size | Approximately 2 mm |
| Output cone angle | 120°, See Figures 3 and 4 |
| Power Supply | |
| Input voltage | 6 - 12 VDC range |
| Input current | @ 6 VDC: 1.35 A typical, 1.5 A max @12 VDC: 0.70 A typical, 0.75 A max |
| HV stability | < 0.1% |
| Physical Parameters | |
| Radiation shielding | Self-shielded (except output window). Shielding of output window is the responsibility of the customer. |
| Cooling | Conduction, Heat sink to be supplied by customer. |
| Operating temp | -10 °C min, 60 °C max. case temp |
| Ambient humidity | 30 to 90% (non-condensing) |
| Dimensions | Please see mechanical drawing Figure 1. |
| Weight | 340 g |
| Mounting orientation | Any |
| PIN Configuration | |
| PIN 1 | V+, (6-12 VDC) |
| PIN 2 | V+, (6-12 VDC Nom.) |
| PIN 3 | Ground |
| PIN 4 | Ground |
| PIN 5 | Tube I Control Input (0-4 V = 0-200 µA) |
| PIN 6 | Tube HV Control Input (0-4 V = 0-50 kV) |
| PIN 7 | Filament Ready (0-5 V, Low = Not Ready, High = Ready) |
| PIN 8 | Tube Enable Input (0-5 V, Low = Off, High = Enable) |
| PIN 9 | Tube HV Monitor Output (0-4 V = 0-50 kV) |
| PIN 10 | Tube I Monitor Output (0-4 V = 0-200 µA) |
Figure 1. Mechanical Dimensions.
Figure 2. Mini-X-OEM 4W Isopower curve.
Figure 3. Mini-X-OEM Angular Response, 120° cone.
Figure 4. Mini-X-OEM 120° cone.
NOTE: When using the 2 mm collimator, the X-ray cone is 5°.
The Mini-X-OEM is only one component of an X-ray instrument. It is the responsibility of the OEM to provide a fail safe metal enclosure to prevent escaping radiation while their customers use this product. The OEM final instrument (turn-key system) must comply with local government regulations to protect personnel from exposure to radiation. Amptek Inc. bears no responsibility for the incorrect use of this product.
The Mini-X-OEM is manufactured and warranted (one year or 2000 hours, whichever comes first) by Newton Scientific Inc.
Revised January 15, 2013