Ametek 682T-HP, User Manual

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Chapter 5: Hardware Details, Page 52
M o d e l 6 8 2 T - H P U S E R M A N U A L A T E X Z o n e 2
Your instrument has a rhodium (Rh) target X-ray tube. The maximum voltage, also
known as kilovolts peak (kVp), is 30 kilovolts (kV). The maximum current is 1000
microAmps (uA). The maximum tube output is 4 watts. The maximum output may
limit the available current at higher voltages. For example, the maximum current at 30
kV is 133.3 uA. The relationship of voltage, current and tube output is:
Voltage (kV) x Current (uA) = Output (watts)
1000
Your instrument has been optimized for the detection of sulfur with a
voltage of 27kV and a current of 75uA (2.025W).
5.9 Fan
A 24V fan is installed in the enclosure to stir the air and improve the cooling
performance. Finger guards are installed according to the manufacturer’s specifications.
5.10 Sample Aperture Window
The sample aperture window—also called the safety window—is a sheet of 1/4-mil
Polypropylene film covering the sample aperture on both the XRT Head and detector. It
must be kept clean for accurate results. If it becomes dirty, clean it gently with cotton
swabs moistened with water or alcohol. If the window ever becomes punctured or is
hopelessly dirty, replace it according to the procedure in Section
10.1.2 Sample Aperture
Window Replacement .
5.11 Flow Cell
The flow cell is made of stainless steel. All wetted parts in the sample line are 316
stainless steel except for the window material. All components of the assembly are static
pressure tested to 2540 psig, per the requirements of EN 60079-2, Section 16.7.1.
The primary wetted part is an assembly consisting of a brazed piece of 200 mil thick
beryllium inside a 316 stainless steel flange. This assembly is welded into the flow cell
such that the design is considered “infallible”, consistent with EN 60079-2 Section
16.7.2.