Teledyne API Model 200AU NOX Analyzer Instruction Manual, 02293, Rev. F

4.2Operation Summary

4.2.1Sensor Module, Reaction Cell, Detector

The sensor module (Figure 9-9) is where light from the chemilumenescent reaction is generated and detected. It is the most complicated and critical sub-assembly in the entire analyzer. It consists of the following assemblies and functions:

1.The reaction cell and flow control module

2.Reaction cell heater/thermistor

3.PMT and high voltage power supply

4.PMT cooler/cold block/heatsink/fan

5.Preamp assembly:

A.Preamp range control hardware

B.HVPS control

C.PMT cooler temp control

D.Electric test electronics

E.Optic test electronics

4.2.2 Pneumatic Sensor Board

The sensor board consists of 2 pressure sensors and a flow sensor. One pressure sensor measures the pressure in the reaction cell. The reaction cell is maintained at about 0.1 atmospheric pressure. The second pressure sensor measures the pressure just upstream of the reaction cell, which is near ambient pressure. From these two pressures the sample flow rate can be computed and is displayed as sample flow in the TEST menu. Finally, a solid state flow meter measures the ozone flow using a resistive bridge. Likewise, it is displayed as a TEST function.

The M200AU displays all pressures in inches of mercury-absolute (in-Hg-A). Absolute pressure is the reading referenced to a vacuum or zero absolute pressure. This method was chosen so that ambiguities of pressure relative to ambient pressure can be avoided.

4-3

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Teledyne 200AU instruction manual Operation Summary, Sensor Module, Reaction Cell, Detector, Pneumatic Sensor Board
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200AU specifications

The Teledyne 200AU is a cutting-edge analytical instrument designed primarily for trace and ultra-trace analysis of elements in various liquid samples. Renowned for its reliability and precision, this inductively coupled plasma mass spectrometer (ICP-MS) is widely utilized in environmental monitoring, food safety, clinical diagnostics, and geochemical research.

One of the distinguishing features of the Teledyne 200AU is its exceptional sensitivity, allowing for the detection of elements at concentrations as low as parts per trillion (ppt). This sensitivity is crucial for applications where even minute traces of contaminants can have significant implications. The instrument also boasts a wide dynamic range, accommodating high-concentration samples without compromising accuracy.

The Teledyne 200AU incorporates advanced technologies that enhance its analytical capabilities. At the core of its design is a robust ICP source, which ensures optimal ionization efficiency. The instrument also features a high-resolution quadrupole mass analyzer, which enables precise separation and identification of ions based on their mass-to-charge ratio. This feature is essential for distinguishing between isotopes and analyzing complex mixtures.

Another notable characteristic of the Teledyne 200AU is its user-friendly interface, which simplifies the operation and data management processes. The software is intuitive, offering sophisticated data processing algorithms that streamline analysis. Users can easily access real-time data visualization, facilitating timely decision-making based on analytical results.

The instrument is built with durability in mind, featuring a compact design that allows for easy integration into various laboratory environments. The Teledyne 200AU is also equipped with state-of-the-art safety features, including enhanced cooling systems and automated shutdown protocols to protect both the instrument and the user.

Moreover, the Teledyne 200AU supports a variety of sample introduction methods, including nebulization and laser ablation, providing flexibility to accommodate different types of samples and experimental needs. Its multi-element capability further enhances its versatility, allowing simultaneous detection of multiple elements in a single analysis.

In summary, the Teledyne 200AU stands out as a premier instrument in the field of mass spectrometry. Its combination of high sensitivity, advanced technology, user-friendly features, and robust design makes it an invaluable tool for scientists and researchers seeking precise elemental analysis across various disciplines.
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