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

4.2.6 Power Supply Module

The Power supply module supplies AC and DC power to the rest of the instrument. It consists of a 4 output linear DC power supply and a 15 volt switching supply. In addition, it contains the switching circuitry to drive the DC operated valves and several switched AC loads to operate the Rx cell heater, the Moly heater, and the ozone generator.

4.2.7 Pump, Valves, Pneumatic System

A standard M200AU comes with 2 valves. The NO/NOx valve switches sample from either the sample inlet port or from the moly converter into the reaction cell. Each NO/NOx cycle, the Pre- reactor valve re-routes sample gas into the Pre-reactor volume which allows time for the NO- Ozone reaction to complete. The pneumatic timing of the Pre-reactor is set so that any hydrocarbon interferences are measured and eliminated from the signal.

The M200AU is equipped with a high performance pump, capable of producing a reaction cell pressure of less than 4” Hg-A. See Figure 2-3 for hook-up information. A catalytic ozone scrubber protects the pump from the corrosive effects of ozone. See Section 4.2.8.

4.2.8 Ozone Generator

Because of the instability of ozone, it is necessary to generate this gas inside the analyzer. The ozone generation module consists of a high frequency switching AC supply and pulse transformer connected to a silent discharge tube. Air is supplied to the generator from a permeation type air drier. A complete description of its function and service requirements can be found in Section 9.3.6.

Although there are dangerous high voltages generated in the ozone generator, they are isolated from the user by sealing the system in a single potted assembly. The dry air supply for the ozone generator uses a membrane drier to supply air with a dew point of 0o C or less. The exhaust side of the membrane is connected to the vacuum manifold at the rear of the instrument.

Normal room air contains enough water vapor to damage the generator and components downstream. Because of this, the ozone generator may not turn on immediately at power up.

A heated catalytic ozone scrubber, located in the molybdenum converter assembly removes excess ozone from the instrument exhaust. The delay is built into the instrument to allow the dryer to start operating and purge the system with dry air. Table 4-2 details the conditions for turning on the ozone generator.

4-7

Page 37
Image 37
Teledyne 200AU instruction manual Power Supply Module, Pump, Valves, Pneumatic System, Ozone Generator

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.