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

8.4 Cleaning the Reaction Cell

The reaction cell should be cleaned whenever troubleshooting points to it as the cause of the trouble. A dirty cell will cause excessive noise, unstable zero or span, or low response.

To clean the reaction cell it is necessary to remove the reaction cell from the sensor housing. Use the following guide:

1.Turn off the instrument power and vacuum pump.

2.Loosen the hold down screws for pneumatic sensor assembly and move the assembly to the side.

3.Disconnect the exhaust fitting and inlet fittings. See Figure 8-3.

4.Loosen four screws holding the reaction cell to the sensor.

5.Disconnect heater/thermistor and lift the cell away.

6.The reaction cell will separate into two halves:

A.The manifold assembly

B.The reaction block with reaction sleeve and window

7.The reaction sleeve and window should be cleaned with methanol and a clean tissue and dried.

8.Normally it is not necessary to clean the sample and ozone flow orifices since they are protected by sintered SS filters. If tests shows that cleaning is necessary then do the following:

A.The manifold O-rings, springs, sintered SS filters, and orifices should be removed before cleaning. It is suggested that the orifice, filter and o-rings be replaced unless an ultrasonic cleaner and methanol or methylene chloride is available. Both orifice and sintered filter may be cleaned with an ultrasonic bath for 30 minutes in either solvent.

B.After cleaning with solvent, flush copiously with tap waster.

C.Now, rinse parts in either D1 or distilled water.

D.Dry parts prior to re-installation.

9.Do not remove the sample and ozone nozzles. They are Teflon threaded and require a special tool for re-assembly. If necessary, the manifold with nozzles attached can be cleaned in an ultrasonic bath.

10.Reassemble in proper order and re-attach onto sensor housing. Reconnect pneumatics and heater connections, then re-attach the pneumatic sensor assembly and the cleaning procedure is complete.

11.After cleaning, the analyzer span response may drop 10 - 12% in the first 1-2 days as the reaction cell window conditions.

8-7

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Teledyne 200AU instruction manual Cleaning the Reaction Cell
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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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