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

9.2.9 Inability to Zero

If the ZERO button is not illuminated when attempting to zero, that means the reading is outside of the software gain ranges allowed. In an analog instrument it would be the equivalent to the zero pot hitting the rotation stop. Check the following:

Select the PMT - TEST function. With zero gas going into the instrument, the value should be less than 150 mV, typically less than 50 mV. If you are getting a high reading, the probable reasons are:

1.The reading may be temporarily high if the PMT has been recently exposed to room light. If so, let the instrument run for several hours with zero gas to get the PMT accustomed to low light levels.

2.Leak that admits gas containing NO into the reaction cell.

3.Contaminated reaction cell. Remove and clean cell.

4.Wet (i.e., undried ambient air) air in the ozone generator. Check the PermaPure drier and associated plumbing for leaks and correct operation.

5.Zero gas that isn't really zero. Make sure you're not trying to zero the machine with ambient air or span gas.

6.Pre-reactor filter is corrupted with high readings. To clear the Pre-reactor filter, input zero gas and wait for 15 minutes for the filter to clear.

9.2.10 Non-Linear Response

Common causes are:

1.A leak in the pneumatic system, see Section 8.7.

2.High zero background - the PMT TEST function should be near 50 mV with zero gas. Readings above 100 mV indicate a light leak, contaminated reaction cell, bad zero gas, or wet air coming into the ozone generator. If the reading is not less than 150 mV, the instrument will not zero or span properly. Check Section 9.2.9.

3.Calibration device in error - re-check flowrates and concentrations, especially at low concentrations. If you are using a Mass Flow calibrator and the flow is < 10% of the full scale flow on either flowmeter you may need to purchase lower concentration standards.

4.The standard gasses may be mis-labeled as to type or concentration. Labeled concentrations may be outside the certified tolerance.

5.Contamination in sample delivery system:

A.Dirt in sample lines or reaction cell

B.Contaminated cal gas source (NO2 in NO cal gas is common)

C.Dilution air contains sample or span gas

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Teledyne 200AU instruction manual Inability to Zero, Non-Linear Response
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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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