NOx Sensor Module, 8.1 PMT, Reaction Cell Temp

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

9.3.8 NOx Sensor Module

Figure 9-9 and Figure 9-10 show the assembly of the NOx sensor module.

9.3.8.1 PMT

The PMT detects the light emitted by the reaction of NO with ozone. It has a gain of about 500,000 to 1,000,000. It is not possible to test the detector outside of the instrument in the field. The best way to determine if the PMT is working is by using Optic Test. OT operation is described in Section 9.1.3.3.

The basic method to diagnose a PMT fault is to eliminate the other components using ET, OT and specific tests for other sub-assemblies.

9.3.8.2 Reaction Cell Temp

The CPU controls the reaction cell temperature. It operates by reading a thermistor amplifier on the Status/Temp board. The CPU controls the temperature by toggling a bit on the V/F board. The V/F board TTL logic controls a solid state switch on the switch board in the PSM. The switched 115VAC comes out of the PSM to a connector near the underside of the reaction cell. A warning message may be present during initial warm-up or if the connector is not plugged in after cleaning the reaction cell.

9.3.8.3 Preamp Board

The NOx Preamp Board is a multi-function board providing circuitry to support the following functions.

1.Preamp, buffer amplifier, physical range control hardware for the PMT detector.

2.Precision voltage reference and voltage generation, and control for the PMT - HVPS inside the sensor module.

3.Constant current generator and adjustment for the Optic Test LED.

4.Voltage generation and adjustment for Electric Test.

5.Thermistor amplifier, control signal generation for the PMT cooler.

The setup and adjustment of items 1-4 above is covered in the Factory Calibration procedure in Section 9.1.6. Item 5 has no adjustable features.

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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.

Teledyne 200AU instruction manual NOx Sensor Module, 8.1 PMT, Reaction Cell Temp, Preamp Board

Models: 200AU