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

9.3.7 Flow/Pressure Sensor

The flow/pressure sensor board consists of 2 pressure sensors and a flow sensor. See Figure 9-8 for a diagram of this board. From these three sensors four values are computed and displayed on the front panel TEST functions. They are:

1.Ozone flow - measured directly - S3, R3

2.Reaction Cell Pressure - measured directly - S2, R2

3.Sample gas pressure - measured directly S1, R1

4.Sample Flow - computed from sample pressure and reaction cell pressure S1, S2

The above pressures and flows are filtered to produce the front panel readings. There is a small delay after adjustment for a steady reading when observing the TEST functions.

To adjust the OZONE flow:

1.Go to DIAG mode by pressing SETUP-MORE-DIAG, then select SIGNAL I/O, and press ENTR. Select OZONE_FLOW by using NEXT-PREV keys.

2.Adjust R3 so that OZONE_FLOW reads 2000 mV. This is the coarse adjustment.

3.Press EXIT to return to the SAMPLE mode. Select the OZONE FL - TEST function. Use a calibrated flow measuring device to make small adjustments in R3 to dial in correct flow.

To adjust the SAMPLE PRESSURE:

1.Go to DIAG mode by pressing SETUP-MORE-DIAG, then select SIGNAL I/O, and press ENTR. Select SAMPLE_PRESS by using NEXT-PREV keys.

2.Adjust R1 to read 4100 mV, which will give approximately the correct pressure.

3.Press EXIT to return to the SAMPLE mode. Select SAMP - TEST function. Use a calibrated absolute pressure meter to make small adjustments to R1 until the correct absolute pressure is displayed. 29.92 in-Hg-A is the target value at sea level. The rate of decrease is about 1"-Hg per 1000 ft of altitude.

To adjust the REACTION CELL PRESSURE:

1.Go to DIAG mode by pressing SETUP-MORE-DIAG, then select SIGNAL I/O, and press ENTR. Select RCELL_PRESS by using the NEXT-PREV keys.

2.Adjust R2 to read 1450 mV, which will give approximately the correct pressure.

3.Press EXIT to return to the SAMPLE mode. Select RCEL - TEST function. Use a calibrated absolute pressure meter to make small adjustments to R2 until the correct absolute pressure is displayed. The target value is about 5 in-Hg-A for the external Thomas pump in good condition at sea level.

9-55

Page 190 Page 192
Page 191
Image 191
Teledyne 200AU instruction manual Flow/Pressure Sensor
Page 190 Page 192

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.
Top Page Image Contents