Theory of Operation | Teledyne M201E specification

M201E Ammonia Analyzer

Teledyne API Model M201E NH3 Analyzer Operator Manual

Figure 1-3. M201E and M501 NH3, with Zero and Span Valve Options Pneumatic Flow

1.1THEORY OF OPERATION

The Teledyne-API Model M201E analyzer measures ammonia by oxidizing it to nitric oxide by the following reaction:

4NH3 + 5O2 → 4NO + 6H2O

The resulting nitric oxide is then measured by the chemiluminescent reaction with ozone. Consult Section 10.1 in the M200E manual (provided with this instrument) for more details on the nitric oxide measurement.

The analyzer uses two converters to oxidize the different sample gases. A high temperature catalytic converter, the M501 NH3,, converts NH3 and NOx into NO creating the TNx channel. A second converter, housed inside the M201E analyzer and consisting of heated molybdenum, converts all of the NOx in the sample to NO producing the NOx channel. The nitric oxide channel is measured while bypassing both the M501 NH3, and molybdenum converter. A Nafion® drier operated in reflux mode, is installed prior to the molybdenum converter and the AutoZero valve. The drier removes ammonia and water from the switched stream. The ammonia would have otherwise been converted by the molybdenum

10	05206H DCN5910

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Teledyne M201E manual Theory of Operation

M201E specifications

The Teledyne M201E is a high-performance, compact oceanographic and environmental monitoring device designed for versatile underwater applications. Leveraging advanced technologies, the M201E presents a plethora of features appealing to researchers, engineers, and environmentalists seeking reliable data collection in challenging aquatic environments.

One of the standout characteristics of the M201E is its robust design, which allows it to operate in various underwater conditions, from shallow coastal regions to deep-sea environments. Built with durable materials, the device ensures long-term performance and resilience against corrosion, making it an ideal choice for long-term deployments.

The M201E is equipped with a range of sophisticated sensors, enabling it to collect comprehensive data on several environmental parameters. Key features include the ability to measure temperature, salinity, depth, and turbidity, among others. This multi-parameter capability allows for detailed assessments of underwater ecosystems and provides essential insights into vital oceanographic processes.

Another remarkable aspect of the M201E is its connectivity and data transmission technologies. It supports various communication protocols, enabling real-time data streaming to research teams, enhancing their ability to respond to changing conditions swiftly. The device can be integrated into larger networks of sensors, facilitating a more extensive monitoring system that collaborates and shares valuable data.

Moreover, the M201E is powered by advanced battery technologies that maximize operational longevity, allowing for extended missions without the need for frequent maintenance. Users can also benefit from intuitive user interfaces and software, streamlining the process of configuring the device, managing data, and analyzing results.

The M201E’s versatility is further demonstrated by its compatibility with various mounting options and its adaptability to different research or monitoring projects. Whether deployed by autonomous underwater vehicles (AUVs), buoys, or fixed platforms, the M201E meets diverse field requirements.

In conclusion, the Teledyne M201E stands out as a highly functional and reliable tool for underwater research. With its robust design, comprehensive sensing capabilities, advanced communications technologies, and ease of integration, it significantly contributes to our understanding of marine and freshwater environments. As the demand for precise and reliable environmental monitoring continues to grow, the M201E is poised to play a crucial role in the future of oceanographic research and environmental management.