Oxymitter 4000

Instruction Manual

IB-106-340 Rev. 3.0 December 2003

SECTION 8

TROUBLESHOOTING

8-1 OVERVIEW

While the Oxymitter 4000 electronics provides a significant number of diagnostic alarms to assist in troubleshooting potential problems, it’s good to place these alarms in perspective with re- spect to the instrument’s operating principles:

a.When the Zirconium Oxide sensing cell is heated to its setpoint [1357°F (736°C)], the cell will generate a voltage that represents the difference between the process O2% and the reference O2% inside the probe (20.95% O2 ambient air).

b.Test points are provided to read the raw milli- volt value generated by the thermocouple that controls both the cell temperature and the raw cell signal.

c.The cell temperature at test points 3 and 4 should always be stable at approximately 29 to 30 millivolts, which represents the 736°C setpoint temperature.

d.When flowing calibration gasses, the raw cell millivolt value at test points 1 and 2 should represent the levels on the chart in Figure

8-1.Note that the raw cell millivolt value in- creases logarithmically as the O2 concentra- tion decreases.

EMF (mV)

200

O2 Sensor Performance at 736OC

150

100

50

0 0

0.01

0.1

1

10

100

 

 

Concentration O2 (%)

 

37260043

O2

%

100

20

15

10

9

8

7

6

5

4

EMF(mV)

-34

1.0

7.25

16.1

18.4

21.1

23.8

27.2

31.2

36.0

O2

%

3

2

1

0.8

0.6

0.5

0.4

0.2

0.1

0.01

EMF(mV)

42.3

51.1

66.1

71.0

77.5

81.5

86.3

101.4

116.6

166.8

Figure 8-1. O2 Sensor mV Reading vs. % O2 at 736ºC (Reference Air, 20.9% O2)

Rosemount Analytical Inc. A Division of Emerson Process Management

Troubleshooting 8-1

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Emerson 4000 manual Section Troubleshooting, 100, EMFmV, 16.1 18.4 21.1 23.8 27.2 31.2 36.0
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4000 specifications

The Emerson 4000 is a state-of-the-art automation platform designed to enhance industrial processes and improve operational efficiency. This advanced system is recognized for its unparalleled reliability and flexibility, making it suitable for various industries such as oil and gas, chemicals, pharmaceuticals, and power generation.

One of the standout features of the Emerson 4000 is its robust architecture that comprises distributed control systems (DCS) and a comprehensive suite of software applications. This integration allows for real-time monitoring and control of complex processes, ensuring that operators have access to crucial data for informed decision-making. The system supports a wide range of field devices and protocols, facilitating seamless connectivity across various platforms.

The Emerson 4000 employs innovative technologies that elevate its performance. It incorporates advanced analytics and machine learning capabilities, which enable predictive maintenance and reduce downtime. By analyzing historical data and identifying patterns, the system can forecast potential failures, allowing operators to address issues before they escalate. This leads to increased uptime and significant cost savings.

Another key characteristic of the Emerson 4000 is its user-friendly interface. The intuitive design ensures that operators can navigate the system with ease, reducing training time and enhancing productivity. The customizable dashboards provide real-time insights and facilitate quick access to critical information, allowing teams to respond to changes in the process swiftly.

Security is also a cornerstone of the Emerson 4000 platform. The system includes multiple layers of cybersecurity measures to safeguard sensitive data and maintain the integrity of operations. This is crucial in today’s environment, where cyber threats are a significant concern for industrial facilities.

In addition, the Emerson 4000 excels in scalability. It can be easily expanded to accommodate the growing needs of a business without compromising performance. Whether an organization is looking to integrate additional processes or expand its operations geographically, the Emerson 4000 is designed to adapt and grow alongside the business.

Overall, the Emerson 4000 stands out as a powerful tool for industrial automation. Its combination of reliability, advanced technology, user-friendliness, security, and scalability makes it an ideal choice for organizations seeking to optimize their operations and drive efficiency in an increasingly competitive landscape.
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