Oxymitter 4000

Instruction Manual

IB-106-340 Rev. 3.0 December 2003

3-3 RECOMMENDED CONFIGURATION

a.4-20 mA Signal Upon Critical Alarm

Rosemount recommends that the factory default be utilized. The 4-20 mA signal will go to the 3.5 mA level upon any critical alarm which will cause the O2 reading to be unusable. Customer can also select 21.6 mA as the failure setting if normal operations cause O2 readings to go below the zero % O2 (4 mA) level.

If the O2 measurement is being utilized as part of an automatic control loop, the loop should be placed into manual upon this failure event or other appropriate action should be taken.

b.Calibration

Rosemount recommends utilizing an autocalibration system, actuated by the “calibration recommended” diagnostic. New O2 cells may operate for more than a year, but older cells may require recali- bration every few weeks as they near the end of their life. This strategy ensures that the O2 reading is always accurate, and eliminates many unnecessary cali- brations based on calendar days or weeks since previous calibration. When utilizing the SPS 4000 or the IMPS 4000, consider wiring some or all associated alarm contacts.

1.CALIBRATION INITIATE. Contact from the control room to an SPS 4000 or IMPS 4000 (one per probe) provides the ability to manually initi- ate a calibration at any time from the control room. Note that calibrations

can also be initiated from a HART handheld communicator, from Asset Management Solutions software, or from the keypad on the Oxymitter 4000.

2.IN CALIBRATION. One contact per probe provides notification to the control room that the “calibration recommended” diagnostic has initi- ated an automatic calibration through the SPS 4000 or IMPS 4000. If the O2 signal is being utilized in an automatic control loop, this contact should be utilized to place the control loop into manual during calibration.

3.CALIBRATION FAILED. One con- tact per probe from an SPS 4000 or IMPS 4000 to the control room for notification that the calibration pro- cedure failed. Grouped with this alarm is an output from a pressure switch which indicates when the cali- bration gas bottles are empty.

4.4-20 mA SIGNAL DURING CALI- BRATION. The 4-20 mA signal can be configured to respond normally during any calibration, or can be con- figured to hold the last O2 value upon the initiation of calibration. Factory default is for the 4-20 mA signal to operate normally throughout calibra- tion. Holding the last O2 value may be useful if several probes are being av- eraged for the purpose of automatic control. Unless several probes are being averaged, always place any control loops using the O2 signal into manual prior to calibrating.

Rosemount Analytical Inc. A Division of Emerson Process Management

Configuration with Keypad 3-5

Page 79
Image 79
Emerson 4000 manual Recommended Configuration, MA Signal Upon Critical Alarm, Calibration

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.