Instruction Manual

IM-106-880, Rev 1.0

January 2007

SB TC Open (Sample block heater thermocouple open)

OCX 8800

Probable Cause

Recommended Corrective Action

Sample block thermocouple or thermocouple circuit open

Check sample block thermocouple and circuit wires for breaks or loose connections per Figure 7-3and Figure 6-4.Repair breaks or loose connections or replace failed thermocouple. Perform Reset procedure in Section 3, Configuration and Startup to continue operation.

O2 TC Shorted (Oxygen sensor heater thermocouple shorted)

Probable Cause

Recommended Corrective Action

O2 thermocouple or thermocouple circuit shorted

Check O2 thermocouple and circuit wires for short circuit condition per Figure 7-3and

 

Figure 6-4.Repair shorted wiring or replace failed thermocouple. Perform Reset

 

procedure in Section 3, Configuration and Startup to continue operation.

 

Perform Reset procedure in Section 3, Configuration and Startup to continue operation.

Slow heatup during cold start

 

If alarm persists, refer to the O2 Htr Failure alarm procedure.

 

 

COe TC Shorted (Combustibles sensor heater thermocouple shorted)

Probable Cause

Recommended Corrective Action

Combustibles sensor thermocouple shorted

Check thermocouple resistance (lead to ground) of reference and active thermocouples

 

per Figure 7-3and Figure 6-5. If either thermocouple is open or shorted to ground,

 

replace combustibles sensor.

 

Perform Reset procedure in Section 3, Configuration and Startup to continue operation.

Slow heatup during cold start

 

If alarm persists, refer to the COe Htr Failure alarm procedure.

 

 

SB TC Shorted (Sample block heater thermocouple shorted)

Probable Cause

Recommended Corrective Action

Sample block thermocouple or thermocouple circuit shorted

Check sample block thermocouple and circuit wires for short circuit condition per Figure 7-3and Figure 6-4.Repair shorted wiring or replace failed thermocouple. Perform Reset procedure in Section 3, Configuration and Startup to continue operation.

Slow heatup during cold start

Perform Reset procedure in Section 3, Configuration and Startup to continue operation.

 

If alarm persists, refer to the SB Htr Failure alarm procedure.

 

 

O2 TC Reversed (Oxygen sensor heater thermocouple reversed)

Probable Cause

Recommended Corrective Action

O2 thermocouple wires reversed

Check O2 thermocouple wiring per Figure 7-3and Figure 6-4.Check the wiring at the

 

sensor and inside the electronics housing. Correct reversed-wires fault. Perform Reset

 

procedure in Section 3, Configuration and Startup to continue operation.

COe TC Reversed (Combustibles sensor block heater thermocouple reversed)

Probable Cause

Recommended Corrective Action

Combustibles thermocouple wires reversed

Check combustibles thermocouple wiring per Figure 7-3and Figure 6-5.Check the

 

wiring at the sensor and inside the electronics housing. Correct reversed-wires fault.

 

Perform Reset procedure in Section 3, Configuration and Startup to continue operation.

SB TC Reversed (Sample block heater thermocouple reversed)

Probable Cause

Recommended Corrective Action

Sample block thermocouple wires reversed

Check sample block thermocouple wiring per Figure 7-3and Figure 6-4.Check the

 

wiring at the sensor and inside the electronics housing. Correct reversed-wires fault.

 

Perform Reset procedure in Section 3, Configuration and Startup to continue operation.

 

 

 

Table continued on next page

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Emerson 8800 instruction manual SB TC Open Sample block heater thermocouple open
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8800 specifications

The Emerson 8800, a pivotal instrument in industrial automation, stands out for its robust features and cutting-edge technologies. Designed to enhance process efficiency and reliability, this device is integral to numerous industries, including oil and gas, chemical, and power generation.

One of the standout features of the Emerson 8800 is its advanced control capabilities. It incorporates a highly flexible control architecture that supports a wide variety of control schemes. This adaptability allows engineers to implement customized solutions tailored to specific process requirements. Additionally, the 8800 series includes integrated predictive diagnostics that continually monitor system performance, alerting operators to potential issues before they escalate into serious problems.

The technology powering the Emerson 8800 is equally impressive. Equipped with state-of-the-art microprocessors, it can handle complex calculations and data processing with remarkable speed and accuracy. The device supports multiple communication protocols, including Foundation Fieldbus, HART, and Modbus. This flexibility ensures seamless integration with existing systems, thereby enhancing data sharing and communication between devices.

Moreover, the Emerson 8800 features a user-friendly interface that simplifies operation and monitoring. The intuitive display allows operators to easily navigate through various settings and real-time data, promoting better decision-making and faster response times. This ergonomic design enhances usability in high-pressure environments, ultimately contributing to improved safety and operational efficiency.

Another key characteristic of the Emerson 8800 is its durability and reliability. Built to withstand the rigors of industrial environments, the device boasts a robust enclosure, ensuring protection against dust, moisture, and extreme temperatures. This reliability minimizes the risk of downtime, making it a cost-effective choice for industries where uptime is critical.

In summary, the Emerson 8800 emerges as a powerhouse in the realm of industrial automation. With its advanced control systems, diverse communication capabilities, user-friendly interface, and rugged design, it embodies efficiency and reliability. As industries continue to evolve, the Emerson 8800 stands ready to meet the challenges of modern automation, driving innovation and productivity in complex environments.
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