WOODWARD 8200-1151

الوصف

The WOODWARD 8200-1151 is a specialized and highly critical Thermocouple Input Module, part of Woodward’s RTCnet (Remote Terminal Control Network) series. It stands out due to its high accuracy and a crucial “Fail high” fault response, making it ideal for the most demanding temperature monitoring applications.

Product Overview

The WOODWARD 8200-1151 is an 8-channel Thermocouple (TC) Input Module designed to precisely measure temperatures using thermocouple sensors. Its primary application is in critical systems, notably gas turbine Exhaust Gas Temperature (EGT) monitoring, where both extreme accuracy and a reliable safety response are paramount.

• Product Type: Thermocouple Input Module
• Manufacturer: Woodward
• Series: RTCnet (Remote Terminal Control Network)
• Channels: 8 Thermocouple Input Channels
• Key Features: High Accuracy, Fail-High fault response
• Primary Application: Gas turbine EGT monitoring, and other critical high-temperature measurements.

Detailed Product Description

The WOODWARD 8200-1151 is engineered to deliver highly reliable and extremely accurate temperature sensing in harsh industrial environments. Thermocouples are favored in such settings for their wide temperature range, quick response, and ruggedness.

Here’s a closer look at its features and function:

• 8 Thermocouple Input Channels: The module provides eight independent inputs, allowing connection to multiple thermocouple sensors (e.g., Type J, K, T, E, N, R, S, B, etc.). It accurately measures the small voltages generated by thermocouples and converts them into precise temperature readings.
• High Accuracy: This is a defining characteristic of the 8200-1151. It offers superior measurement accuracy compared to standard thermocouple modules. This enhanced precision is crucial for applications like gas turbine EGT monitoring, where even minor temperature deviations can indicate significant performance issues or potential damage to the turbine. High accuracy ensures more reliable diagnostics, tighter control, and improved operational efficiency.
• “Fail High” Fault Response: This is a critical safety and diagnostic feature. If a thermocouple wire breaks (open circuit) or if there’s an internal failure within a channel, the module is designed to report a temperature value that is at or above its highest measurable range. This “fail high” indication serves as an immediate alert to the control system that an abnormal, potentially over-temperature, condition exists. This predictable failure mode is essential for implementing robust safety interlocks and protective shutdowns, prompting a cautious response rather than a falsely normal or low reading that could lead to equipment damage.
• RTCnet Communication: The module operates over Woodward’s RTCnet (Remote Terminal Control Network) protocol. RTCnet is a robust and deterministic CAN-based network that allows I/O modules to be distributed throughout a facility, closer to the sensors. This minimizes long, susceptible wiring runs, reduces electrical noise interference, and simplifies system architecture, ensuring high-speed, reliable communication of critical temperature data to the central control unit.
• Integrated Cold-Junction Compensation (CJC): Accurate thermocouple measurement requires precise cold-junction compensation. The 8200-1151 includes integrated CJC to ensure the highest possible accuracy across its operating range.
• Electrical Isolation: To protect the sensitive control system from electrical noise, surges, and ground loops that can originate in the field, the 8200-1151 provides electrical isolation for its input channels.
• Industrial-Grade Design: Built to Woodward’s high standards, this module is designed for the rigors of industrial environments, capable of withstanding vibrations, shock, and a wide range of temperatures.

The precise temperature data provided by the 8200-1151 is crucial for:

• Accurate Process Control: Maintaining optimal temperatures for efficiency and product quality.
• Enhanced Protective Functions: Reliably triggering alarms or initiating protective shutdowns when critical temperature limits are exceeded.
• Detailed Performance Monitoring: Tracking equipment health and identifying potential issues through highly accurate thermal analysis.

Technical Specifications (General)

Parameter	Value
Product Type	Thermocouple Input Module
Manufacturer	Woodward
Series	RTCnet (Remote Terminal Control Network)
Part Number	8200-1151
Input Channels	8 Thermocouple inputs
Sensor Types	Compatible with common thermocouple types (e.g., J, K, T, E, N, R, S, B, mV inputs)
Fault Response	Fail high (for open circuits / sensor breaks)
Accuracy	High Accuracy (specifically designed for critical measurements like EGT)
Cold-Junction Compensation (CJC)	Integrated
Communication	RTCnet protocol (CAN-based)
Isolation	Electrical isolation provided for inputs
Operating Temperature	Designed for industrial environments (check manual for exact range)
Power Supply	Powered by the RTCnet network (typically 24 VDC nominal)
Mounting	DIN rail mountable
Manuals/References	Woodward RTCnet Product Specifications, relevant control system manuals (e.g., 505XT, 25182 Industrial Turbine Products Catalog)

Typical Applications

The WOODWARD 8200-1151 is essential in critical industrial applications where precise and fail-safe temperature monitoring from thermocouples is paramount for control, protection, and safety:

• Gas and Steam Turbines: Its primary use is in monitoring critical temperatures such as Exhaust Gas Temperatures (EGT), combustion temperatures, and other turbine section temperatures. The high accuracy and “fail high” characteristic are particularly vital here to ensure safe and efficient operation.
• Engines: Monitoring cylinder exhaust temperatures, turbocharger temperatures, and other high-temperature points where precise readings are needed.
• Industrial Furnaces and Kilns: Providing highly accurate temperature feedback for control loops in high-temperature processes.
• Chemical and Petrochemical Plants: Monitoring critical process temperatures in reactors, heaters, and other equipment where high temperatures are common and safety is a major concern.