GE IS200VTCCH1B MKVI, Thermocouple Card
⁦GE IS200VTCCH1B MKVI, Thermocouple Card⁩ - الصورة ⁦2⁩

GE IS200VTCCH1B MKVI, Thermocouple Card

The VTCCH1B is crucial for temperature monitoring and protection in a turbine control system. Its main functions include:

  • Thermocouple Interface: The card is engineered to receive signals from multiple thermocouple sensors. Thermocouples are temperature sensors that measure temperature by generating a voltage based on the Seebeck effect. They are ideal for measuring high temperatures and are used in critical areas like the turbine exhaust, combustion chambers, and bearings.
  • Cold Junction Compensation (CJC): The board includes built-in cold junction compensation. This is a critical function for thermocouple measurements, as the voltage signal is relative to the temperature of the connection point (the “cold junction”). The VTC card measures its own internal temperature and adjusts the thermocouple’s reading to provide an accurate, absolute temperature value.
  • High-Resolution Measurement: The board uses a high-resolution Analog-to-Digital Converter (ADC) to accurately convert the thermocouple’s small voltage signal into a digital value. This precision is essential for tight control and for detecting potential issues early.
  • Dedicated Processor: The card has its own dedicated processor to handle signal conditioning and linearization, offloading this computational work from the main Mark VI controller.
  • VMEbus Interface: The card plugs directly into the VME backplane of a Mark VI rack, allowing for high-speed communication with the main controller.
  • TMR Support: The IS200VTCCH1B supports Triple Modular Redundancy (TMR) systems. In a TMR system, three separate VTC cards are installed, each taking a measurement from the same thermocouple. The system then uses a voting process to ensure accuracy and reliability, which is vital for safety-related temperature trips.
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الوصف

The GE IS200VTCCH1B is a VME Thermocouple Card for the Mark VI series of GE’s Speedtronic Gas Turbine Control Systems. This specialized board, also known as a VTC card, is designed to interface with thermocouple sensors to accurately measure high temperatures at various points on the turbine.

 

Key Features and Functionality

 

The VTCCH1B is crucial for temperature monitoring and protection in a turbine control system. Its main functions include:

  • Thermocouple Interface: The card is engineered to receive signals from multiple thermocouple sensors. Thermocouples are temperature sensors that measure temperature by generating a voltage based on the Seebeck effect. They are ideal for measuring high temperatures and are used in critical areas like the turbine exhaust, combustion chambers, and bearings.
  • Cold Junction Compensation (CJC): The board includes built-in cold junction compensation. This is a critical function for thermocouple measurements, as the voltage signal is relative to the temperature of the connection point (the “cold junction”). The VTC card measures its own internal temperature and adjusts the thermocouple’s reading to provide an accurate, absolute temperature value.
  • High-Resolution Measurement: The board uses a high-resolution Analog-to-Digital Converter (ADC) to accurately convert the thermocouple’s small voltage signal into a digital value. This precision is essential for tight control and for detecting potential issues early.
  • Dedicated Processor: The card has its own dedicated processor to handle signal conditioning and linearization, offloading this computational work from the main Mark VI controller.
  • VMEbus Interface: The card plugs directly into the VME backplane of a Mark VI rack, allowing for high-speed communication with the main controller.
  • TMR Support: The IS200VTCCH1B supports Triple Modular Redundancy (TMR) systems. In a TMR system, three separate VTC cards are installed, each taking a measurement from the same thermocouple. The system then uses a voting process to ensure accuracy and reliability, which is vital for safety-related temperature trips.

 

Technical Specifications

 

Feature Specification
Manufacturer General Electric (GE)
Series Mark VI
Product Type VME Thermocouple Card
Inputs Specific inputs for thermocouple sensors (e.g., Type K, J, E)
Processor Dedicated on-board processor
Interface VMEbus
Use Case High-temperature measurement for control and protection
Supported Configurations Simplex, TMR

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