SPECIFICATIONS
Part No.: IS230SRTD2ASRTD2AG21
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Input filter Hardware filter, 4 ms
Size: 17.8 cm wide x 33.02 cm high
Temperature: -30 to + 65oC
Technology: Surface-mount
Product Type: Compact RTD Board
Availability: In Stock
Series: Mark VIe
Functional Description
IS230SRTD2ASRTD2AG21 is a Compact RTD Board developed by GE. It is a part of the Mark VIe control system. SRTD is a compact Resistance Temperature Detector terminal board, designed for DIN-rail or flat mounting.
Terminal Board Functionality
- The terminal board is designed to efficiently supply a 10 mA DC multiplexed excitation current to each RTD, ensuring accurate and reliable temperature measurements. This excitation current, although not continuous, provides the necessary energy for RTD operation.
- Additionally, the RTDs can be either grounded or ungrounded, offering flexibility in installation configurations to suit specific application requirements.
Long-distance Connectivity
- The terminal board facilitates RTD connections located up to 300 meters (984 feet) away from the turbine control cabinet, accommodating installations in diverse industrial environments. To maintain signal integrity over extended distances, the maximum two-way cable resistance is limited to 15 ohms, ensuring optimal performance and minimizing signal loss.
Noise Suppression
Equipped with on-board noise suppression mechanisms similar to those found in the TRTD, the terminal board effectively mitigates external interference, ensuring clean and accurate RTD measurements even in electrically noisy environments.
Signal Processing and A/D Conversion
- The RTD inputs and signal processing mechanisms are depicted in the accompanying figure, illustrating the seamless integration of the terminal board within the overall system architecture. The PRTD pack's A/D converter samples each signal and excitation current four times per second in normal mode scanning and 25 times per second in fast mode scanning. This sampling frequency is synchronized with the power system frequency, ensuring precise data acquisition and real-time monitoring capabilities.
Linearization and RTD Type Selection
- The processor within the PRTD pack performs linearization for the selection of 15 RTD types, ensuring accurate temperature measurements across a wide range of operating conditions. This comprehensive functionality enhances system flexibility and compatibility, catering to diverse industrial applications with varying temperature sensing requirements.
- In summary, the terminal board plays a crucial role in facilitating RTD measurements with precision and reliability. Its advanced features, including long-distance connectivity, noise suppression, and comprehensive signal processing capabilities, make it a vital component in industrial control systems, ensuring optimal performance and efficiency.
Calibration Process for RTD Inputs
- In ensuring accurate and reliable temperature measurements, the RTD inputs undergo an automated calibration process. This calibration procedure utilizes a filtered calibration source and null voltages to achieve precise calibration results.
Filtered Calibration Source
- A filtered calibration source is employed to provide a stable and consistent reference signal for the calibration process. This source ensures that the calibration signal is free from any fluctuations or noise, thereby enabling accurate calibration of the RTD inputs.
Null Voltages
- Null voltages are utilized as reference points during the calibration process. These voltages represent the absence of any measurable signal and serve as baseline values against which the calibration adjustments are made. By comparing the RTD input signals to these null voltages, any discrepancies can be identified and corrected to ensure accurate temperature measurements.
Automated Calibration
- The calibration process is fully automated, eliminating the need for manual intervention and reducing the potential for human error. Through sophisticated algorithms and control mechanisms, the RTD inputs are calibrated with precision and efficiency.
The WOC team is always available to help you with your Mark VIe requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IS230SRTD2ASRTD2AG21?
It is a Compact RTD Board developed by GE under the Mark VIe series.
Does the terminal board feature noise suppression mechanisms?
Yes, the terminal board is equipped with on-board noise suppression similar to that found in the TRTD, ensuring accurate measurements even in electrically noisy environments.
How often does the A/D converter in the PRTD pack sample each signal and excitation current?
In normal mode scanning, the A/D converter samples each signal and excitation current four times per second. In fast mode scanning, it samples 25 times per second, synchronized with the power system frequency.
How many RTD types can be selected for linearization?
The processor within the PRTD pack allows for the selection of 15 RTD types for linearization, ensuring accurate temperature measurements across various operating conditions.
