GE 燃机模块IS220PTCCH1A 轴位移、胀差监视器

GE IS220PTCCH1A并不是轴位移、胀差监视器，而是GE为Mark VIe系列开发的热电偶输入模块。

- **功能特点**

    - **输入类型**：该模块接受E、J、K、S和T热电偶以及mV输入，-8mV到+45mV是mV范围。

    - **输入通道数量**：在采用TBTCH1C的Simplex设置中，每个包可以处理多达12个热电偶输入，当使用两个包时，总共有24个输入。如果包只使用JRA和JTB连接器，利用TBTCH1B，每个IS220PTCCH1A包在Simplex配置下也可处理多达12个输入，共24个输入。在TBTCH1B端子板的TMR配置中，使用三个带三个冷接头的三包，尽管只有12个热电偶可用。

    - **电气接口**：通过电接口将一个或两个I/O以太网网络连接到热电偶输入终端板，具有双RJ45以太网接口，3pin电源输入，输出是一个DC-37引脚连接器，直接连接到端子板连接器。

- **技术参数**

    - **电压规格**：标称额定电压为24伏直流电，输入电压范围是21至32VDC，输入功率满载156瓦，具有+5VDC、+12VDC、-12VDC直流输出。

    - **精度与误差**：最大软件误差/一致性误差为0.25华氏度，交流共模抑制比为100db@50/60Hz，共模电压为±5伏。

    - **物理特性**：尺寸约为34×18×10cm，重量约2kg。

轴位移、胀差监视器通常是专门用于监测汽轮机动、静部分相对膨胀以及转轴轴向位移的装置，与IS220PTCCH1A模块的功能不同。

GE IS220PTCCH1A is not a shaft displacement or differential expansion monitor, but a thermocouple input module developed by GE for the Mark VIe series.

-* * Functional Features**

-* * Input Type * *: This module accepts E, J, K, S, and T thermocouples as well as mV input, with a mV range of -8mV to+45mV.

-Number of Input Channels: In the Simplex setup using TBTCH1C, each package can handle up to 12 thermocouple inputs, resulting in a total of 24 inputs when using two packages. If the package only uses JRA and JTB connectors, with TBTCH1B, each IS220PTCCH1A package can also handle up to 12 inputs in Simplex configuration, for a total of 24 inputs. In the TMR configuration of TBTCH1B terminal board, three packs with three cold connectors are used, although only 12 thermocouples are available.

-* * Electrical Interface * *: Connect one or two I/O Ethernet networks to the thermocouple input terminal board through an electrical interface, with dual RJ45 Ethernet interfaces, 3 pin power input, and an output of a DC-37 pin connector, directly connected to the terminal board connector.

-* * Technical parameters**

-Voltage Specification: The nominal rated voltage is 24V DC, with an input voltage range of 21 to 32VDC. The input power is 156 watts at full load, and it has DC outputs of+5VDC,+12VDC, and -12VDC.

-Accuracy and Error: The maximum software error/consistency error is 0.25 degrees Fahrenheit, and the AC common mode rejection ratio is 100db@50 /60Hz， The common mode voltage is ± 5 volts.

-* * Physical characteristics * *: The size is approximately 34 × 18 × 10cm, and the weight is approximately 2kg.

The axial displacement and differential expansion monitor is usually a device specifically designed to monitor the relative expansion of the dynamic and static parts of the steam turbine, as well as the axial displacement of the shaft, which is different from the functionality of the IS220PTCCH1A module.