描述
GE DS3800NCJA是GE Mark IV系列中的一款冷端接口卡，主要用于GE Speedtronic燃气轮机控制系统中的温度测量系统。以下是其产品详情：
基本信息
品牌：GE通用电气。
型号：DS3800NCJA。
系列：Mark IV。
产品类型：冷端接口卡。
原产国：美国。
重量：约2磅，即约907克。
技术参数
通道数量：12通道。
工作温度：-30℃至55℃。
尺寸：高8.25厘米，宽4.18厘米。
外观设计
电路板左侧有一个小连接器端口，用于连接其他部件。
中央有一个集成电路，包含电阻、二极管和电容器等微小元件。
右侧有两个蓝色电位器，用户可通过调节电位器改变电阻值。
右侧有两个大型黄色电容器，左侧有两个银色电容器，此外还有多个红色和黑色电阻。
底部边缘有两个热敏电阻，旁边有几个测试点，用于检测电路板是否正常工作。
功能特点
冷端补偿：与热电偶配合使用，根据赛贝克效应，热电偶在冷热端存在温度差时会产生电压信号，DS3800NCJA负责测量冷端温度，并应用适当的补偿技术，确保温度测量的准确性。
信号处理：可能包含放大和滤波电路，对热电偶产生的低电平电压信号进行放大，同时过滤掉噪声和干扰，以提高温度测量的精度和质量。
The GE DS3800NCJA is a cold-end interface card in the GE Mark IV series,primarily used in temperature measurement systems within the GE Speedtronic gas turbine control system.Here are its product details:
Basic Information
Brand:GE(General Electric Company)
Model:DS3800NCJA
Series:Mark IV
Product Type:Cold-end interface card
Country of Origin:USA
Weight:Approximately 2 lbs(about 907 grams)
Technical Specifications
Number of Channels:12 channels
Operating Temperature:-30°C to 55°C
Dimensions:8.25 cm high,4.18 cm wide
Appearance Design
There is a small connector port on the left side of the circuit board for connecting other components.
In the center is an integrated circuit containing tiny components such as resistors,diodes,and capacitors.
On the right side are two blue potentiometers,allowing the user to change the resistance value.
There are two large yellow capacitors on the right side,two silver capacitors on the left side,and several red and black resistors.There are two thermistors on the bottom edge,with several test points nearby for checking if the circuit board is functioning correctly.
Features:
Cold Junction Compensation:Used in conjunction with thermocouples,based on the Seebeck effect,a thermocouple generates a voltage signal when there is a temperature difference between its hot and cold junctions.The DS3800NCJA measures the cold junction temperature and applies appropriate compensation techniques to ensure accurate temperature measurement.
Signal Processing:May include amplification and filtering circuitry to amplify the low-level voltage signal generated by the thermocouple while filtering out noise and interference to improve the accuracy and quality of temperature measurement.
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