描述
一、核心功能与定位
类型：双通道工业级模拟量输入模块，专为热电偶信号采集设计，适用于高温、高精度工业场景。
品牌：OPTO 22（美国工业自动化设备制造商），产品线覆盖工业控制、数据采集等领域。
核心功能：支持热电偶直采、冷端补偿、高精度信号转换及抗干扰设计，适用于温度、压力等连续量监测。
二、技术参数
信号输入
通道数：双通道独立采集，支持E型、J型、K型热电偶（-200℃至+1370℃）。
冷端补偿：内置CJC（冷端补偿）功能，精度±0.5℃。
分辨率：15位A/D转换，分辨率达±0.0078125%满量程误差。
隔离与抗干扰
隔离电压：通道间及通道与地间4000V DC光电隔离。
共模抑制比（CMRR）：120dB（50/60Hz），支持纳米晶磁芯隔离变压器。
环境适应性
工作温度：-10℃至55℃，防护等级IP20（模块本体），接线端子支持IP65。
供电：10-30V DC冗余输入，功耗<1.5W。
通信与安装
接口：DIN导轨安装，兼容SNAP I/O底板。
信号指示：每通道独立LED状态指示（绿色=正常，红色=故障）。
三、技术优势
高精度与稳定性
15位Σ-Δ型A/D转换器，分辨率达0.00390625℃（K型热电偶），长期稳定性优于±0.1%。
动态校准算法补偿环境温度变化，适用于半导体晶圆厂等精密场景。
强抗干扰能力
4000V光隔离设计，共模瞬变抗扰度（CMTI）达75kV/μs，满足IEC61000-4-4标准。
硬件50/60Hz陷波滤波+软件数字滤波，抑制工业现场电磁干扰。
灵活扩展性
可拆卸弹簧端子支持0.25-2.5mm²导线，适配多种工业接线需求。
支持RS-485总线连接PLC，兼容MODBUS等工业协议。
1.Core functions and positioning
Type:Dual-channel industrial-grade analog input module,specially designed for thermocouple signal acquisition,suitable for high-temperature and high-precision industrial scenarios.
Brand:OPTO 22(US industrial automation equipment manufacturer),its product line covers industrial control,data acquisition and other fields.
Core functions:Support direct thermocouple acquisition,cold junction compensation,high-precision signal conversion and anti-interference design,suitable for continuous monitoring of temperature and pressure.
2.Technical parameters
Signal input
Number of channels:Dual-channel independent acquisition,supporting E-type,J-type,and K-type thermocouples(-200℃to+1370℃).
Cold junction compensation:Built-in CJC(cold junction compensation)function,accuracy±0.5℃.
Resolution:15-bit A/D conversion,resolution up to±0.0078125%full-scale error.
Isolation and anti-interference
Isolation voltage:4000V DC photoelectric isolation between channels and channels and ground.
Common mode rejection ratio(CMRR):120dB(50/60Hz),supporting nanocrystalline magnetic core isolation transformer.
Environmental adaptability
Operating temperature:-10℃to 55℃,protection level IP20(module body),terminals support IP65.
Power supply:10-30V DC redundant input,power consumption<1.5W.
Communication and installation
Interface:DIN rail-mounted,compatible with SNAP I/O base plate.
Signal indication:Independent LED status indication for each channel(green=normal,red=fault).
3.Technical advantages
High precision and stability
15-bitΣ-ΔA/D converter with a resolution of 0.00390625℃(K-type thermocouple),with long-term stability better than±0.1%.
Dynamic calibration algorithm compensates for ambient temperature changes and is suitable for precision scenarios such as semiconductor wafer fabs.
Strong anti-interference ability
4000V optical isolation design,common mode transient immunity(CMTI)up to 75kV/μs,meeting the IEC61000-4-4 standard.
Hardware 50/60Hz notch filtering+software digital filtering to suppress electromagnetic interference in industrial field.
Flexible scalability
The removable spring terminal supports 0.25-2.5mm²wires,adapting to a variety of industrial wiring needs.
Supports RS-485 bus connection PLC,compatible with industrial protocols such as MODBUS.
