AI03模拟输入模块多可处理8组隔离的RTD温度输入现场信号。每个通道支持2/3/4线RTD接线，并且可独立配置用于任何支持的RTD类型。FC 221（I/O设备定义）设置AI模块操作参数，每个输入通道使用FC 222（模拟输入通道）配置，以设置单个输入通道参数，如工程单位、高/低报警限值等。
每个通道的A/D分辨率是具有极性的16位。AI03模块有4个A/D转换器，每个转换器为2个输入通道提供服务。该模块将在450毫秒内更新8个输入通道。
AI03模块是自动校准的，因此不需要手动校准。
特点和优点
8个可独立配置的通道，支持RTD类型：
100Ω 白金美国实验室和行业标准RTD
100Ω 白金欧洲标准RTD
120Ω 镍电阻式温度检测器，中国53Ω 铜
A/D分辨率16位（带极性）
450毫秒内所有8个通道的A/D更新
精度为FSR=500时满量程的±0.1%Ω

The AI03 Analog Input module processes up to 8 group isolated, RTD temperature input field signals. Each channel supports 2/3/4 Wire RTD wiring an is independently configurable for any of the supported RTD types. FC 221 (I/O Device Definition) sets AI module operating parameters and each input channel is configured using FC 222 (Analog Input Channel) to set indivdual input channel parameters such as engineering units, High/Low alarm limits, etc.

A/D resolution of each channel is 16 bits with polarity. The AI03 module has 4 A/D converters, each serving 2 input channels. The module will update 8 input channels in 450 msecs.

The AI03 module is automatically calibrated, hence there is no need for manual calibration.

Features and benefits

• 8 independently configurable channels supporting RTD types:
• 100 Ω Platinum U.S. Lab & Industry Standard RTD
• 100 Ω Platinum European Standard RTD
• 120 Ω Nickel RTD, Chinese 53 Ω Copper
• A/D resolution 16-Bit (with polarity)
• A/D update of all 8 Channels in 450 msecs
• Accuracy is ±0.1 % of Full Scale Range where FSR = 500 Ω