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这国家仪器cFP-AI-100(零件号:777318-100)是8通道、12位电流和电压模拟输入组件。这镍cFP-AI-100带有板载诊断和悬挂装置，确保安装和维护简单明了。在信号的机载线性化将缩放值返回给用户的监测或控制应用后，该模块测量信号。
这模拟输入组件具有11个输入范围，连续提供250 Vrms CAT II通道到地隔离。它的11个输入范围是:0–1 V、0–5 V、0–15 V、0–30 V、1V、5V、15V、30V、0–20 mA、4–20mA和20mA。此外，它还允许I/O模块的热插拔。所有八个通道共用一个公共接地基准。公共接地参考与现场点系统中安装的其他模块保持隔离。这镍cFP-AI-100可以测量各种来源的电流:0至20 mA、4至20 mA和20 mA。在该模块中，电流流入Im端，流经一个100ω电阻，然后通过C或COM端离开电路。通过Im端子进入的电流读数为正，而从端子流出的电流读数为负。该模型中包含的超量程功能使其能够实现略高于标称值的测量。
这镍cFP-AI-100内置逐次逼近型12位ADC(模数转换器)。这模拟输入组件在所有通道上提供360 Hz更新速率。该模块有两个绿色LED指示灯，用于显示设备的电源和就绪状态。还有一个红色指示器作为超范围指示器。
这模拟输入组件重5.1盎司，尺寸为4.3 x 4.3 x 3.6英寸。在物理维度上。NI设备的推荐操作和储存温度范围分别为–40°C至70°C和–55°C至85°C，非冷凝相对湿度范围为10%至90%，随机和正弦操作振动分别为5 grms和5 g，所有频率范围均为10 Hz至500Hz。
The National Instruments cFP-AI-100 (Part Number: 777318-100) is an 8-Channel, 12-bit, Current and Voltage Analog Input Module. The NI cFP-AI-100 comes with onboard diagnostics and overhanging to ensure easy and straightforward installation and maintenance. This module measures signals after the onboard linearization of signal returns scaled values to the user’s monitoring or control applications.
This Analog Input Module features 11 input ranges and offers 250 Vrms CAT II channel-to-ground isolation on a continuous basis. Its 11 input ranges are: 0–1 V, 0–5 V, 0–15 V, 0–30 V, ±1 V, ±5 V, ±15 V, ±30 V, 0–20 mA, 4–20 mA, and ±20 mA. Moreover, it also allows hot swapping of the I/O modules. All eight channels share one common ground reference. The common ground reference remains isolated from other modules installed in your FieldPoint system. The NI cFP-AI-100 can measure current from various sources: 0 to 20 mA, 4 to 20 mA, and ±20 mA. In this module, current flows into the terminal Im, passes through a 100Ω resistor, and leaves the circuit through the C or COM terminal. The current entering through the Im terminal is read as positive, while current passing out of the terminal is read as negative. The over-ranging feature incorporated in this model allows it to achieve measurements slightly beyond the nominal values.
The NI cFP-AI-100 comes with successive approximation, 12-bit ADCs (Analog to digital converters). This Analog Input Module offers 360 Hz update rate on all channels. This module has two Green LED indicators to show the power and readiness status of the device. There is also one red indicator provided as the Out of Range indicator.
The Analog Input Module weighs 5.1 oz, and measures 4.3 x 4.3 x 3.6 in. in physical dimensions. The NI device has recommended operating and storage temperature ranges of –40 °C to 70 °C and –55 °C to 85 °C respectively, a non-condensing relative humidity range of 10 to 90%, random and sinusoidal operating vibrations of 5 grms and 5 g respectively–all at a frequency range of 10 Hz to 500 Hz.
