ANALOG DEVICES模块5B32-01产品参数

ANALOG DEVICES模块5B32-01产品介绍

The 5B32 is a single-channel signal conditioning module that amplifies, protects, filters and isolates its analog input. The module measures a process-current input signal of 4-20 mA or 0-20 mA by reading the voltage across an external precision 20 Ω resistor (supplied) and generating an output of 0 to +5 V. Extra current conversion resistors are available as accessories (See Model AC1362 in the Accessories section).

Note that the 5B32 module circuitry can withstand 240 V rms at the input screw-terminals, thereby shielding computer-side circuitry from field-side overvoltage conditions. In addition, all 5B32 Series modules are mix-and-match and hot swappable, so can be inserted or removed from any socket in the same backplane without powering down the system.

Inside the 5B32 Series Module

A chopper-stabilized input amplifier provides low drift and stable gain. At the amplifier input, a stable, laser-trimmed zero-scale input offset is subtracted from the input signal to set the zero-scale value for the 4-20 mA range. For user convenience, the zero can be optionally factory-set to meet custom needs. This allows suppression of a zero-scale input value many times larger than the total span for precise expanded-scale measurements.

Internal multi-pole lowpass filtering with a four-Hz cutoff (-3dB) enhances normal-mode (noise on signal) and common-mode (noise on signal return) rejection at 50/60 Hz, enabling accurate measurement of small signals in high electrical noise.

Signal isolation by transformer coupling uses a proprietary modulation technique for linear, stable and reliable performance. The differential input circuit on the field side is fully floating, eliminating the need for input grounding. A demodulator on the computer side of the signal transformer recovers the original signal, which is then filtered and buffered to provide a low-noise, low-impedance output signal. The output common must be kept within ±3 Vdc of power common.

5B32 是一款单通道信号调理模块，可放大、保护、过滤和隔离其模拟输入。 该模块通过读取外部精密 20 Ω 电阻器（已提供）两端的电压并生成 0 至 +5 V 的输出来测量 4-20 mA 或 0-20 mA 的过程电流输入信号。可提供额外的电流转换电阻器 作为附件（参见附件部分的型号 AC1362）。

请注意，5B32 模块电路可以在输入螺钉端子处承受 240 V rms，从而保护计算机侧电路免受现场过压的影响。 此外，所有 5B32 系列模块都是混合搭配和热插拔的，因此可以在不关闭系统电源的情况下从同一背板中的任何插座插入或拔出。

5B32 系列模块内部

输入放大器提供低漂移和稳定增益。在放大器输入端，从输入信号中减去稳定的激光调整零电平输入偏移，以设置 4-20 mA 范围内的零电平值。为了方便用户，零可以选择出厂设置以满足自定义需求。 这允许抑制比精确扩展刻度测量的总跨度大很多倍的零刻度输入值。

具有 4 Hz 截止频率 (-3dB) 的内部多极点低通滤波可增强 50/60 Hz 的常模（信号噪声）和共模（信号返回噪声）抑制，从而能够准确测量高频率下的小信号 电噪声。

通过变压器耦合进行信号隔离，使用专有调制技术实现线性、稳定和可靠的性能。 现场侧的差分输入电路完全浮动，无需输入接地。 信号变压器计算机端的解调器恢复原始信号，然后对其进行滤波和缓冲以提供低噪声、低阻抗的输出信号。输出端必须保持在电源公共端的 ±3 Vdc 范围内。

ANALOG DEVICES模块5B系列其他常用型号：

ANALOG DEVICES 5B32-01

ANALOG DEVICES 5B32-02

ANALOG DEVICES 5B32-Custom

ANALOG DEVICES module NEW + ORIGINAL+ ONE YEAR WARRANTY

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ANALOG DEVICES模块5B32-01产品参数

• ANALOG DEVICES模块5B32-01