ANALOG DEVICES模塊5B32-01產品參數
Model | 5B32-01 |
Input Range | 4 mA to 20 mA |
Output Range | 0 V to +5 V |
ANALOG DEVICES模塊5B32-01產品介紹
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 是一款單通道信號調理模塊，可放大、保護、過濾和隔離其模擬輸入。 該模塊通過讀取外部精密 20 Ω 電阻器（已提供）兩端的電壓并生成 0 至 +5 V 的輸出來測量 4-20 mA 或 0-20 mA 的過程電流輸入信號?？商峁╊~外的電流轉換電阻器 作為附件（參見附件部分的型號 AC1362）。
請注意，5B32 模塊電路可以在輸入螺釘端子處承受 240 V rms，從而保護計算機側電路免受現場過壓的影響。 此外，所有 5B32 系列模塊都是混合搭配和熱插拔的，因此可以在不關閉系統(tǒng)電源的情況下從同一背板中的任何插座插入或拔出。
5B32 系列模塊內部
輸入放大器提供低漂移和穩(wěn)定增益。在放大器輸入端，從輸入信號中減去穩(wěn)定的激光調整零電平輸入偏移，以設置 4-20 mA 范圍內的零電平值。為了方便用戶，零可以選擇出廠設置以滿足自定義需求。 這允許抑制比精確擴展刻度測量的總跨度大很多倍的零刻度輸入值。
具有 4 Hz 截止頻率 (-3dB) 的內部多極點低通濾波可增強 50/60 Hz 的常模（信號噪聲）和共模（信號返回噪聲）抑制，從而能夠準確測量高頻率下的小信號 電噪聲。
通過變壓器耦合進行信號隔離，使用專有調制技術實現線性、穩(wěn)定和可靠的性能。 現場側的差分輸入電路完全浮動，無需輸入接地。 信號變壓器計算機端的解調器恢復原始信號，然后對其進行濾波和緩沖以提供低噪聲、低阻抗的輸出信號。輸出端必須保持在電源公共端的 ±3 Vdc 范圍內。
ANALOG DEVICES模塊5B系列其他常用型號：
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模塊5B32-01產品參數
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