8B43

DC LVDT Input Modules

DESCRIPTION
8B modules are an optimal solution for monitoring real-world process signals and providing high-level signals to a data acquisition system. Each 8B43 module isolates, filters, and amplifies a voltage input signal and provides an analog voltage output.

The 8B43 can interface to transducers that will operate on a 10V excitation voltage and up to 30mA of excitation current.

Signal filtering is accomplished with a 5-pole filter optimized for time and frequency response which provides 100dB per decade of normal-mode rejection above 1kHz. One pole of this filter is on the field side of the isolation barrier for anti-aliasing, and the other four are on the system side.

A special input circuit on the 8B43 modules provides protection against accidental connection of power-line voltages up to 240VAC. Clamp circuits on the I/O and power terminals protect against harmful transients.

Isolation is provided by transformer coupling to suppress transmission of common mode spikes or surges. The module is powered from +5VDC, ±5%.

The modules are designed for installation in Class I, Division 2 hazardous locations and have a high level of immunity to environmental noise.
ORDERING INFORMATION

Part Number Input Range Output Range Mechanical Format Isolation Voltage Isolation Type Accuracy Supply Voltage Module Bandwidth Dimensions
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-1 to +1 V -5 to +5 V Modular plug-in-board 1500 Vrms Transformer 3-way ±0.05% Span +5VDC ±5% 1 kHz 1.11 x 1.65 x 0.40
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-2 to +2 V -5 to +5 V Modular plug-in-board 1500 Vrms Transformer 3-way ±0.05% Span +5VDC ±5% 1 kHz 1.11 x 1.65 x 0.40
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-3 to +3 v -5 to +5 V Modular plug-in-board 1500 Vrms Transformer 3-way ±0.05% Span +5VDC ±5% 1 kHz 1.11 x 1.65 x 0.40
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-4 to +4 V -5 to +5 V Modular plug-in-board 1500 Vrms Transformer 3-way ±0.05% Span +5VDC ±5% 1 kHz 1.11 x 1.65 x 0.40
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-5 to +5 V -5 to +5 V Modular plug-in-board 1500 Vrms Transformer 3-way ±0.05% Span +5VDC ±5% 1 kHz 1.11 x 1.65 x 0.40
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-1 to +1 V 0 to +5 V Modular plug-in-board 1500 Vrms Transformer 3-way ±0.05% Span +5VDC ±5% 1 kHz 1.11 x 1.65 x 0.40
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-2 to +2 V 0 to +5 V Modular plug-in-board 1500 Vrms Transformer 3-way ±0.05% Span +5VDC ±5% 1 kHz 1.11 x 1.65 x 0.40
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-3 to +3 v 0 to +5 V Modular plug-in-board 1500 Vrms Transformer 3-way ±0.05% Span +5VDC ±5% 1 kHz 1.11 x 1.65 x 0.40
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-4 to +4 V 0 to +5 V Modular plug-in-board 1500 Vrms Transformer 3-way ±0.05% Span +5VDC ±5% 1 kHz 1.11 x 1.65 x 0.40
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-5 to +5 V 0 to +5 V Modular plug-in-board 1500 Vrms Transformer 3-way ±0.05% Span +5VDC ±5% 1 kHz 1.11 x 1.65 x 0.40
BLOCK DIAGRAM
DC LVDT Input Modules