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DI-5B43 Isolated DC Transducer Amplifier Input Modules

±1V to ±10V Input Range

Product Features

  • Interfaces to DC Displacement Transducers and Other Devices Requiring A Stable DC Supply
  • High Level Voltage Outputs
  • 1500Vrms Transformer Isolation
  • ANSI/IEEE C37.90.1-1989 Transient Protection
  • Input Protected to 240VAC Continuous
  • Fully Isolated Excitation Supply
  • 100dB CMR
  • 1kHz Signal Bandwidth
  • ±0.10% Accuracy
  • ±0.02% Linearity
  • ±20µV/°C Drift
  • CSA Certification and FM Approval Pending
  • CE Compliant

Products in the Series

Each DI-5B43 displacement transducer module provides a single channel of displacement transducer input which is filtered, isolated, scaled, and converted to a high level analog voltage output. This voltage output is logic-switch controlled, allowing these modules to share a common analog bus without the requirement of external multiplexers.

The DI-5B43 module is designed with a completely isolated computer side circuit that can be floated to ±50V from power common (pin 16). This complete isolation means that no connection is required between I/O common and power common for proper operation of the output switch.

The DI-5B43 can interface to DC displacement transducers and other devices which require a precision 10VDC supply and produce a high level output. The 1kHz bandwidth significantly reduces ripple and noise inherent in these devices.

Transducer excitation is provided from the module by a very stable 10V source. The excitation supply is fully isolated, allowing the amplifier inputs to operate over the full range of the excitation voltage. This feature offers significant flexibility in real world applications. Eight full scale input ranges are provided, from ±1V to ±8V, producing ±5V full scale output.

The input signal is processed through a pre-amplifier on the field side of the isolation barrier. This pre-amplifier has a gain-bandwidth product of 5MHz and is bandwidth limited to 1kHz. After amplification, the input signal is chopped by a proprietary chopper circuit. Isolation is provided by transformer coupling, again using a proprietary technique to suppress transmission of common mode spikes or surges. The module is powered from +5VDC, ±5%. Special input circuits on the DI-5B43 provide protection of the signal inputs and the isolated excitation supply up to 240VAC.