DSCA Series Isolated Signal Conditioners

Dataforth Instrument Class^® DSCA modules provide a single channel of isolated analog input or output. Input modules accept analog voltage or current signals from all types of field sensors and sources such as but not limited to process voltage or current, thermocouples, RTDs, or strain gages. The DSCA input modules filter, isolate, amplify, linearize, and convert these input signals into high-level analog outputs suitable for use in data acquisition, test and measurement, and control system applications. Output modules accept high-level analog voltage signals from a system, then buffer, isolate, filter, and amplify them before providing a current or voltage output to a field device.

Special input circuits provide protection against accidental connection of power-line voltages up to 240 V_AC and against transient events as defined by ANSI/IEEE C37.90.1. Protection circuits are also present on the signal output and power input terminals to guard against transient events and power reversal. Signal and power lines are secured to the module using screw terminals which are in pluggable terminal blocks for ease of system assembly and reconfiguration.

Module output is either voltage or current. For current output models, a dedicated loop supply is provided at terminal 3 (+OUT) with loop return located at terminal 4 (-OUT). The system-side load may be either floating or grounded.

The modules have excellent stability over time and do not require recalibration. However, zero and span settings are adjustable up to ±5% to accommodate situations where fine-tuning is desired. The adjustments are made using potentiometers located under the front panel label and are non-interactive for ease of use.