Each DSCL21 loop powered isolator provides a single channel of analog signal protection by electrically isolating its input from output for any DC process signal in the range of 0-20mA (or 4-20mA). The DSCL21 operates passively, obtaining its power from the transmitted signal.

The input signal is chopped by a proprietary DC chopper circuit, isolation is provided by transformer coupling, a proprietary technique is used to suppress transmission of common mode spikes or surges, the output signal from the secondary of the transformer is reconstructed to the original input signal.
  • No Power Supply Required, Signal Powered from 0-20mA (or 4-20mA) Input
  • Simplified Wiring for Fast Installation
  • Narrow 12.5mm DIN Package for High-Density Mounting
  • No Recalibration or Maintenance Required
  • 500Vrms Transformer Isolation
  • Prevents Ground-Loop Problems
  • Prevents the Transfer of Interference Voltages and Currents
  • High Accuracy Over Full Span
  • CE Compliant
Loop Powered Isolator - DIN Mount

DSCL21 Devices


Part Number Input RangeOutput RangeMechanical FormatInternal Power SupplyIsolation VoltageIsolation TypeAccuracySupply Voltage
0 to 20 mA 0 to 20 mA DIN rail None 500 Vrms Transformer 1-way ±0.1% Span Typical (at 100 Ohm load) Loop Powered

Frequently Asked Questions


Can Dataforth provide calibration reports for modules I purchased?
Yes we can provide calibration reports for the modules that you purchased.

You can either
a) visit https://www.dataforth.com/TestDataReport.aspx to search for Test Report Datasheets by Serial Number or
b) you can send us a list of model numbers and their serial numbers to support@dataforth.com

How does the load resistance of a module affect the noise at the output?
Noise at the output of a module is independent of load resistance.
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