Access Senquip Application Notes — detailed documents explaining configuration, integration, and data setup for each supported system.
Powering an External 4‑20 mA Source
APN0006 | Revision 1.0 | April 18, 2024
This application note explains how a Senquip ORB can act as both a power supply and measurement device for an external 4‑20 mA sensor. It presents wiring examples using the ORB’s regulated 12 V output, details current‑limit characteristics, and shows how to confirm loop integrity via on‑screen diagnostics. Comparison is made between self‑powered and externally powered loops to guide sensor selection. The note includes recommendations for fuse protection, cable gauge, and energy budgeting in solar applications. It also covers software configuration, including scaling and alert thresholds, to ensure accurate interpretation of measured current. Following these steps, users can create simple, single‑supply monitoring systems without additional converters or power conditioning, reducing installation complexity and cost while maintaining measurement precision.
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