Such controls are often focused directly on supermarket racks. The application supports monitoring, performance, and charge management, as well as troubleshooting, via a central microprocessor-based control panel.
These capacitance-based probes interpret liquid level in a receiver, accumulator, or similar pressure vessel as a selectable DC voltage range of either 0-5 V or 1-6 V when powered by an 11- to 47-VDC regulated remote source.