Abstract: Power monitoring devices, a converter therefor that may be installed in the field, and a kit comprising such a power monitoring device and a converter are disclosed herein. The power monitoring devices may include a housing enclosing circuitry having one or more processors to monitor parameters of a power system and having a plurality of conduits passing therethrough and an electrically conducting plate mounted in the housing in contact with each of the conduits to electrically ground the conduits. The power monitoring device may also include a class two input terminal block for powering the circuitry and a plurality of wires connected thereto that extend out of the housing through such that the device, before installation in the field, can be pre-configured.

Abstract: An apparatus, system, and method for measuring parameters, measuring or determining capacitance, producing a digital output that is dependent upon a capacitance, or converting a variable capacitance output, of a sensor capacitor for example, into a digital format. By activating and deactivating pins, a microprocessor may form various circuits, for instance, each containing a resistor and a different capacitor and, in some embodiments, without the use of intermediate switching components. The microprocessor may alternately measure the time to change the charge of each of the capacitors and then calculate the capacitance of one of the capacitors using the measured times and known capacitances of one or more reference capacitors. Certain embodiments use two reference capacitors and alternately charge and discharge the capacitors, and a simple formula may be used to calculate capacitance using times to reach a threshold voltage. A measured parameter may be humidity or pressure, for example.