Pre-Settable Current Sensing Apparatus, System, and/or Method
AssigneeSenva Inc.
InventorsKent Jeffrey Holce, Rodrick Eren Seely, William Forrest Hudson
Life of this patent
Estimating the term…
Abstract
The present invention relates to electromechanical device status monitoring and equipment protection applications for industrial automation, HVAC, and other implementations; and, more particularly, to the use of current sensing devices to detect loss-of-flow conditions. Presently described embodiments can comprise simplified, compact current sensing devices that can be economical to build, inventory, distribute, and purchase. Present embodiments can easily be calibrated and/or set by hand prior to installation, and they can be configured for automatically offering proof-of-flow detection based, at least in part, on the initially provided setting.
Claims5
A system for detecting loss of flow or other load loss, comprising:
- a current sensing circuit including:
- a current transformer for measuring current to a load;
- calibration circuitry configured to employ an indicated value for a load parameter selected from among a range of values for the load parameter;
- and
- an adjustable potentiometer for adjusting the calibration circuitry to employ the indicated value for the load parameter;
- and
- a calibration scale indicating the range of values and provisioned proximate to the adjustable potentiometer so as to facilitate adjustment of the calibration circuitry consistent with the indicated value.
A method comprising:
- identifying a value for use in monitoring proof of flow for a load;
- manually setting a current sensor to the value before energizing the current sensor;
- and
- employing the current sensor with the manually set value to sense current to the load.
Dependencies are inferred from the claim text.