Abstract: Systems and methods of remanufacturing an imaging cartridge include providing the imaging cartridge adapted to receive a signal from an imaging device and apply the signal to a component of the imaging cartridge, and attaching a signal modification element to the imaging cartridge to form a modified imaging cartridge, the signal modification element adapted to receive the signal from the imaging device, modify the signal to form a modified signal, and apply the modified signal to the component of the modified imaging cartridge.

Abstract: An air flow compensator for use with flow meters which includes a main slide element, a secondary slide element and first and second spring elements. The main slide element includes a magnetic insert in one end thereof and is movable toward a proximity sensor that detects the proximity of the magnetic insert. The first spring element biases both the main slide element and the secondary slide element away from the proximity sensor and the second spring element biases only the secondary slide element away from the proximity sensor. The secondary slide element is both movable together with the first slide element and independently movable with respect to the main slide element.

Abstract: Precalibrated flow meters which include electronic modules that contain, in a storage memory thereof, a plurality of calibration factors that correspond to a plurality of different fluids. The calibration factors can be chosen during field operations using a touch pad on the face of the meters. The precalibrated flow meters monitor current and accumulative totals of fluid volumes. The precalibrated flow meters can be used in conjunction with air flow compensators which sense the flow of air through a fluid flow passage.

Abstract: In a token ring network wiring concentrator providing a low current/low voltage DC control signal to control insertion and removal of a work station, an improved concentrator lobe having a latching relay with a closed position in which communication is provided between a token ring network and a work station and an open position in which such communication is severed, an insertion relay driver circuit responsive to the DC control signal to close the latching relay when the DC control signal reaches a preselected minimum level, a removal relay driver circuit responsive to the DC control signal for opening the latching relay when the DC control signal falls below a preselected level and an insertion indicator LED for indicating when the work station is connected to the token ring network.