The NCT-2 is the cost effective answer to speed indication requirements. This system provides the analog signals necessary for process control, indication, or recording purposes. For increased speed of response at low pulse rates, the signal is updated with each pulse. To produce a signal acceptable to the probe, minimum velocity of the target block can be as low as 2 feet per minute. Calibration is easy, even in the field because the NCT-2 provides an extremely wide calibration range. This versatility allows monitoring of low to high speeds on all rotational applications from drag conveyors to screw conveyors to fans.