This combination instrument consists of an hour meter as well as an event counter. In the standard version, the event counter keeps track of the number of pulses while the hour meter measures the accumulated time of all the pulses in hours. Optional unit counts pulses and records elapsed time separately. Hour meter reads up to 99,999,99 hours and counter reads up to 9,999,999 pulses. Hour meter is driven by a synchronous motor in AC and a stepper motor on DC.
