Pulse Totalizer for Hygrometers, Flowmeters and Powermeters

Accumulates up to 9,999 counts
Noise filtering to minimize the possibility of miscounts
Alarm output provided (with selectable threshold)
Up to 32,000 measurements data can be collected with the optional 3911-20 for processing by PC
Special software bundled with the 3911-20 enables storing of the recording time, interval, start, end, method and comments in the instrument's memory
Non-volatile memory preserves collected data even when the battery is depleted