Special Features:

8.6 mm high display; key-protect switch to prevent front resetting; selectable time range 999999.9h or 3999d23.9h and 999h59m59s or 9999h59.9m; nema 4 ip66 front; pulse width 1 s; ambient temperature operating m10.0-p55.0 degrees c with no condensation or icing, storage m25.0-p65.0 degrees c with no condensation or icing; ambient humidity operating 25-85 pct

Properties:

An instrument used to count the frequency of recurrent electronic events and display the count on the panel of the instrument in numeric form. May also include facilities for a readout printed on tape. May include facilities for a very accurate output which can be used as a secondary transfer standard. It can be used to measure frequency, period, time interval, phase angle, frequency ratio, and for multiple period averaging. See also counter, electronic, digital and indicator, digital display.