5 digit microprocessor based, battery powered hand-held tachometer/counter with data memory.
The 4HT600 has eight measuring ranges and three modes. Mode change is effected by pressing the MODE button. The instrument can be operated in optical or direct contact modes (using adaptor supplied). The power turns off automatically 30 seconds after the last operation to conserve the batteries. Three readings (the last, the maximum and the minimum) are recorded in memory and can be re-displayed at any time after the power has turned off by pressing the MEM button.
The display flashes to indicate an over-range reading or resets to zero for under-range in rate modes.
5 digit 10mm (0.39in) high contrast LCD, floating decimal
Rotation: 1 – 99,999RPM (contact and non-contact)
Speed: 0.1 – 1,999m/min, 0.3 – 6,500ft/min or 4.0 – 78,000in/min according to measuring wheel
Distance: 0.02 – 999.9 m, 0.01 – 999.9ft or 1.0 – 9,999in according to measuring wheel
±0.02% (±1 digit, 0.02m or 1.0in)
0.5 sec or one period
600mm (23.62in) Maximum
Last reading, maximum reading of last measurement and minimum reading of last measurement
2 x 1.5V Type AA batteries
30s after last operation
0°C to +50°C
-20°C to +70°C
260 x 207 x 68mm
4HT600 5 digit microprocessor based, battery powered hand-held tachometer/counter with data memory 4HT600
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