Extech Instruments 461895, Руководство пользователя

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461895-EN V2.1 8/13 3
Specifications
General Specifications
Circuit Custom one-chip LSI microprocessor circuit
Time base Quartz crystal
Display 5 digit LCD display
Measurements Photo Tachometer - 5 to 99,999 rpm
Contact Tachometer - 0.5 to 19,999 rpm
Surface Speed - 0.2 to 6,560 ft/min
Surface Speed - 0.05 to 1999.9 m/min
Memory Saves LAST, MAX, and MIN readings
Sampling Time Photo Tachometer - 1 sec. (over 60 rpm)
Contact Tachometer - 1 sec. (over 6 rpm)
Detecting Distance -
Photo Tachometer 2 to 6” (50 to 150 mm) depending on ambient light
Operating Temperature 32 °F to 122 °F (0 °C to 50 °C)
Power Supply Four 1.5 V AA batteries
Weight 0.66 lbs / 300g (including battery)
Size 8.5 x 2.6 x1.5” (215 x 65 x 38mm)
Accessories Reflective tape (23") , cone and funnel rpm adaptor, surface
speed wheel, and carrying case
Electrical Specifications
Range Resolution Accuracy
(% rdg)
Photo
Tachometer 5 to 99,999 rpm 0.1 rpm (0.5 to 999.9 rpm)
1 rpm (over 1000 rpm) ±(0.05% + 1d)
Contact
Tachometer 0.05 to 19,999 rpm 0.1 rpm (0.5 to 999.9 rpm)
1 rpm (over 1000 rpm)
Surface
Speed 0.2 to 6560 ft/min 0.1 ft/min (0.1 to 999.9 ft/min)
1 ft/min (over 1000 ft/min)
± (1% rdg + 1d)
Surface
Speed 0.05 to 1999.9 m/min 0.01 m/min (0.05 to 99.99 m/min)
0.1 m/min (over 100 m/min)