461950-NIST Extech Tachometer

Special Price $229.45 Regular Price $254.99
The 461950-NIST is a NIST Traceable Panel Mount Tachometer from Extech.
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  • NIST Traceable
  • Measure rpm from 5 to 99,990rpm with microprocessor quartz crystal accuracy of 0.05%
  • Large LED display updates 1/sec (rpm<60)
  • Resolution: 0.1rpm (5 to 1000rpm), 1rpm (1000 to 999rpm), 10rpm (10,000rpm to 99,990rpm)
  • Unique design permits rpm measurements of a one hole gear or disk eliminating the need for special gears;
  • Optional proximity and photo sensors


  • rpm: 5 to 99,990rpm
  • Basic accuracy: ±0.05%
  • Resolution: 0.1rpm (5 to 1000rpm), 1rpm (1000 to 9999rpm), 10rpm (10,000rpm to 99,990rpm)
  • Power: 115V or 230V AC; 50/60Hz
  • Dimensions/Weight: Bezel 3.8x1.9x2.4" (96x48x60mm); Panel cutout 3.6x1.8" (92x45mm) Meter 3.6x3.5x1.7" (92x90x42mm)/ 14oz (397g)
  • Sampling Time: 1sec>60rpm, >1sec>10 to 60rpm
  • Dimensions/Weight: 4.9x2x1.3" (124x50x33mm)/ 4oz (114g)

The 461950 is a 1/8 DIN Panel Tachometer. Measure rotational motor speed, moving fans, pumps, gears, propeller devices. Choice of 2 sensor pickup types: Proximity sensor-0.1 in. (3 mm) target distance, range up to 36,000rpm (600Hz); Photoelectric sensor-0.4 in. (10 mm) target distance, range up to 6,000rpm (100Hz). 1/8 DIN size. Powered by 115/230VAC 50/60Hz.

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