NT-21A

Tachometer

Wide measuring range and high resolution
Range 2.5-99999rpm
Resolution 0.1rpm(2.5~999.9rpm)
1rpm(1000~99999rpm)
Basic precision ±(0.1%n+5d)rpm;(2.5~999.9rpm)
±(1%n+5d)rpm;(1000~99999rpm)
Measurement distance 50-500mm
Battery low power indication
LCD backlight display

Model	NT-21A
LCD display	5-digit large screen LCD with a word height of 18mm
Unit	rpm
Range	2.5-99999rpm
Resolution ratio	0.1rpm(2.5~999.9rpm) 1rpm(1000~99999rpm)
Basic precision	±(0.1%n+5d)rpm;(2.5~999.9rpm) ±(1%n+5d)rpm;(1000~99999rpm)
Laser power	CLASS 2 5mW
Sampling ratio	Once/second
Measurement distance	50-500mm
Time base	Quartz crystal
Automatic shutdown	The instrument will shut down after 60 seconds without any pressing.
Operation environment	0~50℃;32~122℉;10%~90%RH
Storage environment	-10~80℃;-14~176℉;10%~75%RH
Power supply	2x1.5V AAA battery
Dimension	55.729.9127mm
Weight	106g
Equipped with 3 bars of silver reflection tag (200mm*12mm)

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