Lutron Electronics DT-2289, Operation Manual, Page: 9 / 21

Resolution 0.1 RPM < 1,000 RPM
1 RPM 1,000 RPM
≧
Time base Quartz crystal
Laser light * Less than 1 mW.
source * Class 2 laser diode. Red. Wave length
is 645 nm approximately.
2-4 Electrical Specifications of Contact
Tachometer ( Optional Probe, TA-35 )
Range
Contact Tachometer :
0.5 to 19,999 RPM
Surface Speed ( m/min. ) :
0.05 to 1,999.9 m/min.
Surface Speed ( ft/min. ) :
0.2 to 6,560 ft/min.
Accuracy ± ( 0.05% + 1 digit ).
Sampling Time 1 sec. ( 6 RPM ).
Resolution
0.1 RPM < 1,000 RPM
1 RPM 1,000 RPM
≧
0.01 m/min. < 100 m/min.
0.1 m/min.
100 m/min.
≧
0.1 ft/min. < 1000 ft/min.
1 ft/min. 1,000 ft/min.
≧
Accessories RPM adapter (CONE)................... 1 PC.
Included RPM adapter (FUNNEL)............... 1 PC.
Surface speed test wheel............. 1 PC.
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