Stroboscope DT2239B
 

Stroboscope DT2239B is used to measure the rotational speed of a rotating object and to inspect the defect on its surface without the need to adhere any mark to reflect the light, and thereby without the need to halt the object from its rotation.

This tachometer is used the microcomputer
(CPU) technique, photoelectrical technique
and LCD for one instrument combine PHOTO
TACH & MOTION & SURFACE MAR.
Large LCD display with backlight
Digital control adjust flash frequence
Low power consumption
Measure range: 60~19,999RPM
Coarse/Fine adjust amplitude:
<1,000RPM Coarse adjust: +/-10RPM
Fine adjust: +/-0.1RPM
=1,000RPM Coarse adjust:+/-100RPM
Fine adjust: +/-1RPM
Accuracy: +/-0.05%
Resolution: <1,000RPM: 0.1RPM
=1,000RPM: 1RPM
Battery: 4x1.5V AA battery