Photo/Contact Tachometer DT-2858

Photo/Contact Tachometer DT-2858 Applications Used to measure rotative velocity, surface speed, frequency of motor. Applicable to the product departments of motor, fan, paper-product, chemical fiber, washing-machine, automobile, airplane, steamer etc. Features • Multifunctional, one instrument combines PHOTO TACH.(RPM) CONTACT TACH. (RPM , m / min, ft / min ). • Digital display with no guessing errors. • Wide measuring range and high resolution. • The last value / max. value / min. value will be automatically stored in memory. • The use of durable, long-lasting components, including a strong, light weight ABS-plastic housing assures elegant shape and ease of use. Details • Measuring Range Laser 2.5 ~ 99,999 r / min Contact 0.5 ~ 19,999 r / min Surface Speed 0.05 ~ 1999.9 m / min 0.2 ~ 6560 ft / min • Resolution Rotative Velocity 0.1 r / min (0.5 ~ 999.9 r / min), 1 r / min (Over 1000 r / min ) Surface Speed 0.01 m / min (0.05 ~ 99.9 m / min) 1 m / min (Over 100 m / min ) 0.1 ft / min (0.1 ~ 999.9 ft / min) 1 ft / min (Over 1000 ft / min ) • Accuracy ± (0.05% n + 1 d) • Sampling Time 1.0 s (Over 60 r / min ) • Test Range Select Automation • Memory Max / Min / Last Value • Time Base Quartz Crystal • Laser Tach Detecting Distance 50 ~ 150 mm / 2 ~ 6 inch (Typical), Max. 300 mm / 12 inch • Power Consumption 90 mA (Testing) • Operating Temperature 0 ~ 50 °C • Power Supply 4 x 1.5 V AA size (UM-3) battery • Dimensions 215 x 74 x 32 mm • Weight 200 g (Including Batteries)