CONSTANT RPM 78

Contact / Non-Contact Laser Tachometer Model RPM78 Features Contact and non-contact modes in one instrument Easy to use Detecting distance for non-contact tachometer up to 100cm Wide measurement range of RPM up to 99999 High resolution of 0.1 RPM Memory of record High accuracy and fast sampling time Constant warranty Measurement Range Non-Contact Tachometer : 5 ~ 99999RPM Contact Tachometer : 0.5 ~ 19999RPM Surface Speed : 0.05 ~ 1999.9m/ min. 0.2 ~ 6560ft/ min Resolution RPM : 0.1 RPM ( < 1000rpm) 1 RPM ( â ‰ ¥ 1000rpm) Surface speed : 0.01m/ min ( < 100m/ min.) 0.1m/ min ( â ‰ ¥ 100m/ min.) 0.1ft/ min ( < 1000ft/ min) 1ft/ min ( â ‰ ¥ 1000ft/ min) Display LCD, size 60x30mm 5 digits with display unit Accuracy  ± ( 0.05% + 1 digit) Detecting Distance 5 ~ 100cm typically Laser Less than 1mW, class 2 laser diode, red wave length is 645nm approximately Operating Temperature 0 ~ 50 ° C ( 32 ~ 122 ° F) Operating Humidity < 80% RH Memory Last/ maximum/ minimum value Battery 4 x 1.5V ( AA size) Size 215 x 75 x 38mm Standard Accessories Batteries, reflecting tape marks ( 600mm) , RPM adapter ( cone, funnel, surface speed test wheel) , instrcution manual, warranty card, certificate of product conformance