testo 470, the ideal combination of optical and mechanical rpm measurement. An optical measurement becomes a mechanical measurement by simply attaching an adapter for probe tip or surface speed disc.
Display
5-figure LCD display, 1-line
Storage temperature
-20 to +70 °C
Operating temperature
0 to +50 °C
Battery type
2 AA batteries
Battery life
40 h
Weight
190 g
Dimensions
175 x 60 x 28 mm
Probe - RPM (optical)
Meas. Range
+1 to +99999 rpm
Resolution
0.01 rpm (+1 to +99.99 rpm)
0.1 rpm (+100 to +999.9 rpm)
1 rpm (+1000 to +99999 rpm)
Probe - RPM (mechanical)
+0.1 to +19.999 rpm
Accuracy
±0.02% of mv
