The testo 640 measuring optically the number of turns, for example, fans or axes. The measurement area is displayed with a LED marking on the object to be measured. The Min / Max are posted directly by simply pressing a button. The illuminated display also provides a comfortable reading measurement data even in case of bad lighting conditions. The testo 460 is highly maneuverable, small and easy to use.
|Storage temperature||-40 ... +70 ° C|
|Operating Temperature||0 ... +50 ° C|
|Battery Type||2 batteries Type AAA|
|Size||119 x 46 x 25 mm|
|Probe Type Plan|
|Accuracy||± (0.02% rdg + 1 Digit)|
|Resolution||0.1 rpm (100 rpm ... 999.9) |
1 rpm (1000 ... 29,999 rpm)
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