The Fluke 931 ESP contact / non-contact handheld tachometer is able to measure the revolutions per minute (RPM) or surface speed and distance accurately.
Specifications
Rotation speed measurement
Range
Optical (non-contact) measurement: 1 to 99999 revolutions/minute Contact measurement: 1 to 19999 revolutions/minute (Fluke 931 only)
Precision
±0.02%RD+1
Sensing distance
(optical) 500 mm
Specifications
Battery type
(2) 1.5V LR6 (alkaline) AA battery
Battery life
About 40 hours
Operating temperature
0°C to 50°C
Storage temperature
-20°C to 70°C
Weight
250 g
Dimensions
175 × 60 × 28 mm
Warranty period
1 year
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